UNITED STATES DEPARTMENT OF THE INTERIOR 

GEOLOGICAL SURVEY

Harold L. Ickes, Secretary

W. E. Wrather, Director

Water-Supply Paper 950

QUALITY OF SURFACE WATERS

OF THE UNITED STATES

1942

BY

W. D. COLLINS AND S. K. LOVE

Prepared in cooperation with the States of

GEORGIA, NEW MEXICO, and TEXAS

and other agencies

UNITED STATES

GOVERNMENT PRINTING OFFICE 

WASHINGTON : 1944

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

Price 15 cent*

CONTENTS

Introduction _ ___ ._. ___ __..-____ _ _________________ ._ - J

Analytical methods. _______ _ _________ ___ ____ _ _________ 1

Cooperation and division of work _ ________________ __ ___ 2F

South Atlantic slope and eastern Gulf of Mexico basins _ __ %

Florida __ ___ _________ _ _________________ _ ____ ___ #

Georgia- _________________________________________________ 2

Lower Mississippi River Basin__________________________ 3

New Mexico. ______________________ _ ______________ 3

Texas. ____________________________ ___ ___ ___ _ __ __ _ 3

Western Gulf of Mexico basins. _____ _ __________ ___ _____ ___ 3

New Mexico ___ ____ _ __ ____ _ ___ _________ _ _. _ 3

Texas ___ _ _______________________________________________ 3

Colorado River Basin_______________ ___ ______ ____ _____ 4

Publications. ________________________ _ _______________________ 4

Tables of chemical analyses______________________________.______ _ 5

South Atlantic slope and eastern Gulf of Mexico basins _ _____ 5

St. Lucie Canal at lock 1, Lake Okeechobee, Fla __ __ &

Miami Canal at water plant', Hialeah, Fla______ __ __________ 6-

North New River Canal near Fort Lauderdale, Fla ____________ 6*

Caloosahatchee Canal at Moore Haven, Fla ____ _ $

Canals in Broward, Bade, and Palm Beach Counties, Fla ____ 7

Tidal canals in and near Miami, Fla-_-_______-__---_---_, _ _ 8-

Flint River at Bainbridge, Ga __ _ _ __ ______ _______ 15

Oostanaula River at Rome, Ga __ ____________________ ___ 16

Lower Mississippi River Basin__________________________ _ 17

Canadian River near Sanchez, N. Mex___________________-___ 17

Conchas River at Variadero, N. Mex __ ____>_________. ... 18

Reservoir behind Conchas Dam, N. Mex __ _ ________________ IS

Pease River near Crowell, Tex_______ __ ______ _ ____ _._ 21

Western Gulf of Mexico basins_______ ___ ___._________.__.._-_ 22

Brazos River near South Bend, Tex__ _ _____ ._________._ _ 22

Brazos River at Possum Kingdom Dam, near Graford, Tex_ 24

Rio Grande at San Acacia, N. Mex___ __ __ 7 _ ___ 2&

Pecos River near Guadalupe, N. Mex_____ __ _________ 27

Pecos River near Acme, N. Mex ___ _____ _ _____ _ 28-

Pecos River near Artesia, N. Mex. . __ ____________ _____ 30

Pecos River at Carlsbad, N. Mex ___ ____ _____ ___ _ 32

Pecos River near Malaga, N. Mex __ ___________ _ ___- 33

Pecos River at Red Bluff, N. Mex _____________ . _ .. 34

Pecos River near Orla, Tex____ _____ _______ ___ ___. ___ 36

Pecos River below Graridfalls, Tex ______ _____ _____ 37

Carlsbad project main canal at Avalon Dam, near Carlsbad,

N. Mex___. ____________________________________________ 3S

in
IV CONTENTS

Tables of chemical analyses Continued. Page

Colorado River Basin..____________________________._.___------ 39

Colorado River at Glenwpod Springs, Colo__________------- 39

Colorado River at Bright Angel Creek, near Grand Canyon, Ariz, 40

Colorado River below Boulder - Dam, Ariz.-Ne v___ _______---- 41

San Juan River at Shiprock, N. Mex_______________________ 42

San Juan River near Bluff, Utah._____ _____-___-_______---- 44

Animas River at Farmington, N. Mex_______________---- 45

 Gila River at Safford, Ariz__-___-________-___.____-__---- 46

Colorado and Gunnison Rivers in Colorado____-_--___-___---- 48

Colorado and Green Rivers in Utah________________________ 49

Lake Mead, Ariz.-Nev____________--__----_----_-__-------- 50

Suspended sediment________________________________.:______-___---- 54

Tables of suspended sediment loads and mechanical analyses.___.___---_ 55

Colorado River Basin._______________________________________ 55

Colorado River near Cisco, Utah________________________---- 55

Colorado River at Bright Angel Creek, near Grand Canyon, Ariz. '58

Green River at Green River, Utah__________-______-__--_-- 61

San Juan River near Bluff, Utah...-..-____________ _ 63
QUALITY OF SURFACE WATERS OF THE 

UNITED STATES, 1942

By W. D. COLLINS and S. K. LOVE

INTRODUCTION

The water analyses given on the following pages indicate the suitability of the waters examined for industrial or agricultural use, and 

for domestic use so far as such use is affected by the dissolved or suspended mineral matter in the waters. The samples were collected 

between October 1, 1941, and September 30, 1942.

Most of the analyses are of 10-day composites of daily samples collected for a period of a year at a sampling point. The samples from 

streams were generally taken at points where gages are maintained for 

measurement of discharge. The discharge corresponding to an analysis of a composite sample is the mean of the daily discharges for the 

period covered by the daily samples used to make the composite. 

The discharges reported in the tables of single analyses are mean daily 

discharges for the days on which the samples were collected.

ANALYTICAL METHODS

For each month three composite samples were regularly made by 

mixing together equal quantities of daily samples collected from the 

,1st to the 10th, from the llth to the 20th, and during the remainder 

of the month. For some streams that are subject to sudden large 

changes in quality of water, composite samples were at times made 

more frequently on the basis of the salt content indicated by measurements of the conductivity of the daily samples.

The samples were analyzed according to the methods * regularly used 

by the Geological Survey, and the results are reported in parts per 

million. The constituents determined were not the same on all 

projects. In the analyses of some waters used for irrigation the quantity of dissolved solids is given in tons per acre-foot as well as in parts 

per million. The analyses give also results for a property, called 

"percent sodium," that has a bearing on the suitability of the waters

i Colllns, W. D., Notes on practical water analysis: U. S. Qeol. Survey Water-Supply Paper 596-H, pp* 

236-261, 1928.
2 -QUALITY OF SURFACE WATERS, 1942

for irrigation, '"Percent sodium" is the result obtained by dividing 

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

the total cations (usually sodium, potassium, calcium, and magnesium) and multiplying by 100. In analyses of waters carrying fairly 

large -quantities of soluble salts the quantity reported for dissolved 

solids is the sum of the quantities of the various constituents determined. In other analyses the quantity reported as dissolved solids 

is the residue on evaporation, after heating to 180° C. for 1 hour. The 

total hardness as CaCO3 is calculated from the calcium and magnesium. 

In some of the analyses the noncarbonate hardness is also reported. 

This is calculated from the total hardness and the bicarbonate.

COOPERATION AND DIVISION OF WORK

The analyses reported were made in connection with various Federal and cooperative projects, as described below. The descriptions 

of the work and the tables of analyses are arranged by drainage basins, 

according to Geological Survey practice in reporting records of stream 

flow.

SOUTH ATLANTIC SLOPE AND EASTERN QULP OP MEXICO BASINS

FLORIDA

The work on the quality of surface waters in Florida was confined 

to an area in the southeastern part of the State. It formed a part of 

a general study of the sources of water available for public and private 

supplies for Miami, Miami Beach, and the surrounding territory. The 

study was made under a cooperative agreement between the Geological Survey and Dade County and the cities of Miami, Miami 

Beach, and Coral Gables.

The quality of water investigations were made under the direction 

of S. K. Love. Some of the laboratory analyses were made at Washington and some at Miami, where space was provided through the 

cooperation of the Department of Health of that city. The analyses 

were made by S. K. Love, J. E. Mykytka, G. J. Petretic, and H. ASwenson. Records of discharge were furnished by G. E. Ferguson, 

district engineer, Ocala, Fla.

GEORGIA

The work on the quality of surface waters in Georgia was done as 

part of a general study of the water resources of Georgia made un<Ier 

a cooperative agreement between the Geological Survey and the 

Georgia Division of Mines, Mining, and Geology, Capt. Garland 

Peyton, director.

The sampling and the analytical work were under the direction of 

W. L. Lamar, of the Geological Survey. The analyses were made by 

W. L. Lamar,. E. W. Lohr, and C. G. Seegmiller. Records of discharge were furnished by M. T. Thomson, district engineer, Atlanta, 

Ga.
COOPERATION AND DIVISION OF WOEK 3

LOWER MISSISSIPPI RIVER BASIN 

NEW MEXICO

In cooperation with the Corps of Engineers, United States Army, 

records were obtained of the contributions of the Canadian Eiver and 

the Conchas Eiver to the storage behind Conchas Dam, hi New 

Mexico, and of the quality of the water in the reservoir. The quality 

of water work was under the direction of C. S. Howard. Some of the 

Analyses were made in Washington and some were made in Eoswell 

-and Albuquerque. The analyses were made by W. W,. Brannoek, 

JL D. Hem, C. S. Howard, E. W. Lohr, W. L. Minton, and W. F. 

White, Jr. Eecords of discharge were furnished by Berkeley Johnson, district engineer, Santa Fe, N. Mex.

TEXAS

Quality of water studies in the lower Mississippi Eiver Basin in 

Texas were confined to analyses of samples collected from the Pease 

Kiver near Crowell. The work was done by the Geological Survey 

in cooperation with the Texas State Board of Water Engineers, and 

was under the direction of W. W. Hastings. Analyses were made in 

the Geological Survey laboratory in Austin, Tex., by W. W. Hastings, 

and B. Irel'an. Eecords of discharge were furnished by C. E. Ellsworth, district engineer, Austin, Tex.

WESTERN GULF OF MEXICO BASINS 

NEW MEXICO

Work on the quality of surface waters hi New Mexico was done 

under a cooperative agreement between the Geological Survey and 

the New Mexico Interstate Stream Commission, Thomas M. McClure, secretary. The quality of water investigations were made 

under the supervision of C. S. Howard. The analyses were made in 

the Geological Survey laboratories in Eoswell and Albuquerque. 

W. F. White, Jr., was hi immediate charge of the program of sampling 

and of the analysis of samples in the Geological Survey laboratory hi 

Eoswell. The analyses were made by J. D. Hem, W. L. Minton, and 

W. F. White, Jr. Eecords of discharge were furnished by Berkeley 

Johnson, district engineer, Santa Fe, N. Mex.

TEXAS

Quality of water investigations in Texas were made hi cooperation 

with State and local agencies. Work on the Brazos Eiver was done 

under a cooperative agreement with the Texas State Board of Water 

Engineers, and work on the Pecos Eiver was done under a cooperative 

agreement with the Eed Bluff Water Power Control District.

The investigations were made under the direction of W. W. Hastings. Analyses were made hi the Geological Survey laboratory in
4 QUALITY OF SURFACE WATERS, 1942 i

Austin, Tex., by W. W. Hastings, B. Irelan, P. A. Witt, and J. Yett. 

Records of discharge were furnished by C. E. Ellsworth, district 

engineer, Austin, Tex.

COLORADO RIVER BASIN

Study of the quality of the water of the Colorado River and tributaries has been a continuing Federal project under the direction of 

C. S. Howard, with the cooperation of the following district engineers 

of the Geological Survey: J. H. Gardiner, Tucson, Ariz.; Robert 

Follansbee, Denver, Colo.; Berkeley Johnson, Santa Fe, N. Mex.; 

and A. B. Purton, Salt Lake City, Utah. Samples were collected 

from Lake Mead by the Bureau of Reclamation. Some of the 

analyses were made in Washington, D. C., and some in JRoswell and 

Albuquerque, N. Mex. They were made by W. W. Brannock, 

J. D. Hem, C. S. Howard, E. W. Lohr, L. W. Miller, W. L. Minton, 

N. A. Talvitie, and M. B. Thomas.

In addition to the tables of analyses of the dissolved mineral matter, 

records are given of the loads of suspended sediment at a few points 

in the Colorado River Basin.

PUBLICATIONS

Records of chemical analyses of series of samples collected during 

the year ended September 30, 1941, for most of the stations listed 

in this report are included in Water-Supply Paper 942. Analyses for 

several stations in the Colorado River Basin are given in WaterSupply Papers 596-B, 636-A, and 636-D. Analyses which were 

representative of a large number of rivers throughout the United 

States in 1906 to 1908 are given in Professional Paper 135. Records 

of suspended sediment in the Colorado River Basin are given in 

Water-Supply Paper 636-B.
TABLES OF CHEMICAL ANALY

SOUTH ATLANTIC SLOPE AND EASTERN GULF OF 

ST. LTJCIE CANAL AT LOCK 1, T.ATTR OKEECH

[Composites of daily samples collected at bridge on Florida Highway 194, several hundred feet west of lock 1 and 

Point. Analyses in parts per million]

Date of collection

Oct. 1-10, 1941 

Oct. 11-20 .

Oct. 22-31--. . ...

Nov.8-20_. ....

Dec 1-10

Dec. 11-20.. .....

Ton 1~in 1Q49

Jan. 11-20 -

Jan. 21-31.-. 

Feb 1-9

Feb. 10-20. -

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

Mean discharge 

(secondfeet)

2,695

1,449

3,383

3,884

fiHQ

824

464

732

573

311

1,723

600

997

Color

100

70

65

100

90

100

70

70

70

70

90

60

70

70

70

Specific 

conductance 

(KX10« 

at 25° C.)

42.2

38.2

33.9

27.0

30.8

35.3

36.5

37.4

36.6

33.2

36.5

34.5

34.2

33.8

32.8

Silica 

(SiOs)

*

Iron 

(Fe)

Calcium 

(Ca)

40

39

34

30

32

36

38

38

38

35

38

35

36

34

33

Magnesium 

(Mg)'

13

11

9.7

7.4

8.1

8.8

11

11

11

9.2

12

9.4

8.7

9.2

9.1

Sodium **£. 

(Na) s(lu,m

25

24

19

14

19

25

21

23

22

24

20

23

23

22

24

Bi

bo

(HC

MIAMI CANAL AT WATER PLANT, HIALEA

[Composites of daily samples collected at gaging station on Florida Highway 26, half a mile upstream from 

Oct. 1-10, 1941 .. ....

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

Nov. 1-10--. - 

Nov. 11-20. --- 

Dec. 21-31- ......

Jan. 11-20... -..- ..

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

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

Feb. 11-19. ......

Feb. 20-28... ...... .

1,010

922

837

797

869

848

781

698

643

602

602

526

477

440

494

120

120

110

110

110

95

95

95

90

90

90

90

90

90

90

41.8

43.1

44.0

44,8

44.8

44.6

45.0

46.1

46.6

46.5

48.9

49.3

49. i

48.9

49.8

5.8

5.3

5.6

6.6

7.2

8.3

6.0

6.1

6.0

5.6

5.9

5.7

5.5

5.7

5.2

' 0.02

.13

.08

.07

.13

.07

.08

.12

.13

.17

.08

.07

.09

.10

.16

76

78

79

80

81

81

82

84

85

85

87

88

88

88

90

6.3

7.0

6.6

6.3

6.4

7.2

6.9

7.3

7.0

7.3

6.7

6.9

6.9

7.0

7.2

11

11

12

12

12

12

12

12

11

12

13

12

13

12

12

1.3

1.3

1.2

1.2

1.2

2.0

1.9

1.4

1.5

1.8

1.3

1.4

1.4

1.4

1.2
NORTH NEW RIVER CANAL NEAR FORT I/ATJ

[Composites of daily samples collected at lock and dam, on Florida Highway 26, 6 miles southwes

Date of collection

Oct. 23-31. 1941 .....

Nov. 3-10-... .......

Nov. 11-20 .. _ ..

Nov. 21-26- .....

Dec. 1-8, 10 

Dec. 11-20. ......

Dec. 21-31 ......

Jan. 1-6, 1942. . .....

Jan. 7-20- - .........

Jan. 21-31--. __ ..

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

Feb. 11-19 

Feb. 20-28- ........

Mean discharge 

(secondfeet)

1,070

790

642

682

480

310

337

311

388

746

473

239

433

Color

180

170

160

160

130

120

110

95

100

110

110

90

90

Specific 

conductance 

(KX10« 

at 25° C.)

68. 1

66.3

69.6

73.4

77.2

76.3

69.3

75.7

80.3

69.4

68.6

70.9

51.5

Silica 

(SiOa)

12

12

12

14

15

15

13

15

19

13

12

12

8.0

Iron 

(Fe)

0.16

.22

,19

.16

.14

.08

.06

.12

.01

.04

.09

.02

.02

Calcium 

(Ca)

80

77

80

83

87

81

74

77

83

77

77

v 76

62

Magnesium 

(Mg)

21

18

20

21

23

23

20

24

23

19

18

19

13

Sodium 

(Na)

43

40

45

47

52

53

46

54

66

45

44

47

28

Potassium 

(K)

4.8

2.6

2.6

6.9

6.1

5.3

5.3

5.4

3.4

2.6

2.4

2.6

1.5

b

(

CALOOSAHATCHEE CANAL AT MOORE HA

[Composites of daily samples collected at lock 1 at Lake Okeechobee outlet. 

Oct. 6-20, 1941. .....

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

Nov. 1-10 .- __ -

Nov. 11-20 . 

Nov. 21-30 ...

Dec. 12-20- ___ ..

Dec. 21-25 ......

Jan. 7-10, 1942 

Jan. 11-19,,.. ......

Jan. 22-31. _ 

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

Feb. 11-20 

Feb. 21-27 ..........

3,975

3,976

190

110

sn

100

70

70

70

70

60

90

110

90

60

13.8

27.9

33.4

30.6

38.1

42 4

43.7

43.0

39.7

38.9

32.4

26.6

27.4

32.6

14

30

36

31

40

46

47

45

41

38

30

26

28

33

3.4

7.5

9 9

7 Q

9.9

12

12

12

13

11

7.6

6.1

7.1

8.2

6.9

13

16

19

23

22

25

26

20

27

25

18

18

23
SOUTH ATOANTIC SLOPE AND EASTERN GtlU1 OF MEXICO

CANALS IN BROWARD, DADE, AND PALM BEACH COUNTIES, FLA.

[Single samples collected at monthly intervals at gaging stations. Analyses in parts per million]

CYPRESS CREEK CANAL AT POMPANO

Date of collection

Oct. 23, 1941... 

Nov. 26 .....

Dec. 26 .....

Jan. 22, 1942 

Feb. 19. 

Apr. 8. .....

May? ... .

June 4 ____ ..

July 9.. .......

Sept. 3. .......

Color

90 

90

70

100 

90

60

90

130

110

95

120

Specific 

conductance (KX10» 

at25°C.)

46.9 

48.3

47.7

26.1

44.5

49.2

46.4

-44.2

43.9

47.1

40.0

Calcium 

(Ca)

96 

88

89

38 

80

93

80

74

79

86

67

Magnesium 

(Mg)

3.3

2.8

3.3

1.6 

3.1

3.5

4.1

3.7

3.1

41

6.8

Sodium and potassium 

(Na+K)

9.2 

14

11

14 

12

8.3

11

17

11

45

2.8

Bicarbonate 

(HCO,)

268 

245

268

102 

235

268

234

204

232

247

160

Sulfate 

(SO,)

20 

21

14

23 

15

16

16

33

12

10

39

. Chloride 

(Cl)

23

27

23

16 

21

26

22

26

22

20

21

Nitrate 

(NO,)

0.4 

.5

.3

.6 

.2

.2

.4

.0

.1

.1

.2

Dissolved 

solids

, 284 

274

268

144 

247

274

249

253

242

246

216

Total hardness as 

CaCOs

263 

231

236

101 

212

246

216

200

210

231

194

HILLSBORO CANAL NEAR DEERFIELD BEACH

Oct. 23, 1941... 

Nov. 26 . ....

Dec. 26... __ .

Jan. 22, 1942... 

Feb. 19 

July 9 

Aug. 7.. ___ . Sept. 3. .......

ISO 

130

110

100 

110

180

120

180

240

180

37.8 

49.9

66.4

17.8 

78.4

36.7

21.9.

22.0

99.4

69.0

32 

42

52

22 

62

32

22

22

72

66

10 

12

15

1.6 

14

9.2

4.4

5.6

23

17

34 

45

69

14 

83

26

17

14

98

33

143 

164

217

69 

239

122

R1

84

314

206

11 

15

22

6.4 

26

5.3

9 0

3.3

21

14

47 

72

100

20 

120

48

24

26

148

71

0.4 

1.6

.6

.1 

1.0

.4

.1

.1

.2

.3

206 

268

366

98 

482

181

117

111

- 517

292

121

164

191

62! 

212

11*

73

78

274

211

NORTH NEW RIVER CANAL NEAR FORT LAUDERDALE

Apr. 9, 1942-...

July 9.........

Aug. 6

Sept. 3.. __ .

160 

220

220

360

240

220

103

749

88.7

31.9

79.0

842

108 

88

on

46

90

93

36 

21

30

7.4

24

90

62 

41

66

5.0

37

36

387 

320

348

160

329

315

83 

30

76

3.7

44

70

105 

72

90

15

63

69

1.6 

1.5

.4

.1

.2

.1

686 

411

523

156

420

462

418 

306

370 145

323

361

TAHIAUI CANAL AT EROHE ATE. NEAR MIAMI

Oct. 23, 1941... 

Nov. 18. .......

Dec. 27 ........

Jan. 20, 1942 

Feb. 16 __ ...

Apr. 9 ...

May 20 

July 15. .......

Sept. 1. .......

60 

60

60

100 

70

60

40

70

120

90

100

24.6

27.8

31.5

33.5 

42.7

53.5

51.0

.37.4

27.0

28.0

27.5

40

44

52

54 

70

96

RR

64

42

46

4fi

3.7 

4.1

5.5

41 

5.7

48

7.0

4 ft

3.3

48

6.6

9.3 

9.3

6.5

13 

14

13

14

11

9.8

.8

132 

139

162

177 

233

301

286

206

150

143

134

41

5.8

1 7

1.9 

4 0

1.6

7.0

49

1

1

2.6

16 is

21

23 

23

26

26

20

11

11

15

0.2 

2.0

.3

.3 

.4

.5

.2

.2

.1

.1

.1

138 

152

169

184 

233

289

283

216

142

134

116 

127

152

152 

198

266

248

17»

118

132

142

TAMIAMI CANAL NEAR CORAL GABLES

Oct. 23, 1941 

Nov. 18 

Dec. 27 

Jan. 20, 1942 

Feb. 17 

May 20 ....

June 5 .........

July 15. _ .

Sept. 1 ........

66 

70

90

120 

110

80

70

70

120

90

100

37.8 

40.5

42.7

43.3 

45.5

47. 0

46.2

46.3

41.4

41.5

 41.5

70 

73

77

79 

82

86

80

86

74

72

72

6.0 

5.2

5.7

6.0 

5.7

5.0

5.9

5.2

3.6

6.1

7.4

8.0 

11

7.3

8.0

7.8

7.4

7.3

9.7

10

2.5

2.3

223 

236

9M

251 

266

269

250

268

232

226

228

5.1 

8.6

i 0

2.5 

1.6

4 0

13

16

9

1

3.5

2.3

17 

17is

19 

18

18

15

16

15

15

18

0.8 

2.0

.3

.1 

.1

.3

.2

.2

.2

.2

.1

226 

233

234

237 

246

264

245

264

226

Oil

214

195 

204

216

218 

228

235

224

236

1QQ

205

211
8 QUALITY OF SURFACE WATERS,, 1942

CANALS IN BROWARD, BADE AND PALM BEACH COUNTIES, FLA. Coa. 

WEST PAIM BEACH CANAL AT WEST PALM BEACH

Date of collection

Oct. 23, 1941. . .

'Nov. 26.. -

Dec. 26 

Jan. 22, 1942 

Teb. 19- 

July 9--.. 

Aug. 7 -

Sept. 3... 

Color

i

160 

130

130

110 

130

180

180

140

240

280

200

Specific 

conductance (KX105 

at26°C.)

24.1 

67.9

86.4

71.4 

70.6

77.1

-67.3

18.0

, 23.7

79.1

71.0

Calcium 

<Ca)

27 

51

57

57 

54

58

51

19

22

5857-

Magnesium 

(Mg)

5.8 

13

18

17 

17

18

15

3.6

4.6

20

18

Sodium 

and potassium 

(Na+K)

14

72

98

72 

73

80

69

15

1Q

76

60

Bicarbonate 

(HCOs)

102 

196

233

230 

221

230

200

61

94

245

207

Sulfate 

(SQ4)

7.0 

32

42

34 

36

49

30

14

5.8

34

31

Chloride 

(Cl)

22 

101

138

103 

103

108

101

22

22

110

101

Nitrate 

(N0>)

0.2 

2.0

1.2

.4 

.5

1.0

.4

.2

.1

.4

1.2

Dissolved 

solids

76 

400

469

392 

392

427

366

104

120

419

370

Total hardness as. 

CaC©8

91

181

216

212 

205

218

18&

63

74

226

216

TIDAL, CANALS IN AND NEAR MIAMI, FLA.

Single samples collected at semimonthly or monthly intervals at several bridges on each canal to give 

information about extent of salt-water contamination from Biscayne Bay. The values reported were 

determined on bottom samples]

SNAKE CREEK CANAL AT U. S. HI6HWAT 1

Date

1941 

Oct. 1 

Oct. 17 

Oct. 31 

Nov. 14. 

Nov. 28. 

Dec. 26. _

1948

Jan. 3 __ 

Specific 

conductance (KX1QS 

at 25° C.)

3,120 

3,260

3,890 

2,590

3,290 

415

4,270

Chloride 

(Cl, 

p. p. m.)

11,100 

11,500

14,900 

8,780

11,800 

1,130

15,300

Date

1948 

Jan. 16 - 

Feb 4 

Feb. 17 

Mar. 19. 

Apr. 28- 

Mays. .....

Specific 

conductance (KX10* 

at 25° C.)

3,570 

4 run

4,900 

3,900

4,740 

4,650

70.9 

73.9

Chloride 

(Cl, 

p. p. m.)

12,600 

13,700

17,700 

14,100

17,500 

17,000

74 

75

'Date

194® 

May 22-....

June 24 

July 9 

July 24 

Aug. 22..... 

Sept. 4 

Specific 

conductance (KX10« 

at25°C.)

1,720 

101

84.8 

91.0

333 

3,370

4,060 

3,340

Chloride 

(01, 

p. p. m.)

5,680 

160

122 

135

880 

12,000

15,100 

12,100

SNAKE CREEK CANAL AT MIAMI DRIVE

1941 

Oct. 1 ... 

Oct. 17 

Oct. 31__ 

Nov. 14. 

Nov. 28 

Dec. 26- 

194*

Jan. 3 ___

1 55.6 

58.6

57.9 

50.6

50.0 

58.0

57.8

31 

37

34

27

33 

37

34

1942 

Jan. 16. 

Feb. 4 ....

Feb. 17- 

Mar. 19.. 

Apr. 28 

59.2 

60.3

'187 

59.1

66.6 

177

55.1 

60.1

34 

35

402 

32

55 

385

30 

35

1948 

May 22. _ . 

June9_ - 

June 24 ...... 

July 9. 

July 24 

Aug. 22..... 

Sept. 4... _

62.6 

58.1

56.8 

59.1

55.6 

70.5

56.0 

54.0

4 

3

3! 

4

3 

3

2t

y

SNAKE CREEK CANAL AT MIAMI GARDENS DRIVE

1941 

Oct. 1 ... 

Oct. 17 

Oct. 31 

Nov. 14. 

Nov. 28. 

Dec. 26 -

1948

Jan. 3......

53.1 

57.8

56.6 

51.8

53.3 

55.5

58.2

27 

33

32

oo

34 

32

35

194% 

Jan. 16 ...... 

Feb. 4 

Feb. 17 

Mar. 4- 

Mar. 19...-

Apr. 28...... 

MayS--..-

58.8 

60.4

58.6 

58.7

59.2 

57.0

54.3 

59.2

33 

38

30

QO

34 

31

30 

33

194% 

May 22-....

June 24 _ 

July 9 ....

July 24_ 

Aug. 22..... 

Sept. 4... 

59.8 

54.3

50.7 

52.3

54.8 

56.8

54.2 

51.2

36

26

27 

28

27 

29

26 

22
SOUTH ATLANTIC SLOPE AHD EASTERN 6TW OF MEXICO

CANALS IN AND NEAR MIAMI, Ft, A . Continued

SNAKE CREEK CANAI AT FIORIDA HIGHWAY 14§

Bate

Ctet.1 

Oct. 17. 

Oct.. 31 

Nov. W 

Nov. '.SBDec. '26..:.-

 tOl9

Jan. 3 _ ...

Specific 'conductance (KX30« 

at 25° C.)

47.8

49 5

48.3

Afi R

AO O

50.1

50.5

Chloride 

(01, 

p. p. m.)

17

19

17

17

17

18

18

Date

1942 

Jan. 16 

Feb. 17 

Mar. 4. 

A rvT 9

Apr. 28 

May8. _ -

Specific 

conductance1

at25°C.)

51.4

52.2

51.4

CO A

51.8

51.7

48.2

53.1

Chloride 

(01, 

p. p. m.)

18

20

18

10

19

19

15

17

Date

1948 

May 22-....

June 24 

July 9 

July 24-.-..

Sept. 4 .

Specific 

conductance (KX10« 

at 25° C.)

51.0

49.6

40.4

43.8

47.3

51.1

48.1

46.7

Chloridr 

(Ctt, 

p. p. m.)'

- Iff

16

14

17

19

19

18

14

BISCAY!?! GANAI AT U. S. HIGHWAY 1

1941 

Oct. 1 -

<©ct. 17 

Oct. 31 .

Nov. 28...-

Dec 26

1948

4,160

4.180

3 1 on

3,820

4,680

4,160

3,770

15,400

15,100

11,300

13,600

17,800

15,100

13,?00

1S4S

Feb. 4 

Fob. 17 

Mar. 4.. -

Mar. 19-...-

Apr. 2 

Apr. 28 

4,940

5,140

4,810

4, 6.iO

4,720

68.3

76.3

18,000

18,200

17, 300

17,400

17, 500

68

93

1Q 4®

July 9 

July 24 

Ann1 99

Sept. 4- 

2,620

72.4

ftfi 9

63.6

676

3

/yrn

756

8,640

86-

6&

6L

1, 973-

in ofiftt

9 son,!

278

BISCAYNE CANAI AT NORTHEAST SIXTH AVE.

1941 

Oct. 1 

Oct. 17.....

Oct. 31-.---

Nov. 28 

Dec. 26- .

.' 1948

Jan. 3 ---

59.3 

3,190

3,020 

56.8

3,600 

2,860

4,^150

54 

11,200

10,500 

45

13,000 

9,860

14,800

194S 

Jan. 16.- 

Feb. 17 

Mar. 4. 

Mar. 19- 

Apr. 2. ..

Apr. 28 

4,710 

4,820

4,550 

3,890

4,220 

4,720

60.3 

59.4

16,900 

17,200

16,200 

14.-100

15,500 

17,600

48 

45

1948 

May 22.....

June 24 ......

July 9... ... -

July 24...... 

Aus. 6....--

Aug. 22 

Sept. 4. 

1,370 

52.0

56.9 

56.9

263 

2,090

59.2 

47.3

4,350* 

29-

41 

43:

&6 

. 6,96ft

51a*

BISCAYNE CANAI AT WEST DIXIE HIGHWAY

1941 

Oct. 1- 

Oct. 17.- 

Oct. 31 ..... 

Nov.- 14-... .

NOT. 28..-. 

Ded 26- 

194S

Jan. 3 

47.6

92.0

53.2 

49.3

49.4 

54.0

2,170

38 

142

32 

35

34 

- 31

7,260

1942 

Jan. 16 ___ 

Feb. 4 ....

Feb. 17 ... 

Mar. 4. .

Mar. 19.. 

Apr. 28 

3,430 

4,030

3,460 

1,050

3,160 

3,910

55.8 

56.6

12,100 

13,900

11,900 

3,230

11, 100 

14.0QO

35 

37

194$ 

May 22....-

June24... ... 

July 9- 

July 24... ....

Aug. 22...... 

Sept. 4 

56.9 

50.5

54.9 

54.6

52.9 

^56,8

49.0 

44.2

37- 

2#

37 

36

29 

Jtf

23 

21

BISCAYNE CANAI AT NORTHWEST SEVENTH AVE.

