DEPARTMENT OF THE INTERIOR

UNITED STATES GEOLOGICAL SURVEY

GEORGE OTTS BTViri'H, DIRECTOR

WATER-SUPPLY PAPER 248

SURFACE WATER SUPPLY OF THE 

UNITED STATES

1907-8

PART VIII. WESTERN GULF OF MEXICO

PREPARED UNDER THE DIRECTION OF M. 0. LEIGHTON

BY

W. B. FREEMAN, W. A. LAMB, AND 

R. H. BOLSTER

WASHINGTON

GOVERNMENT PRINTING OFFICE

1910
DEPARTMENT OF THE INTERIOR

UNITED STATES GEOLOGICAL SURVEY

GEORGE OTIS SMITH, DIKECTOK

WATER-SUPPLY PAPER 248

SURFACE WATER SUPPLY OF THE 

UNITED STATES

1907-8

PART YIIL WESTERN GULF OF MEXICO

PREPARED UNDER THE DIRECTION OF M. 0. LEIGHTON

BT

W. B. FREEMAN, W. A. LAMB, AND 

R. H. BOLSTER

WASHINGTON

GOVERNMENT PRINTING OFFICE

1910
CONTENTS.

Page.

Introduction.............................................................. 5

Authority for investigations............................................. 5

Scope of investigations................................................ 6

Purposes of the work.................................................. 7

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

Definition of terms..................................................... 11

Convenient equivalents................................................ 12

Explanation of tables................................................. 13

Field methods of measuring stream flow..........'....................... 14

Office methods of computing and studying discharge and run-off.......... 19

Accuracy and reliability of field data and comparative results............. 24

Use of the data........................................................ 25

Cooperation and acknowledgments..................................... 26

Division of work...................................................... 26

Rio Grande drainage basin................................................... 27

General features....................................................... 27

Rio Grande proper.................................................... 32

Rio Grande near Creede, Colo....................................... 32

Rio Grande near Del Norte, Colo................................... . 34

Rio Grande near Lobatos, Colo. ......... ^.......................... 37

Rio Grande near San Martial, N. Mex.............................. 40

Rio Grande near El Paso, Tex...................................... 45

Rio Grande above Presidio, Tex.................................... 50

Rio Grande below Presidio, Tex.................................... 55

Rio Grande near Langtry, Tex...................................... 60

Rio Grande below mouth of Devils River, Texas .................... 65

Rio Grande at Eagle Pass, Tex...................................... 70

Rio Grande near Nuevo Laredo, Tamaulipas, Mexico, and Laredo,

Tex............................................................ 75

Rio Grande near Roma, Tex........................................ 83

Rio Grande near Brownsville, Tex................................. 93

Conejos River near Mogote, Colo....................................... 103

Santa Fe Creek at Santa Fe, N. Mex.................................... 107

Mimbres River near Faywood, N. Mex.................................. 109

Cameron Creek at Fort Bayard, N. Mex................................ 110

Stephens Creek near Fort Bayard, N. Mex............................... 112

Pecos River drainage basin............................................. 114

Description........................................................ 114

Pecos River near Fort Sumner, N. Mex.............................. 116

Pecos River near Dayton, N. Mex. ................................... 119

PecoB River near Lakewood, N. Mex................................ 122

Pecos River at Avalon, N. Mex..................................... 124

Pecos River at Carlsbad, N. Mex................................... 125

PecoB River and Margueretta flume near Pecos, Tex................. 127

Pecos River near Moorhead, Tex.................................... 130

3
4 CONTENTS.

Rio Grande drainage basin Continued.

Pecos River drainage basin Continued.

Gallinas River near Las Vegas, N. Mex............................. 134

Hondo reservoir inlet near Roswell, N. Mex......................... 137

Hondo River below Hondo reservoir outlet canal near Roswell, N. Mex. 139 

Penasco River near Dayton, N. Mex............................... 139

Lake McMillan at Lakewood, N. Mex.............................. 141

Devils River at Devils River, Tex...................................... 141

Rio Salado near Guerrero, Tamaulipas, Mexico.......................... 145

Rio San Juan near La Quemada and Santa Rosalia ranch, Tamaulipas, 

Mexico............................................................. 155

Miscellaneous measurements in Rio Grande basin........................ 165

Index.................................................................... 167

ILLUSTRATIONS.

Page.

PLATE I. A, Current-meter rating station at Los Angeles, Cal.; B, Bridge 

station and cross section of stream illustrative of 0.2 and 0.8 depth 

method........................................................ 16

II. Price penta-recording meters..................................... 18

III. A, Leasburg diversion dam and intake gates of main Rio Grande 

canal, Rio Grande project, New Mexico; B, Weir and scour gate in 

main inlet canal at inlet of Hondo reservoir, Hondo project, New 

Mexico........................................................ 30

IV. A, Lake McMillan reservoir, Carlsbad project, New Mexico; B, Main 

Avalon canal from head gates of Avalondam, Carlsbad project, New 

Mexico ....................................................... 116

FIGURE 1. Discharge, area, and mean velocity curves of Rio Grande near

Creede, Colo................................................... 21
SURFACE WATER SUPPLY OF WESTERN GULF OF 

MEXICO, 1907-8.

By W. B. FREEMAN, W. A. LAMB, and R. H. BOLSTER.

INTRODUCTION.

AUTHORITY FOR INVESTIGATIONS.

This volume contains results of flow measurements made on certain streams in the United States. The work was performed by 

the water-resources branch of the United States Geological Survey; 

either independently or in cooperation with organizations mentioned 

herein. These investigations are authorized by the organic law of 

the Geological Survey (Stat. L., vol. 20, p. 394), which provides, 

among other things, as follows:

Provided that this officer [the Director] shall have the direction of the Geological 

Survey and the classification of public lands and examination of the geological structure, mineral resources, and products of the national domain.

Inasmuch as water is the most abundant and most valuable 

mineral in nature, the investigation of water resources is included 

under the above provision for investigating mineral resources. The 

work has been supported since the fiscal year ending June 30, 1895, 

by appropriations in successive sundry civil bills passed by Congress 

under the following item:

For gaging the streams and determining the water supply of the United States, and 

for the investigation of underground currents and artesian wells, and for the preparation of reports upon the best methods of utilizing the water resources.

The various appropriations that have been made for this purpose 

are as follows:

Annual appropriations for the fiscal year ending June 30 

1895............................................................... $12,5pO

1896............................................................... 20,000

1897 to 1900,inclusive............................................. 50,000

1901 to 1902,inclusive............................................. 100,000

1903 to 1906,inclusive............................................. 200,000

1907............................................................... 150,000

1908 to 1910, inclusive............................................. 100,000

5
6 STJBFACE WATEE SUPPLY, 1907-8. 

SCOPE OF INVESTIGATIONS.

These investigations are not complete nor do they include all the 

river systems or parts thereof that might purposefully be.studied. 

The scope of the work is limited to that which can be provided with 

the appropriations available. The field covered and the character 

of the work are believed to be the best that could be accomplished 

under the controlling conditions. It would undoubtedly be of more 

scientific importance and ultimately of more practical value if the 

money now applied to wide areas were concentrated on a few small 

basins. Such a course is impossible because general appropriations 

made by Congress are applicable to all parts of the country. Each 

part demands its proportionate share of the benefits.

It is essential that records of stream flow shall be maintained during a period of years sufficient to cover all stages, in order that within 

reasonable limits the entire range of flow from the absolute maximum 

to the absolute minimum may be determined. The length of such a 

period manifestly varies for different streams and can not be absolutely determined. Experience has shown that the records should 

cover from five to ten years, or for some streams twenty years or 

more, the limit being determined by the relative importance of the 

stream and the interdependence of the results and other long-time 

records on adjacent streams.

In the performance of this work the Geological Survey endeavors 

to approach as nearly as possible the highest degree of precision 

which a rational expenditure of time and a judicious expenditure of 

a small amount of money will allow. In all engineering work there 

is a point of refinement beyond which it is needless and wasteful to 

proceed, and this principle applies with especial force to stream-flow 

measurements. It is confidently believed that with some unavoidable exceptions the stream-flow data presented in the publications of 

the Survey are sufficiently accurate for all practical purposes. Many 

of the records are, however, of insufficient length, owing to the unforeseen reduction of appropriations and consequent abandonment of 

many stations. All persons are cautioned to exercise the greatest 

care in the utilization of such incomplete records.

Records of varying lengths have been obtained at about 1,400 different points in the United States, and in addition the surface water 

supply of small areas in Seward Peninsula and the Yukon-Tanana 

region, Alaska, has been investigated. During 1907 and 1908 regular 

gaging stations were maintained by the Survey -and cooperating 

organizations at about 740 points in the United States, and in addition numerous miscellaneous measurements were made. Data were 

also obtained in regard to precipitation, evaporation, storage reservoirs, river profiles, and water power in many sections of the country.
INTRODUCTION. 7

These data will be made available in the regular surface water-supply 

papers and in special papers from time to time.

PURPOSES OF THE WORK.

Among the purposes for which the results contained in this volume 

are requisite are navigation, irrigation, domestic water supply, water 

power, swamp and overflow land drainage, and flood prevention. 

The demands of all these interests are immediate.

Navigation. The Federal Government has expended more than 

$250,000,000 for the improvement of inland navigation and prospective expenditures will approximate several times this amount. 

It is obvious that the determination of stream flow is necessary to 

the intelligent solution of the many problems involved.

Irrigation. The United States is now expending $42,000,000 on 

federal irrigation systems, and this amount is far exceeded by the 

private expenditures of this nature in the arid West. The integrity of 

any irrigation system is based absolutely on the amount of water 

available. Therefore investigations of stream flow in that portion 

of the country are of first importance in the redemption of the lands, 

as well as constituting an insurance of federal and private investments.

Domestic water supply. The highest use of water is that of domestic supply, and while the federal interest in this aspect of the 

matter is less direct than in the aspects already named this use of 

water nevertheless has so broad a significance with respect to the 

general welfare that the Federal Government is ultimately and intimately concerned.

Water power. The time is rapidly approaching when the development of the water power of the country will be an economic necessity. 

Our stock of coal is being rapidly depleted and the cost of steam 

power is increasing accordingly. Industry will cease its growth if 

cheap power is not available, and in that event the United States as a 

nation will cease to progress. Water power is the only avenue now 

open. When the electric transmission of power was accomplished, 

the relation of our water powers to national economy changed entirely. Previous to the day of electric transmission the importance 

of a water power was largely confined to the locality at which it was 

generated, but it has now become a pubilc utility in which the individual citizen is vitally interested. Inasmuch as the amount of 

water power that may be made available is dependent on the flow 

of rivers, the investigation of flow becomes a prerequisite in the 

judicious management of this source of energy.

Drainage of swamp and overflowed lands. More than 70,000,000 

acres of the richest land in this country are now practically worthless, or of precarious value, by reason of overflow and swamp conditions. When this land is drained it becomes exceedingly produc-
8 SUKFACE WATEE SUPPLY, 1907-8.

tive and its value increases many fold. Such reclamation would 

add to the national assets at least $700,000,000. The study of runoff is the first consideration in connection with drainage projects. 

If, by the drainage of a large area into any particular channel, that 

channel becomes so gorged with water, which it had not hitherto been 

called upon to convey, that overflow conditions are created in places 

where previously the land was not subject to inundation, then drainage results merely in an exchange of land values. This is not the 

purpose of drainage improvement.

Flood prevention. The damage from floods in the United States 

exceeds $100,000,000 annually, and in the year 1908 the aggregate 

damage, based on reliable data, approximated $250,000,000. Such 

an annual tax on the property of great regions should be reduced in 

the orderly progress of government. It goes without saying that any 

consideration of flood prevention must be based on a thorough 

knowledge of stream flow, both in the contributing areas which furnish the water and along the great, lowland rivers.

PUBLICATIONS.

The data on stream flow collected by the United States Geological 

Survey since its inception have appeared in the annual reports, 

bulletins, and water-supply papers. Owing to natural processes of 

evolution and to changes in governmental requirements, the character 

of the work and the territory covered by these different publications 

has varied greatly. For the purpose of uniformity in the presentation of reports a general plan has been agreed upon by the United 

States Keclamation Service, the United States Forest Service, the 

United States Weather Bureau, and the United States Geological 

Survey, according to which the area of the United States has been 

divided into twelve parts, whose boundaries coincide with certain 

natural drainage lines. The areas so described are indicated by the 

following list of papers on surface water supply for 1907 and 1908. 

The dividing line between the North Atlantic and South Atlantic 

drainage areas lies between York and James rivers.

Papers on surface ivater supply of the United States, 1907-8.

Part.

T

TT

TTT

IV

V

No.

241

242

243

244

245

Title.

North Atlantic coast.

South Atlantic coast and eastern Gulf

of Mexico.

Ohio River basin.

St. Lawrence River basin.

Upper Mississippi River and Hudson

Bay basins.

Part.

VI

VII

VIII

IX

X

XI

XII

No.

246

247

248

249

250

251

252

Title.

Missouri River basin.

Lower Mississippi Elver basin.

Western Gulf ofMexico.

Colorado River basin.

Great Basin.

California.

North Pacific coast.
INTRODUCTION.

The following table gives the character of data regarding stream 

flow at regular stations to be found in the various publications of the 

United States Geological Survey exclusive of all special papers. 

Numbers of reports are inclusive and dates also are inclusive so far 

as the data are available.

Stream-flow data in reports of the United States Geological Survey. 

[Ann.= Annual Report; B.= Bulletiii; W. S.= Water-Supply Paper.]

Report. Character of data. Year.

10th. Ann., pt. 2........ Descriptive information only...................................

llth Ann..pt. 2........ Monthly discharge............................................. 1884 to Sept..

1890. 

12th Ann.,pt. 2........ .....do.......................................................... 1884 to June 30,

1891. 

13th Ann.. pt. 3........ Mean discharge in second-feet.................................. 1884 to Dec. 31,

1892. 

14th Ann., pt. 2........ Monthly discharge (long-time records, 1871 to 1893)............. 1888 to Dec. 31,

1893. 

B. 131.................. Descriptions, measurements, gage heights, and ratings......... 1893 and 1894.

16th Ann., pt. 2........ Descriptive information only...................................

B. 140.................. Descriptions, measurements, gage heights, ratings, and monthly 1895.

discharge (also many data covering earlier years). 

W. S. 11............... Gage heights (also gage heights for earlier years)................ 1896.

18 Ann., pt. 4.......... Descriptions, measurements, ratings, and monthly discharge 1895 and 1896.

(also similar data for earlier years). 

W. S. 15............... Descriptions, measurements, and gage heights, eastern United 1897.

States, eastern Mississippi River, and Missouri River above

junction with Kansas. 

W. S. 16............... Descriptions, measurements, and gage heights, western Missis- 1897.

sippi River below junction of Missouri and Platte, and western United States. 

19th Ann.,pt. 4........ Descriptions, measurements, ratings, and monthly discharge 1897.

(also some long-time records). 

W. S. 27............... Measurements, ratings, and gage heights, eastern United States, 1898.

eastern Mississippi River, and Missouri River. 

W. S. 28............... Measurements, ratings, and gage heights, Arkansas River and 1898.

western United States. 

20th Ann., pt. 4........ Monthly discharge (also for many earlier years)................ 1898.

W. S. 35 to 39.......... Descriptions, measurements, gage heights, and ratings......... 1899.

21st Ann., pt. 4........ Monthly discharge............................................. 1899.

W. S. 47 to 52.. i....... Descriptions, measurements, gage heights, and ratings......... 1900.

22d Ann., pt. 4......... Monthly discharge............................................. 1900.

W. S. 65,66............ Descriptions, measurements, gage heights, and ratings ......... 1901.

W.S. 75............... Monthly discharge............................................. 1901.

W.S. 82 to 85.......... Complete data................................................. 1902.

W.S. 97 to 100......... .....do......................................................... 1903.

W.S. 124 to 135........ .....do......................................................... 1904.

W.S. 165 to 178........ .....do......................................................... 1905.

W. S. 201 to 214........ Complete data, except descriptions............................. 1906.

W. S. 241 to 252........ Complete data................................................. 1907-8.

NOTE. No data regarding stream flow are given in the 15th and 17th annual reports.

The records at most of the stations discussed in these reports 

extend -over a series of years. An index of the reports containing 

records prior to 1904 has been published in Water-Supply Paper 119. 

The first table which follows gives, by years and drainage basins, the 

numbers of the papers on surface water supply published from 1899 

to 1908. Wherever the data for a drainage basin appear in two 

papers the number of one is placed in parentheses and the portion of 

the basin covered by that paper is indicated in the second table. For 

example, in 1904 the data for Missouri River were published in WaterSupply Papers 130 and 131, and the portion of the records contained 

in Water-Supply Paper 131, as indicated by the second table, is that 

relating to Platte and Kansas rivers.
10 SUKFACE WATEB SUPPLY, 1907-8.

Numbers of water-supply papers containing results of stream measurements, 1899-1908,

Atlantic coast and eastern 

Gulf of Mexico: 

New England rivers ..... 

Hudson River to Delaware River, inclusive. . 

Susquehanna River to 

York River, inclusive . 

James River to Yadkin

Santee River to Pearl 

River, inclusive. ......

Hudson Bay. ...............

Mississippi River: 

Ohio River . .............

Upper Mississippi River. 

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

Lower Mississippi River.

Pacific coast and Great Basin:

South Pacific coast to 

Klamath River, inelu1899.0

35 

35 

35 

(35), 36

36

36

36

36 

(36), 37

37 

37

(37), 38

38, (39)

(38), 39

38

1900.6

47. 

47, (48) 

48 

48

48

49

48, (49)

49 

49, (50)

50 

50

50

51

51

51

1901.

65,75 

65,75 

65,75 

65,75

65,75

65,75

66,75

65,75

65,75 

66,75

/ (65), 

I 66, 75 

66,75

66,75

66,75

66,75

66,75

.1902.

82 

82 

82 

(82), 83

83

(82), 83

85

83

83 

84

}(83),84 

84

85

85

85

85

1903.

97 

97 

97 

(97), 98

98

97

100

98

98, (99) 

99

(98), 99 

99

100

100

100

100

1904.

124 

125 

126 

126

127

129

130

128

128, 

(130) 

130,

(131) 

(128), 

131 

132

i

!33,.

(134) 

133,

(134) 

134

135

1905.

165 

166 

167 

167

168

170

171

169

} 171 

} 172

(169), 

173 

174

175,

(177) 

176,

(177) 

177

/ (177),

\ 1/0

1906.

201 

202 

203 

203

204

206

207

205

207 

208

(205), 

209 

210

211,

(213) 

212.

(Aid)

213

| 214

1907-8.

241 

241 

241

242

242

244

245

243

245 

246

} 247 

248

249,

(251) 

250,

(251) 

251

252

« Rating tables and index to Water-Supply Papers 35-39 contained in Water-Supply Paper 39. 

6 Rating tables and index to Water-Supply Papers 47-52 and data on precipitation, wells, and irrigation 

in California and Utah contained in Water-Supply Paper 52.

Numbers of water-supply papers containing data covering portions of drainage basins.

No.

35

36

37

38

39

48..

49..

50..

65..

82..

83..

Q7

98..

99..

128.

130.

131

134.

169,

177.

205.

213.

251.

River basin.

Ohio..............................

Missouri ..........................

Lower Mississippi.. . ..............

Upper Mississippi. ................

tGreat Basin.. .....................

[Colorado. .........................

[North Pacific coast.. . .............

Tributaries included.

Gallatin.

Green, Gunnison, Grand above junction with Gunoison.

Except Kings and Kern.

Wissahiekon and SchuylkUI.

Seioto.