1941 

Oct. 1 

Oct. 17...-

Oct. 31 ..

Nov. 14 -

Nov. 28 

Dec. 26.L194$

Jan. 3 .

41.1 

49.0

47.8 

47.3

44.2 

48.3

49.5

17 

17

18 

18

17 

17

17

194$ 

Jan. 16. -- 

Feb. 4 .--.

Feb. 17. - 

Mar. 4... ...

Mar. 19. 

Apr. 2. _ ...

Apr. 28.. 

MayS---.-

49.4 

50.4

51.2 

49.1

49.7 

1,150

.47.8 

48.6

17 

19

20 

19

21 

3,620

16 

19

194? 

May 22...-

June 24 

July 9 

July 24 

Aug. 22. .. 

Sept. 4.- 

48.7

4fi 9

46.3 

46.7

47.2 

47.8

46.4 

42 2

IS 

16

»

19

1%

15 

13
10 QUALITY OF SURFACE WATERS, 1942

TIDAL CANAILS IN AND NEAR MIAMI, FL.A. Continued

BISCAYWE CANAL AT NORTHWEST TWENTY-SEVENTH ATE.

Date

%

1941 

Oct. 1 ....

Oct. 17 

Oct. 31. 

Nov. 14 

Nov. 28 

Dec, 26 

1948

Jan. 3 ......

Specific 

conductance (KX105 

at 26° C.)

47.8

60.6

46.9

47.8

46.6

60.6

50.8

Chloride 

(01, 

p. p. m.)

17

18

17

18

19

17

17

Date

1948 

Jan. 16 

Feb. 4 ..

Feb. 17 

Mar. 4

Mar. 19

Apr. 2.. _ II

Apr. 28 

May8 ......

Specific 

conductance (KX105 

at 25° C.)

61.3

61.1

48.8

50.7

49.5

49.7

48.9

49.9

Chloride 

(01, 

p. p. m.)

17

18

17

17

19

19

15

16

Dste

1948 ' 

Msy22. .

June 9 . ...

June 24 ......

July 9 

July 24- 

Aug. 6-.. 

Aug. Aiicr ^-.. 99 

Sept. 4. 

Specific 

conduct- ance" 

(KXlQf 

at 25° C.)

50.5

46.2

44 6

46.' 0

47.2

48.0 47! o

41.7

Chloride 

(Cl, 

p. p. m.)

18

13

15

14

20

20

17

13

BISCAYNE CANAL AT LE JBUNE RD.

mi

Oct. 1 ...

Oct. 17_ 

Oct. 31 

Nov. 14.... 

Nov. 28 

Dec. 26. ....

194$

40.6 

60.6 

48.8 

47.8 

46.1 

60.9

51.4

18 

17 

17 

IS 

18 

, 17

19

1948

Feb. 4.. 

Feb. 17 

Mar. 19. 

Apr. 2. 

Apr. 28- _ .

62.0 

60.4 

60.8 

60.2 

50.3 

49.6 

49.4 

50.0

16 

19 

17 

17 

16 

17 

14 

17

1948 

May 22. __

June 24 

July 9 

July 24 

Aug. « .....

Aue. 22... 

Sept. 4 

60.8 

43.7 

43.6 

46.2 

47.9 

48.2 

47.7 

40.8

17 

15 

13 

15 

20 

18 

16 

11

BISCAYNE CANAL AT RED RD.

1941 

Oct. 1 

Oct. 17 

Oct. 31. 

Nov. 14 

Nov. 28. 

Dec. 26 -

194*

Jan. 3. 

42.3 

47.8 

46.8 

42.6 

43.3 

49.3

48.4

17 

16 

16 

16 

16 

17

16

194SJan. 16 

Feb. 4... ....

Feb. 17 

Mar. 4-... 

Mar. 19. 

Apr. 2..,^ 

Apr. 28.. . 

May8....~

50.8 

60.3 

60.0 

49.5 

49.6 

60.4 

48.7 

49.2

16 

16 

16 

17 

18 

18 

16 

19

1948 

May 22.....

June 24- ....

July 9 ...

July 24 

Aug. 6 ...... 

Aug. 22---.. 

Sept. 4. __ .

49.9 

41.6 

37.2 

42.7 

44.6 

44.0 

46.2 

37.1

19 

14 

11 

15 

18 

26 

17 

12

UTTLE RIVER CANAL AT U. S. HIGHWAY 1

1941 

Oct. 1- - 

Oct. 17 

Oct. 31- 

Nov. 14 

Nov. 28 

Dec. 24 

1942

Jan. 3......

3,680 

4,230

3,320 

4,300

4,130 

4,640

4,630

13,300 

15.700

11,800 

15 400

15,100 

16,900

16,300

194$ 

Jan. 16 

Feb. 4 

Feb. 17 

Mar. 4. 

Mar. 19. _ .

Apr. 28 

4,460 

4,720

4,810 

4,570 ,

4,760 

4,850

148 

1,760

15,900 

16,800

17,300 

17,000

17,600 

18,100

308 

5,930

1948 

May 22. ....

June 24 ...... 

July 9 

July 24 

Aug. 22. 

Sept. 4 ...

3,660 

3,630

1,660 

2,820

3,620

3,580

3,780 

3,990

13,300 

12,400

5,830 

9,670

13,100 

13,000

13,800 

16,200

1941 

Oct.l 

Oct. 17- 

Oct. 31- 

Nov. 14 

Nov. 28 

Dec. 24 

t948

Jan, 3......

130 

3,220

2,820

1 4.QA

2,660 

3,530

3,690

260 

,11,600

9,860

4 7Rfl

8,930 

12,400

12,900

1948 

Jan. 16 

Feb. 4 ....

Feb. 17 !..

Mar.4......

Mar. 19 - 

Apr. 2 -

Apr. 28 

Mays.. 

3,740 

4,180

3,790 

2,670

3,760 

4,260

52.6 

103

13,300 

14,600

13,200

8.880

13,600 

15,600

29 

177

1948 

May 22. .... 

June 9 .......

June 24 _ ... 

July 9 ....

July 24 

Aug. 22 _ .- 

Sept. 4.. 

2,220 

252

61.9 

52.7

2,700 

2,680

2,960 

2,680

7,460 

630

28 

29

9,620 

9,220

10,300 

9,670
SOUTH ATLANTIC SLOPE AND EASTERN GULF OF MEXICO H

TIDAL CANALS IN AND NJELAB MIAMI, FLA. Continued 

LITTLE BITER CANAL AT NORTHWEST SEVENTH ATE.

Date

1941

Oct. 1 

Oct. 17 Opt. 31 _ -

Nov. 14 

Nov. 28 _ .

1949

Specific

conductance

(KX10«

at 25° C.)

60.4

328

398

54.5

125

2,530

1,750

Chloride

(Cl,

p. p. m.)

25

870

1,110

39

245

8,640

5,730

Date

1948

Jan. 16_ 

Feb. 4_ 

Feb. 17 

Mar.4.. 

Mar. 19 

Apr. 28.. ...

Specific

conductance

(KX10S

at 25° C.)

1,820

3,060

1,950

526

2,060

2,990

50.0

50.1

Chloride

(Cl,

p. p. m.)

5,680

10,300

6,370

1,480

7,060

10,400

22

24

Pate

1948

May 22. __

July 6. . ..

July 24......

Aug. 6.- 

Aug. 22. ....

Sept. 4. 

Specific

conductance

(KX10»

at 25° C.)

51.0

48.1

60.2

50.0

423

1,460

1,400

50.4

Chloride

(Cl,

p. p. m.)

26

20

24

25

1,200

4,650

4,600

26

LITTLE RIVER CANAL AT NORTHWEST NINETY-FIFTH ST.

1941 

Oct. 1 - ..

Oct. 17 

Oct. 31.....

Nov. 14....

Nov. 28 

v 1948

45.6

46.6

48.1

45.2

43.7

48.2

54.6

22

19

21

20

21

21

37

1948

Feb. 4.......

Feb. 17......

TV/Tor 10

Apr. 28. _ .

241

1,450

1,250

1,770

2,010

48.1

46.4

590

4,520

3,850

5,780

6,860

18

23

1949 

May 22.. ....

July 6... ... .

July 24 

Sept. 4 

49.4

.47.0

49.0

4.O 0

48.8

52.7

46.7

45.8

24

17

19

19

23

21

17

14

LITTLE RIVER CANAL AT NORTHWEST TWENTY-SEVENTH AVE.

1941 

Oct. 1 

Oct. 17 

Oct. 31 

Nov. 14 

Nov. 28 

Dec. 24...--

1948

Jan. 3.,. .

45.6

48.6

47.8 

46.6

43.6 

46.6

48.0

16 

16

16 

17

16 

16

17

1948 

Jan. 16 ... 

Feb. 4.. 

Feb. 17 

Mar.4.. 

Mar. 16...-

Apr. 28. _ . 

May8_ 

46.3 

50.6

46.4 

48.6

48.3 

86.4

45.1 

46.6

17 

20

16 

IB

16 111

13 

16

1948 

May 22. .... 

June 9 .......

June 24. _ . 

July 9 

July 24 

Sept. 4... 

47.9 

46.0

46.7 

47.6

48.5 

50.0

45.2

18 

14

15 

17

17 

21

14

LITTLE RIVER CANAL AT LE JEUNE RD.

1941

Oct. 1 -

Oct. 17-.-

Oct. 31 .....

Nov. 14 

Nov.28 .

Dec. 24. ....

1948

Jan. 3-. 

40.2

48.9

43.3

4fi Vft 4*

40.4

48.2

49.8

16

15

17

17

18

16

16

1948

Jan. 16. _ -

Feb. 4 .

Feb. 17 

Mar.4 

Mar. 19. .

Apr. 2 

Apr. 28. .....

May 8.. ....

49.9

52.0

50.0

50.4

50.0

49.1

46.4

47.6

16

19

18

16

18

18

12

15

1948

May 22 _ ..

June 9 

June 24. .

July 6 

July 24 

Aug. 6. .....

Aug. 22 .....

Sept. 4.. .

49.1

46.6

47.6

46.3

46.8

50.6

47.6

44.6

17

16

15

17

17

19

15

13

LITTLE RIVER CANAL AT RED RD.

1941 

Oct. 1 

Oct. 17. 

Oct. 31.. ... 

Nov. 14 

Nov. 28 

Dec. 24 __

1948

Jan. 3. .....

48.3

49.8

47.0

48.2

51.2 

50.1

51.0

16 

16

16 

1?

Iff

16

16

1948 

Jan. 16.. .... 

Feb. 4 ..

Feb. 17 

Mar.4 ..

Mar. 19.. ... 

Apr. 2... 

Apr. 28 

MayS.. 

54.2 

55.7

53.8 

52.8

54.0 

53.1

45.3 

47.5

16 

19

17 

17

10 

 17

13

h 14

194$ 

May 22 .....

June 24 .., 

July 6.. .....

July 24......

Aug. 22. .... 

Sept. 4......

61.4 

47.2

48.6 

64.6

51.6 

53.4

53.0 

48.8

18 

13

14 

17

15 

17

17 

14
12 QUALITY OF SURFACE WATERS, 1942

TIDAL CANALS IN AND NEAR MIAMI, FLA. Continued 

TAHIAHI CANAL AT NORTHWEST SOUTH RIVER DRIVE

Date

1941 

Oct. i ...

Oct. 17 

Nov. 14. ...

Nov. 28. 

194*

Specific 

conductance (KX10« 

at 25° C.)

43.7

39.8

42.0

42.9

40.2

45.0

45.8

Chloride 

(Cl, 

p. p. m.)

23

21

21

21

19

24

24

Date

194*

Feb. 4 

Feb. 17 

Mar.4 

Mar. 19 

Apr. 28 

Mays. -

Specific 

conductance (KX105 

at 25° C.)

64 6

253

200

64.8

213

237

55.5

57.8

Chloride 

(Cl, 

p. p. m.)

72

620

470

63

520

600

38

47

Date

194* 

May 22 

July 9... 

July 24. -

Aug. 22 ....

Specific 

conductance (KX105 

at 25° C.)

64.6

4S 4

48.6

'45.3

44.4

44 5

42.4

41.6

Chloride 

(01, 

p. p. m.)

65

23

22

23

23

OQ

21

21

TAHIAHI CANAL AT NORTHWEST THIRTY-SEVENTH AVE.

1941 

Oct. 1 . ..

Oct. 17 

Oct. 31 

Nov. 14 

Nov. 28 .

Dec. 24 

194*

38.8

36.6

40.2

41.0

39.1

40.5

44.0

19

19

19

19

18

18

20

194* 

Jan. 16 .. ..

Feb. 4 ...

Feb. 17 

Mar.4 

Mar. 19 

Apr. 2 ... -

Apr. 28 

51.8

88.3

49.2

47.3

52.1

111

51.1

53.6

33

129

28

22

38

207

25

34

1942 

May 22.-..

June9- ......

July 9 ..

July 24 .

Aug. 6... 

55.7

47.9

48 1

44 8

43.4

42.9

4:

2!

2]

2(

2: 1"

TAHIAHI CANAL AT LE JEUNE RD.

1941

Oct. 1 

Oct. 17 

Oct. 31... .. 

Nov. 14 

Nov. 28 

Dec. 24 

194*

Jan. 3 ......

42.0 

38.6

40.5 

41.5

38.4 

42.4

43.8

19 

19

19 

19

19 

19

19

194* 

Jan. 16 

Feb. 4 

Feb. 17 

Mar.4 

Mar. 19. 

Apr. 2 .......

Apr. 28 . 

Mays... 

46.2 

48.2

47.6 

46.6

50.7 

94.0

49.9 

51.0

21 

23

24 

19

32 

163

23 

29

1942 

May 22. .

June24- __ 

July 9 

July 24 .

Aug. 22 ......

Spet. 4 

52.1 

49.6

49.6 

46.3

44.5 

44.1

40.3 

41.5

3 2"

2,

2!

2 

2T

1! 

IS

TAHIAHI CANAL AT RED RD.

1941 

Oct. I.... 

Oct. 17 

Get. 31 .

Nov. 14 

Nov. 28. 

194* 

Jan. 3 ......

38.6 

37.8

39.2 

41.2

39.2 

42.6

. 43.2

16 

18

16

18

17 

17

19

194S 

Jan. 16 __ . 

Feb. 4 

Feb. 17 -

Mar. 19-- 

Apr. 28 

May 8-. __

44.4 

45.9

45.8 

46.0

45.9 AK 4

47.1 

46.6

18 

19

19

IS

20 

18

16

18

194* 

May 22.. ...

June 24... .. 

July 9 ..

July 24. 

Aug. 22... .. 

Sept. 4.. .

46.3 

45.3

46.0 

42.6

41.9 

41.0

39.3

38.7

It

r

r

r

«

1CK it

CORAL GABLES CANAL AT INGRAHAH HIGHWAY

1941

Oct. 1_ __ 

Oct. 17 

Oct:31 

Nov. 14..-

Nov. 28 

Dec. 24 

194*

Jan.3.. 

3,500 

4,080

4,060 

4,230

4,230 

4,220

4,690

12,600 

14,800

14, 700 

15,300

15,600 

15,200

16,900

194* 

Jan. 16. - 

Feb. 4 ...

Feb. 17 ... 

Mar.4 

Mar. 19-....

Apr. 28. 

4,670 

5,100

4,580 

4,700

4,830 

4,590

 3, 790 

3,500

17,000 

17,600

16,700 

17 600

18,000 

17, 00» H m

12, SOT

194* 

May 22.. ...

June 24 . 

July 9.. 

July 24..... .

Aug. 22.. ... 

Sept. 4. .

3,820 

3,690

3, 810, 

3,650

4,340 

3,930

4,250 

4,200

13.900 

12,600

13,5QO 

12,800

16,400 

14,600

15,990 

16,400
SOUTH ATLANTIC SLOPE AND EASTERN GULF OF MEXICO

TIDAL CANALS IN AND NEAR MIAMI, FLA. Continued

CORAI GABLES CANAL AT HARDEE RD.

Date

1941 

Oct. 1......

Oct. 17.....

Oct. 31-...

Nov. 14....

Nov. 28- 

1942

Jan. 3 ......

Specific 

conductance 

(KX10»

at25°C.)

3,570

3,420

3,880

4,230

4,320

4,010

4,460

01 joride 

(Cl, 

p. p. m.)

13,000

12, 100

14,000

15,300

16,000

14,400

15,800

Date

1942

Feb. 4.. ..

Feb. 17 

Mar. 19. 

Apr. 2 

Apr. 28 

Specific 

conductance (KX105 

at 25° C.)

4,v 340

4,960

4,550

4,440

3,160

4,360

3,660

2,830

Chloride 

(Cl, 

p. p. m.)

15,500

16, 800

16,600

16, 300

11, 100

15,900

13,300

10,000

Date

1948 

May'22. -.-

June 24. ... .

July 9 

July 24......

Aug. 6--...-.

Aug. 22-. 

Specific 

conductance (KX10« 

at 25° C.)

3,460

3,100

3,270

3,310

3,950

3,870

3,890

4,290

Chloride 

(Cl, 

p. p. m.)

12,700

10,600

11,600

11, 700

14,800

14,200

14,300

16,400

CORAL GABLES CANAL AT MILLER RD.

1941 

Oct. I......

Oct. 17.....

Oct. 31.....

Nov. 14-...

Nov. 28- 

Dec. 24 

884

1,057

908

740

2,890

1,080

2,780

3,300

2,800

2,250

10, 100

3,350

194*

Feb. 4 . ...

Feb. 17 

Mar. 19 

9 7fiO

.3,640

4,480

2,110

9 910

3,340

3,250

9,370

12,800

15, 400

7,160

7,410

11,900

11,400

194i

May 22- 

'July 9.......

366

702

772

96.1

194

1,030

1,021

2,12,

2,30!

16

44

3,151

CORAL GABLES CANAL AT U. S. HIGHWAY 1

1941 

Oct. 1 

Oct. 17 

Oct. 31 

Nov. 14....

Nov. 28 

Dec. 24- ...

1948

Jan. 3 ......

231

304

136

203

2,840 

153

1,080

610

820

310

500

9,910 

352

3,380

194g 

Jan. 16 

Feb. 4 ....

Feb. 17- .

Mar. 4_ 

Mar. 19- 

Apr. 28-.-.. 

May 8. 

2,540

2,930

1 060

679

1,490 

2,320

82.6 

165

8,640

9,620

3,320

2,000

4,820 

7,900

119 

365

1942 

May 22-....

July 9 ....

July 24.. .

Aug. 22-.. 

Sept. 4-_ 

172

71.3

164

110

369 

241

798 

92.2

39 ' »

34

20

1,05<

57

2,40 

16

CORAL GABLES CANAL AT GRANADA BLVD.

1941

Oct. 1 ... 

Oct. 17.-..

Oct. 31 . 

Nov. 14....

Nov. 28. 

Dec. 24 

1942

Jan. 3-. ...

35.5 

38.1

41.0 

40.9

40.8 

46.0

51.0

18 

17

21 

19

18 

20

45

1942 

Jan. 16 ......

Feb. 4 ... .

Feb. 17 ... 

Mar. 4.- __

Mar. 19.. ... 

Apr. 2 .

Apr. 28 ... 

Mays. .....

86.0 

59.0

299 

52.1

84.4 

269

53.3 

51.2

136 

54

790 

38

136 

710

; 36

33

1942 

May 22 __

June 24 ._...

July 9 ...

July 24- . 

 Aug. 6- 

Aug. 22. . 

Sept. 4-. 

61.3 

46.3

50.0 

54.3

49.1 4*4i/8; 

41.5

7 

1

2:

4

a

5

2 

1

CORAL GABLES CANAL AT BIRD RD.

1941 

Oct. 1 

Oct. 17 

Oct. 31. 

Nov. 14... .

Nov. 28.. . 

Dec. 24.....

194g

Jan. 3... ...

33.2 

37.2

41.2 

41.4

40.5 

45.7

46.0

16 

16

17 

16

17

17

18

' 194^ 

Jan. 16. ..... 

Feb. 4_ .

Feb. 17 ...

Mar. 19.. ... 

Apr. 2 .

Apr. 28 ...

May8^ -

47.6 

51.5

45.0 

47.9

46.8 

44.3

48.5 

47.4

18 

23

21 

17

25 

23

16 

19

1942 

May 22.....

June 24--. 

July 9... ....

July 24 ...

Aug. 22--. 

Sept. 4_. ....

46.8 

46.6

49.4 

48.1

46.1 

47.3

40.9 

41.5

20 

17

18 

18

19 

20

17 

14

591806 U
14 QUALITY OF SURFACE WATERS, 1942

TIDAL CANALS IN AND NEAR MIAMI, FLA.-Con.tIil.ued

CORAL GABLES CANAL AT RED RD.

Date

1941 Oct. I......

Oct. 17 

Oct. 31 

Nov. 14....

Nov. 28. ...

194S

Specific 

conductance 

(KX10«

at25°C.)

35.6

36.0

45.0

40.9

41.8

41.7

43.9

Chloride (a,

p. p. m.)

15

15

15

18

16

15

15

 Date

194$ 

Jan. 16. .....

Feb. 4... ....

Feb. 17.....

Mar. 4... ...

Mar. 19.. _

Apr. 28_ 

Specific 

Conductance 

(KX10«

at25°C.)

45.2

50.2

43.4

45.6

42.7

40.9

47.7

46.5

Chloride 

(01, 

p. p. m.)

15

15

15

15

15

15

13

15

Date

1948 

May 22.....

July 9 

July 24.. ....

Aug. 6 ......

Aug. 22-... .

Sept. 4 

Specific 

conductance 

(KX10«

at25°C.)

45.1

47.1

48.2

46.6

45.9

46.5

40.4

43.7

Chloride 

(01, 

p. p. m.)

18

14

Id

17

16

16

15

. 14

1

SNAPPER CREEK CANAL AT INGBAHAM HIGHWAY

1941 

Oct. 1 _.

Oct. 17 __ .

Oct. 31 

Nov. 14. 

Nov. 28 

Dec. 24 

1949

99.9

2,890

150

760

3,950

166

4,230

187

10,100

322

2,290

14,400

378

15,200

1942 

Jan. 16 

Feb. 4 

Feb. 17 

Mar. 19 

Apr. 2.......

Apr. 28 

4,170

1,160

660

156

551

1,070

1,340

138

15,200

3,280

1,940

335

1,550

3,380

4,180

278

194$ 

May 22 

July 9 

July 24 .

Aug. 22.....

184

80.9

96.4

92.0

2,120

806

885

113

412

116

156

146

7,310

2,425

2,700

211

SNAPPER CREEK CANAL AT NORTH KENDAL DRIVE AND RED RD.

1941

Oct. 1 .. 

Oct. 17 

Oct. 31 

Nov. 14 ....

Nov. 28 

Dec. 24. ....

1948

Jan. 3 

36.5

42.1

46.9 

40.9

39.1 

45.3

44.9

13 

14

15 

15

14 

14

15

1949 

Jain. 16 ___

Feb. 4... ....

Feb. 17 

Mar. 4... ...

Mar. 19 

Apr. 28 

46.7 

51.4

46.3

4ft R

45.2, 

45.0

49; 0 

48.7

13 

13

14 

14

15 

14

15 

16

194% 

May 22 __ . 

June 9. ......

June 24 _ 

July 9 ...

July 24......

Aug. 22 __ .

Sept. 4 ...

48.9 

45.6

48.0 

46.3

45.4 

48.6

44.2 

45.3

17 

15

14 

16

16 

17

13 

13

SNAPPER CREEK CANAL AT, U. S. HIGHWAY 1

1941

Oct. 1 

Oct. 17 

Oct. 31 

Nov. 14 

Nov. 28 

Dec. 24 

4948

Jan. 3 ....

45.2

43.4

43.8

45.5

41.9 

45.2

46.5

13

14

16 

14

14 

14

14

194i 

Jan. 16 

Feb. 4 

Feb. 17. 

Mar. 19 

Apr. 28 . 

May 8 ......

47.0 

51.5

46.0

4f> A.

46.2 

45.2

49.2 

47.8

13 

13

13 

14

13 

13 15 

15

1948 

May 22.....

June 24 ...... 

July 9.. _ ..

July 24 .

Aug. 22. _ . 

Sept. 4. .....

49.0

. 45.1

47.8 

46.5

44.8 

46.1

43.5 

43.6

If 

U

U 

U

U 

It

1< 

1<

SNAPPER CREEK CANAL AT KENDAL RD.

1941 

Oct. 1- .... 

Oct. 17 

Oct. 31. .... 

Nov. 14 

Nov. 28 

Dec. 24.. ...

. 194S

Jan. 3 ......

42.3 

40.2

44.2 

45 1

38.7 

43.1

46.1

13

14

14 

, 15

13 

13

12

194$ 

Jan. 16 

Feb. 4 

Feb. 17. _ .

TWnr A.

Mar. 19 

Apr. 2_ .

Apr. 28 

412

50.5

46.0 

45.6

46.5 

44.9

48.8

47.8

13 

13

13 

14

13 

13

15 

16

194i 

May 22. .

June 24. ..... 

July 9. 

July24 . 

Aug. 6- 

Aug. 22. . 

Sept. 4 ...

48.7

45.7

47.1 

46.4

44.7 

45.9

43.0 

42.3

16 

15

14 

14

15 

18

13 

14
FLINT RIVER, AT BATNBRIDGB, GA.

[Composites of daily samples collected at gaging station at Decatur County Memorial Bridge on IT. S. Highway 84. D

Date

of collection

Oct. 1-10, 1941 _ 

Oct. 11-20... _ .

Oct. 21-81. __ .

Nov. 1-10. 

Nov. 11-20 

Nov. 21-30... .

Dec. 1-10 . __

Dec. 11-20.......

Dec. 21-31 

Jan. 1-10, 1942 

Jan. 11-20 ___ .

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

Feb. 1-10 

Feb. 11-19 

Feb. 20-28 

Mar. 1-10 . _ .

Mar. 11-20 

Mar. 21-31 

Apr. 1-10... __ .

Apr. 11-20 

Apr. 21-30 

May 1-10 _ . _ .

May 11-20 iMay 21-31.. 

June 11-20 

June 21-30 .......

Julyl-10... __ .

July 11-20 

July 21-31. 

Aug. 1-10.. .

Aug. 11-20 

Aug. 21-31 ....

Sept. 1-10.... _ .

Sept. 11-20 

Sept. 21-30.......

Average 

Mean 

dis-

(secondfeet)

3,525 

4,975

4,017

3,388

3,442

3,388

4,964

6,965

14,450

26,680 

13,870

9,980

9,734

10,950

19,540

16,860

20,120

28,440

17,040

13,100

8,478

6,833

5,873

6,513

5,520

7,286

8,178

7,906

6,817

5,957

6,848

7,251

8,688

5,590

5,610

4,926

9,547

Temperature 

(8F.X

78 

73

72

66

60

61

62

54

55

50 

48

53

52

53

50

50

59

61

62

66

69

72

73

74

76

80

80

79

81

81

80

80

80

76

79

75

........

Sus«

pended 

matter

2 

6

6

5

3

2

18

16

31

31 

17

11

10

16

30

25

23

53

44

16

12

9

8

8

13

22

23

10

7

11

8

19

38

19

10

16

Oxyge

SUl

Unflltered

3.6

4.4

4.3

4.5

4.1

4.1

5.2

5.2

5.6

6.6

4.4

3.7

3.4

4.2

5 6

6.1

5.2

6.2

4.0

4.4

4.0

3.4

3.0

2.6

2 2

3.4

4.2

3.9

3.4

2.2

3.1

3.5

3.0

2.4

2.2

1.4

3.9

n conned

Filtered

3.2 

4.6

3.8

4.2

3 2

4.1

4.3

5.5

5.5

6.2 

4.8

2.6

3.4

3.5

4.4

3.6

3.6

7.4

4.0

3.7

3.2

3.8

2.8

3.0

2.4

2.6

3.9

2.6

2.8

2.3

2.4

3.0

2 4

1.2

1.2

1.2

3.5

8 

20

25

25

8

12

34

24

25

35

24

28

12

11

16

15

14

13

12

9

9

7

7

8

6

19

9

11

7

7

8

11

9

8

8

16

14

Silica

(SiOz)

8.3 

9.2

o n

9.2

8.6

ft a

8.5

9.2

8.0

6.7 

7.5

9.2

a 1

7.7

6,5

ft Q

5.9

6.3

7.5

8.4

8.9

9 ,1

10

9.9

10

10

9.6

9.1

9.4

9.2

9.9

9.5

10

11

8.9

8.5

8.7

Iron

(Fe)

0.01 

.12

.13

fU

.08

.10

.18

04

03

.02 

.01

.3

.03

.02

.01

.01

.01

.01

04

.01

.01

.01

.01

.02

.03

.15

.02

.01

.01

.07

.10

.03

.01

.04

.02

.14

.05

Cal-

(Ca)

18 

16

19

21

20

19

16

13

11

6.5 

15

16

15

13

8.8

11

11

8.7

15

16

21

22

24

20

22

17

17

18

20

21

17

18

14

21

19

21

17

Magne-

(Mg)

1.3 

1.2

1.4

1.4

1.0

.9

1.0

1.1

1.0

.7

9

-

.9

.9

.9

.8

.9

1.0

1.1

1.1

1.1

1.1

1.4

1.1

1.1

1.0

1.0

1.2

1.1

1.1

1.1

1.0

1.2

1.1

.9

1.0

1.0

So-

(Na)

2.4 

2.4

2.6

2.7

2.2

2.7

2.6

3.1

2.8

2.4 

2.7

2.8

2.7

3.0

2.5

2.5

2.7

3.1

2.9

3.4

3.1

3.1

3.3

3.1

3.0

3.0

2.5

2.7

2.6

2 7

2.6

2.6

2 4

2.6

2.4

2.4

2.7

Po

ta

siu

W
OOSTANAULA KIVEK AT ROME, GA

[Composites c< daily samples collected at Tubize Chatillon Corporation filtration plant intake, 0.5 mile above gagin

of Oostanaula and Etowah Rivers. Analyses in parts per 

Date 

of collection

Oct. 1-10, 1941 

Oct. 11-20.......

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

Nov. 1-10 _ 

Nov. 11-20.......

Nov. 21-30 

Dec. 1-10 

Dec. 11-20 

Dec. 21-31 .

Jan. 1-10; 1942... 

Jan. 11-20.. ... -

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

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

Feb. 11-19- -

Feb. 20-28- ...

Mar. 1-10 

Mar. 11-20 

Mar. 21-31.., 

Apr. 1-10. 

Apr. 11-20 

Apr. 21-30 

May 1-10 

May 11-20-. ....

May 21-31.. . .

June 11-20 ....

June 21-30. __ .

July 1-10... _.-..

July 11-20...... .

July 21-31. ;_ 

Aug. 1-10 

Aug. 11-20 ...

Aug. 21-31 -

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

Sept. 11-20... ...

Sept. 21-30....-

AverageMean 

discharge 

(secondfeet)

462 

503 

768 

842 

583 

1,033

1,455 

1,251 

3,180 

3,585 

1,340 

2,359

4,445 

7,344 

8,167 

6,055 

6,810 

10,080

3,180 

2,450 

1,650 

1,910 

1,355 

2,086

1,740 

2,645 

1,350 

2,175 

1,700 

1,168

2,107 

, 2, 450 

5,686 

1,560 

1,225 

1,723

2,734

Temperature 

<°F.)

76 

67 

65 

56 

48 

49

49 

43 

46 

41 

38 

44

44 

46 

. 44 

44 

56 

66

58 

60 

64 

68 

68 

69

77 

75 

78 

77 

80 

80

80 

77 

73 

74 

75 

67

Suspended 

matter

30 

29 

87 

100 

34 

86

78 

56 

110 

75 

11 

84

154 

238 

88 

70 

131 

154

36 

36 '23 

118 

49 

314

280 

263 

122 

313 

148 

110

254 

222 

152 

83 

50 

88

119

Oxygen consumed

Unfiltered

2.2 

2.4 

4.2 

49 

5.3 

5.3

5.2 

2.6 

3.4 

3.2 

7.4

3.2.

4.4 

3.6 

4.4 

3.6 

4.8 

5.0

3.6 

3.0 

2.7 

3.5 

2.6 

5.8

"5.5 

5.8 

2.7 

6.6 

3.3 

2.6

5.2 

4.0 

4.4 

1.8 

1.4 

2.6

4.0

Filtered

1.4 

2.2 

4.1 

3.3 

3.8 

3.1

4.1 

2.2 

2.8 

2.4 

2.2 

2.4

2.6 

2.6 

5.4 

6.6 

2.0 

2.5

1.8 

2.4 

2.4 

' 2.1 

2.0 

1.6

1.4 

1.6 

.6 

1.1 

.8 

1.0

1.1 

.6 

1.2 

.4 

.4 

.6

2.2

Color

6

7 

7 

14 

6 

20

12 

5 

8 

12 

2 

9

7 

6 

10 

7 

7 

7

5 

6 

3 

4 

3 

5

51 

5 

4 

3 

5 

2

6 

6 

7 

5 

6 

5

7

Silica 

(SiO2)

7.8 

9.0 

7.4 

7.6 

8.4 

8.2

7.5 

8.1 

7.3 

7.8 

8.0 

6.4

6.6 

5.5 

5.8 

6.7 7.1' 

5.9

8.0 

9.2 

7.4 

8.1 

9.6 

8.2

7.6 

7.1 

8.4 

7.2 

7.9 

8.0

7.0 

6.7 

6.3

8.2 

7.8 

7.1

7.5

Iron 

(Fe)

0.01 

.01 

.03

. .08 

.01 

.05

.01 

.04 

.02 

.08 

.04 

.09

.02 

.01 

.03 

.01 

.02 

.01

.02 

.02 

.06 

.02 

.01 

.01

.02 

.01 

.02 

.01 

.02 

.01

.02 

.02 

.01 

.04 

.06, 

.02

.03

Calcium 

(Ca)

17 

16 

15 

11 

14 

12

12 

13 

12 

11 

14 

13

10 

9.3 

9.7 

11 

9.4 

8.0

12 

13 

13 

12 

12 

11

10 

9.4 

12 

9.8 

10 

11

11 

10 

8.8 

12 

12 

12

12

Magnesium 

(Mg)

4.2 

4.1 

3.6 

2.9 

3.9 

3.4

3.0 

3.1 

- 2.2 

2.4 

3.3 

3.1'

2.2 

2.1 

2.1 

2.2 

2.2 

1.9

2.8 

3.1 

3.2 

2.8 

3.3 

2.6

2.8 

2.4 

3.0 

2.5 

2.7 

3.1

3.0 

2.4 

2.0 

3.0 

3.0 

3.0

2.8

Sodium

(Na)

2.7 

3.1 

3.1 

2.6 

2.7 

2.5

2.5 

2.4 

2.1 

2.4 

2.0 

2.5

2.4 

2.1 

2.1 

2.0 

2.6 

2.3

2.6 

2.8 

2.7 

2.3 

2.3 

2.3

2.0 

2.0 

2.3 

2.1 

2.2 

2.4

2.0 

2.1 

1.6 

2.2 

2.1 

2.1

2.3

Po

ta

siu

(K
LOWER MISSISSIPPI RIVER BA

CANADIAN RIVER NEAR SANCHEZ, N. 

[Composites of daily samples collected at Sabinoso, N. Mex., about 5 nules upstream from gaging station, which is at 

from Lagartija Greek, 3 miles east of Sanchez, 8 miles downstream from-Mora River, and 25 miles southwe

Analyses in parts per millionj

Date of collection

Oct. 1-10, 1941... ....... . .........

Oct. H-20 .. .................. ..

Oct. 21-31 

Nov. 1,3-7, 11-12... ..............

Dec. 1-3, 8, 12, 15, 16, 20, 23-26 

Feb. 9-10, 1942....................

Feb. 11-19. .......................

Feb. 20-28........................

Mar. 1-7,9, 10...... ... ...........

Mar. 11-18, 20 

Mar. 21-31 

Apr. 1-10-.--- . ........-.-..

Apr. 11-13, 15-16.. ............

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

May 21-31-... 

June 1-7, 9-10 ____________

June 11-20.....-. ...............

June 21-28, 30... - ......... ..

July 1-5 ......................

July 6-10- .....................

July 11-20................ ........

July 21... ... ....... ...............

July 22-31... 

Aug. 1-2, 5-10--.. ..............

A 110 ? \

Aug. 11-12, 14-20........ -

Aug. 13........ ...................

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

Sept. 2-5, 7-10.'.. - _ 

Sept. 11, 13-20--.. - 

Sept. 12... ....... 

Sept. 21-30 .. ___ . _ . __ ....

Mean discharge 

(secondfeet)

824 

683 

1,082 

650 

258

135 

104 

77.3 

128 

105 

96.2

146 

521 

2,100 

1,790 

1,273

674 

347 

221

292 

171 

108 

450 

226

261 

602 

513 

412 

165

28,000 

11,730 

1,287 

1,350 

361

Specific 

conductance 

(KX10« 

at 

25° C.)

72.9 

90.6 

65.8 

76.3 

106

126 

129 

131 

132 

146 

142

129 

102 

64.1 

53.5 

61.1

70.3 

91.7 

102

102 

101 

132 

38.8 

116

98.4* 

54.3 

68.7 

126 

95.7

45.5 

86.5 

92.0 

' 62.9 

121

Silica 

(SiO2)

14 

15 

13 

11 

19

14 

12 

11 

13 

12 

12

12 

14 

12 

14 

13

12 

11 

11

14

14 

11

11

13

12 

12

14

Iron 

(Fe)

0.08 

.10 

.10 

.06 

.04

.08 

.11 

.10 

.14 

.18 

.12

.14 

.16 

.06 

.13 

.13

.09 

.08 

.11

.06

.12 

.06

.25

.07

.07 

.04

.04

Calcium

(Ca)

76 

90 

66 

79 

104

118 

123 

126 

123 

130 

123

112

84 

65 

57 

65

75 

90 

90

96 

95 

108

109

96 

60 

70 

127 

86

59 

88 

87 

76 

108

Magnesium

(Mg)

25 

34 

23 

28 

44

55 

59 

60 

61 

68 

67

59 

44 

22 

18 

21

25 

37 

43

41 

40 

56

44

37 

19 

23 

50 

38

12 

28 

34 

21 

51

Sodium

(Na)

46 

60 

42 

48 

72

97 

95 

92 

97 

113 

106

101 

81 

41 

33 

40

46 

66

78

8 

' 7 

1]

Potassium 

(K)

5.1 

5.3 

5.3 

3.4 

2.6

2.8 

1.2 

1.8 

2.2 

2.0 

2.2

2.4 

1.6 

2.2 

2.6 

3.2

3.0 

3.2 

3.8

0 

8 

8

88

75 

30 

49 

94

74

22 

56 

70 

37 

97

Bicarbonate 

(HC03)

178 

203 

171 

200 

218

227 

234 

234 

221 

210 

214

205 

187 

168 

160 

167

178 

186 

167

178 

162 

152 

116 

173

164 

153 

170 

170 

179

142 

145 

174 

202 

199

Sulfate 

(S04)

223 

302

377

498 

512 

52? 

532 

617 

585

522 

3Z& 

177 

141 

171

214 

329 

393

386 

387. 

568 

93 

451

377 

146 

208:

343 

1$

165 

468

C

r

(

1

1

1

1

1

2

2

2

2

2

2

2

1

1

1

1

1

1

2

2

2

2

2

1

1

1

2

1

1

1

1

2
18 QUALITY OF SURFACE WATEBS, 1942

CONCHAS RIVER AT VARIADERO, N. MEX.

[Composites of dafly samples collected at the Quintana Ranch approximately 4 miles upstream from the 

gaging station which is located on State Highway 104 at Variadero, approximately 14 miles west of Conchas 

Dam. Samples are obtained at this point only when rainfall is sufficient to cause the river to flow. 

Analyses in parts per million]

Date of collection

Oct. 1-2,1941.............

Oct. 3-5.. ____ .... .....

Oct. 6-7 

Oct. 8-9-.. ............

Oct. 22-23.. ...............

Oct. 24-31. __ . ______

Nov. 1-6. 7-10-.. 

Nov. 11-23 .........

Mar. 16-17, 1942......... ..

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

Apr. 21-25, 27-28 

June 24-28. ............

July 3-6, 10-12, 21-23 

Aug. 11, 16-16, 21, 30-31 

Sept. 1-3- ................

Specific 

conductance (KX10« 

at25°C.)

47.8

36.2

61.4

79.5

51.3

77 Q

86.7

96.2

49.9

47.3

49.2

62.4

69.7

62.7 

37.1

Calcium 

(Ca)

70

71

66

50

49

66

66

48

4fl

Magnesium 

(Mg)

28

32

11

13

12

17

22

18

O 9

Sodium and potassium 

(Na+K)

84

95

^26

36

37

58

66

65 

27

Bicarbonate 

(HC03)

166

130

196

241

167

218

234

240

172

160

IRQ

190

172 

142

Sulfate 

(SOO

222

254

79

94

90

135

169

149 

65

Chloride 

(Cl)

13

10

22

28

18

30

35

38

13

19

16 :

25

31

28 

9.0

Dissolved 

solids

554

608

270

291

287

388

438

393 

221

Total hardness 

as 

CaCOi

290

808

185

178

172

210

230

194 

140

RESERVOIR BEHIND CONCHAS DAM, N. MEX.

[Analyses in parts per million] 

MONTHLY COMPOSITE SAMPLES

Date of collection

Oct. 1, 8, 15, 22, 31, 1941.. 

Nov. 5, 13, 20.. ......

Dec. 4, 10, 17, 25.. 

Jan. 2, 8, 15, 21, 1942. _ -

Feb. 6, 20 _ ........

Mar. 2, 5, 12... _ . _ ...

Apr. 2, 10. 15, 25. ........

May 7, 8, 15, 28..........

June 3, 11, 17, 25. _ .....

July 2, 18, 24,30. . .

Aug. 6, 13, 20, 25 

Sept. 12, 17, 25. _ ... _ -

Oct. 1, 9, 15, 22, 1941 ..... 

Nov. 5, 13, 20 ........

Dec. 4, 10, 17, 25-.. ......

Jan. 2, 8, 15, 21, 1942. ....

Feb. 6, 20 - ..........

Mar. 5, 12, 21........ ....

Apr. 2, 10, 15, 25... _ ...

May 7-8, 15, 28. .........

Junfi 3, 11, 17, 25 

July 2, 9, 14, 30.... ......

Aug. 6, 13, 20, 25 

Sept. 12, 17, 25 ......

Oct. 1, 9, 15, 22, 1941 

Nov. 5, 13,20.-. ......

Dec. 4, 10, 17,25.-. __ .

Jan. 2, 8, 15, 21, 1942 

Feb. 6, 20, 26-. 

Mar. 5, 12, 21...... ......

Apr. 2, 10, 15, 25 

May 7-8, 15, 28.... ......

June3, 11, 17,25. ........

July 2, 9, 24, 30.. ........

Aug. 6, 20, 25. ......

Sept. 12, 17, 25 

Sampling

Station 1 '...

Station 2 » ...

Station 33...

Depth (feet)

............

..

....

 

............

----------

*

Specific conduct- 

(KX10» ance 

C. 25° at

46.4 

60.7

54.1

55.3

58.2

61.2

62.2

62.2

62.6

62.8

63.8 Aft a

46.6 

50.8

53.9

55.8

RO Q

61.1

61.8

62.2

62.4

62,4

63.8

60.9

46.2

KC\ 9

Hi K

56.0 58 9

61.2

62 3

61.8

62.9

RA O

65.2

61.0

Calcium (Ca)

....

60

61

60

....

59

62

60

....

60

62

61

1 Magnesium 

|(Mg) 

....

m

2?

23

 ..

Wi

23

19,

....

22

22

n

 OG%

§g

......

38

41

40

......

38

36

40

......

38

39

37

Bicarbonate 

(HCOs)

115 

131

137

140

146

146

149

141

148

153

154

139

114 

133

136

140

145

146

149

138

149

150

114 

128

137

141

144

145

145

138

Sulfate (SO<)

147

166

161

175

177

184

189

84

"147"

163

168

174

178

180

192

"154"

163

169

179

180

186

189

Chloride (Cl)

9.0 

10

10

10

12

13

13

13

14

7.0 

9.0

10

10

12

11

12

12

9.0 

9.0

9.0

11

11

12

12

10

! 

1

.....

382

394

394

380

386

395

.....

383

392

387

Total hardness asICaCOj 

......

240

242

244

238

249

244

......

240

245

242

See footnotes at end of table.

20 QUALITY OF SURFACE WATERS, 1942

RESERVOIR BEHIND CONC HAS DAM, N. MEX. Contlnuea

SAMPLES FROM DIFFERENT DEPTHS Continued

Date of collection

Apr. 28, 1942 ..........

Oct 15 1941

Tnn 17 1Q49

Apr. 28, 1942.............

;

Sept. 3,1942- 

'Oct. 15, 1941.............

-

Jan. 17, 1942.............

Apr. 28, 1942- - .

Sept. 3, 1942. 

Sampling 

point

Station 3 *...

Station 6 '...

Station 6 '...

Station 7 «...

Station 7 «...

Station 7 «...

Depth (fet)

25

50

75

102

107

112

117

199

127

25 

 60

eo

63

68

73

75

78

OK

50

75 

90

95

105 

110

OK

50 

75 

85 

on

95

100 

105

49 

98

25 

50

75

85

on

QK.

105

25

50

75

97

100

102

107

117

OK

50

70

75

80 

85

90

95

40 

SO

Specific conduct- 

(KX10« ance 

C.) 25° at

65.5

64.2

66.5

62.7

62.2

63.9

61.9

60.6 

60.6

94.4 

45.0

44.8 

44.5

44.3

44.2

43.6

43.5

44.3 

49.6

55.5

55.7

55.5

55.2 

56.6

70.8

72.1

72.5 

72.5

63.6

65.6

73.3 

62.4 

71.1 

67.8

62.1

62.0 

62.1

65.4

50.1 

61.2 

46.4

46.0 

50.1

51.9

54.3

55.0

56.0

59.6

63.9

59.4

59.3

60.5

60.3

62.9

63.3

64.2

70.2

78.6

77.1 

68.0

71.6

70.7

62.6

61.9

61.7 

63.4

62.6

70.4 

68.7

48.7 

60.6

Calcium (Ca)

61

58

114

44

44

57

74

62

62 

60 

58

62

64

49 

76

47

6?

86 

64

58

76 

66

50 

70

Magnesium 

(Mg)

Sfl

22

46

14

14

18

27

m

22 

21 

21

23

21

15 

21

17

21

28 

26

22

27 

24

15 

18

4I"U^

§

s|R

BQ

38

32

52

28

26

37

46

40

46 

40 

42

36

51

38

28

23

38

46 

27

33

31

52

34 

38

Bicarbonate 

(HCOs)

140

142

145

130

123

126

124

130 

133

614 

116

114 

116

114

114

113

112

114 

154

138

165

144.

144

149 

138 

133 

142

138

146

145

144

128 

180 

115

114 

122

123

132

132

133

140

178

145

201 

140 i<tn

129

126

124 

122

132

200 

136

113

155

(SOSulfate )4

187

180

67

118

115 

120

160

235

186

190 

184 

188

184

209

139 

168

128

178

176

181

237 

186

183

184 

235

147 

187

Chloride (Cl)

14

8.0

10 

9.0

8.0 

9.0

7.0

9.0

8.0

7.0

8.0 

8.0

12

12

14

17 

13 

13

11

15

12 

10 

7.0

7.0 

7.0

9.0

9.0

8.0

9.0

10

10

11

13

12

10

9.0 

14

10

7.0

Dissolved solids

392

364

591

268

263

352

475

395

410 

386 

388

388

431

316 

392

278

384

509 

384

367

426 

458

312 

396

hardness Totalas 

CaCOs

246

235

474

118

118

216

296

245

245 

236 

231

249

246

184 

276

188

241

330 

266

235

300 

263

186

248

i Conchas River arm of reservoir, approximately 3,000 feet above dam. 2 400 feet above dam. 

9 Canadian River arm of reservoir, 800 feet above dam. 4 Elevation 4,201 feet. 

' Elevation 4,096 feet. «.Elevation 4,081 feet. 

. 7 Conchas River arm of reservoir, Smiles-above dam. 

* Canadian River arm of reservoir, 5 miles above dam.
PEASE RIVER NEAR CROWEMJ, TEX

[Composites of daily samples collected at gaging station at bridge on Texas Highway 283,4 miles upstream from Rag

Ry. bridge, and 8 miles north of Crowell. Drainage area, 2,937 square miles. 

Date of collection

July 1-4, 7-10, 1942. _______ _ ...

July 11-17..

July 21-25........ ...

July 26-31- -. __ _.

Aug. 1-4............................

Aug. 12, 14-15, 18-20.. ..............

Aug. 16-17 .

Aug. 21, 23-24, 26-31-.-...-. ...

Sept. 1, 3-6, 10 

Sept. 7-9. 

Sept. 11-18. . 

Sept. 19-20... ....

Sept. 21-23, .. . .

Sept. 24-30 _ 

Mean discharge 

(secondfeet)

6.09 

11.4 

87.3 

13.1

.32 

81.4 

113 

38.1

25.7 

233 

18.8 

6,835 

372 

123

Specific 

conductance 

(KX105 

at 25° C.)

1,390 

1,205 

1,024 

1,627

1,073 

977 

594 

1,126

1,230 

520 

1,163 

277 

499 

947

Silica 

(SiOj)

20 

17 

19 

17

16 

16 

19 

14

21 

21 

20 

20 

23 

21

Iron 

(Fe)

0.05 

.08 

.03 

,03

.11 

.10 

.13 

.08

.40 

.05 

.03 

.06 

.05 

.05

Calcium 

(Ca)

893 

840 

640 

922

644 

682 

450 

764

804 

445 

773 

306 

342 

548

Magnesium 

(Mg).

201 

149 

92 

171

126 

100 

52 

122

170 

52 

133 

35 

54 

98

Sodium 

(Na)

2,243 

1,887 

1,637 

2,790

1,744 

1,514 

832

1,788

1,939 

664 

1,856 

250 

706 

1,546

Potassium 

(K)

21 

18 

14 

19

15 

15 

12 

18

21 

13 

16 

11 

13 

14

Bic

bon

(HC

-
WESTERN GtTLF OF MEXICO BASIN

BRAZOS RIVER NEAR SOUTH BEND, TE

[Composites of daily samples collected at gaging station at bridge en Texas Highway 67, 0.3 mile upstream from Wi

Clear Fork of Brazos River, and 2.0 miles northeast of South Bend. Drainage area, 21,600 squ

Date of collection

Jan. 15-20, 1942 .................

Jan. 21.. ...........................

Jan. 22-31.. ......................

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

Feb. 11-13, 15-19... .................

Feb. 20-21, 24-28-.. 

Feb". 22-23... .......................

Mar. 1-8, 10. _ ....................

Mar. 11-20... _ ....................

Mar. 21-31.... . _ ...........

Apr. 1-7...... . __ .................

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

Apr. 11-13.. . . __ .

Apr. 14-15... . ______ .... _ ....

Apr. 16- ..- 

Apr. 17-18 ____ .... 

Apr. 19-20.... ... __ .......... ....

Apr. 21................... ......

Apr. 22-24, 28-29............... _ -

May 1-4. __ .... _ .. __ ... __ ...

TV/fotr lt_ft

May 7-10......................... ..

May 11-19 _ ......... __ ... __ - May20..__... _ . ___ ....... .

May 21-22, 24......... _ ...........

May 23, 26-30.... ....... ...........

May 31... _.. ... 

Mean discharge 

(secondfeet)

238 

[ 204

152 

134 

267 

469

125 

89.1 

63.1 

463 

22,100 

2,000 

2,000 

2,400

1,860 

8,146

} 6, 117 

1,270

499 

296 

1,483 

934

J3.316 

934 

295

Specific 

conductance 

(KX105 

at 25° C.)

724 

f 281 

I 748 

709 

669 

575 

393

689 

718 

738 

673 

52.0 

127 

250 

828

432 

205 

/ 67.0 

1 106

, 212

254 

362 

150 

253 

/ 67.1 

1 103 

181 

489

Silica 

(SiOj)

8.0

8.0

Iron 

(Fe)

0.03

.06

Calcium 

(Ca)

370

362 

355 

352 

324 

238

359 

388 

402 

393 

36 

91 

150 

324

241 

128

73 

122

147 

192 

108 

146

74 

106 

199

Magnesium 

(Mg)

92

88 

95 

91 

93 

72

109 

112 

118 

122 

8.0 

24 

43 

81

55 

28

15 

27

34 

50 

23 ' 

39

17 

28 

51

Sodium 

(Na)

Potassium

1,131

1,199 

1,103 

1,024 

852 

525

1,047 

1,124 

1,117 

986 

56 

152 

315 

1,396

621 

305

120

277

340 

518 

164 

330

110 

227 

789

Bicar

bonat

(HCO

25

173 

240 

. 240 

238 

254 

265

22

217 

21

21

94 

15

16

16

16

13

18

14

16

18

19

14

18

12

14

15

17
June 9- 10.; __ _ ________

Junel3-i4_._ __ . __ . _ .........

June 16-17............ .T ......._._

June 11-12, 18-20__.__..__ ____ ...

June 21-26, 28-30 ___________

Julyl-10..._.......__......,__._._..

July 11-14.. ........................

July 15-20.. .... ._..........__._-.

July 21, 23-27, 30-31 ..............

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

Aug. 11-20....................... ...

Aug. 21-23... __ ...................

Aug. 24-31..........................

Sept. 7-9.... ______ .... ........

Sept. 10......... ____ ....... __ .

Sept. 11-14.. _____ ...... ___ ..

Sept. 16-20... __ . __ .. ..........

Sept. 21, 27-30......................

396

1,685

1,000

228

4,493

2,279

394

96.0

588

192

31.1

10.8

39.3

364

1,557

1,159

a, ooo

2,655

406

2,736

1,309

jUQ

183

339

586

87.1

237

450

593

457

706

837

783

779

825

378

249

f 58.0

1 Qfi 4

149

283

184

250

100

200

271

58

163

262

304

261

404

406

400

405

496

278

191

40

130

199

156

110

59

22

49

56

11

33

48

71

55

60

79

97

102

80

41

28

7.3

24

29

28

24

887

243

475

954

74

296

653

906

650

1,119

1.384/

1,169

1,168

1,306

489

317

60

150

336

420

251

1

1

17

1

1

1

1

15

13

10

14

14

15

10

10

10

9

10

11

11

13

12
BRAZOS RIVER AT POSSUM KINGDOM DAM, NEAR 

[Composites of daily samples collected immediately below dam on Brazos River, 2.6 miles upstream from Loving 

reported are for gaging station at bridge on Palo Pinto-Graford Highway, 300 feet downstream from Dark Valley 

miles downstream from Possum Kingdom Dam. No appreciable inflow between dam and gaging station except 

22,550 square miles; above gaging station, 22,760 square miles. Analyses in parts per million]

Date of collection

Jan. 16-16, 20, 1942 ..............

Jan. 17-19-- 

Jan. 21-25, 27-31 

Feb. 2-9. 

Feb. -11-19 ... . -

Feb. 20-21, 23-24, 26-28.. 

Mar. 1-10 

Mar. 11-20. 

Mar. 21-31 -----

Apr. 1-6, 8-10 

Apr. 12, 14-19 

Apr. 13, 20 - ..:. .

Apr. 21-22, 26, 29. 

May 1-10 . 

May 11-17, 19-20- 

May 21-23, 25-31 __ . . .

June 21-22, 24-30 

July 1-10. -. - --

Julyll-20 

July 21-31.. . 

Aug. 1-10 

Aug. 11-20 ___ 

Aug. 21-31 

Septr J-4fr--_ - - r. ..-.-... ... ..... ...

Sept. 11-20. 

Sept. 21-30 _ ,- - 

Mean discharge 

(secondfeet)'

183 

4,703 

131 

189 

134 

129

129 

116 

118 

6,257 

107 

13,300 

10,620

1, 115 

3,518 

2,058 

2,991 

3,643 

577

242 

303 

304 

272 

251 

304

4,223 

701

1,746

1,750

Specific 

conductance 

(KX10« 

at 25° C.)

333 

167 

350 

367 

359 

335

309 

300 

300 

219 

234 

165 

165

204 

191 

193 

184 

159 

180

180 

178 

'171 

168 

164 

167

- - its

157 

162

177

Silica 

(SiOj)

11

9.6

_

Iron 

(Fe)

0.15

.08

Calcium 

(Ca)

188 

120' 

191 

194 

193 

186

174 

172 

172 

147 

146 

112 

116

129 

125 

126 

119 

108 

119

118 

118 

111 

108 

108 

106

94 

126 

106

119

Magnesium 

(Mg)

43 

21 

41 

43 

42 

42

40 

37 

36 

29 

. 29 

21 

20

26 

25 

26 

23 

21 

23

24 

24 

22 

21 

20 

21

18 

21 

22

23

Sodium

(Na)

Potassium 

(K)

450 

187 

604 

623 

608 

483

431 

431 

408116 

324 

312 

189 

204

265 

241 

240 

220 

191 

228

229 

223 

216 

213 

209 

207

182 

155 

192

220

Bicarbonate 

(HC03

190 

136 

188 

192 

189 

189

176 

181 

186 

161 

, 163 

139 

137

153 

148 

151 

148 

136 

143

148 

144 

147 

148 

148 

142

136 

138 

149

144
RIO GRANDE AT SAN ACACIA, N. M

[Composites of daily samples collected at the San Acacia diversion dam, which is 0.2 mile above the San Acacia ga

from Eio Salado, Drainage area, 26,770 square miles, including 2,940 square miles in closed basin in northern 

Date of Collection

Oct. 1-6, 1941.. 

Oct. 7-10 

Oct. 11-20. -..-......... -

Oct. 21-25 

Oct. 26, 27, 29-31 . 

Nov. 2-10-. ._ - 

Nov. 11-20- ... .-_ 

Nov. 21-30 

Dec. 1-4,7-10 

T"\rtrt K A

Dec. 11-20.. 

Dec. 21-31. .- . _ .

Jan. 1-10, 1942. __ . _ ... _ .. 

Jan. 12, 13, 16-20 

Jan. 2T-31..... .............. ......

Feb ' 1-10

Feb. 11-14, 16-19- ... .-.

Feb. 20-28.. _ .._. 

Mar. 1-10 

Mar. 11-20 _____ 

Mar. 21-31 . _ _ . _ 

Apr. 1-10__ ... .... 

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

 Apf.^i-30. - . _ _. .

May 1-10.. ____ ..._.'.... __ .

May 21-31 _____________

June 21-24, 26-50 ........ ....

Julyl-10 .

July 11-20-.... ........ .. _ ..

July 22-30..... -_. ... . 

Mean 

discharge 

(secondfeet)

3,053 

1,858 

3,046 

3,680 

5,058 

3,801 

2,304 

1,999

1,672 

1,820 

1,774 

1,337 

1,162 

1,144 

1,054

1,040 

1,035 

977 

1,085 

1,591 

1,949

3,429 

7,470 

11,950 

9,335 

11,540 

11,0§0

10,700 

7,402 

3,342 

1,006 

748 

549

Specific 

conductance 

(KX105 

at 25° 

C.)

106 

66.8 

52.0 

44.5 

70.2 

43.4 

46.6 

51.1

52.3 

95.0 

54.4 

56.2 

58.0 

56.9 

56.9

55.2 

56.6 

59.8 

58.1 

55.6 

52.5

51.4 

44.7 

42.7 

39,3 

33.0 

30.7

26.7 

27.3 

33.6 

50.9 

53.3 

71.1

Silica 

(SiOs)

24 

28 

26 

28 

23 

24 

29 

30

30

28 

28 

26 

30 

28

26 

28 

28 

30 

29 

25

27 

26 

17 

24 

21 

22

21 

21 

24 

27 

26 

24

Iron 

(Fe)

0.08 

.04 

.05 

.04 

.04 

.08 

.05 

.04

.04

.04 

.02 

.02 

.02

:o2

^02 

.02 

.02 

.02 

.02 

.02

.04 

'.04 

.04 

.04 

.04 

.06

.07 

.06 

.11 

.07 

.06 

.08

Calcium 

(Ca)

. 91 

60 

52 

46 

67 

44 

46 

51

51 

75 

52 

56 

56 

56 

55

54 

56 

58 

54 

56 

54

51 

46 

46 

40 

36 

34

31 

. 30 

35 

53 

54 

69

Magnesium 

(Mg)

19 

12 

9.8 

8.5 

13 

8.5 

8.7 

9.8

9.8 

17 

9.8 

11 

11 

11 

11

11 

12 

11 

10 

10 

10

11 

9.4 

9.2 

9.0 

7.9 

7.3

6.8 

6.4 

6.7 

9.5 

10 

13

Sodium

(Na)

12 

6 

46 

3 

6 

38 

39 

42

46

10* 

49 

49 

51 

48 

50

47 

47 

57 

56 

50 

45

40 

32 

28 

27 

23 

13

16 

19 

22

45 

48 

69

Potassium 

(K)

I 

6 

3.6 

8 

9 

2.9 

3.2 

2.1

1.9

2.2 

5.4 

5.4 

5.2 

5.4

5.0 

4.4 

5.0 

4.0 

3.4 

3.6

5.0 

3.8 

3.6 

4.0 

3.6 

3.6

3.2 

2.8 

5.6 

4.0 

4.5 

5.0

Bicarbonate 

(HC03)

178 

165 

155 

136 

151 

142 

147 

160

164 

200 

163 

170 

174 

169 

170

164 

169 

183 

170 

160 

150

136 

125 

121 

115 

114 

97

105 

99 

111 

158 

159 

170

Sulfate 

(S04)

'342 

157 

117 

91 

200 

86 

88 

96

100 

175 

105 

HO 

115 

111 

112

108 

113 

116 

115 

122 

122

120 

96 

96 

85 

65 

54

45 

49 

60 

108 

112 

182

C

r

(

4

3

1

1

2

1

2

2

2

10

2

2

2

2

2

2

2

3

3

2

1

1

1

2

3
RIO GBANDE: AT SAN ACACIA, N. MBX.-co

Date of Collection

Aug. 2-4, 6, 7, 9, 10 1.-.-....- 

Aug. 11-14, 16-20 _____ ....

Aug. 21-24, 26-31. _________ ..

Aug. 25... .... ____ ...

Sept. 1-10- _ ... __ ... ...

Sept. 11-20. ______ ____ .

Sept. 21-30

Mean 

discharge 

(secondfeet)

678 

689 

616 

476 

990 

740 

1,270 

622

3,255

Specific 

conductance 

(KX10« 

at 25° 

0.)

69.6 

196 

68.8 

73.2 

209 

61.1 

66.4 

67.3

43.6

Silica 

(SiOs)

25

29 

28

27 

22 

26

23

Iron 

(Fe)

0.08

.11 

.06

.07 

.10 

.07

.06

Calcium 

(Ca)

67 

182 

68 

68 

197 

60 

64 

67

45

Magnesium 

(Mg)

13 

43 

12 

13 

44 

11 

12 

11

9.1

Sodium 

(Na)

66 

2 

63 

74 

21 

58 

64 

53

34

Potassium 

(K)

4.6 

6 

5.8 

6.0 

51 

4.0 

2.6 

4.8

3.7

Bicarbonate 

(HCOs)

179 

326 

199 

188 

239 

172 

170 

172

129

Sulfate

(S04)

164 

614 

154 

184 

874 

144 

168 

126

93

Ch

ri

(C

33 

138 

29 

34 

79 

24 

29 

26

16
PBCOS RIVER NEAR GUADALUPE, N. M

[Composites of dally samples collected from river channel between Alamogbrdo Dam and the gaging station wh

stream from Alamogordo Creek and 4H miles northeast of Guadalupe. Drainage area, 4,390 

Date of collection

Oct. 1-8, 1941 ___ . .....

Oct. 12-20- _ -

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

Nov. 1-10. _______ .

Nov. 11-20-. 

Nov. 21-30 ______ 

Dec. 1-10 ___ . ____ .

Dec. 11-20-.. .........

Dec. 21-31... ___ .

Jan. 1-10, 1942 _ ..... ...

Jan. 11-20..... . ..

Jan. 21-31 ________

Feb. 1-10-... _ .

Feb. 11-20...- ..... 

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

Mar. 1-10. _ ... ... _-___ .

Mar. 11-20.. ............

Mar. 21-39, 31..... ...

Apr. 1-10...... ..........

Apr. 11-16, 18-20. ....

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

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

May 11-20. ___

May 21-31 ___ ... _ .

June 1-2, 4-10. ..........

July 1-10... 

July 11-20.. ______ ..

July 21-31 ............

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

Aug. 12-20. ______ ...

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

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

Sept. 11-29 __ ... __ .

Sept. 21-30...... .. 

Weighted average.. ...

Mean 

discharge 

(secondfeet)

1,757 

625 

1,173 

345 

460 

81.4

281 

60.4 

170 

69.4 

155 

199

518 

14.2 

11.0 

7.95 

35.7 

58.5

69.9

574 

2,699 

76.6 

1,480 

779

264

586 

150 

336 

181 

194

92.6 

367 

384 

4,622 

1,389 

279

568

Specific 

conductance 

(KX10» 

at 25° 

C.)