Loup and Platte near Columbus, Nebr. All tributaries below

junction with Platte.

Lake Ontario, tributaries to St. Lawrence River proper.

Do.

Tributaries from the west.

Below junction with Gila.

Susan repeated, Owens, Mohave.

Rogue, Umpqua, Siletz.

Yazoo, Homochitto.

Data at Hardyville repeated; at Yuma, Salton Sea.

1A11 stations in Colorado and Gi>8at Basin drainages lying in

/ California repeated.

. The Order of treatment of stations in any basin in these papers is 

downstream. The main stem of any river is determined on the
INTRODUCTION. 11

basis of drainage area, local changes in name and lake surface being 

disregarded. After all stations from the source to the mouth of the 

main stem of the river have been given, the tributaries are taken up 

in regular order from source to mouth. The tributaries are treated 

the same as the main stream, all stations in each tributary basin 

being given before taking up the next one below.

The exceptions to this rule occur hi the records for Mississippi 

River, which are given in four parts, as indicated above, and in the 

records for large lakes, where it is often clearer to take up the streams 

in regular order around the rim of the lake than to cross back and 

forth over the lake surface.

DEFINITION OF TERMS.

The volume of water flowing in a stream the "run-off" or "discharge" is expressed in various terms, each of which has become 

associated with a certain class of work. These terms may be divided 

into two groups: (1) Those which represent a rate of flow, as secondfeet, gallons per minute, miner's inches, and run-off in second-feet 

per square mile, and (2) those which represent the actual quantity 

of water, as run-off in depth in inches and acre-feet. They may be 

defined as follows:

"Second-foot" is an abbreviation for cubic foot per second and is 

the rate of discharge of water flowing in a stream 1 foot wide, 1 foot 

deep, at a rate of 1 foot per second. It is generally used as a fundamental unit from which others are computed by the use of the factors 

given in the following table of equivalents.

"Gallons per minute " is generally used in connection with pumping 

and city water supply.

The "miner's inch" is the rate of discharge of water that passes 

through an orifice 1 inch square under a head which varies locally. 

It is commonly used by miners and irrigators throughout the West 

and is defined by statute in each State in which it is used.

"Second-feet per square mile" is the average number of cubic feet 

of water flowing per second from each square mile of area drained, 

on the assumption that the run-off is distributed uniformly both as 

regards time and area.

"Run-off in inches" is the depth to which the drainage area would 

be covered if all the water flowing from it in a given period were 

conserved and uniformly distributed on the surface. It is used for 

comparing run-off with rainfall, which is usually expressed in depth 

in inches.

"Acre-foot" is equivalent to 43,560 cubic feet, and is the quantity 

required to cover an acre to a depth of 1 foot. It is commonly 

used in connection with storage for irrigation work.
12 SURFACE WATEE SUPPLY, 1907-8. 

CONVENIENT EQUIVALENTS.

The following is a list of convenient equivalents for use in hydraulic 

computations: .

1 second-foot equals 40 California miner's inches (law of March 23, 1901). 

1 second-foot equals 38.4 Colorado miner's inches. 

1 second-foot equals 40 Arizona miner's inches.

1 second-foot equals 7.48 United States gallons per second; equals 448.8 gallons per 

minute; equals 646,272 gallons for one day. 

1 second-foot equals 6.23 British imperial gallons per second. 

1 second-foot for one year covers 1 square mile 1.131 feet or 13.572 inches deep. 

1 second-foot for one year equals 31,536,000 cubic feet. 

1 second-foot equals about 1 acre-inch per hour. 

1 second-foot for one day covers 1 square mile 0.03719 inch deep. 

1 second-foot for one 28-day month covers 1 square mile 1.041 inches deep. 

1 second-foot for one 29-day month covers 1 square mile 1.079 inches deep. 

1 second-foot for one 30-day month covers 1 square mile 1.116 inches deep. 

1 second-foot for one 31-day month covers 1 square mile 1.153 inches deep. 

1 second-foot for one day equals 1.983 acre-feet. 

1 second-foot for one 28-day month equals 55.54 acre-feet. 

1 second-foot for one 29-day month equals 57.52 acre-feet. 

1 second-foot for one 30-day month equals 59.50 acre-feet. 

1 second-foot for one 31-day month equals 61.49 acre-feet. 

100 California miner's inches equal 18.7 United States gallons per second. 

100 California miner's icnhes equal 96.0 Colorado miner's inches. 

100 California miner's inches for one day equal 4.96 acre-feet. 

100 Colorado miner's inches equal 2.60 second-feet. 

100 Colorado miner's inches equal 19.5 United States gallons per second. 

100 Colorado miner's inches equal 104 California miner's inches. 

100 Colorado miner's inches for one day equal 5.17 acre-feet. 

100 United States gallons per minute equal 0.223 second-foot. 

100 United States gallons per minute for one day equal 0.442 acre-foot. 

1,000,000 United States gallons per day equal 1.55 second-feet. 

1,000,000 United States gallons equal 3.07 acre-feet. 

1,000,000 cubic feet equal 22.95 acre-feet. 

1 acre-foot equals 325,850 gallons.

1 inch deep on one square mile equals 2,323,200 cubic feet. 

1 inch deep on 1 square mile equals 0.0737 second-foot per year. 

1 foot equals 0.3048 meter. 

1 mile equals 1.60935 kilometers. 

1 mile equals 5,280 feet. 

1 acre equals 0.4047 hectare. 

1 acre equals 43,560 square feet. 

1 acre equals 209 feet square, nearly. 

1 square mile equals 2.59 square kilometers. 

1 cubic foot equals 0.0283 cubic meter. 

1 cubic foot equals 7.48 gallons. 

1 cubic foot of water weighs 62.5 pounds. 

1 cubic meter per minute equals 0.5886 second-foot. 

1 horsepower equals 550 foot-pounds per second. 

1 horsepower equals 76.0 kilogram-meters per second. 

1 horsepower equals 746 watts. 

1 horsepower equals 1 second-foot falling 8.80 feet.
INTEODUCTIOir, 13

1J horsepower equal about 1 kilowatt.

To calculate water power quickly: Sec.-ft.Xfall in feet=nefc horsepower on water

wheel realizing 80 per cent of theoretical power.

EXPLANATION OF TABLES.

For each drainage basin there is given a brief description of 

general conditions covering such features as area, source, tributaries, topography, geology, conditions of forestation, rainfall, ice 

conditions, irrigation, storage, power possibilities, and other special 

features of importance or interest.

For each regular current-meter gaging station are given in general, 

and so far as available, the following data: Description of station, 

list of discharge measurements, table of daily gage heights, rating 

table, table of monthly and yearly discharges and run-off. For 

stations located at weirs or dams the gage-height and rating tables 

are omitted and a table of daily discharge is substituted. For 

stations where the flow is computed by shifting-channel methods, a 

table of daily discharge is given in place of rating tables, which are 

not used in these methods of computation.

In addition to statements regarding the location and installation 

of current-meter stations the descriptions give information in regard 

to any conditions which may affect the constancy of the relation of 

gage height to discharge, covering such points as ice, logging, shifting 

conditions of flow, and backwater; also full information regarding 

diversions which decrease the total flow at the measuring section. 

Statements are also made regarding the accuracy and reliability of 

the data.

The discharge-measurement table gives the results of the discharge 

measurements made during the year, including the date, name of 

hydrographer, width and area of cross section, gage height, and 

discharge in second-feet.

The table of daily gage heights gives the daily fluctuations of the 

surface of the river as found from the mean of the gage readings 

taken each day. At most stations the gage is read in the morning 

and in the evening. The gage height given in the table represents 

the elevation of the surface of the water above the zero of the gage. 

All gage heights during ice conditions, backwater from obstructions, 

etc., are published as recorded, with suitable footnotes. The rating 

is not applicable for such periods unless the proper correction to 

the gage heights is known and applied. Attention is called to the 

fact that the zero of the gage is placed at an arbitrary datum and has 

no relation to zero flow or the bottom of the river. In general, the 

zero is located somewhat below the lowest known flow, so that 

negative readings shall not occur.
14 SURFACE WATER SUPPLY, 1907-8.

The discharge measurements and gage heights are the base data 

from which the rating tables and monthly-discharge tables are 

computed.

The rating table gives, either directly or by interpolation, the 

discharge in second-feet corresponding to every stage of the river 

recorded during the period for which it is applicable. It is published 

to enable engineers to determine the daily discharge by its application to the table of gage heights or to check results in the table 

of monthly discharge.

In the table of monthly discharge the column headed "Maximum" 

gives the mean flow, as determined from the rating table, for the day 

when the mean gage height was highest. As the gage height is the 

mean for the day, it does not indicate correctly the period when the 

water surface was at crest height and the corresponding discharge 

consequently larger than given in this column. Likewise, in the 

column of "Minimum" the quantity given is the mean flow for the 

day when the mean gage height was lowest. The column headed 

"Mean" is the average flow in cubic feet for each second during the 

month. On this the computations for the remaining columns, which 

are defined on page 11, are based.

FIELD METHODS OF MEASURING STREAM FLOW.

There are three distinct methods of determining the flow of openchannel streams: (1) By measurements of slope and cross section 

and the use of Chezy's and Kutter's formulas; (2) by means of a 

weir or dam; (3) by measurements of the velocity of the current and 

of the area of the cross section. The method chosen depends on the 

local physical conditions, the degree of accuracy desired, the funds 

available, and the length of time that the record is to be continued.

Slope method. Much information has been collected relative to the 

coefficients to be used in the Chezy formula, v = c^rs. This has 

been utilized by Kutter, both in developing his formula for c and in 

determining the values of the coefficient n which appears therein. 

The results obtained by the slope method are in general only roughly 

approximate, owing to the difficulty in obtaining accurate data and 

the uncertainty of the value for n to be used in Kutter's formula. 

The most common use of this method is in estimating the flood discharge of a stream when the only data available are the cross section, 

the slope as shown by marks along the bank, and a knowledge of the 

general conditions. It is seldom used by the United States Geological Survey. For full information regarding this method the 

reader is referred to the various text-books on hydraulics.

Weir method. Relatively few stations are maintained at weirs or 

dams by the United States Geological Survey. Standard types of 

sharp-crested and broad-crested weirs within the limits for which
INTRODUCTION. 15

accurate coefficients have been experimentally obtained give very 

accurate records of discharge if properly maintained. At practically 

all broad-crested weirs, however, there is a diversion of water either 

through or around the dam, usually for the purpose of development 

of water power. The flow is often complicated and the records are 

subject to errors from such sources as leakage through the dam, 

backwater at high stages, uncertainty regarding coefficient, crest 

which is not level, obstructions from logs or ice, use of flashboards, 

old turbines with imperfect ratings, and many others depending on 

the type of development and the uses of the diverted water.

In general, records of discharge at dams are usually accurate enough 

for practical use if no others are available. It has been the general 

experience of the United States Geological Survey, however, that 

records at current-meter gaging stations under unobstructed channel 

conditions are more accurate than those collected at dams, and where 

the conditions are reasonably favorable are practically as good as 

those obtained at sharp-crested weirs.

The determination of discharge over the different types of weirs 

and dams is treated fully in "Weir experiments, coefficients, and 

formulas" (Water-Supply Paper 200a) and in the various textbooks on hydraulics. "Turbine water-wheel tests and power tables" 

(Water-Supply Paper 180) treats of the discharge through turbines 

when used as meters. The editions of both of these water-supply 

papers are practically exhausted. They can, however, be consulted at 

most of the larger libraries of the country or they can be obtained 

from the Superintendent of Documents, Washington, D. C., at a cost 

of 20 cents for No. 180 and 35 cents for No. 200. Remittances must 

be made by postal money order, express order, or New York draft.

Velocity method. Streams in general present throughout their 

courses to a greater or less extent all conditions of permanent, semipermanent, and varying conditions of flow. In accordance with the 

location of the measuring section with respect to these physical 

conditions, current-meter gaging stations may in general be divided 

into four classes (1) those with permanent conditions of flow;

(2) those with beds which change only during extreme high water;

(3) those with beds which change frequently but which do not cause 

a variation of more than about 5 per cent in the discharge curves 

from year to year; and (4) those with constantly shifting beds. 

In determining the daily flow different office methods are necessary 

for each class. The field data on which the determinations are 

based and the methods of collecting them are, however, in general 

the same. *

Great care is taken in the selection and equipment of gaging 

stations for determining discharge by velocity measurements, in

o Water-Supply Paper 200 Is a revision of No. 150, the edition of which is exhausted.
16 SURFACE WATER SUPPLY, 1907-8.

order that the data may have the required degree of accuracy. 

They are located, as far as possible, at such points that the relation 

between gage height and discharge will always remain constant 

for any given stage. The experience of engineers of the Geological 

Survey has been that permanency of conditions of flow is the prime 

requisite of any current-meter gaging station when maintained for 

several years unless funds are available to cover all changes in conditions of flow. A straight, smooth section without cross currents, 

backwater, boils, etc., at any stage is highly desirable, but on most 

streams is not attainable except at the cost of a cable equipment. 

Rough, permanent sections, if measurements are properly made 

by experienced engineers, taking measuring points at a distance 

apart of 2 to 5 per cent or less of the total width, will within reasonable 

limits yield better results for a given outlay of money than semipermanent or shifting sections with smooth, uniform current. So 

far as possible stations are located where the banks are high and not 

subject to overflow at high stages and out of the influence of tributary 

streams, dams, or other artificial obstructions which might affect the 

relation between gage height and discharge.

A gaging station consists essentially of a gage for determining 

the daily fluctuations of stage of the river and some structure or 

apparatus from which discharge measurements are made, usually 

a bridge or cable.

The two factors required to determine the discharge of a stream 

past a section perpendicular to the mean direction of the current 

are the area of the cross section and the mean velocity of flow normal 

to that section.

In making a measurement with a current meter a number of 

points, called measuring points, are measured off above and in the 

plane of the measuring section at which observations of depth and 

velocity are taken. (See PL I, B.) The'se points are spaced equally 

for those parts of the section where the flow is uniform and smooth 

and are spaced unequally for other parts according to the discretion 

and judgment of the engineer. In general the points should not 

be spaced farther apart than 5 per cent of the distance between 

piers, nor farther apart than the approximate mean depth at the 

time of measurement.

The measuring points divide the total cross section into elementary 

strips at each end of which observations of depth and velocity 

are made. The discharge of any elementary strip is the product 

of the average of the depths at the two ends times the width of the 

strip times the average of the mean velocities at the two ends of the 

strip. The sum of the discharges of the elementary strips is the total 

discharge of the stream. (For a discussion of methods of computing 

the discharge of a stream see Engineering News, June 25, 1908.)
U. S. GEOLOGICAL SURVEY WATER-SUPPLY PAPER 248 PLATE I

A. CURRENT-METER RATING STATION AT LOS ANGELES, CAL.

B. BRIDGE STATION AND CROSS SECTION OF STREAM. 

Illustrating 0.2 and 0.8 depth method.
INTRODUCTION. - 17

Depths for the determination of the area are usually obtained by 

sounding with the current meter and cable. In rough sections or 

swift current an ordinary weight and cable are used, particular care 

being taken that all observations shall be in the plane of the cross 

section.

Two methods of determining the velocity of flow of a stream are 

in general use the float method and the current-meter method.

The float method with its various modifications of surface, subsurface, and tube or rod floats is now considered obsolete in the ordinary practice of the United States Geological Survey. The use of 

this method is limited to special conditions where it is impracticable 

to use the current meter, such as in places where large quantities of 

ice or debris which may damage the meter are flowing with the current, and for miscellaneous measurements or other work where a 

high degree of accuracy is not necessary. Tube floats are very satisfactory for use in canals with regular bottoms and even flow of cur-' 

rent. Measurements by the float method are made as follows: 

The velocity of flow of the stream is obtained by observing the time 

which it takes floats set free at different points across the stream 

to pass between two range lines about 200 feet apart. The area 

used is the mean value obtained from several cross sections measured 

between the two range lines. The chief disadvantages of this method 

are difficulty in obtaining the correct value of mean area for the 

course used and uncertainty regarding the proper coefficient to 

apply to the observed velocity. For further information regarding 

this method the reader is referred to Water-Supply Paper 95 and to 

the various text-books covering the general subject of stream flow.

The Price current meter is now used almost to the exclusion of 

other types of meters by the United States Geological Survey in the 

determination of the velocity of flow of water in open channels, a 

use for which it is adapted under practically all conditions. Plate 

II shows in the center the new type of penta-recording current meter 

equipped for measurements at bridge and cable stations. On the sides 

of the same type of meter is shown equipped for wading measurements to record by the acoustic method on the left and by the electric 

method on the right. Briefly, the meter consists of six cups attached 

to a vertical shaft which revolves on a conical hardened steel point 

when immersed in moving water. The number of revolutions is 

indicated electrically. The rating, or relation between the velocity 

of the moving water and the revolutions of the wheel, is determined 

for each meter by drawing it through still water for a given distance 

at different speeds and noting the number of revolutions for each 

run. (See PL I, A.) From these data a rating table is prepared 

which gives the velocity per second of moving water for any number 

24440 IRE 248 10 2
18 SURFACE WATER SUPPLY, 1907-8.

of revolutions in a given time interval. The ratio of revolutions per 

second to velocity of flow in feet per second is very nearly a constant 

for all speeds and is approximately 0.45.

Three classes of methods of measuring velocity with current meters 

are in general use multiple-point, single-point, and integration.

The two principal multiple-point methods in general use are the 

vertical velocity curve and 0.2 and 0.8 depth.

In the vertical velocity curve method a series of velocity determinations are made in each vertical at regular intervals, usually about 

10 to 20 per cent of the depth apart. By plotting these velocities as 

abscissas and their depths as ordinates and drawing a smooth curve 

among the resulting points, the vertical velocity curve is developed. 

This curve shows graphically the magnitude and changes in velocity 

from the surface to the bottom of the stream. The mean velocity 

in the vertical is then obtained by dividing the area bounded by 

this velocity curve and its axis by the depth. This method of obtaining the mean velocity in the vertical is probably the best known, 

but on account of the length of time required to make a complete 

measurement its use is largely limited to the determination of coefficients for purposes of comparison and to measurements under ice.

In the second multiple-point method the meter is held successively 

at 0.2 and 0.8 depth, and the mean of the velocities at these two points 

is taken as the mean velocity for that vertical. (See PI. I, B.) On the 

assumption that the vertical velocity curve is a common parabola 

with horizontal axis, the mean of the velocities at 0.22 and 0.79 depth 

will give (closely) the mean velocity in the vertical. Actual observations under a wide range of conditions show that this multiple-point 

method gives the mean velocity very closely for open-water conditions and that in a completed measurement it seldom varies as much 

as 1 per cent from the value given by the vertical velocity curve 

method. Moreover, the indications are that it holds nearly as well 

for ice-covered rivers. It is very extensively used in the regular 

practice of the "United States Geological Survey.

The single-point method consists in holding the meter either at 

the depth of the thread of mean velocity or at an arbitrary depth 

for which the coefficient for reducing to mean velocity has been 

determined or must be assumed.

Extensive experiments by means of vertical velocity curves show 

that the thread of mean velocity generally occurs between 0.5 and 

0.7 total depth. In general practice the thread of mean velocity is 

considered to be at 0.6 depth, and at this point the meter is held in 

most of the measurements made by the single-point method. A 

large number of vertical velocity curve measurements, taken on 

many streams and under varying conditions, show that the average 

coefficient for reducing the velocity obtained at 0.6 depth to mean
U. S. GEOLOGICAL SURVEY WATER-SUPPLY PAPER 248 PLATE II

PRICE PENTA-RECORDING CURRENT METERS.
INTRODUCTION. 19

velocity is practically unity. The variation of the coefficient from 

unity in individual cases is, however, greater that in the 0.2 and 

0.8 method and the general results are not as satisfactory.

In the other principal single-point method the meter is held near 

the surface, usually 1 foot below, or low enough to be out of the effect 

of the wind or other disturbing influences. This is known as the subsurface method. The coefficient for reducing the velocity taken at 

the subsurface to the mean has been found to be in general from 

about 0.85 to 0.95, depending on the stage, velocity, and channel 

conditions! The higher the stage the larger the coefficient. This 

method is especially adapted for flood measurements, or when the 

velocity is so great that the meter can not be kept in the correct 

position for the other methods.

The vertical-integration method consists in moving the meter at a 

slow, uniform speed from the surface to the bottom and back again 

to the surface and noting the number of revolutions and the time 

taken in the operation. This method has the advantage that the 

velocity at each point of the vertical is measured twice. It is useful 

as a check on the point methods. In using the Price meter great 

care should be taken that the vertical movement of the meter is not 

rapid enough to vitiate the accuracy of the resulting velocity.

The determination of the flow of an ice-covered stream is difficult, 

owing to diversity and instability of conditions during the winter 

period and also to lack of definite information in regard to the laws of 

flow of water under ice. The method now employed is to make frequent discharge measurements during the frozen periods by the 0.2 

and 0.8 and the vertical velocity curve methods, and to keep an 

accurate record of the conditions, such as the gage height to the surface of the water as it rises in a hole cut in the ice, and the thickness 

and character of the ice. From these data an approximate estimate 

of the daily flow can be made by constructing a rating curve (really 

a series of curves) similar to that used for open channels, but considering, in addition to gage heights and discharge, the varying thickness of ice. For information in regard to flow under ice cover, see 

Water-Supply Paper 187.

OFFICE METHODS OF COMPUTING AND STUDYING DISCHARGE AND

RUN-OFF.

At the end of each year the field or base data for current-meter 

gaging stations, consisting of daily gage heights, discharge measurements, and full notes, are assembled. The measurements are plotted 

on cross-section paper and rating curves are drawn wherever feasible. 

The rating tables prepared from these curves are then applied to 

the tables of daily gage heights to obtain the daily discharges, and
20 SURFACE WATER SUPPLY, 1907-8.

from these applications the tables of monthly discharge and run-off 

are computed.

Rating curves are drawn and studied with special reference to 

the class of channel conditions which they represent. (See p. 17.) 

The discharge measurements for all classes of stations when plotted 

with gage heights in feet as ordinates and discharges in second-feet 

as abscissas define rating curves which are more or less generally 

parabolic in form. In many cases curves of area in square feet 

and mean velocity in feet per second are also constructed to the 

same scale of ordinates as the discharge curve. These are used 

mainly to extend the discharge curves beyond the limits of the 

plotted discharge measurements, and for checking purposes to avoid 

errors in the form of the discharge curve and to determine and eliminate erroneous measurements.

For every published rating table the following assumptions are 

made for the period of application of the table: (a) That the discharge is a function of and increases gradually with the stage; (&) 

that the discharge is the same whenever the stream is at a given 

stage, and hence such changes in conditions of flow as may have 

occurred during the period, of application are either compensating or 

negligible, except that the rating as stated in the footnote of each 

table is not applicable for known conditions of ice, log jams, or other 

similar obstructions.; (c) that the increased and decreased discharge 

due to change of slope on rising and falling stages is either negligible 

or compensating.

As already stated the gaging stations may be divided into several 

classes, as indicated in the following paragraphs:

The stations of class 1 represent the most favorable conditions for 

an accurate rating and are also the most economical to maintain. 

The bed of the stream is usually composed of rock and is not subject 

to the deposit of sediment and loose material. This class includes 

also many stations located in a pool below which is a permanent 

rocky riffle that controls the flow like a weir. Provided the control 

is sufficiently high and close to the gage to prevent cut and fill at the 

gaging point from materially affecting the slope of the water surface, 

the gage height will for all practical purposes be a true index of the 

discharge. Discharge measurements made at such stations usually 

plot within 2 or 3 per cent of the mean-discharge curve and the rating 

developed from that curve represents a very high degree of accuracy. 

For illustrative example of a station of this type see fig. 1 and 

Water-Supply Paper 241.

Class 2 is confined mainly to stations on rough mountainous streams 

with steep slopes. The beds of such streams are as a rule comparatively permanent during low and medium stages and when the flow 

is sufficiently well defined by an adequate number of discharge
INTEODTJCXION. 2]

GAGE HEIGHT INFEET

O -* N> CO* O

f

8/

P14

MEASUREMENTS IN 1907, 1 TO 8 

u >' 1908, 9 TO 14 

« » 1909, 15 TO 18

/

f.

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2

DISCHA

^

^GE 

H

IN S

s

COND-F

 ^

170

y

1 

LET

_/

/

7

9/8

X«3

;

>018 /

y

7

/ 

/

/

* /6

12

/.

/

/°16

5

?13 1000 2000 3000 130 4000 5000 P

0 100 200 300 400 500 60

AREA IN SQUARE FEET 0

FIGURE 1. Discharge, area, and mean velocity curves of Rio Grande 
22 SURFACE WATER SUPPLY, 1907-8.

measurements before and after each flood the stations of this class 

give nearly as good results as those of class 1. As it is seldom possible to make measurements covering the time of change at flood 

stage, the assumption is often made that the curves before and after 

the flood converged to a common point at the highest gage height 

recorded during the flood. Hence the only uncertain period occurs 

during the few days of highest gage heights covering the period of 

actual change in conditions of flow. For illustrative examples of 

stations of this type see Water-Supply Paper 246.

Class 3 includes most of the current-meter gaging stations maintained by the United States Geological Survey. If sufficient measurements could be made at stations of this class results would be 

obtained nearly equaling those of class 1, but owing to the limited 

funds at the disposal of the Survey this is manifestly impossible, nor 

is it necessary for the uses to which discharge data are applied. The 

critical points are as a rule at relatively high or low stages. The 

percentage of error, however, is greater at low stages. No absolute 

rule can be laid down for stations of this class. Each rating curve 

must be constructed mainly on the basis of the measurements of the current year, the engineer being guided largely by the past history of the 

station and the following general law: If all measurements ever made 

at a station of this class are plotted on cross-section paper, they will 

define a mean curve which may be called a standard curve. It has 

been found in practice that if after a change caused by high stage, a 

relatively constant condition of flow occurs at medium and low 

stages, all measurements made after the change will plot on a smooth 

curve which is practically parallel to the standard curve with respect 

to their ordinates, or gage heights. This law of the parallelism of ratings 

is the fundamental basis of all ratings and estimates at stations with 

semipermanent and shifting channels. It is not absolutely correct 

but, with few exceptions, answers all the practical requirements 

of estimates made at low and medium stages after a change at 

a high stage. This law appears to hold equally true whether the 

change occurs at the measuring section or at some controlling point 

below. The change is of course fundamentally due to change 

in the channel caused by cut, or fill, or both, at and near the measuring section. For all except small streams the changes in section 

usually occur at the bottom. The following simple but typical 

examples illustrate this law:

(a) If 0.5 foot of planking were to be nailed* on the bottom of a 

well-rated wooden flume of rectangular section there would result, 

other conditions of flow being equalr new curves of discharge, area, 

and velocity, each plotting 0.5 foot above the original curves when 

referred to the original gage. In other words, this condition would 

be analogous to a uniform fill or cut in a river channel which either
INTBODTJCTION. 23

reduces or increases all three values of discharge, area, and velocity 

for any gage height. In practice, however, such ideal conditions 

rarely exist.

(&) In the case of a cut or fill at the measuring section there is a 

marked tendency toward decrease or increase, respectively, of the 

velocity. In other words, the velocity has a compensating effect and 

if the compensation is exact at all stages the discharge at a given 

stage will be the same under both the new and the old conditions.

(c) In the case of uniform change along the crest of a weir or 

rocky controlling point, the area curve will remain the same as 

before the change, and it can be shown that here again the change 

in velocity curve is such that it will produce a new discharge curve 

essentially parallel to the original discharge curve with respect to 

their ordinates.

Of course in actual practice such simple changes of section do not 

occur. The changes are complicated and lack uniformity, a cut at 

one place being largely offset by a fill at another and vice versa. 

If these changes are very radical and involve large percentages of 

the total area as, for example, on small streams there may result 

a wide departure from the law of parallelism of ratings. In complicated changes of section the corresponding changes in velocity 

which tend to produce a new parallel discharge curve may interfere 

with each other materially, causing eddies, boils, backwater, and 

radical changes in slope. In such extreme conditions, however, the 

measuring section would more properly fall under class 4 and would 

require very frequent measurements of discharge. Special stress is 

laid on the fact that in the lack of other data to the contrary the 

utilization of this law will yield the most probable results.

Slight changes at low or medium stages of an oscillating character 

are usually averaged by a mean curve drawn among them parallel 

to the standard curve, and if the individual measurements do not 

vary more than 5 per cent from the rating curve the results are 

considered good for stations of this class. For illustrative example 

of a station of this type see Water-Supply Paper 242.

Class 4 comprises stations that have soft, muddy, or sandy beds. 

Good results can be obtained from such sections only by frequent 

discharge measurements, the frequency varying from a measurement every two or three weeks to a measurement every day, according to the rate of diurnal change in conditions of flow. These 

measurements are plotted and a mean or standard curve drawn 

among them. It is assumed that there is a different rating curve 

for every day of the year and that this rating is parallel to the 

standard curve with respect to their ordinates. On the day of a 

measurement the rating curve for that day passes through that 

measurement. For days between successive measurements it is
24 SUKFACE WATER SUPPLY, 1907-8.

assumed that the rate of change is uniform, and hence the ratings 

for the intervening days are equally spaced between the ratings 

passing through the two measurements. This method must be 

modified or abandoned altogether under special conditions. Personal judgment and a knowledge of the conditions involved can alone 

dictate the course to pursue in such cases. For illustrative examples 

of stations of this type, showing the Bolster method of determining 

the daily discharge graphically, see Water-Supply Papers 247 and 249.

The computations have, as a rule, been carried to three significant 

figures. Computation machines, Crelle's tables, and the 20-inch slide 

rule have been generally used. All computations are carefully 

checked.

After the computations have been completed they are entered in 

tables and carefully studied and intercompared to eliminate or 

account for all gross errors so far as possible. Missing periods are 

filled in, so far as is feasible, by means of comparison with adjacent 

streams. The attempt is made to complete years or periods of discharge, thus eliminating fragmentary and disjointed records. Full 

notes accompanying such estimates follow the monthly discharge 

tables.

For most of the northern stations estimates have been made of 

the monthly discharge during frozen periods. These are based on 

measurements under ice conditions wherever available, daily records 

of temperature and precipitation obtained from the United States 

Weather Bureau climate and crop reports, observers' notes of conditions, and a careful and thorough intercomparison of results with 

adjacent streams. Although every care possible is used in making 

these estimates they are often very rough, the data for some of 

them being so poor that the estimates are liable to as much as 25 

to 50 per cent error. It is believed, however, that estimates of this 

character are better than none at all, and serve the purpose of indicating in a relative way the proportionate amount of flow during 

the frozen period. These estimates are, as a rule, included in the 

annual discharge. The large error of the individual months has a 

relatively small effect on the annual total, and it is for many purposes desirable to have the yearly discharge computed even though 

some error is involved in doing so.

ACCURACY AND RELIABILITY OF FIELD DATA AND COMPARATIVE

RESULTS.

Practically all discharge measurements made under fair conditions are well within 5 per cent of the true discharge at the time of 

observation. Inasmuch as the errors of meter measurements are 

largely compensating, the mean rating curve, when well defined, is 

much more accurate than the individual measurements. Numerous
INTRODUCTION. 25

tests and experiments have been made to test the accuracy of currentmeter work. These show that it compares very favorably with the 

results from standard weirs, and, owing to simplicity of methods, 

usually gives results that are much more reliable than those from 

stations at dams, where uncertainty regarding the coefficient and 

complicated conditions of flow prevail.

The work is, of course, dependent on the reliability of the observers. 

With relatively few exceptions, the observers perform their work 

honestly. Care is taken, however, to watch them closely and to 

inquire into any discrepancies. It is, of course, obvious that one 

gage reading a day does not always give the mean height for that 

day. As an almost invariable rule, however, errors from this source 

are compensating and virtually negligible in a period of one month, 

although a single day's reading may, when taken by itself, be considerably in error.

In order to give engineers and others information regarding the 

probable accuracy of the computed results, footnotes are added to the 

rating tables and an accuracy column is inserted in the monthly discharge table. In the rating tables "well defined" indicates in general 

that the rating is probably accurate within 5 per cent; "fairly well 

defined," within 10 per cent; "poorly defined" or "approximate," 

within 15 to 25 per cent. These notes are very general and are based 

on the plotting of the individual measurements with reference to the 

mean rating curve.

The accuracy column in the monthly-discharge table does not apply 

to the maximum or minimum nor to any individual day, but to the 

monthly mean. It is based on the accuracy of the rating, the probable reliability of the observer, and knowledge of local conditions. In 

this column, A indicates that the mean monthly flow is probably 

accurate within 5 per cent; B, within 10 per cent; C, within 15 per 

cent; D, within 25 per cent. Special conditions are covered by footnotes.

USE OF THE DATA.

In general the policy is followed of making available for the public 

the base data which are collected in the field each year by the Survey 

engineers. This is done to comply with the law, but also for the 

express purpose of giving to any engineer the opportunity of examining the computed results and of changing and adjusting them as may 

seem best to him. Although it is believed that the rating tables and 

computed monthly discharges are as good as the base data up to and 

including the current year will warrant, it should always be borne in 

mind that the additional data collected at each station from year to 

year nearly always throw new light on data already collected and 

published, and hence allow more or less improvement in the computed
26 SURFACE WATEB SUPPLY, 1907-8.

results of earlier years. It is therefore expected that the engineer 

who makes serious use of the data given in these papers will verify 

all ratings and make such adjustments in earlier years as may seem 

necessary. The work of compiling, studying, revising, and republishing data for different drainage basins for five or ten year periods or. 

more is carried on by the United States Geological Survey so far as 

the funds for such work are available.

The values in the table of monthly discharge are so arranged as to 

give only a general idea of the conditions of flow at the station, and it 

is not expected that they will be used for other than preliminary 

estimates. This is particularly true of the maximum and minimum 

figures, which in the very nature of the method of collecting these 

data are liable to large errors. The maximum value should be 

increased considerably for many stations in considering designs for 

spillways, and the minimum value should be considered for a group 

of, say, seven days and not for'one day.

The rating table, provided the engineer accepts it, is published 

primarily to allow him to apply it directly to the daily gage heights 

and rearrange the daily discharges in order of magnitude or by some 

other method.

COOPERATION AND ACKNOWLEDGMENTS.

Special acknowledgments are due to the following parties for assistance rendered and records furnished: The International Boundary Commission, Gen. Anson Mills, commissioner on the part of the 

United States; Senor Don Jacobo Blanco, commissioner on the 

part of Mexico; W. W. Follett, consulting engineer on the part of 

the United States; the territorial engineer of New Mexico, who has 

paid more than half of the expense of maintaining records in the 

Rio Grande drainage in New Mexico, except those on Pecos River; 

the state engineer of Colorado, who has paid the gage observers at 

most of the Rio Grande stations in Colorado, and has materially 

assisted in the work financially and otherwise, and Mr. Antoine Jacob.

The United States Reclamation Service has .paid practically all the 

expense of maintaining gaging stations in the Pecos River drainage.

Thanks are due Mr. A. L. Fellows for valuable suggestions; the 

Denver and Rio Grande Railroad for transportation furnished in 

1907; the United States Weather Bureau and United States Forest 

Service for the data which they have furnished, and the various engineers and power and irrigation companies which have given us data.

DIVISION OF WORK.

The field data in the Rio Grande drainage basin, except for those 

stations maintained by the United States International Boundary Commission, were collected under the direction of W. B. Free-
BIO GRANDE DEAINAGE BASIJST. . 27

man, district engineer, R. I. Meeker and W. A. Lamb, district 

hjclrographers, assisted by J. B. Stewart, Robert L. Cooper, C. L. 

Chatfield, and various engineers of the United States Reclamation 

Service. The New Mexico work since July 1, 1907, has been under 

the more immediate supervision of Vernon L. Sullivan, territorial engineer, assisted by 0. D. Miller.

The data furnished by the United States International Boundary Commission were computed under the direction of W. W. Follett 

from the discharge measurements.

The data, ratings, and special studies of the completed data of the 

stations maintained by the United States Geological Survey were 

prepared by W. B. Freeman and R. H. Bolster. The computations 

and the preparation of the completed data for publication were made 

under the direction of R. H. Bolster, assistant engineer, assisted by 

R. C. Rice, J. G. Mathers, H. D. Padgett, and M. I. Walters.

The entire report was edited by Mrs. B. D. Wood.

RIO GRANDE DRAINAGE BASIN.

GENERAL FEATURES.

The Rio Grande Basin is a long, narrow strip of country extending 

from the southern part of Colorado southeastward to the Gulf of 

Mexico. The perennial supply of water for the upper third of this 

basin comes principally from a comparatively small area of about 

2,000 square miles of lofty mountains in Colorado and the extreme 

northern part of New Mexico.

The Conchos enters the river from the Mexican side some 200 miles 

below El Paso and brings a good perennial flow as well as enormous 

floods in the summer and fall. Pecos and Devils rivers and a number 

of springs also contribute substantial reinforcement to the perennial 

supply, and other tributaries furnish frequent flood discharges, so 

that the "lower river" is a considerable stream and is not dependent 

on the mountain area for its perennial flow. The flood season above 

the Conchos is in May and June; below that stream it is in August 

and September. Frequently the river is dry at El Paso when the 

lower river country is inundated. In addition to the areas contributing a perennial supply of water and a spasmodic supply, there is a 

vast area of lost river basins from which no water comes at any time, 

but which from topographic features may be included within this 

great catchment basin.

The Rio Grande rises in the mountainous area to the south and east 

of the Continental Divide in southwestern Colorado, flows eastward 

for a time as a mountain stream, enters the. San Luis Valley about 80 

miles below its source. In this valley it receives from the north the 

waters of Saguache and San Luis rivers by seepage, if at all; from
28 - SURFACE WATEB SUPPLY, 1907-8.

the west, near the lower end of the valley, Alamos, La Jara, and 

Conejos rivers; and from the east the Trinchera, Culebra, and 

Rio Costilla. About 4 miles north of the Colorado state line it 

enters a long canyon locally known as the Rio Grande canyon. 

From the east there enter this canyon two good tributaries, Red 

River and Rio Hondo.

The general slope of the valley is still toward the south, the river 

descending, however, more rapidly than does the surface of the 

country. This canyon is 300 or 400 feet deep in places, appearing 

from above as a gash in an otherwise level mesa. Its southern end 

is 3 miles above Embudo, N. Mex., where the walls open and the 

river enters the Espanola Valley. While in the valley above Embudo 

the river receives from the east Taos River, Embudo Creek, and other 

small streams, and in the Espanola Valley it is increased by the 

Chama, flowing in from the west, and by a number of streams from 

the east.

At the lower end of Espanola Valley the river passes through White 

Rock canyon, a gorge in a range of hills stretching from the Jemez 

to the Santa Fe Mountains. From Pena Blanca, near the lower end 

of this canyon, nearly to Socorro the river flows in a valley from 1 to 3 

miles wide, bounded on each side by mesas from 300 to 600 feet above 

the river. About 20 miles below Pena Blanca the Jemez enters from 

the west, and 60 miles or more below Albuquerque the Puerco comes 

in from the same side. The Puerco is a torrential stream with no 

perennial flow. Below these streams the Rio Grande has no tributaries of note until the Pecos comes in about 400 miles by river below 

El Pas'0.