62.9 

64.1 

67.5 

75.2 

74.5 

79.7

83.3 

89.9 

94.7 

101 

99.8 

101

114 

117 

117 

116 

115 

126

120 

121 

117 

104 

91.3 

88.6

84.8 

135 

85.0 

84.0 

87.1 

86.8 

90.9

97.6 

98.9 

99.9 

103 

95.5 

94.5

93.7

Silica 

(SiOs)

13 

11 

12 

12 

10 

12

10 

12 

13 

18 

14 

16

16 

14 

14 

13 

12 

12

12 

10 

19 

18 

14 

13

13

12 

12 

13 

13 

13

14 

12 

11 

10 

9.5 

13

13

Iron 

(Fe)

0.03 

.02 

.05 

.05 

.08 

.08

.07 

.03 

.03 

.05 

.06 

.05

.06 

.02 

.02 

.02 

.03 

.03

.03 

.03 

.03 

.03 

.03 

.03

.04

.04 

.04 

.05 

,06 

.08

.05 

.09 

.09 

.10 

.09 

.06

.06

Calcium 

(Ca)

98 

98 

102 

112 

114 

124

130

138 

148 

154 

154 

156

176 

179 

186 

185 

187 

212

198 

200 

190 

166 

146 

140

137 

198 

136 

135 

137 

133 

143

152 

158 

161 

180 

164 

160

153

Magnesium 

(Mg)

12 

12 

13 

15 

16 

17

18 

20 

21 

23 

23 

24

28 

29 

29 

27 

26 

29

27 

25 

30 

25 

19 

19

20 

46 

21 

20 

21 

21 

22

22 

21 

23 

22 

21 

22

21

Sodium 

(Na)

19

5 

23 

» 

26 

3

29 

3 

33 

36 

37 

36

46 

5 

4 

44 

45 

42

37

45 

29 

26 

28

27

17 

4 

17 

19 

23 

30 

29

33 

33 

34 

27 

26 

24

27

Potassium 

(K) .

, 2.3

2.4 

0 

1.9 

1

2.2 

5 

2.0 

3.4 

3.4 

3.7

3.8 

2 

7 

3.8 

4.0 

2.0

2.6 

2.4 

3.8 

3.8 

3.6 

3.6

4.4

:8

4.4 

3.6 

3.8 

2.7 

2.4

2.8 

3.2 

3.8 

4.0 

3.6 

 4.0

4.3

Bicarbonate 

(HCOs)

93

98 

104 

115 

116 

125

123 

125 

129 

129 

133 

.130

136 

134 

139 

137 

140 

131

129 

132 

116 

122 

117 

117

110 

126 

115 

118 

127 

81 

92

106 

108 

110 

97 

104 

93

108

Sulfate 

(S04)

230 

232 

244 

272 

273 

298

316 

344 

372 

398 

393 

401

474 

491 

494 

486 

486 

544

603 

514 

493 

414 

353 

342

324 

588 

320 

316 

324 

365 

376

387 

402 

414 

462 

410 

408

385
. . PECOS RIVER NEAR ACME, N. MEX.

f Composites of daily samples collected at highway bridge on U. S. Highway 70, approximately 3 miles above the g

station, 3Ji miles downstream from Salt Creek, 5 miles southwest of Acme, and 13 miles northeast of Roswell. D

Date of collection

Oct. 1-10, 1941.. ......

Oct. 11, 14-20-. _ ...

Oct. 12-13 

Oct. 21-26. ........ ...

Oct. 27-29, 31.... ... __ -

Nov. 1-3....... .........

Nov. 4-10-... .. 

Nov. 11-12, 14-20.. 

Nov. 21-22... __ -

Nov. 23-30-. _ .........

Dec. 1-10........ _ .....

Dec. 11-15..... .. _ .....

Dec. 16-20 

Dec. 26-31.. .............

Jan. 1-10, 1942 _ ....

Jan. 11-] 6. ... 

Jan. 17-20...... ......

Jan. 21-31 . 

Feb. 1-10 ._ __ ....

Feb. 11-12 . - 

Feb. 13-18, 20-.- __ .

Feb. 19....... ...........

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

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

Mar. 11-20.. ............

Mar. 21-31...... _ .....

Apr. 1-6, 9-10. ..........

Apr. 7-8 _

Apr. 11-17...............

Anr. 18-20..... __ .....

Mean 

discharge 

(secondfeet)

3,326 

962

3,120 

1,323 

1,520 

386 

556

159

329 

309 

124 

95 2 229'

192 

92.2 

229 

227

443

90.1

61.2 

61.8 

46.8 

70.4

86.6 

44.0 

126 

1.079

Specific 

conductance 

(KX106 

at 25° 

C.)

180 

147 

200 

144 

247 

172 

252 

191 

188 

363

242 

238 

387 

450 

264 

310 

431 

264 

244

204 

211 

391 

926 

537 

552 

619 

429

456 

878 

391 

243

Silica 

(SiOj)

16 

16

15 

16 

16 

19 

19

18

20 

16 

17 

15 

13 

15 

14

14 

16

16

19 

16 

17 

13

14

12 

20

Iron 

(Fe)

Calcium 

(Ca)

278 

206

220 

306 

219 

315 

242

426

299 

287 

432 

494 

312 

347 

468 

315 

293

259

422

528 

522 

576 

464

464 

560 

415 

326

Magnesium 

(Mg)

37 

30

30 

61 

38 

63 

47

106

68 

63 

109 

133 

74 

84 

123 

73 

66

54

105

143 

149 

172 

122

126 

185 

114 

72

Sodium 

(Na)

Potassium 

(K)

96

85

67 

183 

116 

198 

133

311

171 

177 

358 

430 

198 

262 

415 

203 

191

142

378

602 

632 

725 

419

470 

1,291 

350 

144

Bicarbonate 

(HCOg)

125 

117 

132 

108 

141 

130 

150 

143

176

154 

152 

176 

196 

138 

158 

175 

161 

152

145 

140 

156

180 

152 

148 

144

136 

149 

125 

126

Sulfate 

(S04)

744 

547

591 

848 

599 

914 

688

1,274

868 

814 

1,267 

1,531 

940 

1,024 

1,435 

938 

876

754

1,294

1,679 

1,704 

1,926 

1,495

1,495 

1,819 

1,300 

969

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

May 1-4..-.- ..........

May 5-10... ......

May 11-12..-. _ .......

* May 13-20... ..........

2 May 21-27.... ......

g May 28-31... ........... B

f June 21-28, 30. . ..

July 1-10- . .

,0 Julyll-20 ... 

July 21-31 

Aug. 1-7.-- _ 

Aug. 8-10--. 

Aug. 12-21 ..............

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

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

Sept. 11-20 

 Sept. 21-30...... ........

3,160

365

117

97.0

1,299

1,810

182

164

466

128

16.0

334

112

223

48.6

160

315

379

602

5,206

1,359

dflfi

712

l&i

220

358

371

146

212

195

144

201

1,350

185

213

175

293

202

206

156

- 251

194

177

181

190

18

13

10

13

13

13

13

15

12

11

22

15

17

 15

19

17

20

13

15

15

15

16

260

01 o

447

464

216

202

302

259 '201

267

550

273

283

240

345

238

270

208

221

309

293

281

274

38

52

94

109

35

29

52

46

29

48

211

53

60

51

83

55

60

41

50

44

38

42

45

72

136

301

293

70

55

136

137

71

136

2,355

86

112

90

230

142

130

. 82

244

92

74

7Q

108

114

102

100

115

121

116

118

109

118

100

103

91

101

100

85

86

101

102

74

116

114

113

121

714

891

1,350

1,412

601

525

842

744

526

790

1,893

777

786

697

1,063

723

815

596

584

843

774

731

757
PECO8 RIVER NEAR ARTESIA, N. MEX

[Composites of daily samples collected at paging station at new bridge on Artesia-Lovington Highway, 4.2 miles e

miles north of McMillan Dam. Drainage area, 15,300 square miles. Anal

Date of collection

Oct. 1-7, 1941.. 

Oct. 8-10 .............

Oct. 11-20 

Oct. 21-22, 29-31 

Oct. 23-28. ... ..

Nov. 1-3- . 

Nov. 4-10 

Nov. 11-20.. 

Nov. 21-30. .

Dec. 1-10.. 

Dec. 11-20 

Dec. 21-31. 

Jan. 1-2, 4-10, 1942......

Jan. 11-20 

Jan. 21-31 ..... .

Feb. 1-10 - 

Feb. 11-13 ....... .

Feb. 14-20......... ...

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

Mar. 1-10 

Mar. 11-20 

Mar. 21-31. ... ... .

Apr. 1-10....-'... .....

Apr. 12-19.. 

Apr. 20. ..... ... ....

Apr. 21-24 ............

Apr. 25-30...... .........

May 1-3-... ........ .

May 4-10... .... ... ..

May 11- 15-. .......

Mean 

discharge 

(secondfeet)

10,140 

1,890 

1,693 

1,566 

4,812

2,990 

1,327 

1,100 

793 

689 

682 

484

547 

433 

616 

624 

964 

377 

295

268 

201 

197 

254 

361 

776 

2,292 

3,857

2,015 

406 

371

Specific 

conductance 

(KX10« 

at 25° 

C.)

278 

391 

379 

431 

269

297 

407 

422 

464 

484 

490 

671

486 

588 

471 

418 

299 

616 

-.642

687 

789 

746 

729 

629 

521 

312 

238

227 

390 

513

Silica 

(Si02)

18 

25 

21 

20 

16

22 

25 

26 

27 

22 

20 

25

21 

28 

22 

16 

14 

17 

17

27 

. 26 

23 

21 

20

18 

18

18 

20 

23

Iron 

(Fe)

0.06

.01 

.01 

.04

.05 

.07 

.08 

.08 

.08 

.07 

.06

.08 

.07 

- .07 

.02 

.02 

.02 

.02

.03 

.04 

.04 

.04 

.06

.07 

.03

.04 

.06 

.02

Calcium 

(Ca)

412 

429 

396 

408 

360

333 

398 

398 

406 

432 

414 

478

422 

484 

414 

382 

311 

444 

622

530 

676 

568 

546 

488 

426 

344 

350

338 

409 

498

Magnesium 

(Mg)

63 

103 

101 

120 

60

80 

121 

130 

143 

161 

154 

181

152 

184 

141 

122 

86 

156 

194

220 

,254 

236 

222 

190 

157 

82 

58

67 

116 

169

Sodium 

(Na)

173 

3( 

358 

4* 

197

255 

4 

416 

501 

520 

545 

655

535 

667 

517 

459 

2 

597 

796

867 

992 

v938 

929 

774 

6( 

262 

139

124 

351 

609

Potassium 

(K)

7.6 

56 

7.2 

)9 

6.8

8.0 

5 

8.0 

9.6 

9.6 

8.0 

8.0

8.4 

9.2 

7.6 

6.0

8

6.8

15 

16 

14 

12 

9.6 

)3 

4.0 

4.0

4.4 

4.8 

9.6

Bicarbonate 

(HCO3)

133 

173 

167 

180 

127

146 

186 

198 

197 

207 

212 

235

214 

227 

207 

193 

169 

213 

231

182 

186 

194 

191 

173 

188 

133 

129

137 

163 

122

Sulfate 

(S04)

1,166 

1,279 

1,197 

1,286 

1,034

1,030 

1,276 

1,300 

1,356 

1,437 

1,409 

1,615

1,414 

1,631 

1,381 

1,258 

976 

1,483 

1,807

1,924 

2,117 

2,081 

1,995 

1,783 

1,477 

1,069 

988

936 

1,270 

1,677

C

r

(

l

. 
May 16-20.. ............

May 21-27.. .. .... .

May 28-31.... ..........

June 11, 13... ____ ...

June 14-20_____. _._____..

June 21-26 ............

June 26-30. ..._-_ _-.

July 1-3 

July 4-10..... ...........

July 11-14........ ...... .

July 16-20........ ......

July 21-22...............

July 23-31.... .. .. .

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

Aug. 11-18-. 

Aug. 19-20...... ....

Aug. 21-30... ....... .

Aug. 31. ...... ..........

Sept. 1-7, 9..............

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

Sept. 21-30.. ............

Weighted average.

1,600

1,955

351

301

288

563

224

146

287

388

272

132

284

314

112

100

154

856

873

1,480

4,707

1,429

636

1,071

232

188

310

415

451

272

378

510

614

339

332

530

600

351

551

968

515

297

295

153

295

270

316

343

20

16

18

16

14

16

17

18

17

17

17

19

27

23

25

22

18

17

16

16

17

19

.03

.02

.03

.02

.05

.03

.03

.03

.04

.03

.06

.09

.08

.08

.09

.20

.04

.04

.04

.02

.05

306

277

350

408

408

310

350

422

460

370

328

434

456

' 329

436

496

414

299

312

156

468

422

378

400

59

46

85

123

144

71

110

151

153

92

90

155

184

95

169

197

156

79

95

36

76

70

92

. 93

140

92

260

408

4(

230

375

593

781

297

327

617

716

354

642

1,4

593

286

244

12

175

152

254

297

7.6

5.6

8.4

7.6

2

4.0

4.4

5.2

8.8

4.8

. 7.2

9.6

16

8.0

14

67

13

7.2

7.2

7

6.4

3.2

4.0

6.8

121

116

129

135

112

128

111

114

128

115

128

118

90

109

98

118

113

119

106

142

102

111

139

145

877

759

1,049

1,299

1,342

918

1,159

1,493

1,584

1,184

1,050

1,529

1,672

1,072

1,551

1,765

1,477

970

1,002

%416

1,348

1,193

1,131

1,214

REVISION. The weighted average analysis of the Pecos River near Artesia for the year ended Sept. 30, 1941

shown below. Revised loads of dissolved matter in tons per day for the composite periods may be computed by 

1,378 272 15 0.06 353 64 207 7.3 114 1,027 
PECO8 RIVER ATfCARLHBAD, N. MEX

[Composites of daily samples collected at gaging station at Green Street Bridge in Carlsbad, half a mile upstream fro

in parts per million]

' Date of collection

Oct. 1-10, 1941 

Oct. 11-20 

Oct. 21-31-.. 

Nov. 1-8, 10--- --

Nov. 11-20-. 

Nov. 21-23, 25, 27-30 

Dec. 1-10 

Dec. 11-20 - ---

Dec. 21 29 

Jan. 9-10, 1942... 

Jan. 11-20- 

Jan. 21-27 _ 

Feb. 2-10 

Feb. 11-16, 18-20.... .

Feb. 21-28 - ...

Mar. 1-8, 10 ~

Mar. 11-15, 17-20 - 

Mar. 21-29, 31 

Apr. 1-4, 6-10. - 

Apr. 11-13, 15-16, 18-20 

Apr. 21-26,28, 30 

May 1-8, 10. 

May 11 20. 

May 21-22, 24-25, 29, 31. .

June 16, 18-20.- 

Tiinfl 91 tyA ^S\

July 1-10- -- 

July 11-20 

July 21-31.. -. 

Aug. 1-10 _

Aug. 11-20-- 

Aug. 21-31.- 

Sept. 1-10 

Sept. 11-20- 

Sept. 21-30. _

Weighted averageMean 

discharge 

(secondfeet)

9,448 

2,033 

3,356 

2,047 

704 

803

700 

885 

544 

910 

452 

633

892 

157 

196 

251 

153 

100

103 

102 

1,718 

1,075 

416 

1,409

270 

158 

85.9 

99.7 

102 

129

91.3 

88.5 

91.8 

2,926 

1,170 

652

974

Specific 

conductance 

(KX10« 

at 25° 

C.)

255 

341 

328 

327 

361 

382

390 

417 

406 

469 

417 

453

465 

414 

386 

402 

388 

350

345 

333 

452 

317 

347 

322

349 

364 

371 

331 

340 

340

351 

334 

319 

332 

332 

325

335

Silica 

(SiOj)

14 

19 19' 

19 

23 

25

24 

22 

21

18 

17

18 

17 

16 

22 

21 

21

20 

26 

15 

16 

18 

18

21 

20 

22 

24 

21 

18

16 

15 

23 

14 

13 

15

17

Iron

(Fe)

Calcium 

(Ca)

381 

428 

384 

383 

398 

400

416 

426 

434 

442 

442 

450

448 

422 

428. 

448 

440 

369

368 

340 

426 

383 

. 382 

393

375 

371 

364 

346 

354 

344

349 

344 

323 

461 

486 

439

407

Magnesium 

(Mg)

58 

90 

86 

87 

114 

118

122 

130 

, 128 

152 

130 

' 143

147 

141 

128 

123 

117 

112

112 

110 

145 

92 

111 

95

109 

119 

132 

114 

114 

118

124 

111 

112 

93 

91 

92

94

Sodium 

(Na)

Potassium 

(K)

168 

279 

288 

285 

323 

355 '

366 

407 ' 

384 

484 

399 

463

474 

370 

342 

374 

351 

311

315 

306 

475 

267 

323 

288

306 

330 

331 

290 

310 

305

321 

256 

272 

252 

239 

247

283

Bicarbonate 

(HO 03)

129 

149 

136 

131 

165 

138

151 

177 

180 

193 

182 

187

176 

191 

188 

136 

148 162*

192 

133 

140

157 

66 

87

80 

73 

115 

124 

154 

119

116 

134 

113 

119 

134 

135

138

Sulfate 

(800

1,088 

1,271 

1,174 

1,185 

1,272 

1,314

1,366 

1,391 

1,406 

1,481 

1,449 

1,506

1,496 

1,356 

1,365 

1.481 

£419 

1,215

1,193 

1,159 

1,485 

1,202 

1,332 

1,259

1,266 

1,299 

1,289 

1,185 

1,200 

1,203

1,233 

1,090 

1,111 

1,417 

1,455 

1,337

1,262

C
PECOS RIVER NBAK MALAGA, N. MB

Biver. Drainage area, 19,190 square miles. Analyses in parts 

Date of collection

Oct. 1-10, 1941 

Oct. 11-20.. .............

Oct. 21-31 

Nov. 1-10. ........

Nov. 11-20-- 

Nov. 21-30- vDec 1-10

Dec. 11-20 ..... .. 

Dec. 21-31... . ..

Jan. 1-10, 1942.. ........ .

Jan. 11-20. .

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

Feb. 1-10 

Feb. 11-20 . __ ..

Feb. 21-28 _

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

Mar. 11-20..............

Mar. 21-31..... ..;..

Apr. 1-10 __ . _ . _ .

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

Apr. 21-30... _ . _

-May 1-10. . ___ . __ .

May 11-20... ... 

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

July 1-10 __ . .......

July 11-20... ...

July 21-31-, .,. .,.,

Mean 

discharge 

(secondfeet)

10,400 

2,044 

3,631 

2,208 

874 

932

831 

989 

662 

965 

636 

626

1,052 

281 

284 

374 

269 

162

163 

136 

1,791 

1,295 

398 

1,568

915 

217 

135 

193 

176 

165

Specific 

conductance 

(KXW 

at 25°

c.)

259 

358 

345 

349 

409 

433

424 

433 

446 

446 

484 

460

488 

508 

493 

456 

473 

522

522 

546 

524 

395 

449 

342

456 

494 

547 

547 

529 

529

Silica 

(SiOj)

20 

19 

18 

16 

20 

18

19 

20 

18 

16 

16 

16

13 

15 

15 

18 

19 

18

19 

20 

19 

14 

20 

16

21 

19 

24 

22 

20 

14

Iron 

(Fe)

Calcium 

(Ca)

378 

434 

396 

394 

440 

442

448 

442 

450 

460 

450 

462

458 

472 

474 

486 

482 

506

476 

466 

464 

426 

448 

402

440 

504 

472 

468 

460 

468

Magnesium 

(Mg)

61 

95 

91 

90 

120 

128

128 

134 

140 

141 

152 

143

149 

161 

157 

140 

147 

160

166 

169 

156 

104 

146 

100

140 

153 

172 

182 

169 

177

Sodium

.(Na)

Potassium 

(K)

1(4 

317 

303 

323 

397 

434

401 

422 

443 

445 

518 

471

539 

566 

522 

448 

- 467 

552

564 

632 

599 

392 

444 

296

471 

507 

598 

584 

576 

555

Bicarbonate 

(HC03)

134 

164 

126 

151 

170 

182

180 

178 

186 

188 

203 

197

182 

196 

202 

175 

162 

159

169 

137 

154 

149 

106 

111

118 

137 

90 

114 

122 

84

Sulfate 

(BOO

1,077 

1,320 

1,212 

1,215 

1,388 

1,426

1,427 

1,435 

1,473 

1,519 

1,516 

1,531

1,582 

1,620 

1,593 

1,585 

1,600 

1,699

1,654 

1,672 

1,630 

1,366 

1,526 

1,278

1,490 

1,651 

1,684 

1,689 

1,656 

1,631

C
FEC6& RfVEit NEAk MALAGA, N. MEX.-Co

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

Aug. 11-20... _____ -

Aug. 21-31.... _ 

Sept. 1-10 __

Sept. 11-20.- _

Sept. 21-30 

Weighted average.

152 

192 

171 

2,969 

1,385 

798

1,098

532 

536 

542 

372 

358 

384

370

13 

17 

20 

13 

14 

14

18

460 

472 

482 

452 

516 

488

425

176 

177 

183 

112 

. 105 

114

105

582 

587 

592 

292 

267 

303

332

86 

105 

126 

127 

122 

142

144

1,656 

1,691 

1,697 

1,391 

1,529 

1,468

1,328

REVISION. The weighted average analysis of the Pecos River near Malaga for the year ended September 30, 1

as shown below. Revised loads of dissolved matter in tons per day for the composite periods may be computed by 

Weighted average. 1,652 242 15 0.06 285 64 191 7.5 111 856 

PECOS RIVER AT RED BLUET, N. MEX

[Composites of daily samples collected at pipe line bridge, 2J^ miles below Red Bluff gaging station, which is locate

from Delaware River. Drainage area, 19,540 square miles. Analyse

Date of collection

Oct. 1-10, 1941... . ,--

Oct. 11-20 

Oct. 21-23 _ 

Oct. 24-31. 

Nov. 1-10. 

Nov. 11-13 

Nov. 14-19.. _

Nov. 21-26, 29-30 

Nov. 27-28 

Mean 

discharge 

(secondfeet)

10,050 

2,154 

1,730 

4,462 

2,279 

1,393 

553 

 Ijl76 

293

Specific 

conduct 

ance 

(KX105 

at 25° 

C.)

263 

394 

424 

342 

409 

432 

716 

504 

865

Silica 

(Si02)

16 

21 

22 

18 

16 

20 

20 

19 

21

Iron 

(Fe)

0.01 

.04

.03 

.03

.05 

.04

Calcium 

(Ca)

382 

431 

428 

378 

402 

416 

450 

436 

466

Magnesium 

(Mg)

63 

97 

111 

90 

106 

114 

138 

135 

155

Sodium 

(Na)

178 

393 

44 

304 

414 4' 

1,046 

586 

1,385

Potassium 

(K)

ao

16 

4 

9.6 

17 

2 

26 

18 

31

Bicarbonate 

(HCOs)

132 

152 

153 

131 

149 

163 

177 

166 

196

Sulfate 

(S04)

1,121 

1,319 

1,363 

1,161 

1,236 

1.342 

1,516 

1,457 

L618

C

r

(

1

2
Dec. 1-10 

Dec. 11-20 -, 

Dec. 21-31 

Jan. 1-10, 1942... ___ 

Jan. 11-13. 

Jan. 14-20. ___ 

Jan. 21-28 . 

Jan. 29-31. . 

Feb. 1-10 ... 

Feb. 11-20 

Feb. 21-28.. _ ... . __ .

Mar. 1-10. ... J..~ ...

Mar. 11-20 ...... ....

Mar. 21-31 

Apr. 1-10-. .. 

Apr. 11-20 

Apr. 21-24 - _ .......

Apr. 25-30 

May 1-6 

May 7-10- _ ... .... 

May 11-19..- 

May 21-31. ____ - _ .

July 1-10 - _

July 11-20. 

July 21-31 

Aug. 1-10- __ 

Aug. 11-20 

Aug. 21-31 ... . 

Sept. 1-2... ... ....

Sept. 3-10. 

Sept. 11-20 _ .

Sept. 21-30. _ ..........

Weighted average.

5U1

984

632

851

1,281

4(11

422

1,083

990

293

266

405

310

181

185

164

176

2,707

2,226

298

314

1,330

1,561

292

242

887

377

213

147

186

177

168

147

182

171

264

3,544

1,518

854

1,102

515

405

562

529

493

685

670

458

556

737

766

604

658

852

eyfto

895

OKft

579

386

595

669

458

364

516

711

536

476

705

800

833

744

784

770

768

716

352

385

459

423

21

10

21

23

22

25

21

16

15

17

22

20

19

17

20

18

20

' 17

18

 20

18

16

17

14

23

18

24

23

27

24

22

26

14

18

19

18

.04

.04

.06

.08

.08

.08

.02

.03

.03

04

.03

.04

04

04

04

.04

.03

.03

.04

04

04

.04

04

.04

.02

.03

.12

.07

.09

.02

.05

.03

.02

.04

.03

442

442

xjto

464

448

4K9

470

456

486

486

474

480

514

500

4fi9

404

476

410

440

466

468

414

422

466

474

428

514

504

492

484

476

470

490

472

432

418

514

476

424

I4n

147

144

14ft

162

159

132

150

172

172

143

161

183

190

1O4

205

165

107

127

164

14O

106

119

14O

166

14O

158

186

ISO

190

190

188

195

183

103

104

118

109

611

564

700

51

902

4(

678

i nan

1,109

771

852

1,250

1,347

1,332

1,462

669

770

914

4^

322

636

1,036

5

524

Q7ft

1,171

1,229

1,002

1,098

1,076

1,163

1,067

963

287

309

478

443

14

11

14

12

>1

17

10

56

9.6

lo

20

20

22

29

Ol

26

30

10

6.8

15

13

21

3.2

7.6

O 9

77

6.0

9.6

13

18

26

26

22

91

21

.22

6.4

10

16

11

174

174

183

180

186

169

179

191

199

136

120

136

140

137

135

144

111

138

114

130

142

141

135

130

132

134

124

114

132

133

124

124

97

121

141

140

1. 4A«

1,470

1,524

1 544

1,514

1,607

1,598

1,531

1,585

1,704

1,704

1,633

1,653

1,796

1 794

1,770

1,830

1,656

1,317

1,455

1,635

1,521

1,305

1,358

1,593

1,446

1,737

1,804

1,822

1,745

1,774

1,733

1 7Sfl

1,756

1,618

1,355

1,590

1,513

1,356
PECOS RIVER NEAR ORLA, TEX.

[Composites of daily samples collected at gaging station about 600 feet upstream from Pasotex pipe line crossing, 

bean) Draw, and 19 miles downstream from Red Bluff Dam. Drainage area, 21,300 squar

Date of collection

Nov. 1-10, 1941..........

Nov. 11-15. ...... ... ....

Nov. 16-20- ..........

Dec. 1-10 . ............

Dec. 11-20. ...........

Dec. 21-31- __ _ ...

Jan. 1-10, 1942..... __ .

Jan. 11-20........... ...

Jan. 21-31 _ .. __ .

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

Feb. 11-19.....:.. ....

Feb. 20-27 ............

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

Mar. 3-10... __ 

Mar. 11-20.. ...........

Mar. 21-31- 

Apr. 1-10 --- _ . ...

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

Apr. 21-30 __

Mayl-10. ...

May 11-20- ... - _ 

May 21-31 ...

June 11-20 ._ _._._

July 1-10 ..... .

July 11-20- _____ . 

July 21-31 ............

Aug. 1- 10. .. __ 

Aug. 11-20 __ ..........

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

Sept. 1-10 ... ...

Sept. 11-20 

Sept. 21-30- _

Weighted average >__

Mean 

discharge 

(secondfeet)

2,717 

1,488 

538 

691 

776 

888 

850

667 

922 

561 

879 

724 

241 

30

74.5 

281 

279 

308 

335 

552 

915

1,112 

412 

1,530 

238 

230 

454

536 

537 

657 

697 

488 

201

817 

841 

386

1,115

Specific 

conductance 

(KX105 

at 25° 

C.)

328 

364 

590 

453 

463 445' 

455

502 

456 

515 

493 

517 

675 

1,031

1,035 

570 

570 

566 

547 

520 

490

485 

542 

467 

536 

540 

492

473 

485 

488 

490 

505 

600

570 

542 

505

375

Silica 

(SIOj)

23 

29 

31 

18 

18 

20 

17

24 

20 

26 

19 

16 

15 

26

18 

19 

19 

. 16

26 

-. 26 

24

29 

28 

23 

27 

16 

13

20 

14 

16 

 15 

16 

'15

31

24 

24

20

Iron 

(Fe)

0.06

.05 

.06 

.10 

.06 

.12

.07 

.06 

.06 

.06 

.05 

.06

.05 

.04 

.05 

.05 

.07 

.05

.03 

.16 

.08 

.13 

.07 

.03

.05 

.03 

.04 

.06 

.05 

.07

.04 

.10 

.06

 ,05

Calcium 

(Ca)

391 

399 

488 

428 

418 

404 

440

452 

436 

452

448 

456 

520 

672

664 

476 

474 

486 

472 

456 

458

452 

480 

456 

472 

480 

487

428 

458 

456 

458 

466 

494

'492 

480 

472

396

Magnesium 

(Mg)

80 

90 

149 

110 

121 

118 

117

138 

126 

145 

134 

139 

177 

267

266 

149 

144 

142 

142 

126 

126

129 

146 

124 

146 

144 

131

126 

128 

126 

124 

127 

145

149 

144 

140

96

Sodium 

(Na)

285 

343 

696 

500 

519 

494 

485

573 

474 

609 

537 

570 

821 

M1,' 

689 

697 

703 

629 

596 

527

( 532 

623 

500 

629 

615 

524

533

541 

549 

554 

590 

752

634

614 

566

370

Potassium 

(K)

9.6 

 12 

15 

14 

13 

13 

12

26 

20 

19 

15 

15 

19 

59

16 

19 

19 

21 

20 

21 

19

12 

13 

12 

13 

15 

13

16 

14 

13 

14 

15 

18

12 

14 

14

12

Bicarbonate 

(HC03>

111 

93 

116 

106 

144 

142. 

160

168 

150 

156 

166 

169 

185 

230

172 

160 

160 

161 

128 

146 

143

120 

118 

120 

96 

127 

138

93 

132 

127 

130 

134 

137

122 

124 

122

129

Sutfate 

(800

1,174 

1,230 

1,536 

1,340 

1,340 

1,325 

1,361

1,445 

1,373 

1,481 

1,424 

1,447 

1,666 

2,176

2,254 

1,562 

1,562 

1,577 

1,537 

1,473 

1,454

1,465 

1,570 

1,465 

1,616 

1,602 

1,539

1,463 

1,481 

1,493 

1,490 

1,523 

1,628

1,597 

1,602 

1,580

1,230

C

2

Includes estimated analysis for October.
(Composites of daily samples collected at $ 

and about 101

PECO8 RIVER BELOW GRANDFAJLLS, 

.g station at bridge on county road between Grandfalls and Imperia

i downstream from-Chacatori Draw. Drainage area, 27,820 square 

Date of collection

Oct. 1-10. 1941 . -

Oct 11-20

Oct. 21-31 

Nov. 1-10- 

Nov. 11-20.- 

Nov. 21-30. 

Dec. 1-10 

Dec. 11-20 

Jan. 1-10, 1942 

Jan. 11-20 

Feb. 1-10 

Feb. 11-19. 

Feb. 20-28 

Mar. 1-5, 7-10 

Mar. 11-20. 

Mar. 21-31-. .

Apr. 1-10 .

Apr. 11-20. 

Apr. 21-30 

May 1-8, 10 _

May 11-13- 

May 21-23. _- .

"IWatr 94 ^1

June 1-10.. __ .... _ ..

June 21-25, 27-30 . . 

Weighted average _ 

*

Mean 

discharge 

(secondfeet)

12,390 

8,810 

2,840 

4,260 

2,030 

821

873 

917 

956 

766 

985 

737

804 

879 

526 

237 

248 

141

66.2 

50.5 

118 

656 

571 

128 

105 

808

366 

93.7

75.4

1,535

Specific 

conductance 

(KX10» 

at 25° 

0.)