At and below Socorro the valley contracts until it becomes too 

narrow for agriculture, but from San Antonio to San Marcial it is 

from 1 to 2 miles wide. Below San Marcial the river swings to the 

west around the Cristobal and Caballos mountains, which lie along 

the west edge of the Jornada del Muerto, the valley from San Marcial 

to Rincon being narrow, low, and marshy. At Rincon the river 

enters a canyon, which extends to Fort Selden, a distance of 15 miles. 

The Mesilla Valley, the most fertile valley in New Mexico, begins 

below Fort Selden and extends to the pass above El Paso, a distance 

of over 50 miles. Above El Paso the banks of the river again assume 

the canyon-like character for 3 miles, and the river passing this 

enters the Ysleta Valley, now commonly called the El Paso Valley.

The canyons above these valleys are not cut into hard, indurated 

rocks, but are bordered in many places by steep walls of comparatively soft, friable sandstones, alternating with conglomerates or 

beds of clay, the whole series in the northern part of New Mexico, at 

least, being capped by a vesicular lava. The fall through these can-
RIO GRANDE DRAINAGE BASIN. 29

yons being great, the down-cutting is rapid, and thus the waters are 

supplied constantly with fresh detritus, part of which is deposited 

in turn in the valley below.

From El Paso to the Gulf the river forms the boundary between 

Mexico and the United States.

From source to mouth the Rio Grande is nearly 2,000 miles long, 

and its total drainage area comprises about 248,000 square miles.

Many national forests have been established on the headwaters of 

the Rio Grande and its tributaries, both in Colorado and New 

Mexico. The drainage basin of the Rio Grande, exclusive of the 

Pecos, includes between 5,000 and 6,000 square miles of merchantable 

timber land, 6,000 square miles of woodland and sparsely timbered 

land, and 2,000 square miles of burned and cut-over land, the 

remainder being sage brush and open land.

The five largest tributaries are the Conchos, which enters from the 

Mexican side 200 miles below El Paso; the Conejos, which joins the 

Rio Grande just above the Colorado-New Mexico line; the Chama, 

which enters it in the Espanola Valley; the Pecos, which joins it in 

the southwestern part of Texas; and Devils River, about 50 miles 

below the Pecos. Most of the remaining tributaries are intermittent 

in character.

The mountains at the headwaters reach altitudes up to 14,000 feet 

above sea level. ' At Albuquerque, N. Mex., the elevation of the river 

is 5,000 feet, and it leaves the territory at an elevation of about 

4,000 feet.

The rainfall varies greatly from year to year and from source to 

mouth,- its irregularity making it very difficult to give averages. 

The annual precipitation in the mountainous district of Colorado 

that is, along the upper Rio Grande ranges from 15 to 25 inches. 

In the northern part of New Mexico it ranges from 10 to 15 inches 

and in the southern part from 5 to 12 inches.

In the mountains of Colorado the river is covered with a foot or 

more of ice from early in the winter until late in the spring. During 

severe winters the river is frozen over at times in northern New 

Mexico, and the snowfall is often very heavy. From the melting of 

the snows in Colorado and New Mexico come the spring floods.

Irrigation is now practiced extensively in the following valleys 

along the Rio Grande and its smaller tributaries:

1. San Luis Valley, beginning a short distance above Del Norte 

and extending to the mouth of Conejos River. This district contains 

probably the largest cultivated area along the Rio Grande, aggregating 

nearly one-half million acres.

2. Valleys of the Taos district, lying on the east side of the river 

below the Colorado line and including the following valleys: Cuesta,
30 SURFACE WATEK SUPPLY, 1907-8.

Kio Colorado, San Cristobal, Arroyo Hondo, and Taos. The Taos 

Valley far surpasses the others both in water facilities and in area 

cultivated.

3. Espanola Valley, located south of the Taos district and Tres 

Piedras Mesa. It lies along the river, and, as in the Taos country, 

agriculture has been engaged in for years.

4. Albuquerque district, including the valley from Pena Blanca to 

San Marcial. The system of irrigation is practically the same as 

the old Pueblo Indian system. In the last few years, however, new 

settlers have adopted progressive methods and have greatly increased 

the duty of water.

5. Mesilla Valley, next to the San Luis, is the most important 

agricultural area along the Rio Grande. The valley broadens just 

below Selden and continues generally broad and fertile for a distance 

of 35 miles or beyond the Texas line. A view of the Leasburg 

diversion dam of the Rio Grande project of the United States 

Reclamation Service is presented in Plate III, A.

Along the Rio Grande and its tributaries in Colorado and New 

Mexico are available reservoir sites equal to storing of all flood waters. 

The largest reservoir in the country is about to be built near Engle, 

N. Mex. It will impound 2,500,000 acre-feet of water for the irrigation of 200,000 acres of land in New Mexico, Texas, and Mexico.

The estimated power possibilities of the Rio Grande and its tributaries from its source to El Paso, Tex., are theoretically as follows:

Minimum horsepower........................................ 123,500

Minimum horsepower, 6 high months......................... 241,000

Horsepower from storage 6 months period....................... 405,000

Developments will, however, be made chiefly on the upper tributaries in Colorado and a few of the mountain streams in New Mexico, 

and will not amount to more than 100,000 horsepower. At present, 

very few water-power plants of any importance are operated in the 

drainage basin. The waters of the Rio Grande have been used only 

for irrigation and domestic purposes, but some of the tributaries have 

also been used hi mining.

The wettest years on the upper Rio Grande appear to be 1906 and 

1907; 1902 and 1908 are low-water years.

The determination of the amount of water in the Rio Grande is of 

importance, both on account of its use in irrigation and from its 

bearing upon interstate and international distribution of water. 

Most of the New Mexico and all the Texas stations down to Eagle Pass 

are maintained by the United States section of the International 

Boundary Commission. The data for the following stations have 

been collected by W. W. Follett, consulting engineer for the commis-
U. S. GEOLOGICAL SURVEY WATER-SUPPLY PAPER 248 PLATE III

A. LEASBURG DIVERSION DAM AND INTAKE GATES OF MAIN RIO GRANDE CANAL, RIO GRANGE

PROJECT, NEW MEXICO.

B. WEIR AND SCOUR GATE IN MAIN INLET CANAL AT INLET OF HONDO RESERVOIR, HONDO

PROJECT, NEW MEXICO.
KIO GRANDE DRAINAGE BASIN. 31

sion, and have been furnished through the courtesy of Gen. Anson 

Mills, commissioner.

Rio Grande near San Marcial, N. Mex.

Rio Grande near El Paso, Tex.

Rio Grande above Presidio, Tex.

Rio Grande below Presidio, Tex.

Rio Grande near Langtry, Tex.

Rio Grande near Devils River (below mouth), Texas.

Rio Grande at Eagle Pass, Tex.

Pecos River near Moorhead, Tex.

Devils River near Devils River Station, Tex.

On account of the shifting ~ character of the river beds at the International Boundary stations, no rating tables have been prepared. 

The estimated monthly discharges are from daily discharges computed 

by Mr. Follett directly from the discharge measurements.

The five stations from Laredo down (Laredo, Roma, Brownsville, 

Salado near Guerrero, and San Juan at Santa Rosalia ranch) are 

maintained by the Mexican section of the commission.

The following is a list of the gaging stations maintained in the Rio 

Grande drainage basin, with the exception of the Pecos River stations, together with the length of records:

Rio Grande near Creede (Wason), Colo., 1907-8.

Rio Grande near Del Norte, Colo., 1889-1908 except 1907.

Rio Grande near Lobatos (Cenicero), Colo., 1899-1908.

Rio Grande near Alamosa, Colo., 1894, 1895, 1903.

Rio Grande near Embudo, N. Mex., 1889-1903.

Rio Grande near Buckman, N. Mex., (Rio Grande near San Ildefonso) 1895-1905.

Rio Grande near San Marcial, N. Mex., 1895-1908.

Rio Grande near El Paso, Tex., 1889-1893, 1897-1908.

Rio Grande near Fort Hancock, Tex., 1900-1903.

Rio Grande above and below Presidio, Tex., 1900-1908.

Rio Grande near Langtry, Tex., 1900-1908.

Rio Grande near Devils River (below mouth), Tex., 1900-1908.

Rio Grande near Eagle Pass, Tex., 1900-1908.

Rio Grande near Nuevo Laredo, Tamaulipas, Mexico, 1900-1903.

Rio Grande near Laredo, Tex., 1903-1908.

Rio Grande near Roma, Tex., 1900-1908.

Rio Grande near Brownsville, Tex., 1900-1908.

Conejos River near Mogote, Colo., 1899, 1900, 1903-1908.

Chama River near Abiquiu, N. Mex., 1895-1897.

Santa Fe Creek at Santa Fe, N. Mex., 1907-8.

Mimbres River near Fay wood, N. Mex., 1908.

Cameron Creek at Fort Bayard, N. Mex., 1907-8.

Stephens Creek at Fort Bayard, N. Mex., 1907-8.

Devils River near Devils River, Tex., 1900-1908.

Rio Salado at Guerrero, Tamaulipas, Mexico, 1900-1908.

Rio San Juan at La Quemada, Tamaulipas, Mexico, 1900-1902.

Rio San Juan at Santa Rosalia ranch, Tamaulipas, Mexico, 1902-1908.
32 SURFACE WATER SUPPLY, 1907-8.

RIO GRANDE PROPER. 

EIO GRANDE NEAE CEEEDE, COLO.

This station, which was established April 24, 1907, to obtain information concerning the quantity of run-off of the upper Rio Grande 

available for storage, is located at the three-span highway bridge 

one-quarter mile south of Wason siding, on the Creede branch of the 

Denver and Rio Grande Railroad, about 3 miles from Creede, the 

terminus of the line, and is a few miles above the site of the proposed 

dam and reservoir.

Willow Creek £or Goblin Creek) enters the river a short distance 

upstream from Wason, and Goose Creek comes in at Wagon-wheel 

Gap about 5 miles below. The drainage at the station is about 700 

square miles.

Except for a little meadow irrigation, no water is diverted above 

this station. Two or three reservoirs are about to be constructed on 

the upper waters of the Rio Grande and its tributaries above Wason. 

Among others may be mentioned the Farmers' Union Irrigation 

Company's reservoir on the main stream, about 35 miles above. 

The proposed reservoir near Wason will have a capacity almost equal 

to the normal annual flow of the river.

The winters are long and very severe in this locality, and the 

stream has a heavy ice cover for several months. The bridge piers 

cause eddies which materially affect the accuracy of measurements. 

The river channel is rough, and the velocity high at flood stages, so 

that results obtained at this station at high stages are only fair. The 

low and medium water portions of the rating are excellent. For illustration of rating curve for this station see figure 1, page 21.

The datum of the gage has not been changed since the station was 

established.

Discharge measurements of Rio Grande near Creede, Colo., in 1907 and 1908.

Date.

1907. 

April 24........

May 15.........

June 14........

July 22.. .......

October 9......

November 9 ...

1908. 

March 29.......

May 17.........

June 12........

July 14.. .......

November 16...

Do.........

Hydrographer.

.....do..............................................

.....do..............................................

.....do..............................................

C. L. Chatfleld.....................................

J. B. Stewart.......................................

.....do..............................................

.....do..............................................

Width.

Feet. 

116

116

116

116

116

116

101

95

69

114

115

 116

60.5

Area of 

section.

Sq.ft. 

249

280

594

411

364

192

158

134

317

461

289

95

118

Gage 

height.

Feet. 

1.45

1.67

4.38

4.49

2.88

2.30

.86

.47

.37

2.10

3.35

1.69

- .05

.21

Discharge.

Sec.-ft. 

759

962

4,350

4,260

2,090

1,460 281

230

196

1,220

2,750

897

86

150
KIO GRANDE. 33

Daily gage height, in feet, of Rio Grande near Creede, Colo.,for 1907 and 1908. 

[Henry H. Wason, observer.]

Day.

1907. 

1...... .............

2...................

3...................

4...................

5...................

C.. .................

7........ ...........

8...................

9...................

10...................

11...................

12...................

13...................

14...................

15...................

16...................

17...................

18...................

19...................

20...................

21...................

22...................

23...................

24...................

25...................

26...................

27...................

28...................

29...................

30...................

31...................

1908. 

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

Mar.

0.3

.3

.3

.25

.3

.3

.3

.3

.3

.3

.3

.35

.3

.35

.4

.4

.3

.35

.4

Apr.

1.45

1.58

1.55

1.62

1.60

1.58

1.52

.5

.5

.5

.5

.55

.6

.6

.65

.8

.85

g

1.1

1.2

1.3

1.6

1.65

1.7

1.65

1 45

1.35

1.35

1.25

1.2

1.0

.95

1.0

1.0

1.0

May.

1.58

I

KK

1.58

1.60

I

KK

1 Zfl

1.45

1.40

1.50

1.85

2.15

2.05

1 7H

1.75

i on

2.45

2.88

3.45

O QA

3.95

4.20

3 90

3 or

o f\n

2 98

2.85

2.70

2.68

1.6

1 9

1 9

1 9

1.75

1 ?!;

1.7

1

0

1 9

i 7f;

1.6

1.5

1.5

1.4

1.4

1

0

2 fl

2.5

2.85

3 fl

2.5

2.5

2

1

1 9

1

0

2.2

2 fl

1 95

1 95

9 7

2.6

June.

2.70

2.70

2.80 111?

3.70

3.85

4.10

4.20

4 50

4

QA

4

70

4.55 4. it;

3.90

4 05

4 40

4

00

5.05

5.08

9 Q

2.85

2.95

2.85

2

0

3.0

2

-7K

2.4

3.0

3.8

3.9

3.6

3.6

3.6

3.55

3.6

3.6

3.2

2.65

2 "7

9 O

2.9

2.9

9 QK.

^ ft

2.85

2

0

2.7

2.55

2.5

July.

5.40

5.32

5.25

5.10

5.08

5.02

4.85

4.78

4.55

4.60

3.00

3.02

2.80

2.68

2 79

3.00

9 QQ

2.65

2.58

2.40

2.30

2.3

2.3

2 9

2.2

2.0

2 A

1

0

1.7

1.75

1.9

1.8

1.75

1.7

1.7

1.7

1.6

I

KK

1

AK

1.4

i ?

1.3

1

O

1 ^

1.4

1.35

1.4

1.2

1.2

1 9

1.6

Aug.

2.22

2.20

2.15

2.08

2.12

1 98

2.02

1.90

1.82

1.75

1.70

2.05

2.38

2.15

1 95

1.88

1.72

1 60

1.58

1.48

1.48

1.42

1.40

1.42

1.48

1

OQ

1.38

1.50

2.28

2.15

1 9 "

2.4

1 Q

1.8

1.6

1 P»P»

1.5

1.45

I

ftC

1.55

1.45

1.35

1.2*

. 1.35

1 ?e;

1.3

1 A.t\

2.05

1.85

1.75

1.6

1.55

1 4.K.

1.4

1.25

1.25

1.2

1.2

1.3

1.2

1.1

Sept.

1 98

1 95

1.85

1.75

i 4n

1.42

1.35

1.32

1.32

1.35

1.28

1.28

1.25

1.22

1.22

1.20

1 99

1.22

1.20

1.18

1.15

1.10

1.00

1 05

QP;

.92

1.00

98

.92

.92

1.1

1.1

g

.8

QK

.8

.75

.7

.65

.7

.7

.7

.7

.65

.65

.6

.6

.65

.55

.55

KK

.5

.55

.55

.55

.5

.65

.55

.55

Oct.

0 90

.85

.80

.82

.82

.85

.85

.82

.75

.75

.75

.70

.68

.70

.65

.65

.62

.62

.68

.72

79

.68

- .62

.62

.62

.62

.62

.5

.55

KK

.45

.5

.45

AX

AK

.45

.45

.5

.55

.45

KK

.55

KK

.55

.5

.4

.35

qc

.35

.35

.35

.35

.35

Nov.

0.65

.62

.60

.58

.60

KK

.58

.55

.58

.52

.50

.45

.50

.45

.42

.42

.42

.40

.45

.40

.42

.45

.45

' 40

.40

.42

.42

.35

.4

.35

.35

f;

.35?t;

.3

.4

.35

.3

.35

.3

.25

.25

.08

.25

.2

.2

.2

.2

.15

.2

.2

.2

.15

.15

.25

.15

.05

Dec.

0 48

AK

.45

.42

.48

KA

.45

.48

.48

.52

.50

.58

.

I*-1

NOTE. Ice March 1 to 10,1908; readings approximate. 

24440 IEE 248 10 3
SURFACE WATER SUPPLY, 1907-8. 

Rating table for Rio Grande near Creede, Colo.,for 1907 and 1908.a

height.

Feet. 

-0.10

- .05

.00

.10

.20

.30

.40

.50

.60

.70

.80

.90

Discharge.

Sec.-ft. 

75

86

97

121

147

175

205

240

280

320

365

415

Gage 

height.

Feet. 

1.00

1.10

1.20

1.30

1.40

1.50

1.60

1.70

1.80

1.90

2.00

2.10

Discharge.

Sec.-ft. 

465

520

575

635

700

770

840

915

995

1,080

1,165

1,255

Gage 

height.

Feet. 

2.20

2.30

2.40

2.50

2.60

2.70

2.80

2.90

3.00

3.20

3.40

3.60

Discharge.

Sec.-ft. 

1,350

1,450

1,555

1,660

1,770

1,880

1,995

2,115

2,235

2,485

2,745

3,015

Gage 

height.

Feet. 

3.80

4.00

4.20

4.40

4.60

4.80

5.00

5.20

5.40

Discharge.

Sec.-ft. 

3,285

3,560

3,840

4,130

4,430

4,740

5,050

5,370

5,690

a For illustration of this rating curve see figure 1, p. 21.

NOTE. The above table is not applicable for ice or obstructed-channel conditions. It is based on 17. 

discharge measurements made during 1907-1909 and is well defined.

Monthly discharge of Rio Grande near Creede, Colo.,for 1907 and 1908.

Month.

1907. 

April 24-30. .........................................

May...........:.....................................

July............:....................................

The period. ...................................

1908.

April................................................

May.................................................

July.................................................

Discharge In second-feet.

Maximum.

855 

3,840 

5,180 

5,690 

1,530 

1,150 

415 

300 

280

205 

915 

2,240 

3,420 

1,450 

1,560 

520 

260 

205

Minimum.

735 

700 

1,880 

1,450 

687 

425 

288 

205 

 212

161 

205 

700 

1,560 

575 

520 

240 

190 

109

Mean.

810 

1,660 

3,800 

3,460 

1,020 

629 

337 

236 

239

179 

483 

1,190 

2; 310 

904 

795 

313 

226 

163

Run-off 

(total in 

acre-feet).

11,200 

102,000 

226,000 

213,000 

62,700 

37,400 

20,700 

14,000 

7,110

694,000

11,000 

28,700 

73,200 

137,000 

55,600 

48,900 

18,600 

13,900 

9,700

397,000

Accuracy.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.

B.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

B.

NOTE. Discharge for missing days 1907 and 1908 Interpolated which may give results slightly too low 

for June, 1908. No correction made for ice conditions March 1-10,1908.

RIO GEANDE NEAR DEL NORTE, COLO.