319 

326 

488 

392 

507 

878

693 

642 

608 

685 

584 

744

686 

629 

- 878 

1,345 

1,017 

1,190

1,424 

1,417 

1,270 

539 

579 

984 

1,139 

535

754 

1,151 

1,328

462

Silica 

(SiOs)

24 

24 

31

25 

15 

20

24 

17 

12 

19 

26 

24

21 

20 

25 

26 

24 

25

40 

38 

37 

33 

35 

42 

39 

28

27 

56 

48

24

Iron 

(Fe)

0.08 

.05 

.05 

.06 

.04 

.07

.11 

.10 

.28 

.07 

.07 

.06

.07 

.06 

.05 

.03 

.06 

.20

.05 

.05 

.05 

.08

.04

.03

.04 

.05 

.03

.07

Calcium 

(Ca)

366 

380 

424 

416

464 

592

512 

498 

494 

506 

468 

536

512 

492 

582 

694 

616 

669

718 

744 

690 

496 

506 

632 

668 

482

552 

674 

714

429

Magnesium 

(Mg)

71 

75 

113 

93 

124 

224

169 

162 

156 

185 

154 

202

176 

162 

219 

334 

251 

293

361 

357 

316 

137 

145 

248 

284 

138

192 

285 

326

111

Sodium 

(Na)

294 

291 

559 

384 

541 

1,220

910 

823 

755 

891 

725 

968

892 

793 

1,261 

2,142 

1,504 

1,826

2,259 

2,242 

1,937 

618 

6' 

1,412 

1,7 

620

1,009 

1,707 

2,088

519

Potassium 

(K)

13 

10 

14 

12 

13 

22

17 

15 

12 

23 

26 

23

18 

18 

18 

27 

25 

27

27 

30 

31 

11 

11 

18 

11 

11

14 

20 

20

14

Bicarbonate 

(HC03)

136 

128 

139 

128 

152 

201

163 

168 

177 

158 

159 

172

176 

176 

204 

181 

187 

226

160 

203 

195 

128 

151 

' 157 

161 

 139

121 

154 

166

143

Sulfate 

(S04)

1,073 

1,122 

1,319 

1,265 

1,412 

1,987

1,681 

1,613 

1,584 

1,707 

1,561 

1,789

1,715 

1,612 

1,998 

2,650

2,810 

2,830 

2,590 

1,587 

1,633 

2f265 

2,468 

1,585

1,957 

2,550 

2,770

1,335
CARLSBAD PROJECT MAIN CANAL AT AVALON DAM, NE

[Composites of daily samples collected at head of Carlsbad project main canal at Avalon Dam, 5 mfles 

Date of collection

Oct. 21-27, 1941.... .

Nov. 12-17- 

Feb. 2-10, 1942-.. .....

Feb. 11-18, 20. 

Feb. 21-22, 25. ...

Mar. 15-20........... .

Mar. 21-31... .........

Apr. 1-3, 5-10- 

Apr. 11-20 

Apr. 21-29.............

Apr. 30.. __ ..........

May 1-10 __

May 11-20.. .

May 21-31- .... .

June 13-20. __ ....

June 21-30-. ___ . ...

Julyl-10 ....... ...

July 11-13, 15-20-. 

July 21-31. .. .

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

Aug. 11-20-... ... _ ..

Aug. 21-30............

Sept. 3-10...... 

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

Sept. 21-25, 27-30- 

Mean 

discharge 

(secondfeet)

Specific 

conductance 

(KX10» 

at25°C.)

350 

366 

483 

473 

451

431 

433 

488 

546 

510 

343

327 

361 

313 

378 

453 

434

418 

436 

431 

414 

429 

438

327 

333 

339

Silica 

(SiOj)

20 

22 

16 

17 

16

17 

16 

15 

14 

15

13 

18 

12 

17 

16 

16

17 

15 

28 

18 

15 

15

14 

14 

18

Iron 

(Fe)

Calcium 

(Ca)

400 

434 

458 

470 

496

524 

544 

542 

518 

484

410 

454 

390 

456 

514 

51Q

480 

506 

505 

459 

481 

522

474 

506 

479

Magnesium 

(Mg)

93

105 

154 

150 

139

124 

125 

142 

163 

158

88 

120 

95 

115 

136 

131

124 

131 

129 

123 

123 

132

84 

84 

93

Sodium 

(Na)

Potassium 

(K)

322 

317 

510 

474 

424

380 

369 

477 

601 

547

264 

334 

235 

313 

400 

361

358 

372 

395 

388 

396 

387

240 

235 

239

Bicarbonate 

(HCOs)

154 

142 

172 

168 

156

120 

121 

139 

130 

136

143 

80 

113 

86 

109 

113

106

100 

102 

103 

98

118 

119 

124

Sulfate 

(S0«)

1,220 

1,360 

1,564 

1,561 

1,598

1,672 

1,694 

1,738 

1,784 

1.661

1,264 

1, 42t. 

1,195 

1,452 

1,644 

1,585

1,508 

1,679 

1,625 

1,500 

1,551 

1,695

1,435 

1,513 

1,435

C

r
COLORADO RIVER BASIN

CCHLORADO RIVER NEAR GUENWOOD SPRIN

[Composites of daily samples collected at Shoshone power plant, 6 miles upstream from gaging station, which is at O

age area, approximately 4,560 square miles. Analyses in par

Date of collection

Oct. 1-10, 1941.. __ .............

Oct. 11-20 . .

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

Nov. 1-10 

Nov. 11-20- _ ..... _ ...... __ .

Nov. 21-30 

Dec. 2, 5-6, 8, 15, 22, 24-25, 28... 

Jan. 1-10. 1942 

Jan. 11-20 

Jan. 21-31 ... . 

Feb. 1-10--. - __

Feb. 11-19-. .... ..

Feb. 20-28- 

Mar. 1-10 _ . _ 

Mar. 11-20 

Mar. 21-31 

Apr. 1-10... ... 

Apr. 11-20- _ __ .......

Apr. 21-30- __ . __ . 

May 1-10 

May 11-20 

May 21-31 

June 11-20 

June 21-30 

TnVw i in

July 11-20 ............ ..... .,

July 21-31... 

Aug. 1-10- . . 

Aug 11-20

Aug. 21-31 

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

Sept. 11-20 ______ . ..

gept. 21-30...... ...............

Mean 

discharge 

(secondfeet)

1,178 

1,379 

1,253 

1,126 

1,094 

770 

780

623 

700 

749 

770 

693 

726

746 

758 

760 

1,858 

3,488 

3,052

3,109 

4, 670 

10,760 

14,140 

13,270 

8,967

5,293 

3,690 

2,356 

1,693 

1,219 

950

702 

780 

843

2,688

Specific 

conductance 

(KX10* 

at 

25° C.)

73.7 

68.5 

69.4 

72.4 

73.1 

90.4 

85.2

100 

91.7 

91.0 

88.4 

91.2 

89.8

86.4 

83.9 

85.9 

69.4 

46.0 

40.9

41.1 

31.1 

25.0 

17.1 

17.8 

20.0 27. l' 

34.7 

46.8 

56.7 

67.5 

78.3

92.9

95.0 

92.9

38.8

Silica 

(Si02)

12 - 

13 

12 

12 

12 

12 

13

15 

15 

17 

14 

14 

14

15 

15 

14 

13 

13 

14

13 

13 

12 

11 

8.6 

7.6

9.0 

9.0 

10 

10 

9.2 

8.4

13 11 - 

11

11

Iron 

(Fe)

0.01 

.01 

.01 

.01 

.01 

.01 

.02

.02 

.02 

.02 

.02 

.02 

.02

.04 

.04 

.04 

.04 

.08 

.08

.09 

.07 

.19 

.15 

.10 

.08

.06 

.08 

.06 

.02 

.06 

.06

.06 

.08 

.09

.09

Calcium 

(Ca)

67 

63 

62 

63 

64 

73 

67

73 

67 

67 

64 

65 

64

65 

65 

68 

81 

59 

43

42 

36 

33 

22 

22 

22

28 

35 

44 

50 

58 

66

76 

83 

80

39

Magne-- 

sium 

(Mg)

15 

15 

14 

15 

15 

17 

16

17 

16 

15 

15 

15 

15

14 

14 

16

14 

9.2 

9.5

9.8 

7.4 

5.6 

4.1 

4.3 

4.6

6.4 

8.1 

10 

11 

12 

14

18 

19 

19

8.1

Sodium 

(Na)

62 

56 

59 

63 

64 

86 

83

107 

95 

94 

95 

97 

95

88 

81 

86

41 

24 

27

27 

16 

11 

6.2 

8.3 

11

17 

24 

36 

48 

62 

75

01 

88 

86

28

Potassium 

(K)

2.5 

2.2 

2.4 

2.2 

2.2 

2.6 

2.2

4.2 

3.8 

3.4 

3.0 

2.6 

3.4

4.2 

3.2 

4.2

4.9 

3.6 

2.5

2.0 

2.0 

2.0 

1.3 

1.2 

1.3

1.5 

1.4 

1.5 

2.1 

1.9 

2.6

2.4 

5.0 

4.8

2,0

Bicarbonate 

(HCOs)

136 

133 

132 

136 

135 

153 

146

157 

147 

147 

141 

143 

142

139 

136 

143

143 

134 

114

115 

106 

102 

69 

67 

63

73 

88 

106 

115 

127 

136

147 

161 

159

98

Sulfate 

(SOO

122 

114 

111 

116 

115 

135 

121

132 

118 

117 

115 

113 

112

112 

119

128

148 

84 

62

61 

39 

28 

-19 

23 

27

37 

54 

74 

88 

101 

119

149 

165 

167

Ch

ri

(C

8

7

8

8

9

12

12

15

14

14

13

14

14

13

12

126

h 5

27 

34

34 

20 

13 

6

8

14

24 

30 

49 

64 

88 

10

130 

127 

123

« 1 38
COLORADO RIVER AT BRIGHT ANGEL CREEK, NEAR G

[Composites of daily samples collected at gaging station at Kaibab Bridge, a quarter of a mile upstream from Bright A

and 267 miles upstream from Boulder Dam. Drainage area, 137,800 square miles. 

Date of collection

Oct. 1-8, 10, 1941... _ ..

Oct. 12-20... .........

Oct. 21-22, 25-27, 30-31. .. 

Nov. 1-4, 6-10, 12, 14...-

Dec. 2-6, 8-10 .... .. 

Dec. 11-13,15-20 _ 

Dec. 22-24, 26-27, 29-31 

Jan. 1-3, 6-7, 10, 1942. ....

Tan. 11-17, 19-20 ...

Jan. 21-24, 26, 28-31. .....

Feb. 1-2, 4-7, 9-10 . _ .

Feb. 11-14, 16-19 -,

Feb. 20-22, 24-28 

Mar. 1-2, 4-7, 9-10. ......

Mar. 12-14, 17-20 

Mar. 21-23,25-31.. ...

Apr. 1, 3-10 __ . .....

Apr. 11, 13-20 .- __ 

ADT. 21-30 ... _ .

-May 1-5, 7-10... __ .

May 11-20--. ....

May 21-30. .............

June 11-16, 18-20 . 

June 21-30.. ______

Julyl-10^ _ ..... __ .

July 11-20... .......

July 21-31. _______ ..

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

Ang. 11-20. ...... 

Aug. 21-31.... _ .. __ .

Sept. 1-2, 4-10. _

Sept. 11-20. 

Sept. 21-30.., 

Weighted average.. ...

Mean 

discharge 

(secondfeet)

23,850 

36, 740 

32,170 

17,900

11,280 

9,742 

9,023 

6,737

6, 032 

8,884 

8,469 

9,054 

5,910

7,443 

11,600 

12, 630 

28,030 

54,530 

56,760

40,240 

51,490 

61,580 

82,240 

76,580 

55, 010

29,030 

20,400 

16,700 

10,160 

7,933 

5,826

4,777 

4,854 

5,174

23,840

Temperature 

(°F.)

60 

59 

56 

51

41 

42 

38 

35

37 

39 

42 

40 

39

44 

47 

49 

56 

59 

56

57 

59 

65 

65 

69 

70

75 

78 

79 

79 

78 

76

73 

70 

67

......

Specific 

conductance 

(KX10' 

at 25° C.)

123 

134 

111

107

133 

136 

141 

150

173 

153 

147 

148 

153

157 

144 

124 

107 

64.9 

52.5

64.4 

56.2 

50.9 

38.6 

35.9 

40.1

55.3 

69.7 

90.3 

107 

132 

155

162 

173 

191

79.9

Silica 

(SiOj)

16 

14 

14 

12

13 

13 

13 

12

13 

15 

13 

12 

9.6

10 

12

8.8 

8.4 

8.2 

9.8

11 

17 

16 

15 

13 

13

14 

14 

14 

16 

12 

13

13 

16 

13

13

Iron 

(Fe)

0.18 

.08 

.03 

.03

.02 

.06 

.08 

.04

.04 

.04 

.04 

.04 

.16

.16 

.28 

.20 

.33 

.08 

.12

.08 

.04 

.04 

.04 

.04 

.04

.08 

.22 

.08 

.09 

.08 

.08

.12 

.14 

.16

.07

Calcium 

(Ca)

102 

132 

119 

97

102 

100 

101 

109

120 

114 

110 

107 

111

115 

113 

97 

88 

60 

55

60 

49 

45 

38 

34 

37

45 

54 

69 

78 

94 

103

104 

108 

126

69

Magnesium 

(Mg)

26 

32 

26 

29

40 

41 

43

48

53 

48 

46 

46 

46

48 

42 

37 

30 

19 

17

20 

19 

17 

12 

11 

12

16 

19 

26 

30 

38 

46

54 

58 

63

23.

Sodlum 

(Na)

134 

119 

90 

93

132 

138 

146 

145

178 

148 

142 

150 

158

161 

144 

125 

99 

51 

31

47 

41 

35 

23 

22 

24

45 

64 

85 

108 

142 

173

183 

207 

222

69

Potassium 

(K)

5.8 

6.0 

4.8 

4.2

4.2 

4.2 

4.5 

11

12 

11 

8.3 

7.0 

9.9

9.6 

8.7 

7.4 

6.7 

5.1 

5.1

5.4 

5.4 

5.0 

4.3

4.8 

4.8

2.2

2.7 

3.6 

5.6 

6.0

8.0

8.8 

8.8 

11

5.3

Bicarbonate 

(HCOs)

211 

194 

204 

195

218 

220 

224 

234

259 

245 

232 

231 

237

240 

, 238 

208 

188 

151 

146

162 

154 

139 

121 

102 

102

123 

139 

152 

179 

195 

174

188 

199 

196

160

Sul* 

fate 

(S0<)

371 

472 

360 

313

369 

373 

386

398

440 

402 

392 

391 

397

411 

392 

349 

294 

168 

122

157 

126 

111

71 

72 

85

121 

163 

242 

278 

370 

'459

477 

535 

635

212

Chl

rid

(C

6

5

4

5

10

11

12

13

18

13

13

13

14

15

12

9

7

3

2

3

2

2

1

1

1

3

5

6

9

11

14

16

17

17

5
COLORADO RIVER BELOW BOULDER DAM, A

[Composites of daily samples collected at gaging station, 1 mile downstream from Boulder Dam. Drainage 

Date of collection

Oct. 1-3, 5-7, 9-10, 1941. . 

Oct. 11, 13+18, 20.- --

Oct. 21-24, ; 26-31 - -

Nov. 1,3-8,10 . 

Nov. 11-13, 16-20-. -

Nov. 21, 23-27, 29, 30.... 

Dec. 1-10 

Dee. 11-12,14-19-- 

Dec. 21-24, 26-27, 29. 31- 

Jan. 2,4-10,1942 .

Jan. 11-14, 16-20 ...

Jan. 21-24, 27-30 -

Feb. 2-3, 5-7, 9-10 

Feb. 11-19 ..........

Feb. 20-21, 23-28. ...--

Mar. 2-3, 6-7, 9-10 . ._

Mar. 12-14, 16-20 

Mar. 23-31. --

Apr. 1-4, <MO._ - 

Apr. 11, 13-14, 16-18, 20- 

Apr. 21, 23^25, 28-30 

May 1-2/4-5, 7-8 

May 11-rie, 18-20 

May 21-23, 25-27, 29-30-

June 11-12, 15, 19-20 . 

June 22-23, 2&-27, 29 .. 

July 1-4, 6-10 - - 

July 11. 13-18,20.. ...

July 21-25, 27-31 . 

Aug. 1-5, 7-8, JLO 

Aug. 11-15, IT-20 _ .

Aug. 21-22, 24-29, 31 

Sept. 11-12, 14-16, 18-19- 

Sept. 21-22, 25-26, 28-30-

Weighted average. ....

Mean 

discharge 

(secondfeet)

25, 560 

25,440 

28,830 

27,800 

29,760 

34,030

34, 390 

34,390 

32, 370 

30, 740 

31, 770 

35, 330

32,760 

28,570 

21,860 

25,280 

25,390 

19,260

15,800 

24,620 

25,180 

24,850 

21, 170 

19, 730

26,550 

25,400 

26,750 

26,490 

22,490 

14,380

13,090 

14,260 

13, 930 

14,320 

15, 940 

21,410

24,960

Temperature 

(°F.)

65 

64 

64 

64 

63 

61

61 

60 

.69 

57 

57 

57

56 

56 

55 

55 

55 

55

55 

55 

55 

56 

56 

57

58 

58 

59

59 

59 

59 

56 

60 

61

Specific 

conductance 

(EX10« 

at 25° C.)

105 

106 

104 

104 

103 

104

104 

106 

105 

108 

109 

109

109 

109 

109 

109 

109 

109

109 

109 

110 

110 

111 

111

111 

111 

111 

109 

109 

109

109 

108 

1Q9 

107 

107 

106

108

Siljca 

(SiO»)

12 

12 

11 

13 

12 

12

8

10 

9.6 

10 

10

16 "14 

14 

13 

13 

13

- 14 

13 

13 

12 

16 

13

12 

13 

12 

12 

12 

13

14 

14

14 

12 

14 

10

12

Iron 

(Fe)

0.04 

.04 

.04 

.02 

.02 

.02

.02 

.02 

.08 

.08 

.08 

.08

.08 

.08 

.08 

.08 

.08 

.04

.04 

.04 

.04 

.08 

.02 

.04

.04 

.04 

.08 

.01 

.01 

.01

.06 

.01 

.01 

.06 

.04 

.05

,05

Calcium 

(Ca)

98 

100 

100 

99 

98 

98

98 

100 

105 

105 

106 

108

104 

104 

104 

103 

104 

104

104 

104 

104 

103 

103 

105

105 

104 

105 

102 

102 

102

102 

102 

101 

103 

102 

101

103

Magnesium 

(Mg)

24 

25 

24 

24 

25 

24

24 

25 

26 

27 

28 

27

27 

27 

27 

27 

27 

27

28 

28 

28 

28 

27 

28

27 

28 

28 

27 

27 

27

28 

27 

27 

28

27

So* 

dium

(Na)

89 

91 

85 

89 

88 

89

90 

91 

86 

89 

93 

91

9 

9 

9 

10 

9 

10

9 

9 

9 

9 

98 

95

95 

97 

92 

10 

10 

9

9 

9

e 

I

9

Potassium 

<*)

6.1 

6.4 

7.0 

5.4 

5.4 

5.3

4.8 

4.5 

8.0 

9.0 

8.0 

8.7

7 

8 

8 

0 

9 

0

7 

9 

8 

9 ., 

4.8 

8.7

9.0 

8.7 

8.7 

0 

0 

9

9 

9 

8 

5

98

Blear* 

bonate 

(HCOa)

147 

148 

146 

150 

146 

147

148 

151 

149 

153 

154 

156

157 

157 

159 

159 

160 

159

161 

161 

162 

162 

162 

162

162 

161 

161 

156 

159 

157

161 

160 

157 

160 

161 

161

156

SuU 

fate 

(S04)

315 

321 

314 

315 

312 

312

315 

320 

322 

335 

343 

337

332 

335 

333 

335 

335 

335

333 

335 

333 

332 

331 

338

335 

340 

334 

335 

334 

333

335 

332 

331 

333 

331 

326

329

Ohio

ride 

(01)

" 68 

70 

68 

67 

67 

67

67 

68 

69 

72 

73 

74

74 

73 

74 

74 

74 

76

74 

75 

75 

75 

73 

75

75 

75 

75 

72 

72 

72

72 

72 

70 

70 

70 

68

72
SAN JUAN RIVER AT SHtPROCK, N. ME

[Composites of daily samples collected at highway bridge approximately 3 miles above gaging station and abo

approximately 12,800 square miles. Analyses in parts per m

. Date of collection

Oct. 1-3, 6-10, 1941........... .....

Got. 11, 13-14, 17-18, 20 -i ^

Oct. 21-26, 28-31. 

Nov. 1-10 ....... .. .. 

Nov. 12-17 

Nov. 21, 23-29....... .... ___ .

Dec. 3-7, 10 

Dec. 11, 13, 16-17, ft.. ......... 

Dec. 21-24, 26, 28-31...... ......

Jan. 1-6, 8-10, 1942...... _ ...

Jan. 12-19 .... .........

Jan. 21-23, 27-30... ...

Feb. 2-10......... 

Feb. 12-19..- _ ........

Feb. 20, 23-28 

Mar. 1-10 .......... _ _ Mar. 12-14, 17-18...... _ .........

Mar. 21, 23-25, 28-30 

Apr. 1-2, 4-5, 7, 9 _ ...

Apr. 11-14, 16-18, 20 _ .......

Apr. 21-23, 26-30 

May 1-2, 4-8. 

May 12, 15-16, 18, 20.. 

May 21-29........ ................

June 1-6, 8..- _ _ .....

June 13, 16-19 _ .....

June 22-24. 26-27. 29 . ____ ...

Mean 

discharge 

(secondfeet)

5,306 

10,540 

9,186 

3,924 

2,554 

1,959

1,646 

1,541 

1,176

887 

1,081 

1,216 

1,271 

1,013 

983

1,102 

1,849 

2,094 

7,572 

10,040 

9,975

5,897 

6,795 

10,080 

10, 310 

10,040 

6.837

Specific 

conductance 

(KX10» 

at 

25° C.)

46.3 

49.9 

49.9 

45.7 

55.1 

60.9

63.0 

64.3 

68.4

80.7 

68.8 

74.4 

73.3 

76.3 

79.1

85.8 

79.3 

77.4 

57.4 

42.0 

43.5

48.1 

34.0 

27.0 

23.5 

21.6 

23.6

Silica 

(SiO»)

11

11 

11 

12 

10 

11 

11

13 

13 

13 

29 

15 

14

14 ' 

13 

13 

12 

10 

12

Iron 

(Fe)

0.04

.06 

.06 

.06 

.06 

.02 

.04

.08 

.08 

.10 

.28 

.13 

.07

.09 

.03 

.06 

.07 

.07 

.06

Calcium 

(Ca)

55 

60 

61 

56 

64 

71

72 

73

78

91 

77 

84 

79 

84 

88

92 

82 

83 

69 

55 

56

58 

42 

36 

30 

28 

28

Magnesium 

(Mg)

9.3

9.7 

10 

12 

14 

16

16 

16 

IT

21 

18 

20 

19 

20 

20

20 

17 

21 

18 

12 

13

15 

9.3 

6.6 

5.4 

5.1 

5.4

Sodium 

(Na)

3 

3 

3 

2 

3 

3

4 

4 

45

53 

43 

51 

50 

55 

58

71 

72 

56 

30 

16 

17

22 

14 

9.7 

9.1 

8.7 

11

Potassium 

(K)

0 

4 

2 

4 

3 

9

2 

3

5.1

4.8 

4.6 

4.5 

5.0 

6.0 

5.3

5.3 

.6.3 

5.0 

3.0 

2.5 

2.6

2.6 

1.8 

1.5 

1.6 

1.6 

1.8

Bicarbonate 

(HCOs)

139 

148 

150 

138 

150 

160

157 

153 

164

186 

164 

164 

163 

177 

179

189 

190 

191 

195 

170 

160

163 

121 

108 

86 

75 

72

Sulfate 

(S04)

111 

123 

124 

110 

145 

169

180 

186 

198

243 

200 

233 

223 

234 

248

277 

246 

231 

138

77 

88

109 

65 

42 

39 

40 

49

Chlo

ride 

(Cl

7.0 

8.0 

7.0 

8.0 

9.0 

13

14

14 

16

20 

15 

17 

16 

19 

19

20 

17 

16 

7.0 

3.2 

3.9

4.8 

3.5 

2.5 

2.6 

2.9 

3.8
July 1-4, (^-10.. ................

July 11-17... _ ...................

July 28-31- __ .............. ....

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

Aug. 11-14, 17-20..................

Aug. 21-25, 27-31 ____ . __ --

Sept. 1-6,8-10 ___ .. _ . __ ...

Sept. 14-20..... -_......._ ....

Sept. 21-30........................

8,668

2,269

1,296

1 035

781

612

483

840

510

3,855

33.2

41.0

59.1

62.9

' 69.1

75.5

81.9

75.0

88.4

44.0

10

10

11

11

12

9.2

12

10

'14

38

46

64

68

72

81

79

90

53

7.9

9.3

14

15

16

19

17

10

11

16

28

46

44

67

75

60

80

25 2.5

90

109

140

147

160

167

160

174

136

77

104

172

175

204

263

229

283

105

6

10

15

16

18

22

19

27

6

i Average for period Dec. 21 to Sept. 30 only.
SAN JUAN RIVER NEAR BLUFF, UTAH

[Composites of daily samples collected at highway bridge, 2,000 feet downstream from gaging.station and 20 miles so

in parts per million]

Date of collection

Oct. 1-10, 1941. 1_ --- __---

Oct. 11-20 ----------------

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

Nov. 1-10. -----------------------

Nov. 11-13, 16-20... . ..............

Nov. 21-30-. .- -.. .........

Dec. 2, 4-10-. _ . ___ ..-. __ --

Dec. 11, 13-20 , 

Dec. 21-25, 27-31..... .............

Jan. 1-8, 10, 1942..------.--. ......

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

Feb. 11-19---. -- . --

Feb. 20-28.. 

Mar. 1-10...... _ . ___ ---------

Man 11-20--...-..... ...........

Mar. 21-26, 28-30 ............ ...

Apr. 11, 13-14, 16-20 ............

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

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

May 21-31.., --__ -.-.

June 11-20.- .....--.-

June 21-30 ________ ___ ..

July 11-17. 19-20-. .... ..........

Aug. 1-10 

Aug. 11-20 

Aug. 21-23, 26-31 

Sept. 1-10 

Sept. 11-20-,- _ ----.-........--

Sept. 21-30...----. _ - ____ .....

Mean 

discharge 

(secondfeet)

8,299 

13, 610 

10,090 

4,422 

3,010 

2,198

1,814 

1,729 

1,568

828 

1,481 

1,618 

1,409 

1,177 

1,050

1,273 

2,560 

2,296 

8,650 

' 11, 120 

10, 570

6,404 

7,015 

9.757 

10,260 

9,475 

7,149

3,538 

2,483 

1,416 

1,007 

866 

623

518 

856 

. 549

4,262

Specific 

conductance 

(KX105 

at 

25° C.)

76.4 

69.5 

67.3 

59.3 

71.4 

79.1

84.3 

84.7 

88.5

105 

95.8 

94.9 

101 

94.1 

98.3

104 

99.7 

99.4 

70.0 

52.4 

52.9

56.3 

44.1 

35.6 

31.3 

30.3 

' 31.4

45.2 

55.9 

67.5 

80.7 

87.3 

105

104 

'107 

102

59.7

Silica 

(SIOj)

/

14 

14 

12 

13 

14 

12

8.8 

8.8 

10

11 

11 

12 

12 

12 

11

11 

9.6 

11 

17 

18 

16

18 

15 

13 

13

2

12 

F4 

& 

12 

 « 

16

a

10

14

Iron

(Fe)

0.08 

.04 

.12 

.04 

.02 

.03

.08 

.08 

.08

.08 

.08 

.12 

.08 

.04 

.04

.08 

.16

.03 

.05 

.06

.06 

.04 

.02 

.03 

.03 

.06

.04 

.05 

.02 

.01 

.01 

.10

.04 

.06. 

.06

.06

Calcium 

(Ca)

73

74 

75 

66 

78 

86

92 

91 

94

115 

102 

101 

103 

100 

102

103 

104 

104 

74 

62 

63

64 

54 

45 

42 

40 

39

52 

60 

70

82 

87 

98

96 

107 

98

, 66

Magnesium 

(Mg)

14 

15 

15 

16 

21 

24

28 

28 

30

35 

31 

30 

35 

31 

34

35 

28 

31 

19 

15 

15

17 

13 

9.4 

7.3

6.7 

7.2

11 

14 

18 

23 

25 

35

34 

35 

31

16

Sodium

(Na)

71 

57 

47 

35 

45 

50

50 

52

58

69 

65 

64 

68 

62 

63

74 

80 

69 

53 

29 

29

33 

21 

16 

13 

12 

15

 2 

4 

5 

6

7 

8

9 

8 

8

Potassium 

(K)

4.5 

4.3 

4.2 

3.2 

2.9 

2.8

8.3 

8.0 

7.4

9.0 

7.7 

9.6 

11 

11 

11

9.6 

9.9 

10 

3.7 

2.9 

2.9

2.7 

2.6 

2.1 

1.4 

2.1 

2.4

6

1 

1 

3 

5 

7

0 

6 

9

39 3.9

Bicarbonate 

(HCOs)

168 

159 

154 

144 

166 

172

176 

174 

175

210 

187 

186 

181 

183 

183

185 

215 

214 

213 

182 

176

176 

149 

129 

117 

109 

99

116 

127 

136 

151 

160 

159

156 

173 

168

157-

Sulfate 

(800

233 

215 

202 

169 

219 

252

279 

284 

305

368 

333 

326 

362 

330 

345

372 

335 

326 

178 

115 

122

139 

95 

67 

58 

56 

68

119 

167 

215 

272 

306 

381

391 

400 

371

168

Chlo

rid

(Cl

11 

9.

9.

9.

13 

15

18 

18 

19

23 

22 

21 

22 

21 

23

22 

22 

22 

11 

5.

5.

7.

5.

3.

3.

3.

4.

7.

11 

15 

19 

21 

34

26 

26 

28

9.4
AN1MAS RIVER AT FARMINGTON; N. M

[Composites of daily samples collected at gaging station at bridge on New Mexico Highway 17, 0.6 mile southea

area, 1,360 square miles. Analyses in parts per milli

Date of collection

Oct. 1-10, 1941... .................

Oct. 11-12, 14-20..................

Oct. 21-23, 25-31... __ . __ ....

Nov. 1-10.-. _ --. __ -.. _ -...-

Nov. 14-20-.-----. ____ ...i _ -

Nov. 23-27, 29-^0-____. ...........

Dec. 1-10....- _ .... _____ ...

Dec. 11-14, 16-48, 20.....

Dec. 21-22, 24-29, 31..... ..........

Jan. 1, 3, 5-8, 10, 1942. _ ........

Jan. 11-12, 14-20--..-.--....-.....

Jan. 21, 24-31.....................

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

Feb. 11-19..-.... ........ 

Feb. 20, 22-28 ..................

Mar. 1-10... .... - _.._.._.__._..

Mar. 11-18,^20-.. . ...... .......

Mar. 21-29, 31 __ .... __ . ....

Apr. 1-10-.-.- ...... ..........

Apr. 11-14, 16-20.. ................

Apr. 21-30-. - --.. .._.___.

May 1-2, 5-7, 9-10.. ........ ......

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

May 21-22, 2^31...... ............

June 11-17, 20.....................

June 21-30. __ _________

July 1-10..... - ._.....___...,.__

July" 11-20-.'...... _.______

July 21-31..... ....................

Aug. 1-10 ____ ...

Aug. 11-20........................

Aug. 21-31. __ .... _________

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

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

Sept. 21-30. _ .- ...................

Mean 

discharge 

(secondfeet)

1,990 

2,857 

3,276 

 1,505 

1,096 

820

665 

566 

474

382 

446 

413 

390 

332 

358

388 

499 

525 

1,342 

1,996 

2,047

1,634 

2,021 

3,839 

4,153 

4,28V 

2,846

1,798 

1,257 

650 

496 

322 

211

178 

357 

207

1,301

Specific 

conductance 

(KX106 

at 

25° C.)