This station, which, was established in the fall of 1889, was originally located about 2 miles above Del Norte, and records were taken 

more or less' continuously until May 16, 1908, when a new station 

was established at the new state highway bridge about 6 miles above 

Del Norte, near the upper edge of the San Luis Valley. Some inflow
EIO GRANDE. 35

takes place between the two points at certain seasons of 'the year, 

so that the mean annual flow at the state bridge is somewhat less 

than that at the old station.

As the station is above all the important diversions, the records 

show the amount of water available for irrigation, and also the 

run-off from a drainage area of 1,400 square miles.

The new station is about 4 miles above the mouth of Los Pinos 

Creek, below the mouth of Wolf Creek, and about 10 miles below 

the mouth of the South Fork of the Eio Grande. The old station 

is just above the mouth of Los Pinos Creek.

The diversions from the Rio Grande and its tributaries above this 

point are all small and are used chiefly for meadow irrigation. They 

represent a very small percentage of the total flow of the stream. 

The largest ditch takes water out at Del Norte, about 2 miles below 

the original station. From this canal and many others diverted at 

various points nearly 300,000 acres of land in Colorado are now being 

irrigated from the Rio Grande.

Numerous small storage reservoirs under construction or in contemplation on the tributaries of the Rio Grande will store a large 

proportion of flood waters, but all the waters of the upper Rio Grande 

have been filed upon.

The flow of the stream is effected by ice for three or four months 

during the winter.

Practically no change was made in the datum of the gage at the 

old station during its maintenance, and this old gage is still being 

used by the water commissioner in that irrigation district of the 

State. The present chain gage is located on the highway bridge, 

and the readings have no determined relation to those taken at the 

old gage.

Very good results can be obtained at the present station except 

when ice conditions prevail.

Discharge measurements of Rio Grande near Del Norte, Colo., in 1908.

Date.

May 166. ......

July 13&. ......

Nov. 17».......

Hydrographer.

J. B. Stewart... ....................................

.....do..............................................

Width.

Feet. 

144

156

174

188

176

145

Area of 

section.

Sq.ft. 

355

720

463

722

471

213

Gage

Feet. 

2.27

4.70

2.32

3.75

1.95

e.60

Discharge.

Sse.-ft. 

1,370

4,710

1,450

3,910

1,320

163

a Measurements made at old cable station.

& Measurements made at new state bridge, 3 miles above cable station.

c Gage at old cable station read 0.70 foot.
36 SUKFACE WATEK SUPPLY, 1907-8.

Daily gage height, infect, of Rio Grande near Del Norte, Colo.,for 1908. 

[James G. Duncan, observer.]

Day.

1. ..........................

2...........................

3...........................

5...........................

6...........................

7...........................

8...........................

9. ..................... .....

10...........................

11...........................

12...........................

13...........................

14.. .........................

15...........................

16...........................

17...........................

18...........................

19

20...........................

21...........................

22......................".....

23...........................

24...........................

25...........................

26...........................

27...........................

28...........................

29...........................

30. ..........................

31...........................

Apr.

2.1

2.3

2.1

2.0

1.8

1.9

May.

2.6

2.0

2.1

2.1

2.3

2.6

2.85

3.3

3.5

2.9

2.95

2.8

2.5

2.4

2.5

2.5

2.4

2.35

2.7

3.2

June.

3.1

3.1

3.2

3.25

3.1

3.1

3.0

2.8

3.0

3.5

3.85

3.75

3.7

3.65

3.7

3.65

3.3

2.95

2.9

2.9

3.0

2.95

2.9

2.95

3.5

3.3

3.25

2 85

2.7

July.

2.5

2.4

2.25

2.2

2.2

2.15

2.05

2.05

1.95

1.9

1.9

1.95

1.9

1.85

1.9

1.95

1.9

1.8

1.75

1.65

1.6

1.6

1.6

1.6

1.6

1.6

1.55

1.5

1.4

1.4

1.65

Aug.

1.9

2.15

2.2 -

2.0

1.85

1.85

1.75

1.85

1.7

1.6

1.6

1.55

1.45

1.5

1.55

1.5

1.65

2.1

2.05

1.95

1.9

1.75

1.8

1.65

1.55

1.55

1.55

1.45

1.4

1.3

1.3

Sept.

1.2

1.15

1.15

1.1

1.1

1.05

1.0

1.0

.95

.95

.95

.95

.9

.95

.95

.95

.9

.85

- .85

.8

.8

.85

.85

.85

.85

1.05

.95

.95

.9

Oct.

0.9

.9

.9

.9

.9

.9

.85

.86

.85

.85

.8

.8

.8

.8

71

.75

.8

.85

.85

.85

.85

.75

.75

.85

.8

.75

.8

.8

.8

.8

Nov.

0.8

.8

.8

.75

.75

.75

71

.8

.8

71

.7

.65

.7

.7

.6

.65

.65

.65

.65

.65

.65

.7

.65

.65

.65

. .65

.6

.6

.7

Dec.

NOTE. Gage heights April 16 to May 13 refer to old gage at cable station; from May 16 to November 30 

they refer to new gage at state bridge.

Rating tables for Rio Grande near Del Norte, Colo.

JANUARY 1,1906, TO MAY 15,1908.

Gage 

height.

Feet. 

1.80

1.90 

2.00

Discharge.

Sec.-ft. 

840

930 

1,025

Gage 

height.

Feet. 

2.10

2.20 

2.30

Discharge.

Sec.-ft. 

1,120

1,220 

1.325

Gage 

height.

Feet. 

2.40

2.60 

2.60

Discharge.

Sec.-ft. 

1,435

1,560 

1,670

NOTE. The above table is not applicable for ice or obstructed-channel conditions. It is based on 

seven discharge measurements made during 1906 and 1908, and is well defined. This table applies only 

to the old cable station gage.

MAY 16,1908, TO NOVEMBER 30,1908.

0.60

.70

.80

.90

1.00

L20

1.30

1.40

1.50

1.60

1.70

160

205

255

310

370

435 

605

580

660

740

825

915

1.80

1.90

2.00

2.10

2.20

2.30 

2.40

2.50

2.60

2.70

2.80

2.90

1,005

1,100

1,200

1,305

1,415

1,530 

1,650

1,770

1,900

2,040

2,190

2,360

3.00

3.10

3.20

3.30

3.40

3.50 

3.60

3.70

3.80

3.90

2,520

2,690

2,870

3,060

3,260

3,440 

3,630'

3,830

4,030

4,230

NOTE. The above table is not applicable for ice or obstructed-channel conditions. It is based on 

seven discharge measurements made during 1908-9 and is well defined. This table applies only to the 

new gage at the state bridge.
RIO GEANDE. 37

Monthly discharge of Rio Grande near Del Norte, Colo.,for 1908. 

[Drainage area, 1,400 square miles.]

Month..

Aprill6-30. ....................

May............................

Jnly... .........................

Discharge in second-feet.

Maximum.

1,320 

3.440 

4,130 

1,770 

1,420 

505 

310 

255

Minimum.

840 

1,020 

2,040 

660 

580 

255 

230 

160

Mean.

1,060 

1,690 

2,930 

1,070 

931 

345 

271 

205

Per 

square 

mile.

0.757 

1.21 

2.09 

.764 

.665 

.246 

.194 

.146

Run-off.

Depth in 

inches on 

drainage 

area.

0.42 

1.40 

2.33

.88 

.77 

.27 

.22 

.16

Total in 

acre-feet.

31,600 

104,000 

174,000 

65,800 

57,200 

20,500 

16,700 

12,200

482,000

Accuracy.

B. 

A. 

A. 

A. 

A. 

A. 

A. 

A.

RIO GRANDE NEAR LOBATOS, COLO.

This station was established June 28, 1899, at the state bridge 

about 15 miles east of Antonito, in T. 33 N., R. 11 E.

The station is particularly important because it is located only a 

few miles above the Colorado-New Mexico line, and the records show 

the amount of water passing from Colorado into New Mexico. The 

data are valuable also in connection with the proposed Engle reservoir 

of the United States Reclamation Service, and they will be used in 

the adjudication of all water rights along the Rio Grancle which must 

eventually be made.

Conejos River enters about 7 miles above the station. A large 

part of the normal flow of the river is diverted above this station during the irrigation period. About 450,000 acres of land are irrigated, 

and more will be put under water in connection with some of the proposed reservoir systems above.

Ice usually forms on the river at this point for about three months 

during the winter, but occasionally open-water conditions prevail 

through part of this period.

The datum of the gage has not been changed since the station was 

established. Very good results have been obtained at this station. 

The river channel is quite permanent, being a gash cut in the lava 

rock. Occasionally during low water, some sediment is deposited, 

but it is scoured out in times of flood.
38 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Grande near Lobatos, Colo., in 1907,and 1908.

Date.

1907. 

April 23........

May 14. ........

July 31... ......

1908.

May 19.........

June 10......... Tnlv ! >

Hydrographer".

R. I. Meeker... . ... A ...............................

J. B. Stewart. . .....................................

.....do..............................................

Width.

feet. 

242

242

255

246

238

233

236

233

216

132

Area of 

section.

Sq.ft. 

823

764

1,510

831

424

449

473

474

304

126

111

,3ft

Feet. 

3.70

3.42

6.35

3.76

2.12

2.20

2.35

2.26

1.45

1.50

2.20

Discharge.

Sec.-ft. 

2,570

2,180

6,640

2,720

635

711

803

765

240

236

243

o Made by wading above gage.

6 Made by wading below bridge; ice conditions.

Daily gage height, in feet, of Rio Grande near Lobatos, Colo., for 1907 and 1908. 

[Roman Mondragto, observer.]

Day.

1907.<» 

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

20. ..............

27............... 

28...............

29...............

30...............

01

1908.6 

1...............

2...............

3...............

4...............

5...............

6............... 

7...............

8...............

10

Jan.

2.3 

2.3 

2.3 

2.3 

2.3

2.3 

2.3 

2.3 

2.3 

2.3

2.3 

2.3 

2.3 

2.3 

2.3

2.3 

2.3 

2.3 

2.3 

2.3

2.3 

2.3 

2.3 

2.3 

2.3

2.3 

2.3 

2.3 

2.3

2.3

0 Q

.......

Feb.

2.2

2.2 

2.2 

2.2 

2.2

2.2 

2.2 

2.2 

2.2 

2.2

2.2 

2.2 

2.2 

2.2 

2.2

2.2 

2.2 

2.2 

2.2 

2.2

2.2 

2.2 

2.2 

2.2 

2.2

2.2 

2.1 

2.1

.......

Mar.

2.1 

2.1 

2.1 

2.1 

2.05

2.05 

2.1 

2.1 

2.1 

2.0

2.0 

2.1 

2.1 

2.1 

2.1

2.0 

2.0 

2.1 

2.1 

2.25

2.7 

2.95 

3.0 

3.0 

2.9 -

2.85 

2.75 

2.7 

2.65 

2.6

2

KK

1.95

2.0

2.1

2.15 

2.2

9 9

2.15 

21

9. n

Apr.

2.5 

2.5 

2.45 

2.3 

2.45

2.6 

2.6 

2.4 

2.55 

2.8

2.95 

3.2 

3.6 

4.05 

4.3

4.5

4.4 

4.3 

4.2 

4.05

3.8 

3.8 

3.65 

3.5 

3.35

3.1 

3.0 

2.95 

2.9 

3.0

2.1

2.1

2.1

2.0

2.0 

1.95

1.9

1 Q

1 Q

May.

3.2 

3.3 

3.3 

3.15 

3.0

3.15 

3.05 

2.95 

2.9 

2.9

2.9 

3.0 

3.1 

3.3 

3.3

3.15 

3.15 

3.45 

3.85 

4.1

4.8 

5.25 

5.75 

6.15 

6.4

6.35 

6.05 

5.45 

5.05 

4.8

A 7R.

1.95

2.1

2.2

2.3

2.45 

2.3

2.1 

2.1

2 2

June.

4.7 

4.5 

4.4 

4.75 

5.1

5.45 

5.65 

5.95 

6.2 

6.3

6.3 

6.32 

6.15 

6.15 

6.35

6.7 

6.8 

6.8 

6.8 

6.94

6.89 

6.69 

6.44 

6.19 

6.04

6.04 

6.24 

6.33 

6.48 

6.58

2.1

2.1

2.25

2.4

2.4

2.3 

2.35

2.25 

2.2

7.3

July.

6.7 

6.85 

7.0 

6.95 

6.85

6.65 

6.5 

6.4 

6.35 

6.15

5.95 

5.75 

5.50 

5.30 

5.55

5.65 

5.6 

5.35 

5.0 

4.55

4.3 

4.2 

4.2 

3.95 

3.6

3.6 

3.85 

4.05 

4.05 

3.9 

3.75

2.55

2.35

2.2

2.2

2.05

2.0 

1.85

1.8 

1.7

I.Sfi

Aug.

3.55 

3.4 

3.5 

3.6 

3.65

3.45 

3.3 

3.2 

3.15 

3.05

3.0 

2.9 

2.8 

2.8 

3.15

3.25 

3.1 

3.0 

2.9 

2.9

2.9 

3.0 

3.0 

2.9 

2.8

2.7 

2.8 

2.9 

2.95 

3.1 

3.3

1.0

1.5

2.1

2.55

2.1 

1.95

1 Q

1.8 

1.8

LS

Sept.

3.75 

3.8 

3.55 

3.25 

3.15

3.0 

2.95 

2.9 

2.8 

2.7

2 7 

2! 6 

2.55 

2.5 

2.4

2.4 

2.4 

2.4 

2.4 

2.4

2.5 

2.4 

2.4 

2.35 

2.3

2.3 

2.3 

2.3 

2.3 

2.15

2.1

2.0

1.9

1.85

1.8

1.8 

1.7

1.7 

1.7

l.fi

Oct.

2.1 

2.1 

2.1 

2.1 

2.1

2.1 

2.2 

2.15 

2.15 

2.15

2.1 

2.1 

2.1 

2.1 

2.0

2.0 

2.0 

2.0 

2.0 

2.0

2.0 

2.0 

2.0 

2.0 

2.0

2.0 

2.0 

2.0 

2.0 

2.0 

2.0

1.5

1.55

1.5

1.5

1.5

1.5 

1.5

1.5 

1.5

1.55

Nov.

2.0 

2.0 

2.0 

2.0 

2.0

2.0 

2.0 

1.9 

1.9 

1.9

1.9 

1.9 

1.9 

1.9 

1.9

1.9 

1.9 

1.95 

1.9 

1.9

1.9 

1.9 

2.0 

1.95 

1.9

1.9 

1.8 

1.8 

1.8 

1.8

1.8

1.75

1.7

1.7

1.7

1.7 

1.65

1.55 

1.45

1.4

Dec.

1.8 

1.8 

1.8 

1.8 

1.8

1.7 

1.7 

1.7 

1.7 

1.7

1.7 

1.7

1.8 

2.45 

2.4

2.4 

2.4 

2.4 

2.4 

2.4

2.4 

2.4 

2.4 

2.4 

2.4

2.4 

2.4 

2.4 

2.4 

2.4 

2.4

......

......

o Ice conditions probably prevailed December 14 to 31, 1907. It is not known to what extent they may

have prevailed during the early part of the year. 

6 Probable ice conditions November 18-30,1908.
BIO GRANDE. & 

Daily gage height, in feet, of Rio Grande near Lobatos, Colo.,for 1907 and 1908 Cont'd.

Day.

1908. 

11............... 

12. ..............

13...............

14...............

15............ ..

16. ..............

17...............

IS...............

19...............

20............... 

21...............

22..... ... . ..

23...............

24...............

25...............

26. ..............

27...............

28. ..............

29............... 

30...............

31...............

Jan.

.......

Feb.

.......

Mar.

2.0 

2.0

2.0

2.05

2.05

2.1

2.1

2.2

2.25

2.4 

2.4

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.2 

2.2

2.2

Apr.

1.9 

1.9

1.9

1.95

2.0

2.1

2.25

2.4

2.4 

2.4

2.35 9 *

2.4

2.4

2.3

2.1

2.1

2.0 

1.8

May.

2.15 

2.1

2.0

2.0

2.0

1.95

2.0

2.15

2.45

2.65 

2.85

2.7

2.6

2.5

2.5

2.5

2.4

2.25

2.0 

2.0

2.0

June.

2.45 

2.85

3.25

3.4

3.4

3.35

3.25

2 95

2.85

2.75 

2.55

2.35

2.2

2.2

2.2

2.25

2.85

3.0 

2.8

July.

' 1.5 

1.4

1.25

1.25

1.4

1.65

1.85

1.8

1.6

1.4 

1.5

1.4

1 3

1.3

1.2

1.1

1.05

1.0

1.0 

1.0

1.0

Aug.

1.75 

1.6

1.65

1.6

1.65

1.75

1.9

1 9

2.05

2.35 

2.55

2.7

2.7

2.6

2.5

2.45

2.4

2.3

2.2 

2.15

2.1

Sept.

1.6 

1.6

1.6

1.55

1.5

1.5

1.5

1.5

1.5

1.5 

1.5

1.5

1.45

1.4

1.4

1.5

1.5

1.45

1.5 

1.5

Oct.

1.55 

1.55

1.55

1.5

1.5

1.5

1.5

1.55

1.6

1.6 

1.6

1.6

1.6

1.6

1.6

1.7

1.7

1.75

1.75 

1.8

1.85

Nov.

1.4 

1.3

1.3

1.2

1.25

1.3

1 45

1.7.

1.7

1.7 

1.7

1.6

1.6

1.6

1.65

1.6

1.7

1.7

1.9 

1.9

Dec.

......

NOTE. Probable ice conditions November 18-30, 1908.

Rating tables for Rio Grande near Lobatos, Colo.

JANUARY 1, 1905, TO APRIL 16, 1907.

Gage 

height.

Feet. 

2.00

2.10

2.20

2.30

2.40

2.50

Discharge.

Sec.-ft. 

475

550

630

715

805

900

Gage 

height.

Fed. 

2.60

2.70

2.80

2.90

3.00

3.10

Discharge.

Sec.-ft. 

1,000

1,110

1,230

 1,350

1,470

1,590

Gage 

height.

Feet. 

3.20

3.30

3.40

3.50

3.60

3.70

Discharge.

Sec.-ft. 

1,710

1,840

1,980

2,120

2,270

2,420

Gage 

height.

Feet. 

3.80

3.90

4.00

4.20

4.40

4.60

Discharge.

Sec.-ft. 

2,580

2,740

2,900

3,240

3,590

3,950

above table is not applicable for ice or obstructed-channel conditions. !

surernents made during 1905-6 and is well denned.

APRIL 17, 1907, TO DECEMBER 31, 1908.

1.00

1.10

1.20

1.30

1.40

1.50

1.60

1.70

1.80

1.90

2.00

2.10

63

91

125

163

205

250

295

345

400

460

530

615

2.20

2.30

2.40

2.50

2.60

2.70

2.80

2.90

3.00

3.10

3.20

3.30

705

, 800

900

1,000

1,110

1,230

1,350

1,470

1,600

1,730

1,870

2,010

3.40

3.50

3.60

3.70

3.80

3.90

4.00

4.20

4.40

4.60

4.80

2,150

2,300

2,450

2,600

2,750

2,^900

3,060

3,380

3,700

4,020

4,360

5.00

5.20

5.40

5.60

5.80

6.00

6.20

6.40

6.60

6.80

7.00

4,700

5,080

5,470

5,870

6,280

6,700

7,120

7,540

7,960

8,380

8,800

NOTE. The above table is not applicable for ice or obstructed-channel conditions. It Is based OB 

discharge measurements made during 1907-8, and is well denned above gage height 1.4 feet.
SURFACE WATER SUPPLY, 1907-8.

Monthly discharge of Rio Grande near Lobatos, Colo.,for 1907 and 1908. 