41.7 

33.9 

37.1 44.5" 

49.4 

54.7

59.8 

63.7 

68.1

79.0 

71.9 

74.3 

74.3 

78.9 

74.9

72.4 

67.1 

68.8 

51.8 

39.8 

40.0

41.6 

34.9 

26.0 

23.0 

20.7 

25.1

32.0 

34.6 

46.7 

64.9 

66.0 

74.7

81.3 

70.2 

80.3

39.1

Silica 

(Si02)

8.6 

8.6' 

8.8 

8.6 

8.8 

8.2

8.8 

7.8 

8.8

11 

11 

10 

7.8 

9.4 

9.4

9.4 

9.6 

13 

12

8.4 

&2

7.4 

7.2 

9.0 

5.4 

6.0 

7.2

6.8 

5.6 

7.6 

8.0 

11 

9.2

8.8 

9.2 

!Q

8.0

Iron

CFe)

0.03 

.03 

.03 

.02 

.02 

.02

.02 

.02 

.06

.08 

.10 

.10 

.02 

.02 

.02

.04 

.04 

.16 

v!6 

.16 

.18

.16 

.18 

.18 

.18 

.18 

.16

.12

Calcium 

(Ca)

58 

48 

54 

63 

69 

77

84 

90 

95

112 

101 

102 

101 

107 

103

96 

86 

89 

70 

69 

59

60 

52 

41 

35 

31 

36

38 

46 

62 

71 

86 

97

105 

91 

103

55

Magnesium 

(Mg)

8.2 

7.3 

8.6 

11 

12 

13

14 

15 

16

18 

16 

17 

17 

18 

17

17 

15 

18 

15 

11 

12

12 

9.6 

6.6 

6.4 

5.9 

6.1

6.7 

7.6 

10 

12 

15 

17 

19 

15 

17

9.6

Sodium

(Na)

17 

10 

13 

15 

18 

22

23 

27 

32

39 

35 

37 

37 

40 

35

37 

40 

49 

16 

7.4 

5.3

8.3 

4.6 

(J)

(') 

9. 

11 

2 

3( 

3( 

« 

51 

3£ 

63

13

Potassium 

(K)

2.6 

2.2 

2.4 

2.2

2.7 

2.7

5.4 

5.3

5.4

5.4 

4.8 

4.8 

5.3 

5.9 

5.8

5.3 

5.3 

4.2 

3.8 

3.2 

3.0

2.8 

2.6 

2.4 

2.3 

2.6 

3.0

4

! 

1

'

3.0

Bicarbonate 

(HCOs)

130 

121 

144 

154 

157 

167

172 

179

188

215 

193 

192 

196 

203 

194

191 

186 

199 

181 

162 

156

155 

129 

101 

83 

69 

71

76 

90 

112 

139 

159 

173

183 

163 

177

126

Sulfate 

(S04)

98. 

66 

66 

-94 

115 

134 

150 

166 

182

217 

198 

208 

205 

222 

211 

199 

181 

205 

111 

67 

72

80 

67 

45 

40 

41 

54

68 

85 

124 

148 

188 

223

256 

201 

244

86

Ch

rid

(C

7

5

5

8

11 

12

16 

18 

20

24 

21 

22 

23 

25 

22

22 

20 

20 

7

4

4

5

4

3

3

3

4

6

7

14 

16 

20 

22

24 

21 

26

7

i I>ess than 5 parts per million,
GULA BtVEft At SAI^ORD, AR12.

[Composites of daily samples collected at gaging station at bridge in Safford, 4>£ miles downstream from San Simo

per million]

Date of collection

Oct. 1-10, 1941......... _ . ___ .

Oct. 11-20...... . 

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

Nov. 1-10-........ .... _ .........

Nov. 11-15, 17-20...... ........ ....

Nov. 21-30..... . . .

Dec. 1-10.. ............. ..........

Dec. 11-13, 16-20..................

DBc. 22-31.. _ . _ .-._...-._ 

Jan. 2-10, 1942. ___ . __ .......

Jan. 11-20... .

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

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

Feb. 11-19.... ..... ___ 

Feb. 20-28... __ ..... _ ... _ ...

Mar. 1-10.... _ .. _ ........ __ .

Mar. 11-20........................

Mar. 21-31. 

Apr. 1-10...... ...............

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

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

May 1-10. _ ....... ____ . ....

May 11-20.... __ 

May 21-31.. ___ ... . _ . __ .

June 1-10. _ ... _________

June 11-13, 16-20.. __ . __ .. __ .

June 21-30 ____ . __ . ____ ..

Mean 

discharge 

(secondfeet)

2,679 

668 

466 

388 

396 426'

342 

1,680 

511

445 

603 

469 

380 

371 

334

342

278 

245 

229 

 243 

277

143 

38.6 

14.9 

11.9 

6.3 

6.7

Specific 

conductance 

(KX10B 

at 

25° C.)

46.1 

68.2 

71.6 

77.9 

78.8 

69.3

78.8 

49.4 

67.6

71.0 

60.2 

61.9 

66.9 

69.8 

78.6

69.8 

64.8 

64.5 

76.1 

72.3 

71. 2

102 

141 

186 

197 

220 

210

Silica 

(SiOz)

34 

37 

38 

36 

36

Iron 

(Fe)

0.16 

.16 

.16 

.16 

.20 

.16

.08 

.16 

.12

.08 

.12 

.12 

.12 

.12 

.16

.20 

.08 

.12 

.12 

.16 

.35

.43 

.06 

.05 

.06 

.05 

.08

Calcium 

(Ca)

41 

66 

66 

60 

59 

64

58 

43 

52

54 

49 

49 

61 

52 

66

52 

49 

48 

50 

60 

60

67 

74 

93 

92 

100 

100

Magnesium 

(Mg)

10 

14 14' 

14 

14 

14

14 

11 

14

14 

13 

13 

13 

14 

14

13 

14 

13 

14 

14 

14

18 

20 

26 

28 

31 

29

Sodium 

(Na)

Potassium 

(K)

42 

72 

78 

86 

93 

74

92

44 

75

79 

63 

67 

71 

79 

93

80 

72 

73 

94 

85 

80

125 

180 1 10 

265 1 13

326 

303

Bicarbonate 

(HC03)

160 

214 

215 

225 

227 

207

225 

168 

208

214 

199 

205 

206 

216 

215

211 

204 

195 

200 

196 

184

234 

239 

302 

287 

312 

326

Snlfate 

(S04)

37 

51 

50 

54 

55 

48

54 

38 

48

60 

42 

43 

47 

50 

57

50 

51 

63 

68 

62 

64

91 

117 

170 

178 

209 

188

Chl

rid

(C

4

8

9

10

11

9

11

4

8

9

7

7

S

9

11

9

8

8

10

10

9

16

24

36

37

42

39
Julyl-10-.__ - ......- 

July 11-14, 17-20..................

July 15-16..... ..__. __ .... ....

July 22-31-.. _ . __ .........

Aug. 1, 3-8 

Aug. 10 .......................

Aug. 11-15, 17-20.......... ..

Aug. 21-22, 24-30... ___ . ___ .

Aug. 31. .....................

Sept. 1-3, 9-10.............. ..

Sept. 4-8.. ................

Sept. 11. .. . .........

Sept. 12-19... -. 

Sept. 21-24.......... . ......

Sept. 26, 28-30 *

5.7

3.6

12.0

5.9

194

369

136

25.1

9.0

19.2

117

20.0

815

157

32.5

358

196

199

122

164

114

53.2

61.7

102

204

118

60.2

109

46.8

67.2

98.8

62.8

37

3722'

42

38

38

39

42

39

36

34

42

37

.05

.07

14

.06

.11

.22

.08

.06

.08

.22

.09

.07

.15

96

88

48

75

50

41

65

116

74

41

72

34

4ft

64

49

24

27

12

20

10

9.8

15

28

17

11

19

7.8

12

16

12

281

295

189

236

175

78

132

293

157

75

129

62

76

125

69

313

296

228

276

227

176

208

239

371

266

198

266

183

195

253

194

168

177

105

136

110

44

31

77

189

86

43

76

31

41

70

47

36

38

19

29

17

6

7

16

37

20

7

17

4

9

15

7
48 QUALITY OF SURFACE WATERS, 1942

COLORADO AND GUNNISON RIVERS IN COLORADO

[Composites of daily samples collected ffom (1) Colorado River at diversion dam about 1 Ji mfles upstream 

from Cameo and 5 miles downstream from gaging station; and (2) Gunnison River half a mile upstream 

from point of diversion of Redlands power canal and 3 miles upstream from mouth and Grand Junction. 

Dissolved solids in parts per million and discharge in second-feet]

/ 

, Date of collection

Oct. 1-10, 1941. 

Oct. 11-20 ........................

Nov. 1-10-. _ . 

Nov. 11-20-. . .............................

Nov. 21-30 

Dec. 1-10 . ......................

Dec. 11-20 ................ ...........................

Dec. 21-31- . ......... ........ 

Jan. 1-10, 1942 

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

Feb. 11-20.. ............................................

V&b.21-28........... ...................................

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

Mar. 11-20 

Mar. 21-31. ... ... ... ....... ....... .....

Apr. 1-10....... 

Apr. 11-20 

Apr. 21-30 

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

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

May 21-31- 

Junell-20... .... ........

June 21-30 . . _ .. __ .. _ _ ...

July 1-10-; ................................

July 11-20..... 

July 21-31 ............

Aug. 1-10- . . .

Aug. 11-20... 

Aug. 21-31 _ 

Sept. 1-10.- 

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

Sept. 21-30. .. ..... ......

Colorado River near 

Cameo, Colo.

Dissolved 

.. solids

680 

636 

630 

648 

689 

$02

775 

813 

862 

1,043 

878 

846

822 

904 

878 

826 

803 

852

660 

413 

411 

441 

319 

248

183 

168 

193 

254 

331 

443

527 

664 

738 

857 

841 

839

637 

391

Mean 

discharge

2,377 

3,104 

2,632 

2,281 

2,183 

1,775

1,816 

1,699 

1,549 

1,357 

1,482 

1,528

1,583 

1,528 

1,535, 

1,635 

1,682 

1,700

3,022 

6,584 

7,219 

6,909 

10,280 

19,090

23,820 

22,140 

15, 310 

9,018 

6,727 

4,317

3,014 

2,141 

1,665 

1,356 

1,481 

1,514

4,986

Gunnison River near 

Grand Junction, Colo,

Dissolved 

solids

1,205. 

939 

812 

859 

, 970 

1,187

1,122 

1,149 

1,232 

1,250 

1,136 

1,157

1,195 

1,261 

1,225 

1,215 

1,260 

1,155

605 

319 

373 

358 

277 

376

246 

270 

345 

506 

667 

1,151

1,415 

1,530 

1,982 

1,637 

1,696 

1,906

1,000 

566

Mean 

discharge

2,766 

3,349 

3,&» 

2,513 

2,069»

1,836;

1.49T 

1,385 

1, 216; 

1,010 

1,100 

1,322*

1,200 

975 

1,208- 

1,208 1,242" 

1,169-

3,827 

11,650 

12,070 10.1201 

10,840- 

15,750-

14,070 

12,800* 

7,811 

4,058 2, 767' 

1,460

1,255 

1,207 

861 

771 

1,086 

942

4, COO
COLORADO KIVER BASIN

COLORADO AND GREEN RIVERS IN UTAH

(Composites of daily samples collected from (1) Colorado River at highway bridge below gaging station, 

1 mile downstream from Dolores River and 11 miles south of Cisco; and (2) Green River at gaging station, 

1 mile southeast of town of Green River and 22 miles upstream from San Rafael River. Dissolved solids 

in parts per million and discharge in second-feet]

Date of , collection

Oct. 1-10, 1941 

Oct. 11-20.J ..... .... ........ .... ..... .... ...

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

Nov. 11-20. ________ . ________________

Nov. 21-30 . .........

Dec. 1-10 .... .... ... ........ ..... ...

Dec. 11-20 _ .-.- __ . . ... .

Dec. 21-31 

Jan. 1-10, 1942 

Jan. 11-20 ...........

Jan. 21-31- 

Feb. 1-10 

Feb. 11-20 .

Feb. 21-28 -- -_ 

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

Mar. 11-20 :

Mar. 21-31 . 

Apr. 1-10 . .............

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

Apr. 21-30 

May 1-10-- . 

May 11-20 . . ...

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

June 1-10 _____________ .....................

June 11-20 . ... .........

June 21-30.. ________________________

July 1-10. .......... ........ ..........

July 11-20 ............ . . ...

July 21-31 .... ... ..... ............. ... ...

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

Aug. 11-20.. ......... ............................ ......

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

Sept. 1-10 ...

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

Sept21-80--..... ................................

Average ___________ . ...................

Colorado River near 

Cisco, Utah

Dissolved 

solids

987 

780 

728 

748 

892 

1,029

1,045 

1,114 

1,186 

1,389 

1,189 

1,168

1,215 

1,359 

1,266 

1,172 

1,104 

1,107

655 

386 

406 

435 

330 

286

264 

267 

299 

450 

596 

794

1,144 

1,339 

1,687 

1,985 

1,785 

1,680

952 

551

Mean discharge

7,243 

11,120 

9,845 

6,436 

5,118 

4,141

4,168 

3,791 

3,275 

2,328 

3,253 

3,210

3,278 

3,113 

2,523 

3,197 

4,082 

3,854

13,060

29,880 

24,830 

21,120 

27,760 

38,480

39,200 

35, 470 

24,180 

13,300 

9,448 

5,842

3,889 

3,062 

2,140 

1,804 

2,507 

2,456

10,640

Green River at Green 

River, Utah

Dissolved 

solids

784 

717 

715 

670 

643 

681

704 

729 

732. 

793 

836 

694

720 

709 

738 

717 

689 

681

608 

453 

398 

476 

414 

392

300 

260 

314 

364 

» 435 

482

565 

629 

711 

754 

837 

822

616 

480

Mean'discharge

3,477 

5,642 

6,278 

4,889 

4,060 

3,137

3,028' 

2,888 

2,333 

1,102 

2,030 

2,291

2,377 

2,310 

1,851 

2,366 

5,179 

5,254

11,500 

16, 510 

15,230 

11,610 

15,160 

20,560

26,590 

23,710 

13,760 

7,990 

6,593 

5,767

. 3,293 

2,418 

1,778 

1,472 

1,532 

1,569

6,893
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COLORADO RIVER BASIN

LAKE MEAD, ARIZ.-NBiV. Continued

INTAKE TOWEKS, MILE 854.7 Continued

Date of collection

194$ 

Jan. 30... ___ ...

Mar. 2............

Apr. 1... .........

May 1.. ..........

June^S.. ____ .

Depth (fet)

5

60

100

150

200

250

300

350 

400

437

450

455

5

50

100

150

200

250

300

350

400 

.8433

440

445

5

50

100

150

200

250

300 

350

400

425

435

440

5

50

100

150

200

250

300

350

400

439

445

455

5

50

100

150

200

250

300 

350

400

455

460

465

Elevation abovelevel meansa

(feet)

1,181

1,136

1,086

Ijfl36

986

936

886

836 

786

749

736

731

1,171

1,126

1,076

1,026

976

926

876

826

776 

743

736

731

1,166

1,121

1,071

1,021

971

921

871 

821

771

746

736

731

1,178

1,133

1,083

1,033

983

983

883

833

783

744

738

728

1,194

1,149

1,099

1,049

999

949

899 

-849

799

744

739

734

Temperature 

(°F.)

56.3

56.3

56.2

56.2

56.2

56.1

55.9

55.4 

55.0

54.9

62.7

62.4

55.0

54.8

54.5

54.5

54.3

54.2

53.4

53.3

53.3

53.4

60.5

61.1

56.1

55.2

54.6

54.1

53r6

53.2

53.2 

53 2

53. 0'

53.0

60.7

61.0

58.6

56.8

55.8

54.7

53.5

53.5

53.5

53.5

53.5

53.2

56.6

a. 6

70.7

66.2

57.4

55.0

53.9

53.8 

53.6

53.5

53.5

55.4

58.2

Specific conduct- (KX10« ance 

C.) 25° at

109

109

109

109

108

108

108

110 

109

109

144

147

108

108

108

109

109

108

110

110

]10 

111

144

144

110

110

110

110

111

112

112 

113

113

114

148

150

110

110

111

111

112

112

113

113

113

113

138

151

112

112

112

111

111

112

112

112

112

114

156

156

(Ca) Calcium 

108

102

108

104

104

103

104

106

104

Magnesium(Mg)

28

29

28

30

 ?«

34

28

28

29

i+

&OJ 

^ ^

§ i3 a|

89

96

90

94

94

91

98

97

99

Bicarbonate 

(HCO,) '

157

158

157

159

157

158

158

169 

170

171

352

374

159

159

159

158

160

159

170

172

170 

172

373

363

158

160

160

162

16fi

177

174 

173

174

174

382

396

161

161

163

163

167

171

169

170

171

172

338

' 402

159

160

160

161

161

165

169 

168

170

182

466

448

Sulfate (SO )4

335

326

333

328

333

329

335

341

333

Chloride (Cl)

72

74

73

76

73

78

76

74

/

77

% 

1

1 

fl

709

710

710,

716

710

721

720

724

725

Total hardness 

asCaCOj

384

374

384

383

374

397

374

380

378

See footnotes at end of table.
64 QUALITY OF SURFACE WATERS, 1942

LAKE MEAD, AMZ.-NBV. Continued.

INTAKE TOWERS, MILE 354.7 Continued

Date of collection

July 6-.. . ..

July 31............

Sept. 1.... ........

Depth (feet)

5

50

100

150

200

250

300

350 

400

450

470

»472

475 

480

«512

5

50

100 

150

200

250

300 

350

400

450

471 

»474

475 

480

«524

5

50

100 

150

200

250 

300

350

400

450

«472

476 

480

<488

«520

Elevation abovelevel meansa

(feet)

1,208

1,163

1,113

1,063

1,013

963

913

863 

813

763

743

741

738 

733

701

1,208

1,163

1,113 

1,063

1,013

963

913 

863

813

763

742 

739

738 

733

689

1,205

1,160

1,110 

1,060

1,010

960 

910

860

810

760

738

734 

730

722

690

« i*

3

S?

ftS^

Sto 

EH

79.2

79 fi

65 7

fiA Q

56.8

M

A

54.3

53.8 

54.4

53.6

53.6

55.8

79.8

75.4

67.8 

61.8

54.9

54.2

54.0 

53.7

53.7

53.7

54.2

55.3

79.6

78.0

68.2 

60.3

55.5

53.9 

53.0

53.0

52.8

52.7

55.5 

57.0

Specific conduct- 

(KX10« ance 

25° C.) at

102

105

106

. 109

109

110

112

112 

 111

112

116

149 

145

91.1

93.8

101

107

110

110

111

110

112

112

135

147 

161

88.2

87.5

98.9 

107

111

111 

111

112

112

113

144 

156

Calcium (Ca)

96

102

150

87

94

103

129

138 

164

82

94

103

144

Magnesium 

(Mg)

W

29

48

24

23

28

44

49 

54

26

28

30

45

at *& 9g

1$ 'ggR

03

91

^

104

131

. 78

93

100

117

132 

137

69

80

96

120

Bicarbonate 

(HCOs)

162

161

162

162

160

168

174

179 

175

171

211

422 

390

150

154

160 

160

163

165

169 

170

171

178

347

410 

500

139

129

157 

160

163

165 

169

166

172

168

182

380

488

Sulfate (SO 4)

309

331

378

271

299

331

347

365 

384

259

298

334

365

5

1 

6

66

77

83

56

63

75

79

83 

85

54

60

74

80

Dissolved solids

669

731

998

590

651

720

887

969 

1,070

560

639

721

943

Total hardness 

CaCOjs 

350

374

572

316

329

372

503

546 

632

312

350

380

544

i Sample collected just above Mile 270. 

i Sample collected just below Mile 270. 

' Top of silt layer.

* Depth to which 10-pound weight sank in 10 minutes. 

' Depth to which conductance cell sank.

 Depth to which thermometer sank.

SUSPENDED SEDIMENT

In addition to chemical analyses, records of daily, monthly, and 

annual loads of suspended sediment are given for several stations on 

streams in the Colorado River Basin. The daily loads are calculated 

from the mean daily discharge and the mean concentration of suspended sediment determined in daily samples collected from three or 

more verticals in the cross section. The samples were collected in 

such a way as to include water and sediment from all points in the 

vertical. At some stations samples were collected only two or three
SUSPENDED SEDIMENT 'LOADS AND MECHANICAL ANALYSES 55

times a week. Loads of suspended sediment were estimated for the 

days on which no samples were collected.

Mechanical analyses are reported for samples of suspended sediment 

collected several times each month at stations on two rivers. The 

analyses were made by standard sieves for sediment coarser than 

0.074 millimeter and by decantation from sedimentation cylinders 

for the finer sediment. The results are reported in percent for several 

«ize ranges expressed in millimeters.

TABLES OP SUSPENDED SEDIMENT LOADS AND 

MECHANICAL ANALYSES

COLORADO RIVER BASIN 

COIX>RADO RIVER NEAR CISCO, UTAH

'{Samples of suspended sediment collected on many days in each month from cableway at gaging station 

I mile downstream from Dolores River and 11 miles south of Cisco]

Daily sampfes of suspended sedimerft loads,

October

Day

1 .

2 

3 

4........

6. 

6.. ...

7. .......

8 

9. _ ....

10 

11 

12.......

13 

14.......

16 

16 

17 

18 

19. 

20.... ...

21. _ ...

22 _ 

23 

24 

25 _ ....

26 

27... 

28 

29 

30 

31

Tot

Mean 

discharge 

(secondfeet)

5,300

6,500 

9,190

9,300

 7,460

6,060

5,990 

11,000 

22,600 

16,700 

11,500

9,670

8,840 

10,500 

10,500

8,720

11,100

9,690

8,iio 

al load (toi

Suspended 

sediment

Mean 

percent

0.14

.21

.58

.73

.34

.14

.08 

2.95 

4.58 

1.25 

.50

.32

.32 

2.93 

.66

.30

.51

.68

.21 

as). 

Tons per 

day

20,000

36,900 

144,000

183,000

68,500

22,900

12,900 

876,000 

2,790,000 

564,000 

155,000

82,700

76,400 

831,000 

187,000

70,600

153,000

178,000

46,000

1 10400,000

November

Mean 

discharge (second- 1 

(feet)

7,130

6,760

6,360

5,850

5,320

4,930

5,080

5,140

5,360

5,000

4,050

3,450

3,930

4,410

...........

Suspended 

sediment -

Mean 

percent

0.16

.14

.11

.12

.10

.08

.06

.96

.11

.07

.05

.04

.04

.04

Tons per 

day

30,800

25,600

18,900

19,000

14,400

10,600

8,230

8,330

15,900

9,450

6,470

3,730

4,240

4,760

1381,000

December

Mean 

discharge 

(secondfeet)

4,410

4,450

4,510

3,970 

3,620 

3,600

3,830

4,070

3,790

3,670

3,600

3,510

3,380

3,160 

3,210 

3,080

3,140

Suspended 

sediment

Mean 

percent

0.03

.04

.04

.04 

.03 

.03

.04

.04

.04

.02

.03

.02

.02

.03 

.03 

.02

.02

..... ....

Tons per day

3,570

4,810

4,870

4,290 

2,930 

2,920

4,140

4,400

4,090

1,930

2,920

1,900

1,830

2,560 

2,600 

1,669

1,700

193,600

See footnote at end of table.
56 QUALITY OP SUEFAGE WATERS, 1042

COLORADO RIVER NEAR CISCO, UTAH Continued

January

Day

1.... .

2- __ ..

3.-. 

4... -

5.. 

6.- 

1. .......

8.. .

9. -

10-. 

11. . 

12- 

13-. 

14... 

15-. 

16-- 

17-. 

18.. 

19... 

20 . 

21 

22... 

 23.. 

24- 

25- 

26- 

27.. 

28 

29.. 

30...- 

31

Mean 

discharge 

(secondfeet)

3,360

2,390

1,750

1,200

2,500 

' 3,360

3,250

3,160

3,120

3,340

3,160

2,870 

3,120

3,160

3,320

3,400

Total load (to

Suspended 

sediment

Mean 

percent

0.02

.02

.03

.02

.03 

.08

.05

.04

.03

.04.

.02

.02 

.03

.03

.02

.03

Tons per 

day

1,810

1,290

1,420

648

2,020 

7,260

4,390

3,410

2,530

3,610

1,710

1,550 

2,530

2,560

1,790

2,750

1 73, 800

April

1. . ......

2. -

3 

4_ 

5.... __

6 

7. 

8.. 

9- 

10.. 

11.. 

12.. 

13.. 

14 

15...- 

16.. 

17. 

18.. -

19 _ 

20 

21.. 

22... -

23- 

24.. 

25

26... 

27.. 

28..- 

29... 

30... 

31... 

6,040

10, 300 

13,500 

19, 100 

. 19, 900

15,200

20,800 

24,100 

29,600

36,600

32, 100 

28,500

28,800

31,300

23,700

17,600

0.63

.84 

.93 

1.22 

.89

.57

.68 

.82 

.93

.82

.57 

.50

.62

.56

.40

.29

Total load (tons) . . _ -

103,000

234,000 

339,000 

629,000 

47,8,000

234,000

382,000 

534,000 

743,000

810,000

494, 000 

385,000

482,000

473,000

256,000

138,000

1 12, 800, 000

February

Mean 

discharge 

(second- 

(feet)

3,210 

3,010

3,050

3,450 

3,410"

3,410

2,940

2,980

2,900

2,650

2,400 

2,320

3,170

3,010

2,710 

2,830

Suspended 

sediment

Mean 

percent

0.05 

.04.

.03

.05 

.05

.05

.03

.03

.02

.02

.01

.02

.08

.05

.04 

.02

Tons per 

day

4,330 

3,250

2,470

4,660 

4,600

4,600

2,380

2,410

1,570

1,430

648 

1,250

6,850

4,060

2,930 

1,530

190,200

May

17, '400

18,800 

19,400

20,200

22,300

29,700 

34,300

38,200

26,600

21,800 

21,500

21,400 

22,700 

25,800

33,100

41,600

50,000 

47,700

42,900

0.32

.34 

.39

.29

.31

.42 

.45

.38

.24

.17 

.17

.16 

.14 

.23

.25

.26

.26 

.19

.12

150,000

173,000 

204,000

158,000

187,000

337, 000

417, 000

392,000

172,000

100,000 

98,700

92,400 

85,800 

160,000

223,000

292 000

351, 000 

245,000

139,000

'6,650,000

March

Mean 

discharge 

(secondfeet)

2,980

3,010

3,320

3,680

, 2,980

3,950

4,890 

6,040

3,810

3,120

3,620 

3,410

3,230

4,720 

4,450

3,570

3,810 

4,170

Suspended 

sediment

Mean 

percent

0.04

.04

.07

.08

.06

.11

.54 

.59

.32

.09

.07 

.12

.06

.54 

.24

.14

.08 

.13

Tons per 

day

3,120

3,250

6,270

7,950

4,830

11,700

71,300 

96,200

32,900

7,580

6,840 

11,000

5,230

68,800 

28,800

13,500

8,230 

14,600

1 684, 000

June

38,600

37, 100

36,800

41,300 

43,000

38,000

41,300

37,300 

32,300

30,600

34,700

31,400 

29,000

24,200

20,900

18,000 

16,000

Or ll

.10

.08

.12 

.10

.08

.08

.08' 

.10

.10

.08

.07 

.07

.08

.08

.07 

.08

115,000

100,000

79,500

134.000 

116,000

82,100

89,200

80,600 

87,200

82,600

75,000

59,300 

54,800

52,300

45,100

34,000 

34,600

12,400,000

See footnote at end of table.
SUSPENDED SEDIMENT LOADS AND MECHANICAL ANALYSES 57 

COLORADO RIVER NEAR CISCfO, UTAH Continued

July

Day

1 

2. 

3.. ......

4 _ ...

6_ 

«. 

7. __ ...

&.. ......

* 

10 

11.......

12 

13- .

14.......

15 -

16 

17.. 

18 

19 

20 . 

21.......

22.......

23 

24- .,-

25. 

26 

27- 

28.- 

29.......

SO.......

31 .

Mean 

discharge 

(secondfeet)

14,600

13,800

12,900 

12,900

12,000

11,400

9,720 

9,040

8,250

9,270

10, 100

8,060

6,310

6,230

4,600

4,390

Suspended 

sediment ?;>.'.

Mean 

percent

0.07

.06

.06 

.05

.04

.04

.04 

.04

.04

.18

.15

.06

.03

.02

.01

.02

Total load (tons) ___

Tons per 

day

27,600

22,400

17,400 

17,400

13,000

12,300

10, 500 

9,760

8,910

45,100

40,900

13,100

5,110

"*" 2,820

1,240

2,370

> 473, 000

August

Mean 

discharge 

(second- 

(feet)

4,210

4,030

4,370

3,830

3,360

2,960

3,170

3,640

3,140

2,610

2,230

2,070

2,030

2,280 

2,170

1,960

Suspended 

'sediment "

Mean 

percent

0.02

.01

.03

.02

.01

.01

.04

.03

.03

.02

.02

.01

.01

.01 

.01

.01

Tons per 

day

2,270

1,090

3,540

2,070

907

799

3,420

2,950

. 2,540

1,410

1,200

559

548

616 

586

529

150,200

September

Mean 

discharge 

(secondfeet)

1,840

1,650 

1,640

1,800

2,030

1,920 

2,280

2,760

2,800

2,440

2,350

2,450

2,470

2,470

2,470

Suspended, , 

sediment^-' -

Mean 

percent

0.01

.01 

.01

.02

,01

.01 

.22

.03

.02

.01

.01

.04

.02

1 .03

.03

Tons per 

day

497

446 

443

972

648

518 

13,500

2,240

1,510

659

634

2,650

1,330

2,000

2,000

1 54, 800,

Total load for year...____._....___._......._..._. .__._._... ..tons.. 33,850,000

1 Includes loads estimated for missing days.
58 QUALITY OF SUBFACE WATERS, 1942

COLORADO RIVER AT BRIGHT ANGEL CREEK, NEAR GRAND CANYON,.

ARIZ.

[Daily samples of suspended sediment collected from cableway at gaging station a quarter of a mile upstream from Bright Angel Creek, 11 miles by trail northeast of Grand Canyon Village and 267 miles, 

upstream from Boulder Dam]

Daily samples of suspended sediment loads, 1941 4&

October

Day

1. __ ..

2.. ......

3_ 

4- 

5.. ...

6 -

1. .......

8.. ......

9 ... .....

10 

11- 

12.......

13 

14 

15 

16 .

17 

18.. 

19.. 

20.......

21.......

22.......

23- 

24. 

25 .

26 

27- 

28.. 

29.. _ .-.

30 

31 

Mean 

discharge 

(secondfeet)

21,300 

21,200 

19.600 

22,500 

26.3CKK

33,600 

28,400 

23,700 

21, 700 

20,200

18,200 

17,400 

16,600 

26,700 

64, 600

82, 000 

52,400 

35, 800 

28,700 

25,000

22,700 

26,000 

35.000 

36,000 

35, 500

34.500 

34,800 

39,200 

33, 600 

29.400 

27,200

Suspended 

sediment

Mean 

percent

5.08 

2.32 

1.72 

3.52 

5.43

4.66 

3.18 

3.13 

12.20

1.27

U.09 

.91

.71 

2.58 

6.10

6.36 

5.59 

3.96 

2.76 

1.75

1.08 

.93 

1.24 

U.52

1.80

1.67 

1.61 

2.17 

1L76 

1.34 

1.28

Total load (tons). 

Tons per 

day

2,920,000 

1, 330, 000 

910, 000 

2, 140, 000 

3, 860, 000

4,230,000 

2.440,000 

2,000,000 

1, 290, 000 

693,000.

536, 000 

428,000' 

318,000 

1, 860, 000 

10, 600, 000

14, 100, 000 

7, 910, 000 

3, 830, 000 

2, 140, 000 

1,180,000

662,000 

653,000 

1, 170, 000 

1, 480, 000 

1,730,000

1, 560, 000 

1, 510, 000 

2,300,000 

1, 600, 000 

1,060,000 

940,000

79, 380. 000

January

1- 

"i.. ......

3 -

4 

5 

6 

7 .

8-.... ...

9.. ...

10 

11 

12 

13... ....

14... _ .

15 

16 

17 

18- _ -

19 

20 .

21 

22 .

23 

24 

25.- __ .

26.- .

27... ....

23. 

on

^n

31 

Tot

8,180 

8,230 

8,020 

7,880 

7,850

7,440 

6,450 

5,350 

4,430 

3,540

3,160 

3,170 

4,240 

5", 080 

6,600

7,070 

7,620 

7,580 

7,740 

8,060

8,310 

8,160 

7,900 

7,820 

7,720

7,680 

7,880 

8,000 

8,240 

8,390 

8.740 

al load (to!

0.06 

.05 

.05 

1.05 

1.05

.05 

.04 

.04 

.03 

.02

1.02 

.02 

.02 

.03 

.05

.06 

.06 

i.OS 

.11 

.09

.09 

.09 

.08 

.06 

.06

.06 

1.06 

.07 

.08 

.08 

.08

IS) 

13, 300

11, 100 

10,800 

10,600 

10,600

10,000 

6.970 

5,780 

3,590 

1,910

2,340 

1,710 

2,290 

4.110 

8,910

11,600 

12,300 

16, 400 

23,000 

19,600

20,200 

19,800. 