[Drainage area, 7,700 square miles.]

Month.

1907.

May............................

June ..

July............................

1908.

April...........................

July............................

Discharge in second-feet.

Maximum.

715 

630 

1,470 

3,770 

7,540 

8,670 

8,800 

2,520 

2,750 

705 

530 

390

8,800

900 

900 

1,410 

2,150 

1,060 

. 1,230 

615 

430 

400

Minimum.

715 

550 

475 

715 

1,470 

3,700 

2,450 

1,230 

660 

530 

390 

335

335

495 

400 

495 

615 

63 

63 

205 

250 

125

Mean.

715

624 

779 

1,960 

3,270 

6,900 

5,440 

1,740 

1,230 

576 

473 

358

2,000

678 

629 

765 

1,150 

316 

624 

306 

289 

250

Per 

square 

mile.

0.093 

.081 

.101 

.255 

.425 

.896 

.706 

.226 

.160 

.075 

.061 

.047

.260

.088 

.082 

.099 

.149 

.041 

.081 

.040 

.038 

.032

Run-off.

Depth in 

inches on 

drainage 

area.

0.11

.08 

.12 

.28 

.49 

1.00 

.81 

.26 

.18 

.09 

.07 

.05

3.54

.10 

.09 

.11 

.17 

.05 

.09 

.05 

.04 

.04

Total in 

acre-feet.

44,000 

34,700 

47,900 

117,000 

201,000 

411, 000 

334,000 

107,000 

73,200 

35,400 

27,900 

21,800

1,450,000

41,700 

37, 400 

47,000 

68,400 

19,400 

38,400 

18,200 

17,800 

14,900

303,000

Accuracy.

B. 

B. 

B. 

A. 

A. 

B 

B. 

A. 

A. 

A. 

A. 

C.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

C.

NOTE. Open-channel flow assumed January to March, 1907. Discharge December 14 to 31, 1907, estimated 350 second-feet; November 18 to 30,1908, estimated 240 second-feet.

RIO GRANDE NEAR SAN MARCIAL, N. MEX.

A station was established near San Marcial, N; Mex., August 8, 

1889, and a measurement was made which gave a discharge of 19 

second-feet; but soon after this date the river gage was destroyed 

and the locality was abandoned until January 29, 1895, when the 

station was reestablished at the bridge of the Atchison, Topeka and 

Santa Fe Railway 1 mile south of San Marcial, N. Mex.

The channel is sandy and shifting. A number of bridge piers interfere with the current to a certain extent and sometimes affect the 

discharge measurements, but they do not affect the observed gage 

heights. Measurements are made frequently in order to determine 

closely the daily flow. There is no overflow channel beyond the 

bridge. The section gives gravity flow. The range between high 

and low water is about 8 feet.

The inclined gage established January 29, 1895, was carried away 

in 1896 and a wire gage was put in its place. This gage has since 

been abandoned and the gage heights are now measured with a 

graduated rod from the deck of the bridge, but using the old gage 

datum.
RIO GEANDE. 41

The observations at this station during 1907-8 have been made 

under the direction of the United States section of the International 

Boundary Commission.

Discharge measurements of Rio Grande near San Mardal, N. Mex., in 1907. 

[By Geo. W. King and D. H. Armstrong.]

Date.

February 26........

March 6............

March 18...........

March 21..... ......

March 23...........

March 26...........

March 29...........

April 12. ...........

April 16............

April 19. ...........

April 27............

April 30............

Mays..............

May 6... ...........

May 9..............

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

May 15. ............

May 21.............

May 25.............

May 31. ............

June 21............

June 24............

June 27............

Julys..............

Area of 

section.

Sq.ft. 

248 

183 

321 

251 

237 

338 

278 

249 

212 

331 

298 

313 

346 

350 

353 

292 

362 

391 

376 

290 

275 

245 

194 

273 

312 

178 

262 

507 

658 

429 

501 

495 

483 

435 

500 

756 

1,257 

1,122 

983 

872 

1,018 

1,028 

947 

923 

827 

900 

779 

1,073 

1,269 

1,837 

1,716 

1,710 

1,554 

1,620 

1,694 

1,698 

1,824 

1,598 

1,765 

2,051 

1,698 

1,419 

1,296 

1,322

Gage 

height.

Feet. 

8.4 

8.0 a4 a4 

as

8.7 

8.3

as 

as 

ae

8.7 

8.7

ae

8.7 

8.6 

8.5 

8.7 

8.8

as

8.7

ae 

ae 

ae

8.7

as

8.4

ae

9.35 

9.5 a9

9.0 

9.0 

9.0 

9.0 

9.0 

9.8 

10.7 

10.4 

9.7 

9.4 

9.7 

9.7 

9.7 

9.55 

«4 

9.7 

9.7 

10.0 

10.7 

11.4 

11.3 

11.1 ias

10.3 

Itt9 

10.7 ia 5 lag

11.3 

11.6 las ia2

9.7 

10.0

Discharge.

Sec.-ft. 

1,033 

683 

901 

1,139 

970 

- 1,423 

1,130 

772 

860 

970 

1,110 

1,350 

1,187 

1,227 

1,062 

1,106 

1,190 

1,305 

1,456 

1,400 

1,239 

952 

903 

1,190 

1,147 

713 

1,135 

2,425 

2,981 

2,480 

2,181 

1,856 

1,918 

2,160 

1,878 

3,754 

5,810 

5,708 

4,954 

4,041 

3,871 

4,743 

4,339 

3,904 

3,854 

4,269 

4,093 

5,164 

6,318 

9,358 

11,067 

9,697 

7,406 

8,804 

9,660 

9,344 

9,508 

9,342 

10,218 

11,679 

9,207 

7,652 

7,148 

7,318

Date.

July 6........ ......

July 9........ ......

July 12.. ...........

July 15.. ...........

July 18... ..........

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

July 24... ..........

July 27... ..........

July 29... ..........

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

August 12..........

October 18.........

November 29. ......

December 24

Area of 

section.

Sq.ft. 

1,347 

1,309 

1,196 

1,073 

1,027 

888 

677 

754 

755 

597 

600 

600 

524 

410 

306 

246 

564 

815 

514 

1,064 

1,120 

2,033 

856 

591 

362 

328 

416 

457 

1,174 

1,463 

497 

280 

309 

297 

280 

303 

188 

237 

241 

255 

419 

305 

283 

264 

210 

214 

200 

230 

260 

217 

222 

249 

225 

227 

223 

212 

203 

177 

142 

164 

200 

216 

210

Gage 

height.

Feet. 

10.3 

10.0 

9.7 

9.4 

9.5 

9.2 

8.7 a9

9.1

8.6 a^

8.8

ae

8.3 

8.2 

8.0 

9.1 

9.5 

9.0 

10.4 

10.6 

12.0 

9.8 

9.7 

9.3 

9.4 

9.4 

9.6 

10.7 

11.7 

9.1 

9.0 

9.2 

9.1 

9.2 

9.3 

9.2 

9.4 

9.5 

9.6 

9.9 

9.3 

9.2 

9.2 

9.3 

9.3 

9.3 

9.3 

9.5 

9.4 

9.6 

9.5 

9.5 

9.6 

9.6 

9.5 

9.6 

9.5 

9.3 

9.4 

9.5 

9.6 

9.5

Discharge.

Sec.-ft. 

7,529 

7,732 

6,027 

5,462 

5,106 

4,111 

3,273 

3,138 

3,244 

2,555 

2,595 

2,780 

2,152 

1,698 

1,139 

950 

2,410 

4,066 

2,171 

5,540 

5,701 

11,458 

3,962 

2,591 

1,921 

1,476 

1,442 

* 2,064 

5,276 

6,871 

1,649 

1,082 

1,000 

760 

794 

g29 

814 

894 

988 

893 

1,591 

1,450 

1,416 

1,189 

984 

868 

859 

913 

1,009 

905 

998 

948 

700 

817 

828 

824 

831 

678 

602 

586 

617 

738 

599
42 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Grande near San Martial, N. Mex., in 1908, 

[By G. W. King.]

Date.

March 10. ..........

Marrh 22.. .........

March 28...........

Aprils.............

A nr i l n

April 12.. ..........

April 15.. ..........

April 19............

A «ri 1 99

April 25. ...........

April 28... .........

April 30. ...........

May 9... ...........

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

May 15.. ...........

May 18.. ...........

May 22.. ...........

May 25.. ...........

May 28.. ...........

May 31.. ...........

Area of 

section.

8^. ft. 

235

249

274

1QC

184

181

157

200

245

170

917

172

194

160

167

223

OQC

271

291

911

329

241

253

405

397

376

276

307

332

354

329

387

377

881

615

817

579

472

426

611

393

397

477

636

719

854

677

483

436

531

542

283

301

470

Gage 

height.

Feet. 

9 7

9 8

9.8

9 7

9 7

9

0

9

0

9 7

9.7

9 7

9.6

9.6

9.5

9.7

9 7

9 7

9.9

9.7

10.2

9 a

10.0

9.7

9.5

10.2

10.4

10.0

9.9

9.7

9.7

9.9

10.1

11.5

10.5

10.8

10.5

10.2

10.1

10.9

10.1

10.4

10.6

10.6

11.1

11.1

10.8

10.3

10.3

10.4

10.5

10.2

10.2

10.5

Discharge.

Sec.-ft. 

854

922

723

648

654

687

736

663

581

686

710

631

810

620

759

566

606

731

1,598

1,029

1,291

1,009

1,321

945

1,097

1,803

1,737

1,504

1,192

1,231

795

865

1,093

1,648

1,978

4,695

3,567

3,254

2,832

2,154

1,578

3,862

2,104

2,113

2,409

2,413

3,625

4.045

3,263

2,189

1,918

1,813

1,679

1,281

1,201

2,094

Date.

June 24. ...........

June 27............

July 3. .............

July 6.. ............

July 9.. ............

July 12. ............

July 15.... .........

July 17.... .........

July 20.. ...........

July 23...... .......

July 26.............

July 29.. ...........

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

Do.............

August 24..........

August 28. .........

August 31..........

September 3 .......

September 9.......

September 12......

September 15.......

October 22.........

October 25. ........

October 28.........

October 31. ........

November 3. .......

November 6. .......

November 12.......

November 15. ......

November 21. ......

November 24.......

November 30. ......

December 6 ........

December 9........

December 12.......

December 15.......

December 21 .......

December 24.......

December 30 .......

Area of 

section.

Sq.ft. 

464

263

217

149

218

170

185

71

155

266

351

151

216

320

212

167

780

379

133

839

230

526

427

228

439

377

184

157

143

123

63

32

7

37

107

127

206

199

192

176

183

144

121

128

189

212-

204

230

210 «

179

264

163

172

193

279

130

Gage 

height.

Feet. 

10.4

10.0

9.8

9.5

9.9

9.7

9.9

9.1

9.65

10.2

10.2

9.0

9.5

9.8

9.5

9.5

11.4

10.6

9.2

12.3

9.8

11.4

10.5

10.1

10.6

11.0

10.2

10.1

9.9

9.8

9.4

9.1

9.2

9.4

9.9

10.0

10.2

10.3

10.3

10.3

10.3

10.2

10.1

10.0

10.5

10.5

10.5

10.6

10.5

10.4

10.5

10.5

10.5

10.4

10.6

10.3

Discharge.

Sec.-ft. 

1,942

1,284

794

537

891

648

905

229

536

1,366

1,503

522

803

983

565

569

3,462

2,330

474

4,987

961

2,942

1,540

870

1,508

1,662

968

586

374

218

103

35

7

71

203

283

431

513

494

515

560

459

373

419

672

757

694

818

786

576

546

569

551

594

712

498
EIO GRANDE. 43 

Do% gageJmght, infest, of Rio Grande near San Mardal, N. Hex., for 1907 and 1908,

Day.

1907. 

I...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

1908. 

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

81...............

Jam

8.3

8.4

8.4

8.3

8.0

8.15

8.2

8.4

8.4

8.4

8 A

8.3

8.3

8.3

8.3

8.3

8.55

8.65

8.5

'8.3

8.3

8.4

8.3

8 A

8.55

8.3

8.3

8.55

8.6

8.65

9.5 

9.65 

9.7 

9.7 

9.8

9.9 

9.8 

9.8

9.7 

9.7

9.7, 

9.7

9.6

9.7 

9.8

9.7 

9.8 

9.8 

9.8 

9.8

9.8 

9.75

9.7 

9.7 

9.7

9.7 

9.7 

9.8

9.8 

9.7 

9.8

Feb.

8.7

8.8

8.8

8.7

8.55

8.5

8.6

8.7

8.7

8.7

8.6

8.55

8.6

8.5

8.55

8.5

8.6

8.6

8.7

8.8

8.89

8.8

8.7

8.8

8.8

8.7

8.7

9.8 

9.65 

9.6 

9.7 

9.6

9.75 

9.8 

9.95

9.75 

9.55

9.5 

9.5

9.55

9.65 

9.7

9.85 

9.75 

9.6 

9.6 

9.7

9.9 

9.9

9.9 

10.2 

10.35

10.4 

10.25 

10.35

9.85

Mar.

87

8.6

8.6

8.5

8.5

8.6

ft f.

8.5

8.6

8.6

8.7

8 7

8.6

8.75

8

Q

8.7

8.55

8 A

8.35

8

K

8.6

9.3

9.45

9.45

9.45

9.3

9.1

9 05

9.25

9.05

9.7 

10.15 

10.2 

9.9 

9.8

9.6 

9.6 

9.6

9.6 

9.9

9.7 

9.7

9.7

9.55 

9.5

9.5 

9.5 

9.7 

10.1 

10.2

10.55 

10.3

10.2 

10.2 

10.0

9.9 

9.8 

9.9

8.9 

9.9

9.9

Apr.

8.9

9 n

8.9

8.85

8.85

9.0

9.2

9.15

8.9

8,8

9.05

Q QK

9.2

9.6

10.6

10.65

10.4

10.5

10.6

10.0

9.7

9.75

9.6

9.3

9.1

9.25

9.65

9.9 

9.65 

9.7 

9.7 

9.7

9.65 

9.5

9 A

9.8 

10.0

10.15 

10.1

10.0

10.1 

10.2

10.1 

10.2 

10.4 

11.2 

10.85

10.7 

10.5

10.4 

10.5 

10.8

10.75 

10.8 

10.55

10.35 

10.2

May.

9.75

9 7

9 65

9.6

9.7

9.7

9 7

9.65

9.6

9.5

9.4

9 4

9 A

9.6

9 7

9.65

9 7

9 65

9 7

10.0

10.1

10.7

11.0

11.3

n q

11.6

n q

11.4

n

qc

11.4

11.1

10.2 

10.2 

10.1 

10.3 

10.8

10.95 

10.55 

in °.

10.1 

10.2

10.2 

10.35-

10.4

10.45 

10.6

10.45 

10.4 

10.5 

10.6 

10.6

10.65 

11.1

11.1 

10.9 

11.0

11.0 

10.85 

10.8

10.8 

10.7 

10.35

June.

10.8

10.65

10.25

10.0

9.9

10.15

10.6

10.9

10.7

10,65

10.65

10.6

10.5

10.5

10.55

11.0

n

9K

11.6

U o

10 9

10.6

10.45

10.35

10.1

9.85

9 OK

9

7K

10.3 

10.45 

10.3 

10.3 

10.4

10.4 

10.4

10.5 

10.4

10.3 

10.2

10.2

10.2 

10.2

10.25 

10.45 

10.45 

10.6 

10.45

10.4 

10.4

10.15 

10.0 

9.9

9.8 

9.8

9 7

9.6

9.5

July.

9 95

10.0

10.05

10.05

10.3

U 9

9.9

9.85

9.85

9

7

9 7

9.45

9 4

9.5

9.5

9.5

9.4

9.2

9.2

9.1

8.65

8.9

8.85

9.1

9 9

8 7

8.55

9.65 

9.5 

9.95 

9.75 

9.8

9.7 

9.7

Q 7

9.8 

9.55

9.45 

9.15

9.1

9.1 

9.35

9.45 

10.6 

10.85 

10.0 

10.5

9.7 

9.4

9.1 

9.0 

9.05

9.3

9.45 

9.65

9.9 

9.6 

9.5

Aug.

8.85

8 7

8 0

9.2

9.0

8.8

8 A

8.85

8.5

8.45

8.3

Q q

8.3

8.3

8 9

8.15

8.3

8.55

9.0

9 6

9.3

8.9

9.05

9.0

9.65

9 4

10.05

12.05

9.65 

9.6 

10.8 

10.4 

10.8

10.25 

9.6 

9.25

10.7 

10.7

10.1 

9.8

9.95

9.85 

10.75

11.35 

10.95 

10.6 

10.6 

10.4

10.15 

10.25

10.35 

10.55 

10.75

10.7 

10.7 

10.9

10.65 

10.5 

10.25

Sept.

11.75

10.3

9.9

9.7

9.6

9.8

9 7

9.65

9.45

9.3

9.3

9.5

9 A

9.35

9 5

9.35

9

K

9.5

9.7

10.4

11.05

9.65

9.2

9.15

9.0

9.0

9.0

9 05

9.2

10.2 

10.1 

10.1 

10.0 

10.1

9.9 

9.8 

9.7

9.8 

9.7

9.5 

9.4

9.3

9.3 

9.15

8.95 

8.75

.......

E;;

Oct.

9.15

9

11;

9.1

9.1

9.1

9.15

9

1

9.1

9.3

9.1

9.1

9 9

9.35

9.4

9.4

9.45

9

K

9.5

9.5

9 7

9.6

9 45

9.4

10.3

9 0

10.05

9.5

9.4

9 9

9.25

9.0

...:...

"9." 2"

9.25 

9.3

9.4

9.55 

9.75 

9.9

9.9 10. e

10.0

Nov.

9.4

9.25

9.1

9.2

9.3

9.4

9.3

9.3

9.3

9.2

9.3

9.35

9.4

9.3

9.3

9.4

9.45

9.5

9.5

9.4

9.45

9.6

9.6

9.6

9.6

9.5

9.5

9.5

9.5

9.5

10.1 

10.1 

10.2 

10.2 

10.3

10.3 

10.3 

10.3

10.3 

10.3

10.3 

10.3

10.3

10.3 

10.3

10.3 

10.2 

10.2 

10.2 

10.1

10.1 

10.2

10.15 

10.05 

10.05

10.1 

10.35 

10.5

10.6 

10.5

Dec.

9.' 6

9.6

9.6

9.6

9.6

9.6

9.6

9.5

9.5

9.5

9.5

9.6 9.6"

9.6

9.55

9.5

9.5

9.3

9.3

9.25

9.4

9.5

9.5

9.5

9.5

9.5

9.6

9.7

9.7

9.55

9.5

10.4 

10.5 

10.5 

10.6 

10.5

10.6 

10.5 

10.4

10.5 

10.5

10.4 

10.4

10.4

10.5 

10.5

10.45 

10.55 

10.5 

10.45 

10.4

10.45 

10.55

10.5 

10.4 

10.4

10.4 

10.55 

10.45

10.35 

10.3 

10.4

NOTE. No flow September 18-October 21,1908.
44 ^ SURFACE WATER SUPPLY, 1907-8.

Daily&ischarge, in second-feet, of Rio Grande near San Martial, N. Mex.,for 1907 fmd 4908.

Day.

1907. 

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...........

1908. 

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...........

Jan.

1,010

980

ol,035

1,035

945

o685

765

795

a900

980

1,060

ol, 140

1,030

1,000

.o970

970

970

ol,2S5

1,385

1,275

ol, 130

1,010

970

o770

860

995

i860

860

950

1,010

650

o815

855

855

935

790

o725

650

650

a650

650

580

o655

710

630

o685

705

720

o735

735

700

a665

635

610

o580

605

715

740

o685

765

Feb.