17, 100 

12, 700 

12,500

12,400 

12,800 

15, 100 

17,800 

18, 100 

18, 900

364,200

November

Mean 

discharge 

(secondfeet)

27,300 

25,000 

24.200 

21,900 

19,900

19,000 

18,200 

17,800 

17,600 

17. 100

16,500 

16,000 

15,800 

15, 300 

15,200

14,700 

14,500 

14,000 

14,000 

14,000

13,900 

13,800 

13, 700 

13. 600 

13,000

12,200 

11,400 

10,800 

10,200 

9,920

Suspended 

sediment

Mean 

percent

0.94 

.82 

.66 

.64 

» .52

.39 

.36 

.36 

.27

.27

1.26 

.24 

.22 

.21

Tons per 

day

693.000 

554, 000 

431,000 

378,000 

279,000

200,000 

177, 000 

173, 000 

128,000 

125,000

116, 000 

104, 000 

93,900 

86, 800

i

24,310,000

February

8,740 

8.590 

8,610 

8,720 

8.660

8,500 

8,210 

8,140 

8,180 

8,340

8.530 

8,610 

8,690 

8,720 

8,550

8,120 

7.900 , 

7,560 

7,500 

7,310

7,100 

6.600 

6,420 

6,170 

6,410

6,520 

6,870 

7,100

0.09 

.09 

1.09 

.09 

.10

.09 

.09 

.08 

.09 

.08

.08 

.08 

.08 

.12 

.08

.08 

.07 

.07 

.07 

.06

 .05 

.04 

.04 

.04 

.04

.04 

.04 

.06

. __ _ ____.- __ .-

21,200 

20, 900 

20,900 

21,200 

23,400

20,700 

20,000 

17, 600 

19,900 

18,000

18,400 

18, 600 

18,800 

28,300 

18,500

17,500 

14,900 

14,300 

14,200 

11,800

9,580 

7,130 

6,930 

6,660 

6,920

7,040 

7,420 

11,500

442,300

December

Mean 

discharge 

(secondfeet)

9,980 

10,100 

10,200 

10,200 

10,200

10,300 

10,400 

10, 500 

10,700 

10, 500

10,400 

10, 100 

9,740 

9,690 

9,650

9,530 

9,450 

9,580 

9,640 

9,640

9,690 

9,580 

9,670 

9,600 

9,230

8,990 

9,030 

8,750 

8,510 

8,200 

8,000

Suspended 

sediment

Mean 

percent

10.10 

.09 

.10 

.12 

.10

.09 

.11 

.10 

.11 

.10

.09 

.09 

.12 

.08 

.08

.07 

.09 

.08 

.08 

.08

1.08 

.09 

.07 

.07 

1.06

.06 

.06 

1.06 

.06 

.06 

.05

Tons per 

day

26,900- 

24,500 27,600' 

33,000 

27,500"

25,000 

30,900 

, 28,400 

31,80(T 

28,400

25,300 

24,500 31,600* 

20,90tt

20,800--

18,000- 

23,000 20,700- 

20,800 

20,800:

,20,900 

23,300 18,300- 

18, 10&; 

15,000

14,600- 

14.600 

14,200 

13,800 

13,300 

11.200

687,600

March

7,240 

7,260 

7*160 

7,100 

7,190

7.360 

7,260 

7,600 

7,910 

8,350

8,600 

8,550 

8,280 

9,160 

10,800

11,900 

13,500 

15, 100 

14,900 

15,300

14, 100 

13,700 

12,500 

12, 100 

11, 100

10, 600 

11,300 

12,600 

14,000 

13,500 

13,400

0.07 

.06 

.05 

.05 

.05

.06 

.08 

1.08 

.09 

.11

.12 

.13 

.14 

.16 

.30

1.50 

.66 

.76 

.76 

.86

.60 

.55 

.49 

1.48 

.47

.36 

.38 

.56 

.84 

.66 

.63

13.700 

11,800 

9,670 

9,590 

9,710

11,900 

15.700 

16,400 

' 19, 200 

24,800

27,500 

30,100 

31,300 

39.600 

87,500

161,000 

241,000 

310,000 

306,000 

355,000

228,000 

203,000 

165.000 

157,000 

141,000

103,000 

116,000 

191,000 

318,000 

241,000 

228,000

3.822,000

See footnotes at end 6f table.
SUSPENDED SEDIMENT LOADS AND MECHANICAL ANALYSES 59

COLORADO RIVER AT BRIGHT ANGEL, CREEK, NEAR GRAND CANYON

ARIZ. Continued

April

Day

1.. 

2.. ......

3 

4. 

5 .

6 

7 

8 .

9 

10 

11 

12 

13.. 

14-. 

15 

16- 

17- 

18. 

19. 

20. 

21_ 

22 

23. 

24. 

25. 

26. 

27 - 

28.. 

29 

30 

31

Mean 

discharge 

(secondfeet)

13,300 

13,000 

14,500 

16,200 

18,600 

23,400 

36,200 

49,000 

51,200 

44,900 

40.500 

41,200 

44,600 

48, 100 

55,000 

60,000 

63,300 

66,000 

63,400 

63,200 

61,800 

53,300 

49,000 

49,800 

55,300 

68,700 

64,400 

60,000 

55,400 

49,900

Total load (toi

Suspended 

sediment

Mean 

percent

0.59 

».70 

.82 

1.25 

1.57 

2.03 

2.68 

3.16 

2.95 

2.45 

2.11 , 12.03 

1.95 

1.71 

2.08 

2.15 

2:12 

2.00 

1.81 

1.78 

1.71 

1.34 

1.11 

1.32 

1.28 

1.49 

1.56 

1.34 

1.23 

.94

IS) ...

Tons per 

day

212,000 

246,000 

321,000 

541,000 

788,000 

1,280,000 

2,620,000 

4,180,000 

4,080,000 

2,970,000 

2,310,000 

2,260,000 

2,350,000 

2,220,000 

3,090,000 

3,480,000 

3,620.000 

3,560,000 

3,100,000 

3,040,000 

2,850,000 

1,930,000 

1,470,000 

1,770,000 

1, 910, 000 

2,760,000 

2,710,000 

2,170,000 

1,840,000 

1,270,000

66,950,000

July

I. 

2 -

3 

4 

5_ 

6. 

7 -

8. _ ....

10 -

11 

12 

13 

14 

15 

16 

17 

18. 

19 

20 

21 

22

23 

24.. 

25 

26 

27 

28 

29 

30 

31 

Tot

36,900 

33,500 

30,900, 

29,800 

29,100 

28,400 

27,300 

25,900 

24,600 

. 23,900 

23,000 

22,200 

21,500 

20,900 

20,000 

19,100 

19, 100 

20,000 

19,500 

18,700 

18,500 

19, 900 

19,900 

19, 100 

17,600 

16,200 

16,000 

15,300 

14,500 

13,700 

13,000

alload (to

Total load for

0.18 

.17 

.16 

.14 

.14 

.14 

1.10 

.10 

.10 .11 .11

.09 

.09 

.09 

.08 

.07 

.08 

.09 

.24 

' .27 

.27 

.19 

.16 

.28 

.24 

.23 

.19 

.13 

.14 

.22 

.25

ns) __ .

179,000' 

154,000 

133,000 

113,000 

110,000 

107,000 

73,700 

69,900 

66,400 

71,000 

68,300 

53,900 

52,200 

50,800 

43,200 

36,100 

41,300 

48,600 

126,000 

136,000 

135,000 

102,000 

86,000 

144,000 

114,000 

101,000 

82,100 

53,700 

54,800 

81,400 

87,800

2,775,000

'May

Mean 

discharge 

(second- 

(feet)

46,900 

43, 700 

41,600 

40,200 

39,400 

39,200 

38,000 

37,500 

37.500 

38,400 

41,900 

46,000 

52,900 

58,900 

62,500 

58, 800 

54,200 

49, 600 

46, 100 

44,000 

42, 400 

41,500 

42,500 

45, 700 

51, 700 

57,400 

64,900 

72,400 

79,800 

88,600 

90,500

Suspended 

sediment

Mean 

percent

0.88 

.90 

.88 

.80 

.70 

1.68 

.65 

.65 

.62 

.67 

.74 

.90 

.92 

1.08 

1.20 

1.09 

.86 

.77 

.78 

.66 

.53 

.46

:S

.58 

.55 

.96 

.93 

1.02 

. 1.21 

11.14

Tons per 

day

1,110,000 

1,060,000 

988,000 

868,000 

745,000 

720,000 

667,000 

658,000 

628,000 

695,000 

837, 000 

1, 120, 000 

1,310,000 

1,720,000 

2,020.000 

1,730,000 

1,260,000 

1,030,000 

971, 000 

784,000 

607,000 

515,000 

505,000 

691,QOO 

810,000 

852,000 

1,680,000 

1,820,000 

2,200,000 

2,890,000 

2,790,000

36,280,000

August

12, 100 

11,300 

10,900 

10,300 

9,900 

9,510 

9,510 

9,350 

9,350 

9,380 

9,090 

8,660 

8,380 

8,260 

7,770 

7,500 

7,310 

7,480 

7,410 

7,470 

7,240 

7,040 

6,540 

6,160 

6,050 

5,780 

5,310 

5,210 

4,980 

4,960 

4,820

0.13 

.11 

.09 

.08 

.11 

.09 

.12 

.10 

.14 

.14 

.13 

.30 

.18 

.11 

.18 

.18 

.09 

.06 

.06 

.04 

.05 

.04 

.06 

.31 

.10 

.07 

.49 

.35 

.33 

.09 

.07

42,500 

33,600 

26,500 

22,200 

29,400 

23,100 

30,800 

25,200 

35,300 

35,500 

31,900 

70, 100 

40,700 

24,500 

37,800 

36,400 

17,800 

12.100 

12,000 

8,070 

9,770 

7,600 

10,600 

51,600 

16,300 

10,900 

70,300 

49,200 

44,400 

12,100 

9,110

887,400

June

Mean 

discharge 

(secondfeet)

89,900 

88,400 

85,800 

83,200 

81,600 

79,800 

78,400 

77,400 

77,900 

80,000 

82,400 

81.600 

78,300 

78,500 

81,800 

81,000 

77, 800 

§900 

800 

64,700 

66,000 

66,800 

66,200 

62,800 

58,100 

63,100 

49, 100 

45,800 

42,500 

39,700

Suspended 

sediment

Mean 

percent

1.06 

.92 

.81 

.78 

.81 

.72 

1 .77 

.64 

.61 

.55 

.60 

.55 

.55 

.52 

.53 

.60 

1.52 

.45 

.46 

.42 

.43 

.48 

.46 

.40 

.35 

.29 

.32 

.27 

.26 N .24

....................

Tons per day

2,570,000 

2,200,000 

1,880,000 

1,750,000 

1,780,000 

1,550,000' 

1,630,000 

1,340,000 

1,280,000 

1,190,000 

1, 330, 000 

1,210.000 

1,160,000 

1,100,000 

1,170,000 

1,310,000 

1,090.000 

886,000 

830.000 

734,000 

766,000 

866,000 

822,000 

678,000 

549,000 

416,000 

424,000 

334,000 

298,000 

257,000

33,400,000

September

4,790 

4,920 

5,010 

4,920 

4,950 

5,080 

4,720 

4,690 

4,400 

,4,290 

4,150 

4,030 

4,150 

4,460 

5,340 

4,880 

4,610 

5,260 

5,860 

5,800 

5,660 

5,620 

5,480 

5,180 

5,050 

4,950 

4,890 

4,950 

5,000 

4,960

0.06 

.04 

1.03 

.02 

.02 

.02 

.07 

.18 

.08 

.05 

.06 

.09 

.06 

.04 

.06 

.10 

.08 

.15 

.11 

.12 

.20 

.12 

.08 

.07 

.07 

.06 

.04 

.04 

.03 

.03

7,760 

5,310 

4,060 

2,660 

2,670 

2,740 

8,920 

22,800 

9,500 

5,790 

6,720 

9,790 

6,720 

4,820 

8,650 

13,200 

9,960 

21,300 

17,400 

18,800 

30,600 

18,200 

11,800 

9,790 

9,540 

8,020 

5,280 

5,350 

4,050 

4,020

296,200

29,600,000

i Estimated. > Load for period November 16-30 estimated.
60 QUALITY OF SUBFACE WATERS, 1942

COLORADO RIVER AT BRIGHT ANGEL CREEK, NEAR GRAND CANYON,

ARIZ. Continued

Mechanical analyses of suspended sediment,

Date of collection

1941 

Oct. 7 

Oct. 12............ ......

Oct. 14... ...............

Oct. 16 . 

Oct. 17-... ........

Oct. 2</...__. .......... __

Oct. 28 . ...

Nov. 4.----..----.. _ .

Nov. 8 

Nov. 12 .. ......

Dec. 5, 13, 16, 19, 23, 26, 

SO.-...-.--..........

1942 

Jan. 2, 6, 9, 13, 16, 20, 28- 

Feb. 4, 6,, 10, 13, 17, 20, 

24, 27-..-.. .......

Mar. 3, 6, 10,13,..... 

Mar. 18.-. __ .._.___._

Mar. 25 .

Mar. 28 

Mar. 31... ..............

Apr. 3... . ........... .

Apr. 11... ..............

Apr. 14 .............

Apr. 18--.. . 

Apr. 21... ... ...

Anr 94

Apr. 28... /. 

May8 ...... .

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

May 19... ..... ....... ..

May 22..... ... .

May 26 . .. ... ......

Julys... ..

JulyS......... ... .......

July 10 .. ......

July 15 ____ ......

July 17.. _

July 22...... ..... ...... .

July 25... ...... ......

TnlT7 9O

Aug. 1. ............

A 11 ff 4.

Aug. 7 ........ .... .

Aug. 12.. ........ .

Aug. 15 ...... .....

Aug. 27. 

Sept. 1. ...

Sept. 8... ___ .........

Sept. 12....... .

Sept. 15. ...........

Sept. 18... .

Sept. 22.. 

Sept. 25. .......

Sept. 29... .... _ .......

Mean 

daily discharge 

(second - 

feet)

28,400 

17, 400 

26,700 

82,000 

52,400 

25,000 

39,200 

21,900 

17,800 

16,000

19,420

i 6, 780

i 7, 810 

'7,790 

15, ICO 

11, 100 

12,600 

13, 400 

14,500 

49,000 

40,500 

48, 100 

66,000 

61, 800 

49,800 

60,000

46,900 

39, 400 

37,500 

46, 000 

62,500 

46,100 

41, 500 

57,400 

79,800

88,400 

81, 600 

77,900 

81,600 

66,800 

66,200 

53, 100 

42,500

30,900 

25,900 

23,900 

20,000 

19,100 

19,900 

17,600 

14,500

12,100 

10,300 

9,510 

8,660 

7, 770 

7,480 

7,240 

6,050 

5,310

4,790 

4,690 

4,030 

5,340 

5,260 

5,620 

5,050 

5,000

Suspended sediment

'Mean 

daily 

concentration (percent)

3.18 

.91 

2.58 

6.36 

5.59 

1.75 

2.17 

.64 

.36 

.24

1.08

1.09

 1.07 

1.09 

.76 

.47 

.56 

.63 

.82 

3.16 

2.11 

1.71 

2.00 

1.71 

1.32 

1.34

.88 

.70 

.65 

.90 

1.20 

.78 

.46 

.55 

1.02

.92 

.81 

.61 

.55 

.46 

.46 

.29 

.26

.16 

.10 

.11 

.08 

.08 

.19 

.24 

.14

.13 

.08 

.12 

.30 

.18 

.06 

.05 

.10 

.49

.06 

.18 

.09 

.06 

.15 

.12 

.07 

.03

TODS per 

day

2, 440, 000 

428,000 

1, 860, 000 

14,100,000 

7, 910, 000 

1, 180, COO 

2, 300, 000 

378, 000 

173,000 

104, 000

120,600

110,500

i 14, 900 

' 19, 400 

310, 000 

141, 000 

191, 000 

228,000 

321,000 

4, 180, 000 

2, 310, 000 

2, 220, 010 

3, 560, 000 

2, 850, 000 

1, 770, 000 

2,170,000

1, 110, 000 

745, 000 

658,000 

1, 120, 000 

2, 020, 000 

971, 000 

515, 000 

852, 000 

2, 200, 000

2, 200, 000 

1, 780, 000 

1, 280, 000 

1, 210, 000 

830, 000 

822, 000 

416, 000 

298,000

133,000 

69,900 

71,000 

43, 200 

41,300 

102, 000 

114, 000 

54,800

42,500 

22,200 

30,800 

70,100 

37,800 

12,100 

9,770 

16, 300 

*70, 300

7,760 

22, 800 

9,790 

8,650 

21,300 

18,200 

9,540 

4,050

Percent in indicated size 'range

<0.005 

mm.

1.4 

1.4 

1.2 

1.1 

1.1 

1.4 

1.6 

1.3 

3.3 

6.5

11.1

13.0

8.6 

4.2

 2.2 

1.3 

1.5 

1.0 

.1 

.4 

.5 

.5 

.6 

1.5 

1.1

1.7 

1.9 

2.4 

1.3 

2.3 

2.4 

4.9 

3.8 

1.6

1.1 

2.0 

2.8 

2.8 

2.5 

2.9 

5.2 

5.4

8.2 

10.3 

11.1 

15.0 

18.0 

9.7 

8.8 

13.9

14.9

21.8 

14.5 

5.5 

10.0 

18.6 

22.3 

12.3 

3.1

24.4 

6.1 

13.0 

18.9 

9.4 

10.3 

20.8 

38.4

0.005- 

0.020 

mm.

57.3 

62.1 

42.0 

52.1 

44.1 

63.6 

51.0 

43.8 

43.5 

54.1

47.9

56.9

57.5 

43.0 

50.9 

64.3 

53.7 

56.9 

57.7 

19.5 

39.5 

35.4 

22.2 

19.2 

18.2 

24.2

21.5 

26.0 

25.1 

13.1 

12.6 

19.3 

23.0 

12.9 

12.7

. 8.9 

10.4 

10.1 

9.4 

7.9 

8.3 

10.6 

10.1

15.1 

19.8 

20.5 

21.2 

19.1 

45.1 

65.5 

60.2

62.7 

57.6 

65.6 

78.9 

78.0 

73.6 

67.7 

78.7 

89.4

68.0 

88.0 

79.5 

71.2 

84.2 

81.5 

72.6 

52.4

0.020- 

0.050 

mm.

16.1 

13.8 

17.8 

20.2 

18.4 

17.9 

14.2 

17.0 

13.0 

25.6

20.1

16.1

18.8 

21.8 

13.8 

10.3 

11.3 

7.3 

9.3 

9.2 

11.2 

14.1 

10.4 

10.9 

11.6 

, 9.9

11.0 

10.4 

9.7 

8.2 

8.5 

10.9 

14.1 

11.4 

, 9- 2 

7.3 

7.6 

10.2 

9.0 

9.8 

10.1 

13.3 

13.9

19.4 

21.3 

22.0 

19.9 

19.1 

14.9 

10.2 

13.3

11.4 

12.3 

19.9 

15.6 

12.0 

7.8 

10.0 

9.0 

7.5

7.6 

5.9 

7.5 

9.9 

6.4 

8.2 

6.6 

9.2

0.050- 

0.074 

mm.

12.0 

11.5 

19.4 

15.3 

13.5 

9.7 

16.0 

15.7 

12.6 

10.5

11. S

7.6

8.7 

16.7 

19.8 

10.7 

11.2 

8.3 

10.0 

9.0 

10.1 

11.2 

6.9 

12.2 

12. U 

15.5

19.7 

23.5 

23.2 

22.8 

19.4 

20.4 

26.7 

25.2 

16.5

11.6 

14.5 

16.6 

12.9 

15.5 

18.4 

19.2 

21.6

23.2 22.5' 

24.5 

20.2 

26.2 

17.5 

. 10.2 

9.0 

8.2 

8.3

0.074- 

0.149 

mm.

9.9 

10.1 

16.7 

10.4 

15.7 

6.0 

13.3 

18.1 

18.8 

3.0

7.4

4.7

5.1 

J1.3 

12.7 

7.4 

17.8 

20.6 

18.7 

42.6 

21.8 

21.9 

28.7 

. 24. 5 

29.9 

19.6

17.9 

22.9 

25.6 

33.7 

29.8 

26.3 

23.4 

32.0 

29.0

29.9 

30.3 

31.8 

29.1 

30.4 

29.2 

22.9 

30.8

22.1 

17.0 

16.4 

15.9 

17.6 

12.8 

5.3 

3.6

2.8

>0.149 

mm.

3.3 

1.1 

2.9 

.9 

7,2 

1.4 

3.9 

4.1 

8.8 

.3

1.7

1.7

1.3

3.0 

2.8 

5.1 

4.7 

5.4 

3.3 

19.6 

17.0 

16.9 

31.3 

32.6 

26.8 

29.7

28.2 

15.3 

14.0 

20.9 

27.4 

20.7 

7.9 

14.7 

31.0

41.2

35.2 

28.5 

36.8 

33.9 

31.1 

28.8 

18.2

12.0 

9.1

5.5 

7.8

' Mean for days on which samples were collected for mechanical analysis.
SUSPENDED SEDIMENT LOABS AND MECHANICAL ANALYSES 61

CtttEEN AT GREEN RIVER, UTAH

[Daily samples of suspended sediment collected from cableway at gaging station, 1 mile south of town of 

Green River and 22 miles upstream from San Rafael River]

Daily samples of suspended sediment loads,

- . - October

Day

l.__i ....

2 __ ....

3. .

4 ...

5.. ...

6...__. 

7.. 8.. :.. .

9 __.

10 

11.......

I* .

13-. 

14.- 

15.......

16...;... IT..,. .

18-. 

19.......

20

21.. -4...

22

23.. 

24 

25.. T .

26. 

27.. 

28 

29 

30, _ ...

31 

Tot

, Mean 

discharge 

(secondfeet)

2,810 

2,770 

2,990 

3,240 

, 3,390

3,360 

3,640 

3,930 

4,230 

4,410 

4,530 

4,260 

4,590 

6,940 

5,580 

6,930 

5,610 

5,340 

6,280 

6,360 

6,200 

7,410 

6,760 

5,790 

6,640 

5,400 

5,130 

5,510 

6,240 

-6,480 

" 7,500

al load (to

Suspended 

sediment

Mean 

percent

0.14 

.14 

.19 

. .28 

- .17 

.17 

.14 

.15 

.20 

.25 

.39 

.31 

.64 

1.80 

.62 

.92 

1.45 

.62 

.55 

.40 

.67 

.79 

.87 

.91 

1.91 

.66 

.52 

.29 

1.20 

.68 

.64

Tons per 

day

10,^00 

10,500 

15,300 

24,500 

15,600 

15,400 

13,800 

15,900 

22,800 

29,800 

47,700 

35,700 

79,300 

337,000 

93,400 

172,000 

220,000 

89,400 

93,300 

68,700 

112,000 

158,000 

159,000 

142,000 

342,000 

96,200 

72,000 

43,100 

202,000 

^119,000

130,000

2,986,000

January

1.. ......

2....... .

3.. ...

4; _ ...

6. .

6-1 ..

7.. ...

, 8.. ......

»-.. _

10 

11 .

12. 

13. .

14. 

15.. ..

16. ......

17 ___ .

18 

19 

20 

21 

22 

23... .

24'.......

25.... 

26.. 

27.......

28 

29. __ ... 

30. 

' oPjfo

1,700 

1,500. 

1,300 

1,100 

878 

720 

808 

866 

950 

 - 1,200 

1,270 

1,400 

1,790 

2,160 

2,280 

2,440 

2,360 

2,260 

2,220 

2,120 

2,160 

2,160 

2,040 

2,140 

2,180 

2,220 

2,380 

-2,530 

2,550 

2,420 

_ 4.-2.420

al load (to

0.04 

.04 

.03 

.05 

.03 

.03 

.03 

.03 

.04 

.02 

.05 

.06 

.06 

.08 

.09 

.08 

.04 

.04 

.06 

.07 

.08 

.07 

.06 

.03 

.05 

.02 

.09 

.05 

.16 

.07 

.---. -.04

ns) ......

1,840 

1,620 

1,050 

1,480 

711 

583 

654 

701 

1,030 

648 

1,710 

2,270 

2,900 

4,670 

5,540 

5,270 

2,550 

2,440 

3,600 

4,010 

4,670 

4,080 

3,300 

1,730 

2,940 

1,200 

5,780 

3,420 

11,000

4,570

_-. 2,610

90,580

November

Mean 

discharge 

(second* 

(feet)

6,010 

5,270 

4,900 

4,900 

4,940 

4,840 

4,620 

4,500 

4,470 

4,440 

4,440 

4,350 

4,260 

4,120 

4,010 

3,900 

3,870 

3,820 

3,820 

4,010 

3,930 

3,740 

3,640 

3,510 

3,130 

2,880 

2,860 

2,680 

2,510 

2,490

Suspended 

sediment

Mean 

percent

0.68 

.47 

.35 

.20 

.21 

.18 

.15 

- .14 

.13 

.11 

.12 

.16 

.19 

.16 

.16 

.16 

.17 

.12 

.10 

.08 

.08 

.06 

.06 

.06 

.05 

.05 

.04 

.05 

.05 

.04

Tons per 

day

110,000 

66,900 

46,300 

26,500 

28,000 

23,500 

18,700 

17,000 

15,700 

13,200 

14,400 

18,800 

21,900 

17,800 

17,300 

16,800 

17,800 

12,400 

10,300 

8,660 

8,490 

6,060 

5,900 

5,690 

4,230 

3,890 

3,090 

3,620 

3,390 

2,690

569,000

February

2,420 

2,380 

2,470 

2,380 

2,360 

2,300 

2,280 

2,420 

2,380 

2,380 

2,380 

2,360 

2,320 

2,400 

2,420 

2,300 

2,240 

2,260 

2,300 

2,120 

1,920 

1,710 

1,750 

1,660 

1,830 

1,980 

2,000 

2,060

----r __ -.

0.03 

.03 

.03 

.02 

.03 

.03 

.03 

.04 

.03 

. .03 

.03 

.02 

.02

. :8

.02 

.02 

.02 

.02 

.01 

.01 

.02 

.02 

.01 

.01 

.02 

.01 

.03

.........

1,960 

1,930 

2,000 

1,290 

1,910 

'1,860 

1,850 

2,610 

1,930 

1,930 

1,930 

1,270 

1,250 

1,300 

653 

1,240 

1,210 

1,220 

1,240 

572 

518 

923 

945 

448 

494 

1,070 

540 

1,670

 . 

37,760

December

Mean 

discharge 

(secondfeet)

^,700 

2,760 

2,900 

. 3, 170 

3,270 

3,320 

3,220 

 3,010 

3,040 

2,900 

2,590 

2,420 

2,680 

2,810 

2,990 

3,080 

3,150 

3,200 

3,080 

2,880 

2,680 

2,680 

2,750 

2,470 

2,590 

. 2,490 

2,510 

1,980 

1,790 

1,860 

1,866

Suspended sediment

Mean 

percent

0.04 

.04 

.05 

' .05 

.«6 

.08 

.06 

* .05 

.04 

.04 

.04 

.05 

.05 

.04 

.04 

.04 

.06 

.05 

.05 

.06 

.03 

.03 

.03 

.02 

.02 

.03 

.03 

.02 

.03 

.03 

.04

Tons per 

day

2,920 

2,970 

3,920 

4,280 

5,300 

7,170 

6,220 

4,060 

3,280 

3,130 

2,800 

3,270 

3,620 

3,030 

3,230 

3,330 

5,100 

4,520 

4,160 

4,670 

2,170 

2,170 

2,230 

1,330 

1,400 

2,020 

2,030 

1,070 

1,450 

1,510 

2,010

99,170

March

2,060 

2,060 

2,140 

2,180 

2,300 

2,420 

2,440 

2,570 

2,790 

2,700 

2,880 

3,240 

3,640 

4,230 

5,130 

5,860 

7,320 

7,280 

6,560 

5,650 

5,040 

4,410 

3,870 

3,930 

6,040 

5,760 

6,010 

6,720 

6,050 

5,580 

5,400

0.02 

.02 

.02 

.02 

.02 

.03 

.04 

.04 

.06 

.07 

. .06 

 16 

,18 

.26 

.33 

.42 

.65 

.50 

.37 

.34 

.28 

.24 

.20 

.19 

.39 

.60 

.98 

.69 

.58 

, .63 

.62

1,110 

1,110 

1,160 

1,180 

1,240 

1,960 

2,640 

2,780 

4,520 

5,100 

4,670 

14,000 

17,700 

29,700 

45,700 

66,500 

128,000 

98,300 

65,500 

51,900 

38,100. 

28,600 

20,900 

20,200 

53,100 

93,300 

159,000 

125,000 

94,700 

94,000 

90,400

1,363,000

5&1806 14 6
QU&UTY OF 1-942

April

Day

I.... 

2.. ......

.3

4.. ...

6.

7

8. 

9..-.---

10 . 

11... 

12.. 

14...- 

18... .

16 

17. .

18. 

10... 

21... 

28...- 

24.... 

26. ,

36 

28 '' 

39

30... 

31 ..

Mean 

.discbacge 

(secondfeet)

5,860

'%560

13,100

14,800 

16,000 

14,900 

14,300 

14,300

13, 100 

12,900 

13,700 

15,600 

17,200

18,000 

18,600 

19,700 

19,000 

17,300

17,000 

15,300 

13,400 

13,500 

14,900

16,600 

16,800 

15,500 

15,000 

14,300

Total toad (toi

sediment

Mean 

percent

^ .*! 

.-04 

1.61 

1.99

2.32

Iy63 

L38

!92 

1.00 i;oe

.99

!"88 

.'78 

. .71

.61

.58 

.55

',-58 

.66

:so

as).. _ ..

Tons per 

day

83^300. 

96,500

415, WO 

704,000

f

,000 

,000 

,000 

,<000 

,,000

876,000

421,000 

482,000

481*000 

442.000 48»,m

^2*000

380,000 

240,000 

109,'000 ie3,ooo

983,000

272^000 

.243,'000 

219,000 

193,000

12,fTOi.OOO

July

1 

2 .......

3.. .

5.I

6-. 

7 

8 

9 ...

10. .

12... .

13 

14 

18. -

16.,., 

17 

18 

10,. 

20 ..

22 

28 

24 

26.-- 

27 

28.. 

29,.. _ ..

30.,., 

31,. 

Tofc

, IQrOOO

9,880 

9*6*0 

8,760 

8,090

7,540 

,6,970 

6,520 

.6,280 

'6,320

 6,360 

6,400 

6,640

6,850 

 6,720

6,400 

6,320 

6,760 

6,760 

6,720

6,560 

6,360 

7,020 

7,140 

6,560

6,010 

5,540 

6,040 

,4, 720 

4,260 

4,010

Eil load (toe

0.11 

.12 

.11 

.10 

.11

.M 

.09 

.08

:<os

. J06

.06 

.08 

.06 

.08 

.06

.06 

.06 

.16 

.23 

.18

.17 

.32 

.46 

.22 

.13

.40 

.31 

.14 

.09 

.08 

.11

B)L..... .

29,700 

32,000 

28,c-,00 

23,700 

24,000

16,300 

18,900 

14, 100

ID! 200

10,300 

18,800 

10,800 

14,800 

10,900

10,400 

10,200 

29,200 

42,000 

32,700

30,100 

65,000 

87,200 

42,400 

23,000

64,900 

46,400 

19,100 

11,600 

9,200 

11,900

794,600

 i**y

Mean

(second- (feet)

13,300 

12,900 

12; 000 

llj*00 

11,400

11,100 

10,800 

10,400 

10,700 

11,200

11,800 

13,800 

16,100 

17,800 

18,700

17,200 

15,400 

14,200 

13,500 

13,100

12,700 

12,400 

12,700 

13,600 

15,900

19,200 

22,200 

26,100 

28,800 

30,600 

32,000

sediment

Mean 

percent

.48

.'40 

.36

.42 

.36 

.32 

.36 

.37

.48 

.66 

.70 

.76 

.71

.68 

.55 

.48 

.43 

.40

.36 

.35 

.41 

.45 

.64

.67 

.66 

.62 

.56 

.56 

,50

Tons per 

d^

194,000 

167,000

127,000 

111,000

.12$, 000

(104-000 

.U3.DOO

3*63,000 

£46,000

sss^ooo

-141^ 000

H3,«90 

ItT-.tKW twi,«oo

a*7k,floo

&£fKK) AfS,m>

S2i'000

TpCMOi-OW s ..