1,080

ol,060

1,290

1,370

ol,350

1,180

1,110

ol,190

1,230

1,230

ol,230

1,100

ol, 060

1,020

1,100

1,150

1,150

ol, 190

1,300

1,360

ol,300

1,270

1,410

1,400

1,400

815-

o750

685

740

695

o770

690

600

o620

620

655

o725

695

735

510

520

o605

730

730

o730

1,230

1,490

ol 600

1,490

1,640

ol,180

Mar.

1,390

1,250

ol,240

1,040

950

o950

840

820

o900

960

1,130

ol,190

1,140

ol,150

1,040

870

o710

740

960

ol, 130

1,250

o2, 350

2,710

2,810

o2,720

o2,260

1,030

1,260

ol, 290

1,150

1,100

ol,010

1,010

1,010

1,010

ol, 240

1,040

990

o945

935

1,000

ol,100

1,170

1,380

ol,730

1,800

2,010

«1,680

1,620

1,620

ol,500

1,350

1,190

ol,190

1,200

1,220

1,230

Apr.

1,950

1,960

ol, 740

1,700

1,720

ol,920

2,320

2,320

o2,000

1,790

2,040

ol,810

a3,280

4,210

o5,580

5,780

o5,710

6,450

7,500

7,500

5,800

«4,950

5,110

4,650

03, 840

3

1 on

3,230

«3, 770

1,150

. 825

o795

820

o815

635

750

o980

1,340

1,700

ol,650

1,490

1,730

ol,980

1,770

2,400

o4,070

3,960

o3,570

3,160

3,060

o3,25ft

O 1 Of\

3,250

o2,900

2,490

o2, 150

May.

4,260

4,450

o4,640

4,410

4,470

04,340

4,340

4,190

o4,050

3,890

3,770

o3,850

3,850

4,130

o4,270

4,110

4,150

4,090

5,160

05,340

o 6, 320

7,620

8,920

10, 360

oll,470

11 080

o9,700

2,030

1,900

ol,580

2,150

3,570

3,090

2,540

o2,100

2,110

1,960

o2,040

2,110

2,190

o 2, 410

2,180

2, 110

o2,260

2,410

2,410

2,530

3,760

3,420

o3,800

3,780

3,390

o3,260

3,260

3,050

June.

8,840

8,410

o7,330

7,010

6,930

6,770

o8,040

9,240

o9,660

9,340

9,260

o9,140

9,430

9,520

09,510

9,190

09,120

.9,560

olO.llO

oll,680

11,000

10,100

09,430

8, 950

a 7, 550

7,290

7,290

07,190

2,100

2,220

ol,920

1,840

1,890

o 1,810

1,720

1,630

ol,680

1,550

1,420

ol,280

1,250

1,230

ol,200

1,420

1,870

o2,020

2,250

2,020

ol,940

1,940

1,530

ol,280

1,080

o790

710

620

o535

July.

7,260

7,290

o7,320

7,350

7,350

o7,530

7,600

7,860

o7,530

7,060

6,700

«6, 030

6,030

5,560

o5,460

5,460

5,280

o5, 110

4,770

4,610

o4, 110

4,110

3,940

03, 190

2,960

3,290

03, 160

o3,400

2,690

o2,490

670

535

o950

710

770

o650

650

650

o820

610

525

o270

230

o370

415

2,390

1,160

ol,750

1,090

845

o600

520

550

775

895

ol, 120

705

565

Aug.

2,810

2,420

o2,590

3,200

2,990

o2,780

2,360

2,650

o2,000

1,920

1,700

ol,700

1,560

1,430

ol,140

1,090

990

o950

1,350

1,680

a2, 280

3,840

o3, 670

2,570

2,570

o2, 170

o5,050

3,960

3,380

o4 600

10,050

750

690

o2,540

2,050

o2,620

1,860

1,000

o540

o2,660

2,410

1,440

o960

1,150

1,020

o2,140

2,860

2,240

al,690

1,710

1,370

o950

1,060

1,190

ol,440

1,570

1,550

1,550

ol,620

1,360

1,230

ol,010

Sept.

olO, 610

5,660

4,300

o3,760

3,170

3,180

o2,590

2,510

2,170

ol,920

1,710

1,890

ol,480

1,360

1,650

al,340

1,720

1,790

o2,360

3,820

o4,400

2,750

1,850

1,190

940

875

675

o585

480

585

270

165

o220

190

130

o!0580*

80

25

10

Oct.

905

855

o760

760

760

760

760

o830

800

800

0815

875

895

o895

940

o990

990

990

1,190

o895

820

o795

2,230

1,590

1,740

ol,520

1,490

1,420

ol,430

1,220

05

25

40

070

110

160

o205

205

285

o285

Nov.

1,440

1,230

1,010

1,000

o985

1,020

905

o870

865

780

o860

915

975

o915

915

960

o985

1,010

1,010

o905

930

1,000

ol,000

1,000

1,000

865

780

o700

700

355

355

o430

430

515

o515

505

500

o495

500

510

o515

530

545

«560

560

460

o460

460

375

o375

455

460

o445

445

470

700

810

o755

Dec.

815

o815

820

825

o830

840

850

o825

815

810

800

o830

805

785

0720

680

680

o600

585

545

o585

615

615

. o615

630

o740

800

780

600

685

715

o695

770

745

o820

785

755

o785

735

630

o575

550

570

o545

530

585

o570

540

505

o525

590

580

o545

565

EQrt

605

535

o500

550

a Dates of measurement. 

NOTE. No flow September 18-October 21,1908.
EIO GKANDE. .45

Monthly discharge of Rio Grande near San Marcial, N. Mex.,for 1907 and 1908.

Month.

* 

1907.

March.*...............................................

April. . . m ...............................................

Maj...^.... ............................................

July... f!l. ...... ........................................

1908.

July.....................................................

Discharge in second-feet.

Maximum.

1,385 

1,460 

2,£80 

7,500 

11, 470 

11,680 

7,860 

10,050 

10,610 

2,230 

1,440 

850

11,680

935 

1,640 

2,010 

4,070 

4,000 

2,250 

2,390 

2,860 

875 

285 

810 

820

4,070

Minimum.

685 

1,020 

710 

1,700 

3,770 

6,770 

2,490 

950 

940 

760 

700 

545

545

580 

510 

935 

635 

1,580 

535 

230 

540 

0 

0 

355 

500

0

Mean.

986 

1,219 

1,505 

3,745 

6,001 

8,809 

5,346 

2,692 

2,704 

1,048 

949 

727

2,961

710 

834 

1,258 

2,083 

2,688 

1,521 

796 

1,556 

163 

45 

503 

625

1,065

Run-off 

(totaMn 

acre-feet).

 60,635 

67,696 

' 92,549 

222,863 

368,965 

1 524,192 

'.* 328,740 

& 165,521 

 jt 160,899 

-If 64,453 

*- 56,489 

44,707

2,157,709

43,636 

47,970 

77,375 

123,927 

165,263 

90,516 

48,952 

95,663 

9,709 

2,757 

29,931 

38, 410

774,109

RIO GEANDE NEAE EL PASO, TEX.

This station was located at the pumping house of the smelter company, 3 miles north of El Paso, Tex. The bed of the stream at that 

point is composed of mud, and is constantly shifting and changing. 

May 1, 1897, the station was placed under the charge of W. W. Follett, consulting engineer, International Boundary Commission, and 

by him removed 1 mile farther up the river to Courchesne's limekiln. Although the section is unstable and subject to overflow, 

it is still the best site for a station in the vicinity of El Paso, as the 

entire bed is constantly shifting for many miles above and below. 

On this account frequent discharge measurements are made in order 

to closely estimate the daily discharge.

River heights were measured at the masonry pump-foundation 

pier. As the pier was torn down in October, 1902, an inclined 

wooden gage was established some 60 feet upstream and later the 

gage was removed 300 feet downstream.

The observations at this station during 1907-8 have been made 

under the direction of the United States section of the International 

Boundary Commission.
46 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Grande near El Paso, Tex., in 1907. 

[By W. L. Follett and E. E. Winter.]

Date.

Marchl2...........

March 18. ..........

March 21...........

March 27.... .......

VTarph 9Q

Aprils.............

April 6.... .........

April9. ............

April 15.. ..........

April 17............

April 21.. ..........

April 24............

April 27... .........

April 30. ...........

Mays..............

May 6..... .........

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

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

May 15.............

May 21..... ........

May 25...... .......

May 28..... ........

May 30. ............

June 20............

July3..............

Area of 

section.

Sq.ft. 

358

277

267

302

413

323

295

241

195

214

384

449

394

O7C

267

275

272

OKA

229

177

177

m

246

195

1Qft

512

AQQ

363

OO7

339

332

QCQ

639

1,067

1 084

872

576

835

714

645

545

615

670

1,143

1,401

1,473

1,098

1,113

1,148

1,095

1,269

1 MS

1,597

1,207

QQQ

Qoq -

&L

Feet. 

7.9

7.7

7.5

7.75

8.4

8

1

7 S

7.6

7.7

7 Q

8.1

8

(\K

7 Q

7.85

7.7

7

0

7.85

8

(\

7

ce

7.7

7.6

7 Q

7.85

7.4

7.4

8

QC

9 15

8 Q

8.65

0 JC

8 A

8.4

8

0

9

0

11.15

n

o

10.85

9

QC

9

Ati

in nf\

10.0

10.0

9.4

9 9

9 7

9.65

11.05

12.1

12.6

12.55

11.4

n

o

n

o

11.95

n

ne

12.3

19 ±x*

13.05

U o>;

11.1 in Q

Discharge.

Sec.-ft. 

941

837

718

948

1,253

1,399

1 '961 208

632

658

1,000

918

QAK

801

 784

7*1

819

951

S9J.

585

CQ7

097

499

CflQ

2,058

2,377

1,742

1 4.37

1,414

1 qqq

1,311

3,351

e 901

6,064

5,481

3 717

2,915

4,140

3

7OO

3,746

2

JCQ

5,275

7 490

8,993

7,136

5,776

6,928

7,515

fi QPV7

9,024

10,753

5

cno

5,262

Date.

Julys..............

July 12..... ........

July 15. ............

July 18. ............

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

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

July 28...... .......

September 11

Or>fnl"*£»r Q

October 24

December 9

Area of 

section.

Sq.ft. 

1,122

1,082

977

839

822

755

77Q

832

707

552

524

510

373

341

225

461

477

696

834

1,562

821

c^o

420

414

400

712

475

329

257

227

243

211

202

 220

296

263

362

375

2%

270

254

264

240

252

290

281

266

226

253

246

239

259

249

241

224

213

204

223

Gage 

height.

Feet. 

11.3

11.0

10.8

10.25

9.85

9 A

10.2

9.15

9.0

9 ft

8.65

8.3

7

0

7.95

9.4

10.35

10.95 19 s>;

10.55

9

CK

9.0

8.65

8

e

8.6

10.1

9

QC

8.4

7.8

7.6

7.65

7.55

7.35

7.45

7.75

7.85

7.95

S tt

8.65

8.1

s n

7.85

7.95

7.8

7.95

8.2

8.1

8.1

8.0

7.8

8.0

7.9

7.9

7.9

7.85

7.95

7.7

7.65

7.6

7.7

Discharge.

Se'-ft. 

7,651

6,665

6,235

4,917

4,274

0 Q£fi

4,349

3,611

2,476

2,244

2,163

1,133

723

622

2,117

3,508

4,622

8,036

10,562

4,111

2 ane

1,835

1,396

1,123

1,360

3,565

2

*>Qfi

1,303

781

560

531

421

489

529

837

852

1,467

1,488

1.039

927

769

902

752

864

1,106

1,009

944

759

592

803

673

674

658

645

631

563

464

437

515
EIO GEAHDB. 47

Discharge measurements of Rio Grande near El Paso, Tex., in 1908. 

[By W. L. Follett, J. D. Dillard, and T. A. Stiles.)

Date.

MarchS. ...........

March 12.... .......

March 15.... .......

March 18...........

March 21...........

March 23. ..........

March 26... ........

March 29. ..........

April 12............

April 15. ...........

April 18............

April 21. ...........

April 24..... .......

April27............

April 30..... .......

May 3... ...........

May 6.. ...... ......

Mayl7... .........

May 21............

May 24..... .......

May 28... .........

May 31... .........

Area of 

section.

Sq.ft. 

209

214

f)(\A

176

191

198

166

Iftft

178

200

167

000

236

oqj.

212

911

241

249 9f;i

253

264

143

129

391

214

1O9

182

186

132

159

f)AR

349

571

485

456

385

303 272-

000

250

416

517

429

256

height.

Feet. 

8.3

8.1

o n

7.6

7.75

7.9

7.9

7.85

7.85

»r o

7 QH

7.9

O 0

7 9

o n

7.95

7.85

7.9

Q n

asa2

Q 0

a2ai

7.6

7.4

9.1

a 65

a 25

Q fl

ai

7.9

7 K,

7.7

Q K

9.0

10.5

9.9

9 8

Q Q

8.7

9.1

8.6

9 7

in o

9 4

8.65

Discharge.

Sec.-ft.

S14

528

385

432

519

' "W14

484

456

436

AnA

 481

808

532

K91

KAR

K«9

EQO

770

784

523

797

735

281

1,638

1.120

778

612

603

507

264

384

937

1,577

3,333

9 71 f;

2,464

1,876

1 341

1,134

1,616

1,092

2,385

3 nof»

2,084

1 1Q7

Date.

Tune 30. ...........

July3.............

July 10.. ...........

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

July 24.. ...........

July 27.. ...........

July 30.............

August 29..........

Area of 

section.

Sq.ft. 

220

204

189

126

108

232

184

95

35

6

325

202

169

166

165

171

224

333

137

318

229

414

312

226

422

192

303

163

631

115

62

28

27

39

79

104

112

102

226

176

137

220

149

138

141

138

208

236

Gage 

height.

Feet.

a 35

asai

7.6

7.5

8.6

8.2

7.1

6.3

6 2

9.0

8.3

8.2

8.0

8.05

8.15

8.7

9 4

7.7

9.5

8.7

10.2

9.1

a65

10.3

S.7

9.3 ai

11.4

7.7

7.2

6.7

6.5

7 2

7.2

7.3

7.3

7.35

8.1

7.85

7.5

8.1

7.7

7.5

7.6

7.5

8.0

8.2

Discharge.

8ec.-ft. 

898

808

663

363

218 "932

557

129

37

3

1,358

621

591

470

417

529

924

1,395

273

1,504

872

1,977

1,280

822

2,038

627

1,246

389

3,209

229

79

23

22

56

117

180

157

169

524

331

209

516

256

202

224

205

498

557

NOTE. No measurements during October, 1908, as there was no flow.
48 STJEFACE WATEE SUPPLY, 1907-8.

Daily gage height, in feet, of Rio Grande near El Paso, Tex.,for 1907 and 1908.

Day.

1907. 

1...... .........

2...............

3...............

4...............

5...............

6...............

7...............

8..:............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18............... 

19...............

20...............

21...............

22...............

23...............

24...............

25. ..............

26...............

28...............

29...............

30...............

31...............

1908. 

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

Jan.

7.85

7.95

7 Q

8.0

7.8

7.7

7.55

7.5

7.5

7.45

7.45

7.7

7.85

7.95

8.05

8.05

8.9 

8.4

8.15

8.15

8.1

8.0

7.9

7.8

7.75

7.65

7.5

7.6

7.6

7.7

8.0

7.75

7.7

7.8

7.95

8.2

8.2

8.05

8.15

8.1 

7.9

8.05 

8.1

7.9

7.65

7.7

7.7

7.8

7.7

7.75

7.8

7.8

7.95

8.0

7.85

7.9

7.75

7.8

7.9

7.85

Feb.

7.7

7.8

7.85

7.9

7.9

7.95

8.25

8.2

8.1

7.9

'7.9

8.05

7.95

8.0

7.9

7.75

7.9

7.85 

7.8

7.7

7.7

7.65

7.6

7.8

7.75

7 Q

7.9

7.85

7.7

7.8

7.8

7.85

8.0

8.0

8.1

8.0

7.9

7.9 

7.9

8.15 

8.0

7

n

7.9

7.9

7.9

8.0

8.0

8.1

7.95

7.85

7

n

7.85

8.0

8.1

7.95

7.9

8.0

Mar.

7.95

7.9

8.0

8.05

7.85

7.85

7.7

7.7

7.7

7.55

7.5

7.6

7.55

7.65

7 9

7.9

7.9

7.95 

7.7

7.45

7.45

7.35

7.3

7.4

7.6

8.75

8.95

9.2

9.15

8.95

8.2

8.4

8.3

8.0

8.0

8.2

8.3

8.3

8.3

8.2 

8.2

8.2 

8.25

8.4

8.05

8.05

7.9

7.7

7.55

7.45

7.3

8.35

o n

9.0

8.8

8.65

8.6

8.4

8.3

8.15

8.0

Apr.

8.9

8.8

8.65

8.5

8.5

8.45

8.3

8.25

8.35

8.5

8.45

8.4

8.25

8.2

8.55

9.6

10.4 

11.0

11.3

11.2

11.05

11.05

10.55

10.0

9

QK

9.9

9.75

9.5

8.0

8.0

8.2

8.25

8.0

7.95

7.85

7.75

7.6

7.5

7.7

7.75 

8.1

8.55

8.5

8.7

8.9

9.1

9 1

10.0

10.6

in 3

10.0

9.7

9.6

9.7

9.7

9.5

9.5

May.

9.45

9.7

10.4

10.3

10.0

9.95

9.85

9.6

9.5

9.45

9.15

9.2

9.3

9 4

9.7 

9.8

9.8

9.7

9.9

10.2

10.55

11.15

11.8

12.15

12.2

12.55

12 7

12.7

9.3

8.95

8.9

8.9

8.8

8.7

9.2

10.05

9.75

9.35 

9.25

9.15 

8.75

9.0

9.1

9.1

9.15

9.2

9.1

8.85

8.7

9.0

9

0

9 7

10.3

10.25

10.15

10.1

9 75

9.5

9.4

June.

12.65

12.3

11.6

11.35

10.75

10.9

11.2

11.5

11.6

11.75

11.7

U Q

11.85

11.8

11.7

11.9

12.25

12.3

12.5

12.5

13.05

1° 55

12.1

11.85

11.6

11.3

11.0

9.15

8.8

8.5

8.5

. 8.35

8.3

8.4

8.35

8.35 

8.2

8.1 

8.00

7

7K

7.5

7 4.^

7.45

7.4

7.45

8.5

8.45

8.6

8.4

8.3

8.1

7.9

7.75

7.6

7.35

7.15

July.

10.95

10.9

10.8

10.9

11.1

11.2

11.2

11.3

11.3

11.3

11.05

10.95

11.0

10.75

10.8

10.6

10.45

10.3 

10.25

10.3

10.4

10.25

10.1

10.05

9 OK

9.5

9 A

9.6

9.4

9.4

10.2

6.6

6.35

6.25

6.7

6.4

6.25 

6.65

6.3 

6.3

6.3

6.2

8 9

8.55

8.25

7.85

7.4

7.9

7.65

7.9

7.75

Aug.

9.3

9.1

9.1

8.95

8.9

9.15

9.2

8.95

8.9

8.8

8.55

8.4

8.3

8.3

8.1

7.9

7.8 

7.8

8.15

7.95

8.3

8.7

8.85

9 8

9 °5

9.35

8.9

10.5

11.15

10.85

8.4

8.0

7.65

8.0

8.0

8.7

9.25

9.25

8.55

8.05 

7.6

9.0 

9.3

8.65

8.75

8.7

8.9

10.1

9

4r

9 1

8.85

8.5

8.6

8.15

8.55

9.95

9.55

8

QC

8.7

1 9.35

Sept.