August

3,390 

3,660 

3,540 

3,360 

3,270

3,220 

'3,200 

3,100 

2,050 

2,840

2,750 

2,840 

2,700 

2,570 

2,440

2,360 

2,280

.2, 000^

1,92ft 

1,880 

1,830 

1,770 

 1,710

1,750 

1,830 

1,810 

1,830 

1,640 

1,590

0.09 

.09 

.05 

.04 

.04

.03 

.06 

.04 

.07 

.04

.05 

.08 

.08 

.06 

.05

,08 

 .04 

.03 

.03 

.03

.02 

.02 

.01 

.01 

.01

.01 

.17 

.18 

.16 

.10 

.10

9,210 

8,890 

4,780 

3,630 

3,630

2,610 

6,180 

.3;,350 

6,580 

3,070

3,710 

«,130 

6,830 

4,160 

3,290

,6,100 

2,460 

1,770 

1,670 

1^620

1,340 

1..020 

494 

478 

462

472 

9,400 

8,-SOO 7; ooo

4,430 

429

-Ha-soo

^

Mean

(secondfeet)

31^000 

29,100

25^800

25,500 

B4.300

 B4,600 

,35,600 

26,100

'85,800 

£5,800 

' $6,400 

-86,400 

26,300

86,100

§2,900 

20,300 

18,800 

18,300

lSi-300 

17,700 

*6,300 

W,700 

-m,900

12,900 

. 12,000 

 ll,,^ 

10,500 

.10,100

Suspended 

sediment

Mean 

percent

S

'

.-44 

.42

.41 

,35 

.38 

.34 

.32

.32 

.33 

;'29 

.28 

.33

^29 

..27 

.36

!24 ."23

.21 

.18 

.15 

.13 

.12

Tons per day

3HOOO 

343,000 

314,000 

203,000

282,000

252*009 

234,009

223,099 

207^088 200, ee*

218, OW 204, m

159, OB) 

137, Ow 

128,060

119,000 

115,060 

101,480

73, 108 

32,706

i5,6l8,«(»

September

1,560 

1,840 

1,620 

1,480

1,470 

1,430 

1,420 

1,380 

1,380

1,470 

1,640 

1,500 

1,480 

1,620

1,640 

" 1, 570 

1,500 

1,470 

1,430

1,500 

1,570 

1,610 

1,620 

1,620

1,590 

1,550 

1,540 

1,540 

1,550

O4& 

.07 

.07 

.04 

.03

.06 

.05 

.04 

.03 

.03

.04 

.48 

.14 

.07 

.04

.03 

.63 

.83 

.05 

.05

.03 

.02 

,03 

.-03 

..03

.03 

.02 

.02 

.02 

.02

2,930 

2,910 

1,«40 

1,200

2,380 

1,030 

1,530 

1,120 

1, 120

1,690 21.300' 

5.6701 

2, gOO 

1,760

1,330, 

1,270

1,220 

848 

1,300 

1,310 

1,319

1,200 

83? 

832 

833 

S3?

70,739

9total load to year....__._.......__.... __._.___... .... . tons:. $U>§0,000
SUSPENDED* gffiJIM3&y'rLOADS' AWD ANALYSES $$>

[Daily samples of suspended sediment collected from highway Bridge, 2,000 feet downstream from gaging 

station and 22 Miles southwest of Bluff] - _'

Daily samples of suspended si&iment loads,

\

Day

I

2..... 

S __ ...

4^ 

5,__. _ . 6. _ ...

7....... 8,, _ _ .;

9....... Iff... ..

11... . i*

131.. _

14v......

15....... is;. ..._. _ m.., 18v .,.,. 19:...... 20;.... 

21,....,..

2Z« .u 

2&., ..

24* 

25.......

2&.. ...

27..... 

28^- 

2S&__. 

30.......

31.. .t

T»t

October

Melan 

discharge

(second*

feet)

8,190 

4,770 

6,130 

16,600 

16,600 

9,880 

6,660 

5,650 

4,940 

4,670 

4,340 

4,040 

11,300 

42,500 

36,200 

13,600 

9,110 

7,440 

6,600 

6,060 

9,980 

9.610 

10,200 

§,970 

9,320 

17,900 

1%700 

&990 

7;720 

8,610 

7,000

alload (tc

 Suspended sediment

Mean 

peWBOt

4.47 

1..82 

1.81 

10.3 

6.92 

3.42 

1.60 

1.05 

.82 

.73 

.61 

.67 

4.17 

10.5 

7.29 

3.04 

1.41 

.83 

.73 

.66 

3.01 

2.89 

1.83 

1.09 

1.82 

5.05 

2.66 

1.19 

.86 

1.36 

1.14

rn&bfi'fi£il> **5?"C* 

&$,

988,000 

234*000 

30D.OBO 

4,340,000 3,a«£aoo

liol-flQQ w71,500

1,270,000 MM

12,,OaU»0

5,9#>;i»0 i,i2o;Soo

34S,W 

1§,WO 

130,000 

124,000 

811,006

SQL QM> 2&«o

458/000 

2,440,000 

Ma 000 

289,090 

17AOB8 

33=^086 

21^,000

38,8&e>Q04

January

I-.- *.

2.......

3.......

4...... .

5.......

6.. 

7.......

8.......

9.......

10. 

11.......

12.......

13.......

14.......

15.. ...4 

16.. ....I

17.......

IS.......

19.......

20.......

21. ..... .,

22.......

23.......

24.,... i 

25.. ...4 

26.. ...u

27.......

28.......

29.......

80.......

31........

1,990 

1,740 

1,500 

800 

400 

193 

157 

296 

494 

706 

1,130 

1,530 

1,450 

1,630 

1,540 

1,580 

1,500 

1,600 

1,450 

1,400 

1,460 

1,400 

1,400 

1,610 

1,650 

1,720 

1,790 

1,700 

1,810 

1,670 

1,590

0.26 

.29 

 .21 

.33 

.06 

.02 

.01 

.07 

.09 

.11 

.23 

.10 

.23 

.23 

. .19 

.23 

.21 

.21 

.19 

.18 

.23 

.25 

.23 

.33 

.35 

.37 

.35 

.36 

.48 

.35 

.34

Total load (tons) 

14,000 

13,600 

8,600 

7,130 

648 

104 

42 

650 

1,200 

2,100 

7,020 

7,850 

0,000 

10,100 7,900' 

0,810 

. 8,500 

0,070 

7,440 

6,800 

0,070 

9,450 

8,690 

14,300 

15,600 

17,200 

16,900 

16,500 

23,500 

15,800 

14,600

293,000

November

Mean 

discharge 

(fiecond- 

(feet)

6,040 

5,510 

4,850 

4,610 

4,160 

4,050 

3,900 

3,870 

3,690 

3,540 

3,400 

3,110 

3,120 

3,130 

3,110 

2,860 

2,700 

2,910 

2,850 

2,010 

2,810 

2,500 

2,270 

2,190 

2,080 

1,040 

1,060 

2,060 

2,100 

2,070

Suspended sediment

Mean 

percent

0.80 

.67 

.62 

.61 

.57 

.51 

.44 

.51 

.44 

.43 

.43 

.35 

.38 

.42 

.47 

.47 

.36 

.48 

.55 

.38 

.42 

.38 

.25 

.32 

.32 

- .28 

.28 

.32 

.34 

.36

Tansrpsr dayISO, 000 

99/700 

81.2dO 

7^960 

64,000 

65,800 

46,300

4l'lOO 

39,'jSao 

29,400 

32,000 

36,500 

36,580 

3$, 309 

26,201) 

37,706 

42,300

26^ 700

is; ooo

14,7«a 

14,900 

17,806 

19,306 

30,106

1,23^006

February

1,480 

1,420 

1,400 

1,380 

1,390 

1,370 

1,430 

1,370 

1,400 

1,450 

, 1,400 

1,270 

1,220 

1,280 

' 1,250, 

1,180 

1,100 

064 

029 

859 

824 

1,020 

1.2UO 

1,200 

1,110 

1,010 

1,080 

1,140

 -

0.34 

.29 

.23 

.25 

.23 

.24 

.23 

.24 

.26 

.26 

.22 

.18 

.20 

.21 

1 .20 

' .23 

.21 

.16 

.07 

.13 

.17 

"* .20 

.22 

.24 

.20 

.18 

.18 

.15

.........

13,600 

11,100 

8,690 

0,320 

8,630 

8,880 

8,880 

8,880 

9,830 

10,200 

8,320 

6,170 

6,590 

7,260 

6,750 

7,330 

6,240 

4,160 

1,760 

3,020 

3,780 

5,510 

7,190 

^7,780 

5,990 

4,910 

5,250 

4,620

200,600

Deqejo^bsr

Mean 

discharge 

(sfteondfaet)

2,000 

1.050 

1,010 

1,860 

1,510 

1,810 

1,680 

1,600 

1,*710 

'1,810 

. 1,930 

1,830 

1,830 

1,870 

1,760 

1,710 

1,650 

1,500 

1,560 

1,560 

1,520 

1,400 

1,500 

1,560 

1,460 

1,510 

1 460 

1,400 

1,500 Xaoo

2,050

Suspended 

sediment

&*an 

petcent

0.30 

.29 

.30

.as

.26 

.26 

.27 

.23 

.24

.ae

.3S 

.23 

.25 

. .31 

 .2$ 

.23

 :S

.18 

.18 

.-.$6 

. .16

. ..»

. :» 

' $

.28 

. .25

Tons penday

16,200 

15,30a 15,500- 

16, 100- 

12, 700, 

12,706 

12,200 

9,940-

11, 10» '

ia4od

15,70ft 13, m

10,600v 

8,46fr 

7,300> 7,580' 

7,580. 6,570>' 

6,440?.

lO^loU'" 

7,880 

7,340^.. 

8,670-'" 5,290;' 

8,50Cki 

13,60Ch 

13,800i

344,000

March

1,170 

1,120 

1,080 

1,060 

1,140 

1,350 

1,550 

1,700 

1,340 

1,130 

1,340 

3,040 

2,890 

3,260 

3,810 

3,330 

2,340 

1,810 

1,630 

2,150 

1,960 

1,830 

1,650 

2,390 

3,340 

3,040 

2,270 

1,960 

1,750 

2,090 

2,980

0.24 

.25 

.18 

.18 

.23 

.35 

.50 

.63 

.60 

.43 

.70 

1.26 

1.22 

1.57 

1.81 

1.70 

1.40 

.91 

.67 

1.12 

.75 

.72 

.64 

.98 

1.53 

1.69 

1.48 

1.01 

.74 

.94 

1.86

7,680 

7,560 

5,250 

5,150 

7,080 

12,800 

20,900 

30,400 

21,700 

13,100 

25,300 

103,000 

95,200 

138,000 

166,000 

153,000 

88,500 

44,500 

29,500 

65,000 

39,700 

,35,600 

28,500 

63,200 

138,000 

139,000 

90,700 

53,400 

35,000 

53,000 

150,000

1,866,000
64 QUALITY OP SURFACE WATERS, 1942

SAN JUAN RIVER NEAR BLUFF, UTAH Continued

April

Day

1. 

2.. ......

3.. ...

4... .....

5. ....

6. .

7........

8.. ......

9........

10. 

11.. 

42 

13.......

14.- ..

15. 

16.. 

17. 

18.. 

19 

20. 

21

22_ 

23 

24. 

26

26. 

27.......

28 

29., 

30.. 

31. 

Mean 

discharge 

(secondfeet)

4,060 

5,010 

6,260 

7,250 

8,610

11,000 

14,400 

10,000 

11, 100

8,810

9,630 

10,200 

12,500 

13,400 

11,700

11,900 

11,400 

10,400 

10,800 

9,320

7,400 

7,210 

8,750 

14,400 

14,800

14,600 

11,600 

9,480 

8,970 

8,530

Total load (ton

Suspended 

sediment

Mean 

percent

2.98* 

2.60 

4.07 

3.80 

3.58

2.66 

3.21 

1.83 

2.00 

1.75

1.40 

1.60 

1.97 

2.00 

2.28

2.15 

1.54 

1.38 

1.51 

1.37

1.02 

1.02 

1.55 

2.15 

1.97

1.58 

1.35 

1.30 

. 1.14 

1.33

<i1

Tons per 

day

317,000 

352,000 

688,000 

744,000 

832,000

760,000 

1,250,000 

494,000 

599,000 

416,000

364,000 

441,000 

665,000 

724,000 

720,000

691,000 

474,000 

388,000 

440,000 

345,000

204,000 

199,000 

366,000 

836,000 

787,000

623,000 

423,000 

333,000 

276,000 

306,000

16,060,000

May

Mean 

discharge 

(second- 

(feet)

7,570 

7,550 

6,690 

6,650 

5,720

5,380 

5,540 

5,770 

6,370 

6,800

7,670 

8,850 

9,150 

8,630 

7,040

5,990 

5,660 

5,730 

5,830 

5,600

5,630 

6,370 

7,880 

8,650 

10,200

10,900 

11,400 

12,300 

12,200 

11,000 

10,800

Suspended 

sediment

Mean 

percent

1.42 

.93 

1.26 

.89 

.63

.56 

.69 

.72 

.65 

.76

.76 

.98 

.86 

.85 

.56

.51 

.45 

.52 

.60 

.54

.55 

.66 

.66 

.72 

.70

.84 

.73 

.85 

.76

.88 

.85

Tons per 

day

290,000 

190,000 

228,000 

160,000 

97,300

81,300 

103,000 

112,000 

112,000 

140,000

157,000 

234,000 

212,000 

198,000 

106,000

82,500 

68,800 

80,400 

94,400 

81,600,

83,600 

114,000 j 140,000 

168,000 

193,000

247,000 ! 

225,000 

282,000 

250,000 

261,000 

248,000

5,040,000 j

June

Mean 

discharge 

(secondfeet)

10,300 

9,940 

10,200 

10,500 

10,500

9,880 

9,780 

10,400 

10,500 

10,600

9,920 

9,170 

10,200 

10,300 

9,760

9,320 

8,210 

8,510 

9,420 

9,940

10,200 

9,520 

8,430 

7,860 

7,290

6,930 

6,280 

5,580 

5,140 

4,260

Suspended 

sediment ,

Mean 

percent

0.84 

.89 

.69 

.76 

.61

.67 

.54 

.70 

.66 

.53

.68 

.54 

.69 

.53 

.66

.57 

.50 

.43 

.55 

.76

.56 

.58 

.60 

.45 

.39

.46 

.39 

.34 

.29 

.29

 .

Tons per 

day

234,000 

239,000 

190,000 

215,000 

173.000

179,000 

143,000 

197,000 

187,000 

152,000

182.000 

134,000 

190,000 

147,000 

174,000

143,000 

111,000 

98,800 

140,000 

204,000

154,000 

149,000 

137,000 

95,500 

76,800

86,100 

66,100 

51,200 

40,200 

33,400

4,322,000
SUSPENDED- SEDIMENT. LOADS AND MECHANJCAIi ANALYSES 05 

SAN- JUAN mVBB NEAR, KLUFF, UTAH Continued

Jaly

Day

1..-..L

2.... .

3........

4. ....

5_. ......

6........

7........

8..

9........

10.......

11.-... ..

12.......

13.......

14^,....

15.......

16.......

17.......

18.......

19.......

20.-. .

21..:.-..

22.......

23.......

24.....

25......

26....... 27...:...

28..;:...

29.......

30.......

31

Tot

Mean discharge (secondfeet)

3,870 

3,800 

3,720 

3,720 

3,610

3,690 

3,310 

3,360 

3,270 

3,130

3,060 

2,730 

2,480 

2,360 

2,320

2,200 

2,100 

2,950 

, 2,180 

2,460

2,170 

1,870 

1,570 

1.460 

1,470

1,360 

1,290 

1,200 

L120 

1,060 

1,010

Ed load (toe

Suspended 

sediment

Mean 

percent

0.26 

.27 

.34 

.28 

.28

.23 

.19 

.43 

.37 

.31

.27 

.25 

.21 

.23

x .24

.21 

.61 

.92 

.40 

.40

.33 

.23

.19 

.12

.18

.14 

.18 

.15 

.13 

.15 

.10

0\

Tons per

day

27,200 

27,700 

34,100 

28,100 

27,300

22,300 

17,000 

39,000 

32,700 

26,200

22,300 

18,400 

14,100 

14,700 

15,000

12,600 

34,600 

73,300 

23,500 

26,600

19,300 

11,600 

8,050 

4,700 

7,140

5,140 

6,270 

4,860 

3,930 

4,290 

2,730

614,^00

August

Mean 

discharge 

. (second- 

(feet)

922 

915 

908 

971 

1,200

1,120 

1,100 

978 

957 

999

1,060 

1,010 

1,030

880 

971

838 

764 

738 

706 

662

620 

575 

537 

542 

609

732 

668 

662 

644 

656 

609

Suspended 

sediment

Mean 

percent

0.09 

.14 

.08 

.10 

.18

.25 

.11 

.14 

.11 

.15

.38 

.17 

.17 

.28 

.13

.08 

.15 

.10 

.08 

.11

.08 

.08 

.08 

'ilO ».10

.26 

.17 

.09 

.10 

.12 

.09

Tons per 

day

2,240 

3,460

5^ 830

7,660 

3,270 

3,700 

2,840 

4,050

10,900 

4,640 

4,730 

6,650 

3,410

1,810 

3,090 

1,990 

1,520 

1,970

1,340 

1,240 

1,200 

1,520 

1,640

5,140 

2,890 

1,610 

1,740 

2,130 

1,480

100,200

September

Mean discharge feeeondfeet)

609 

681 

553 

537 

581

484 

448 

453 

443 

438

768 

' 674 

598 

693 

1,370

1,170 

964 

873 

' 752 

700

626 

' 609 

592

542 

542

526 

500 

500 

542 

510

Suspended 

sediment

Mean 

percent

0.11 

.11 

.09 

.10 

,13

.10 

.10 

.10 

.07 

.09

1.66 

.61 

.24 

.24 

.33

.29 

.16 

.16 

.15 

.13

.13 

.09 

.13 

.12 

.15

.13 

.08 

.10 

.16 

.06

 

.Tons per 

day

1,810- 

1,790 

1,340 

1,450 

2,040'

1,310 

1,210 

1,220 

837 

1,060

* 34,<WO 

11,100 

3,880 

4,490 

12,200

9,160 

4,160 

3,770 

3,060 

2,460

2,200 

1,480 

2,080 1,760' 

2,200

1,850 

1,080 

1,350 

2,340 

826

119,600

Total load for year____... ......_... ...-..... . - tons.. 69,080,000

> Estimated.
Mechanical analyses of suspended sediment, 1941 

Datetrf collection

«# Osfc.10 

Oct. 21 

O«t- 25 28

N«w. 1 __ 

Nev. 4, 7, 10, M -----

NOT. 17, 21, 24, 28 

D««M» 5, 8, 12,15,19,23, 

2? 30

J»4*

Jan. 2, 5, 9, 13, 16, 19, 23, 

22,30.- 

Fefc 2,6,9,1M6,18,21,

*u. 07

Mar. 2, 6 

Mw.9.. 

MSJ.13.-.. .............

Man, 16,20.. -

Mar. 23 .... ..... .....

Mar. 27 ... .... - Mar. 31 . ..: 

ApjK.3.. _. _.__.

APR 6, 10 ... ..

ApBi5,22, 29t ...

May 2..--- .......

May 6.. ........ - Mayfl^ 

May 15, 16,20,23,29 

Jonel7, 20, 24, 27 Julyl 

July?.. ......... .

JulyS 

July 12- -----

July 15 ... -

July 18 ------

July 23 -- ......

July 26 --- . .....

July 29 ------

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

Aug. 7 --- 

A 11 Or Q

Aug. 12 -

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

A ii or *X7

Aug. 29 .... . -------

Sept. 4 . ..

Sept. 7 ... .... -

Sept. 12 --------

Sept. 16.. ---------

Stant 10

Sept. 27 ---------

Mean 

dAily discharge 

(secondfeet)

4,670 

9,980 

19,160

6,040 

J3.790 

12,440

11,700

11,330

 1,180

11,240 

1,340 

2,890 

« 2, 740 

1.650 

2,270 

2,980

6,260 

19,900 

19,290

7,55ft 

5,380 6,370' 

17,740:

110,300 

10,200 

18,070 

3,870 

3,720 

3,360 

2,730 

2,320 

2,950 

1,570 

1,360 

1,120

922 

1,100 

957 

1,010 

738 

620 

668 

644

609 

537 

448 

674 

1,170 

752 

609 

500

Suspended sedfeneat

Mean 

daily 

ceHpen 

tration 

(per-, 

cent)

0.73 

3.01 

11.50

.80 

i.48 i.36

i.24

1.22

1.22

1.30 

.60 

1.22 

i 1.41 

.64 

1.48 

1.86

4.07 

12.16 

U.48

.93 

.56 

.65 i.61

1.72 

69 

1.52 

.26 

.34 

.43 

.25 

.24 

.92 

.19 

.14 

.13

.09 

.11 

.11 

.17 

.10 

.08 

.16 

.10

.11 

.10 

.10 

.61 

.29 

.15 

.09 

.08

Tons per 

day

92,000 

811,000 

1374,000

130,000 

149,700 

i 23, 700

1 11, 100

19,230

17,170

110,200 

21, 700 

95,200 

1109,000 

28,500 

90, 700 

150,000

688,000 

1588,000 

1398,000

190,000 

81,300 

112,000 

1132,000

1200,000 

190,000 

1119,000 

27,200 

34,100 

39,000. 

18,400 

15,000 

73,300 

8,050 

5,14tt 

3,930

2,240 

3,270 

2,840 

4,640 

1,990 

1,340 

2,890 

1,740

1,810 

1,450 

1,210 

11,100 

9,160 

3,050 

1,480 

1,080

. Percent in indicated sieferaagB

<0.005 

mm.

1.0 

.7

.7

1.1 

.5 

.6

,.6

.9

.8

1.5 

2.9 

.9 

1.3 

1.6 

1.7 

1.2

1.2 

2.9 

.9

1.6 

6.5 

3.3

.8

.9 

1.3 

1.1

0.005- 

0.020 

rmtt.

ISKi 

42.0 

3S6

W8 

MS TV 

1&4

io;o

11, *

1X&

19.7 

5&6 

0&3 

58.2 

4»'S 6fe!3~ 

53.4

4£1 3&>8

2K<6

28; 2

13.5 im

9.0

7.0 

1.6 

6.7 

8.4 

7.7 

5.2 

9.5 

7.7 

63.5 

37.5 

16.6 

.22.5

17.8 

33.3 

35.0 

25.0 

36.7 

17.3 

- 77.4 

28.9

22.0 

25.0 

15.0 

65.5 

28.7 

40.8 

28.0 

25.7

0.020- 

0.050 

mm,.

8.9 

16.0 

12.4

7.8F 

6.ff 5.r

5.3T

4.3-

5.2,

6.2 

3.3 

6.0 

12.3= 10.0' 

8.1 

16.8

15..8 

12.4 

11.9

9.6 

6.2 

6.3 

7.1

4.7 

2.3 

4.6 

2.0 

2.3 

2.0 

1.7 

1.3 

3.6 

3.9 

2.7 

4.0

3.2 

5/3 

4.3 

6.4 

4.0 

3.2 

2.9 

2.4

2.1 

1.8 

1.1 

9.5 

5.5 

3.8 

5.3 

2.7

o.oa>-

0.074 

nmii

12.4 

15.8 

17.6

17.8 

15.8 

13.2

15.6

: 10.3

10.6

14.4 

6.0 

5.d 

7.8 

7.8 

6.0 

11.0

19.0 

15.3 

17.9

15.0 

13.4 

13J& 

12.0

10.0 

3.9 

11.3 

11.9 

9.0 

9.1 

10.8 

8.9 

1.4 

9.1 

6.4 

7.9

10.6 

8.7 

7.8 

14.4 

9.1 

9.7 

.5.7 

5.8

5.8 

8.8 

5.0 

7.7 

17.7 

15.9 

15.0 

9.3

0.074- 

0.149

mm.

. 21.4 

18.1 

1 30.7

- SB.2 

33.6 

: 41. 2

> 44.9

44.2

> 42.9

42.9 

19.9 

U6.1 

1 1IT.2 

18.8 

11.4 

11.4

11.6 

19.7 

21.0

28.4 

27.5 

2&8 

30.5

27.3 is: 4

31.1 

35.3 l^ff1 

31.6 

27.5 

41.6 

6.2 

35.4 

38.7 

48.6

53.3 

42.1 

40.6 

42.1 

40.5 

44.2 

12.4 

44.9

45.5 

51.1 

44.6 

12.3 

36.1 

29.7 

42.0 

37.0

X«*r

1 mm.

39,0^ 

7.4 16,0'"

28.3' 

38^5^ 

25. W

23. »

28.9'

28.01^

15.3 9.3! 

7.1- 

1L2K 

13. fr 7.5^ 

6.2

10. 3T 14.4*< 

16.7'

22.2: 

32.9 

36.8 

40.6

50.1 

75.5 

45.2 

42,4 

W.t> 

5Z1 

50.5 

40.5 

25.3 

14.1 

35.6 

17.0

15.1 

10.6 

12.3 

12.1 

9.7 

25.6 

1.6 

18.0"

24.6 

13.3 

34.3 

5.0 

12.0 

9.8 

9.7 

25.3

i Mean for days on which samples were collected for mechanical analysis.
Page 

Acme, N. Mex., BWMWRfcrer near_.*..;.... 38*29

ifcn^lyses of surface waters published toy < tee4«ei<»i-8nrvey_----~----....---------------- 4

Analytical methods. ____..-. .^ .... 1-2

Animas River at FarraSfigtoajiN.' Mex....... <I5

Arizona, chemical analyses of water in. __. 40-41,

<»-47, 80^54 

mechanical s*Wy«es-of'v«rt«r'iB........... 60

suspended watment loads of water to..... 58-59

*ttns5ia, N. Mex., Pecos River near........... 30-31

Bainbridge, Oa., FHnt Rt?«r at..____...-._-- 15

Biscayne Canal near Miami, Fla_ _____ 9-10 

Bluff, Utah, San Juan River near._..... 44,63-66

Boulder Dam, Ariz.-Nev., Colorado River

below..____________ 41 

Brannock, W. W., analyses by.. -.... ... 3,4

Brazos River at Possum Kingdom Dam near

Graford, Tex.....--.-. ........ 24

near South Bend, Tex______..... 22-23

Broward County, Fla., canals in____...... 7

Caloosahatcb.ee Canal at Moore Haven, Fla.. 6 

Cameo, Colo., Colorado River near_........ 48

Canadian River near Sanchez, N. Mex_... 17 

Carlsbad, N. Mex., Carlsbad project canal

near.............................. 38

PeeosRiverat - .. -.I ..-.. 32 

Carlsbad project canal at Avalon Dam near

Carlsbad, N. Mex................ 38

Cisco, Utah, Colorado River near......... 49,56-57

Colorado, analyses of water in_______.. 39,48 

Colorado River at Bright Angel Creek near

Grand Canyon, Ariz._....... 40,58-60

below Boulder Dam, Ariz.-Nev.._._.. 41 

in Utah___._...................... 49

near Cameo, Colo.______....____ 48

near Cisco, Utah................:..... 49,55-57

near Glenwood Springs, Colo............. 39

Colorado River Basin.................__. 4,39-66

Conchas Reservoir near Conchas Dam, N.'

Mex.............................. 18-20

Conchas River at Variadero, N.Mex..--.. - 18 

Cooperation, record of.....____........... 2-4

Coral Gables, Tamiami Canal near....___ 7

Coral Gables Canal near Miami, Fla......... 12-14

Crowell, Tex., Pease River near ____. _. 21 

Cypress Creek Canal at Pompano, Fla....... 7

Dade County, Fla., canals in..........

Deerfield Beach, Eillsboro Canal near.

7

7

Farmington, N. Mex., Animas River at...... 45

Flint River at Bainbridge, Ga......^....____ 15

Florida, analyses of water in!________ 5-14 

Fort Lauderdale, Fla., North New River

Canal near__._______. 6,7

Georgia,analyses of water to........ ....... : l««16

GilaRiv«ratSa*ord,Ariz_.; ......j. ;.... 48*47

Glenwood Springs, Colorado River cow...... 39

Graford, Tex., Brazes Kiver near............. 24

Grand Canyon, Ariz., Colorado *i^er at

Bright Angel Creek near.... 40,58-60

Grandfalls, Tex., PMos Biter'IWM^.......... 37

Grand Junction, Colo., Gunnison River near. 48 

Green River, Utah, Green BiTer-at--.:.. 49,81^62 

Green River -at «»« Biter, Utah-,----.:4tt, 61-62

Gnadalupe, N. Mex., Peeo»*iv« fiear....... 27'

Gulf of Mexico baajns.............. *4,15-M,&2*88

Gunnison River near Cameo, Cole.......,.,. 48

near Grand Junction, Golo.:.---.--.--.I. 48

i, W. W., analysesby................. 3,4

Hem, J. D., analyses by..-.. ...... ......._... *!,!

Hialeah, Fla., Miami Canal at--..----.------ 5

Hillsboro Canal near Deerfield Beach .. __ 7

Howard, C. S., analyses by_________ 3,4

Irelan, B., analyses by.

take Mead, Ariz.-Nev..-.. ................... 50-54

Lake Okeechobee, Fla., St. Lucie Canal at... 5 

Lamar, W. L., analyses by._........ 2

Little River Canal near Miami, Fla.......... 10-11

Lohr, E. W., analyses by....--.----.------... 2,3,4

Love, S. K., analyses by_____. ____ 2 

Lower Mississippi River Basin............. 3,17-21

Malaga, N. Mex., Pecos River near..........

Mechanical analyses, tables of ...-_.......

Miami, Fla., Biscayne Canal near.. _ . __

Coral Gables Canal near......... _.....

Little River Canal near..................

Snake Creek Canal near..................

Snapper Creek Canal near _____.....

Tamiami Canal near.._._._____

tidal canals in and near_ ________ 

Miami Canal at Hialeah, Fla................

Miller, L. W., analyses by._.___.........

Minton, W. L., analyses by...._.__,.....

Mississippi River Basin.....________ 3,

Moore Haven, Fla., Caloosahatchee Canal at. 

Mykytka, J. E., analyses by...._._'....

9-10

12-14^

10-11

8-9

14

7,12

8-14

5

4

3,4 

17-21

Nevada, analyses of water in.. ___ ____ 50-54 

New Mexico, analyses of water in. . . 17-20, 25-35, 88 > North New River Canal near Fort Lauderdale,

Fla.... ........................... 6^7

Oostanaula River at Rome, Ga 

Oria, Tex., Pecos River near.....

Pahn Beach County, Fla., canals in 

Pease River near Crowell, Tex...

er
68 INDEX

Pace

Pecos Biver at Carlsbad, N. Mex~. ._ ..___ 32 

at Bed Bluff, N. Mex.. ........... ....... 34-35

below Qrandfalls, Tex _ .-.-..---.... _ . 37

near Acme, N. Mex... _ . _ . _ A _ ... 28-29 

near Artesia, N. Mex..................... 30-31

near Quadalupe, N. Mex ____._.,..._._ 27

near Malaga, N. Mex..... .. _ .... ___ 33-34

near Orla, Tex.. ....... ___ . ____

Petretic, Q. J., analyses by _ . ___ ........

Pompano, Fla., Cypress Creek Canal at __ 

Possum Kingdom Dam near Graford, Tex.,

Brazos River at _________ 

Publication of records of analyses by Geological

Survey ___________ « _

Borne, Ga., Oostanaula River at..

Saflord, Ariz., GilaBiverat ..__......... 46-47

St. Lucie Canal at Lake Okeeehobee, Fla._ 6 

San Acacia, N. Mex., Bio Grande at__..... 25^-26

Sanchez, N. Mex., Canadian Biver near__ 17

San Juan Biver at Shiprock, N. Mex____ 42-43

 near Bluff, Utah....... .._.__..___._. 44,63-66

Sediment, load of, carried by streams_. _ 64-66

mechanical analyses of. .-..---_._..60,66

Seegmiller, C. G., analyses by________ 2

Page

Shiprock, N. Mex., San Juan Biver at -. . 42-43 

Snake Creek Canal near Miami, Fla . 8-9 

Snapper Creek Canal near Miami, Fla _ .... 14

South Atlantic slope basins. 2,5-14 

South Bend, Tex., Brazos Biver near...... 22-23

Suspended sediment loads, tables of ____ . 54-66 

Swenson, H. A., analyses by . .... 2

Talvitie, N. A,, analyses by ........ 4

Tamiami Canal near Coral Gables.!-. __ i... 7 

near Miami, Fla... - ......- .---.--. 7,12

Texas, analyses of water in __ . __ ... 21-24,36-37 

Thomas, M. B., analyses by.... -. .... .1 4

Tidal canals in and near Miami, Fla ... ... 8-14

Utah, chemical analyses of water in. .. __ 44,49 

mechanical analyses of water in 66 

suspended sediment loads.of water in,.,. 55-57,

Variadero, N. Mex., Conchas Biver at ___ ,-: IS

West Palm Beach Canal at West Palm Beach- . , 8

White, W. F., Jr., analyses by.,.-,. ......... 3

Witt, P. A., analyses by ................... 4

Yett, J., analyses by.

o