10.85

13.0

13.45

11.55

10.3

10.3

9.6

9.8

9.3

9.0

8.75

8.6

8.6

8.5

8.35

8 3

8.5

8.75

8.8

10.15

10.5

10.9

9

C

8

Q

8.1

7.85

7.8

9.35

8.6

8.05

9.7

8.1

7.65

7.6

7.35

7.15 

7.0 '

6.85', 

6.65'

6.4

6.2

6.5

6.4

6

0

6.15

Oct.

7.65

7.6

7.6

7.6

7.6

7.65

7.6

7.6

7.5

7.35

7.35

7.35

7.35

7.35

7.4

7.5

7.65

7.7

7.7

7.8

8.05

7.95

7.95

8.5

9 1

8.55

9.25

9.0

8.6

8.35

.......

.......

Nov.

8.35

8.25

8.1

8.3

8.05

8.0

7.95

7.9

7.9

7.85

7.9

7.95

7.9

7.85

7.8

7.9

8.0

7.9 

7.95

8.1

8.2

8.25

8.1

8.1

8.0

8.1

8.1

7.95

7.95

8.0

.......

-------

7.15

7.2

7.2

7.2

7.25

. 7.3

7

0

7 9.

7.3

7 o.

7.3

7,3

7.3

7.25

7.2

7.35

7.75

Dec.

7.9

7.9

7.8

7.8

7.85

7.95

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.8

7.8

7.95

7.9

7.9 

7.85

7.95

7.95

7.9

7.7

7.7

7.65

7.65

7.65

7.6

7.6

7.65

7.85

8.05

8.1

8.1

8.0

7 9

7.85

7.65

7.8

7.7

7.45 

7.45

7.85 

8.1

8.1

8.05

7.75

7.6

7.5

7.5

7.5

7.5

7.6

7.55

7.55

8.4

8.2

8.05

7.8

7 95

8.55

8.05

NOTE. No flow July 4-7, July 16-19, and September 20-November 13,1908.
RIO GRANDE. 49 

Daily discharge, in second-feet, of Rio Grande near El Paso, Tex., for' 1907 and 1908.

Day.

1907. 

1.. ..........

2............

3............

7............

8............

9............

10............

11............

12............

13............

14............

15............

16............

17............

18............

19............

20............

21............

22............

23

24............

25............

26............

27............

28............

29............

30............

31............

1908. 

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

Jan.

870

965

o940

1,020

900

o835

750

720

o720

675

675

1,070

1,190

ol,295

1,295

1,295

1,970

ol,400

1,240

1,240

ol,210

1,125

1,045

o960

880

760

595

o630

0660 

665

540

515

640

765

690

710

o665

CKK

580

o565

510

0400

415

o450

420

4 en

, d.7^

0545

485

505

o445

455

485

0455

Feb.

690

805

0875

930

945

1,240

i ion

770

780

o905

870

o800

705

825

o800

795

715

645

720

845

850

one

.iqc

o435

455

555

520

480

480

o755

675

585

500

til

605

o565

570

°560

ftCA

0580

560

0595

Mar.

910

860

o950

995

QOC

o825

CCC

625

0585

Knc

CAA

a. ^Qf\

560

fiOC

o825

860

onn

755

540

o540

470

445

o510

710

1,860

o2,060

1 QSA

al,980 

710

830

o770

670

685

o785

741

660

o575

705

o795

830

920

690

cce

0375

290

O7C

o240

1 040

ol'560

1,520

I

onn

ol,120

1,080

910

710

Apr.

1,870

1,820

al 74fl

1,570

1,530

ol,440

1,320

1,290

H,370

1,470

1,400

ol 330

1 940

1,220

al O^fi

4,210

i5, 070

5

QOn

06 060

6,460

05, 810

4 900

3,840

03, 750

3

fLfLf\

590

570

o650

675

555

o530

47 c

415

0325

QOC

660

765

ol,000

QyfA

1 190

ol, 450

1 690

1,690

3 JOft

3 120

2,460

2

O1 f\

2

OOfi

1 900

al 800 '

May.

o qon

3,200

o3,980

4 030

3

QCA

o3,720

3,630

0 3, 650

3,510

3,110

o '' 960

o2,470

2 con

2

70/1

3 onn

3 OCA

a

o o/sn

4,010

6,800

7,520

o7,740

8 840

o9,290

9,630 

1,650

i oon

o 1,340

1,340

1,240

ol,130

1,740

2,770

1,920

1,800

1,680

1,190

1,500

1,620

1,720

1,620

1,350

ol,210

1,560

1,910

o2,380

3

oqn

3

1 en

3,020

2 con

2

01/1

June.

9 780

i9,210

8,520

7,600

5 con

5 640

6

ocn

6,540

nfi SSfl

6 540 7 oon

7,070

06 960

6,770

6,770

o8,040

8

OOA

09, 170

9,170

°10 750

9 440

8,260

6,060

o5,230

1,770

1,320

ol, 100

1,020

a gQQ

845

910

o845

845

70 K

635

455

o305

245

ol55

185

Q7A

840

745

ccn

440

380

930

n 1 K/l

July.

5 1Qft

nd. QSft

7,120

a7,650

7,650

7 650

6,830

°6 560

6,660

6 ion

°6 230

5

Cnn

5,470

o5, 130

5 Ann

5,070

5,240

04 gog

4,590

04,270

3

04/1

3

7O/1

/TO Q7A

3,770

3

77/1

04,350 

75

45

o30

OK

OK

80

oe

oc

95

510

"1 °60

1,515

«605

485

oert

«470

370

455

a 440

one

Aug.

3,720

3

CQA

flO Cert

3 Aon

2,710

ao gQQ

3 Ann

2 480

2,220

2 9Aft

rtO AC/l

1,710

1,380

ol, 130

970

one

o725

650

855

980

1 400

ol,550

2 Cnn.

2,110

/TO OQ/1

1,740

°3 790

5 000

o4,440 

650

o400

OQC

460

o460

Q9C

rti 9QA.

ooc

R/le

1,160

al 360

830

910

o^70

1,020

ol, 910

1,820

i f\nn

ol, 280

1,020

680

450

yen

1 QOA

»850

625

ol,300

Sept.

4,440

<*10,370

6 660

o3,730

3

70/1

o2,680

2,950

2,250

ol,830

1,520

1 qqn

ol,330

1,180

970

o880

1,160

1,020

al,540

1,650

o4,150

4,820

1,760

ol,360

1,040

870

o780

1,280

745

ol,760

1 790

o215

200

125

o75

At)

10

15

10

Oct.

660

ene

540

o530

510

420

420

420

4QC

515

o520

500

o785

1,010

880

o850

1,410

2,020

2,170

1 890

ol 440

1,190

- v - - - -

Nov.

1 190

1,130

1 260

985

o925

875

con

770

900

800

o750

825

900

o825

865

1,010

ol, 110

1,150

1,010

ol,010

885

965

a 945

765

o760

o50

75

95

150

180

180

o!80

170

155

145

135

«170

290

Dec.

675

675

enn

645

o750

695

685

0675

675

585

a 580

710

675

o685

665

a gso

635

505

 IRK

o465

435

435

o475

o635 

490

0525

445

370

a330

260

280

o!85

183

385

o51S

' 485

o290

230

200

o200

200

' 200

o225

215

o235

745

625

0530

365

44Q

785

0495

a Dates of measurement.

NOTE. No flow July 4-7, July 16-19, and September 20-November 13,1908. 

24440 IRR 248 10 4
50 SURFACE WATEE SUPPLY, 1907-8.

Monthly discharge oj Rio Grande near El Paso, Tex.,for 1907 and 1908.

Month.

1907.

March... . ................................................

April... . .................................................

May......................................................

July....................-...-----..........-..-.....--.-..

The year. ..........................................

1908.

April.....................................................

May......................................................

July................... ...................................

Discharge in second-feet.

Maximum.

1,970 

1,240 

2,460 

6,460 

9,630 

10, 750 

7,650 

5,000 

10,370 

2.170 

1,260 

750

10,750

765 

755 

1,560 

3,420 

3,230 

1,770 

1,515 

1,910 

1.760 

0 

290 

785

3,420

Minimum.

595 

645 

445 

1,220 

2,390 

5,230 

3.720 

620 

780 

420 

740 

435

420

400 

395 

240 

265 

1,130 

150 

0 

240 

0 

0 

0 

185

0

Mean.

983 

839 

976 

2,951 

4,381 

7,438 

5,487 

2,200 

2,801 

813 

923 

612

2,634

536 

542 

777 

1,347 

1,901 

675 

265 

954 

240 

0 

85 

380

642

Run-off 

(total in 

acre-feet).

60,436 

46, 621 

60,020 

175,577 

269,355 

442, 612 

337, 408 

135, 263 

166, 671 

50,003 

54,942 

37,636

1,836,544

32,985 

31,170 

47, 752 

80, 132 

116, 866 

40,165 

16,314 

58,641 

14, 261 

0 

5,078 

23,385

466,749

BIO GRANDE ABOVE PRESIDIO, TEX.

The station was established April 4, 1900, by the International 

Boundary Commission. It was originally located 9 miles above 

Presidio and 8 miles above the mouth of Rio Conchos, one of the 

principal tributaries of the Rio Grande, and about 200 miles below 

El Paso. The station was in a straight stretch of the river, but 

in the bighU of a long bend. In 1905 the river began to erode a 

cut-off across this bend, and the spring flood of 1905 deepened this 

channel to such an extent that more-water passed through it than 

through the station, and it became necessary to abandon the location. In September, 1905, the station was moved 8 miles farther 

upstream and rebuilt. Its location is far enough above the mouth 

of Rio Conchos to be free from the effects of backwater from that 

stream.

The river is nearly straight for one-fourth mile above and below 

the new location. Both banks overflow slightly in extreme flood, 

but no large amount of water passes outside the measured section. 

The bed is shifting sand. The banks are fairly solid, but would erode 

if a heavy current should strike them. Frequent discharge measurements are necessary to determine closely the daily discharge.
EIO GEANDB. 51

The observations at this station during 1907-8 have been made 

under the direction of the United States section of the International 

Boundary Commission.

Discharge measurements of Rio Grcmde above Presidio, Tex,, i 

[By F. X. Dougherty.]

Date.

Februarys.........

February 12........

February 21. .......

MarchS. ...........

March 11...........

March 17... ........

March 23...........

March 27.. .........

April 2.............

Aprils.............

April 11............

AprilH.... ........

Aprill7............

April 20. ...........

April23.... ........

April29.... ........

May2.. ............

May5..............

May8..............

May 11.............

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

May 17.. ...........

May20.. ...........

May 23.. ...........

May26.. ...........

May 29.. ...........

June 22. ............

June 25.............

June 28.. ...........

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

Area of 

section.

Sq.ft. 

231

OCfi

266

OQ7

260

244

one

390

335

Onn

256

232

040

261

293

OCQ

290

253

258

249

OOft

Ooo

oco

Oon

91 Q

179 onj.

204

174

oftft

376

336

OQO

O7q

971

268

314

653

7Q7

857

607

572

630

549

1OA

496

512

571

587

686

889

1,078

1,596

1,115

1,057

1,104

1,191

1,193

1,600

1,717

1,621

Gage 

height.

Feet. 

4.3

4 ^

4.5

4.6

4.4

4.3

4.8

5.3

5.0

4.8

4.5

4.3

4.3

4.3

4 7

4.4

4 7

4.3

4.3

4.3

4 9f»

4.3

4.6

4.3

4.2

4.1

4 9

4.2

4.0

4 9

5.45

5.3

5.0

4.7

4.7

4.6

5.0

6.3

6 Q

7.1

6

0

6.0

6.3

6.0

6.1

5.7

5

ft

6.1

6.1

6.4

7.1

7.6

8.0

7.5

7 ^

7.65

7.85

7.8

8.0

8.2

8.0

Discharge.

Sec.-ft. 

559

con

Afift

R1Q

ft^a

592

913

1 384

l'l50

855

682

661

653

718

1.030

7ftfi

966

694

695

666

591

648

S9Q

649

565

452

554

556

359

547

1,586

1 ^AQ

1,076

894

COO

816

1

1 O1

2,815

4,073

4,353

2 74ft

2,499

2,787

2,430

2 644

1 981

2^117

2,656

2 79ft

3,257

4,535

5,667

8,261

5 491

5,993

6,789

6,719

8,222

9,124

8,374

Date.

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

July 7. .............

July 10... ..........

July 13... ..........

July 16..... ........

July 19... ..........

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

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

July 28... ..........

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

August 30. .........

December 2

December 14

Area of 

section.

Sq.ft. 

' 1,200

1,103

1 179

1* ^5W

1 194

1,006

712

705

665

702

585

529.

KOQ

428

358

9R9

9^7

232

orv7

94S

1,074

965

1 445

704

512

471

519

738

543

330

9Q9

251

94R

91 1\

991

400

qio

one

KftQ

453

347

007

309

OQQ

320

293

261

9QA

314

246

238

91 1\

228

204

196

188

203

189

181

Gage 

height.

Feet.

7.4

7.2

7.3

7.7

7.4

7.25

6.3

6.3

6.05

6.15

5.7

5.4

5.3

5.1

5.0

4.7

4.7

4.4

4.8

4.7

7.3

6.9

7.7

fi 9

5.5

5.0

5.35

5.4

6.4

5.8

5.0

4 a

4.3

4.3

4.1

4.25

5.5

4.9

A Q

£. Q

5.4

5.0

4.8

4 7

4.6

4.6

4 1

*C.4

4.7

4.6

4.5

4.5

4.4

4.5

4.2

4.2

4.1

4.2

4.1

4.1

Discharge.

Sec.-ft. 

5,174

4,423

4,731

6,368

4,944

4,860

3,399

3,348

3,086

3,269

2,682

2,393

2,103

1,525

1,348

682

1,018

904

5,361

3,758

6,826 9 un

1,689

1,477

1,621

1,734

3,341

2,312

1,135

QQO

610

586

451

501

I

QCft

1,132

1,070

2,459

1,613

1,170

1,053

965 si a

866

700

£QQ

976

849

722

722

652

71 Q

un

540

445

519

481

457
52 SUBFACE WATEB SUPPLY, 1907-8.

Discharge measurements of Rio Grande above Presidio, Tex., in 1908. 

[By F. X. Dougherty and W. T. Mfflington.]

Date.

February 28........

March 17.. .........

April 13............

April 15... .........

April 18.. ..........

April 21............

April 24............

April 27.. ..........

April 29............

May 3... ...........

May 11.. ............

May 13.. ...........

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

May 22...... .......

May 25...... .......

May 28.... .........

May 31.... .........

Area of 

section.

Sq.ft. 

186

188

187

231

216

226

206

168

177

171

165

166

206

181

199

165

187

159

160

210

183

172

179

200

130

112

110

223

292

585

429

381

471

407

418

351

337

482

670

Gage 

height.

Feet. 

4.05

4.1

4.1

4.2

4.2

4.1

4.1

4.2

4.0

4.0

4.0

4.2

4.15

4.2

4.2

4.0

4.0

3.9

3.9

4.2

4.1

4.1

4.2

4.1

4.1

3.9

3.9

4.3

5.7

5.3

5.0

4.5

4.9

5

1 C

4.85

4.4

5.4

5.95

Discharge.

Sec.-ft. 

415

444

422

A4-7

529

469

466

jm

401

521

480

535

393

397

344

349

489

477

436

393

242

596

2,515

1,538

1,472

1 FL9Pi

1,386

1,098

1,129

1 960

Date.

June 24.............

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

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

July 10.............

July 13.............

July 26.............

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

September 16

Area of 

section.

Sq.ft. 

468

357

292

263

193

165

127

95

54

212

122

37

24

213

365

252

127

319

165

OCQ

254

O47

228

499

400

247

227

137

176

55

CO

37

OQ

A 1!

51

Qfi

61

62

Gage 

height.

Feet. 

5.15

4.55

4.2

4.0

3.9

3.8

3.55

3.2

2.9

3.0

4.0

3.0

2.85

2.8

4.0

4.6

4.6

4.0

3.6

4.6

4.0

4.1

4.4

4.4

4.3

4.4

5.1

4.05

3.95

3.6

3.4

3.1

3.0

2.7

3.2

3.2

3.05

3

C

3.3

3.3

Discharge.

Sec.-ft. 

1,739

1,303

931

593

340

282

160

67

52

30

249

103

8

5

243

642

393

186

99

844

362

615

379

 623

602

730

544

CCfl

1,781

1,162

571

224

175

74

68

43

00

38

23

92

75

80

NOTE. No measurements were made in October and November, 1908, as there was no flow.
EIO. GBANDE. 53 

Daily gage height, in feet, of Rio Grande above Presidio, Tex., for 1907 and 1908.

Day.

1907. 

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

1908. 

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

9O

30................

31............;...

Jan.

4.3

4 45

4 45

4 45

4.45

4 AR

4.5

4.6

4.65

4.6

4.6

4 5

4 45

4.4

4.35

4.35

4.65

4.7

4.8

4 9

5.05

5.35

5.2

5.1

5.0

5.0

4 Q

4.8

4.7

4.7

4.55 

4.1

4.0 

4.0 

4.0

4.05

4.25 

4.15 

4.15

4.2

4.4 

4 45

4.35 

4.2 

d. <?K

4.35 

4.35 

4.3

4.2

4

1 c

4.0 

4.1 

4.1 

4.1

405

4.05 

4.1

4.1

4.15

. 4.15

Feb.

4 45

4.35

4.3

4

0.

4.3

4

O

4.5

4.75

4.65

4.6

4.5

4.45

4.5

4.65

4.6

4.5

4.4

A O

4.3

4.35

4

O

A O

d 9%

4.0

3.95 

4.0 

4.05

4.0

4.05 

4.05 

4.05 

4.0

4.05

4.0 

4.05

4.2 

4.2 

4.15

4.15 

4.15 

4.2 

4.2

4.2

4.15 

4.1 

4.15 

4.05

4.15

4.1

4.05

4 05

.......

Mar,

4.25

4.3

4

O

4 9.

4.35

4 45

4 45

4.6

4

AK

4.4

4.35

A oe

4.2

4.15

4.1

d IK

4.1

4.1

4.1

4.2

4.3

4

O

4.2

4.15

4.1

4.0

3

QC

4.0

4.0

4.2

4.85 

4 05

3.9 

4.0 

4.0

4.25 

4.35 

4.15 

4.1

4.05

4.1 

4.05

4.1 

4.15

4.1 

4.1 

4.1 

4.2

4.2

4.1 

4.05 

3.95 

3.85

3

*7K

3.75 

4.75

4.7

4.6

4.5

Apr.

5.25

5.35

5

0

5.25

5.3

5.15

5.0

5.0

4 Q

4.8

4.7

4.65

4.65

4.7

4.7

4.65

4.6

4.55

4.6

4 95

5.6

6.0

6.55

6

7K

6.95

7.05

7.2

6.95

4.45

4.35 

4.3 

4.25

4.2

4.2 

4.1 

4.1 

4.1

4.1

4.1 

4.15

4.1 

4.05

3.8 

3.95 

3.9 

4.15

4.3

4.65 

4.7 

4.7 

5.6

5 1

5.65

5

AK

5.3

5.35

May.

6.55

6 25

6.1

6.0

6.15

6.3

6.3

6 '

6.15

6.05

6.1

6.1

5.8

5.85

5.7

5.6

K OC

5.9

6.0

6.05

5.9

6.1

6.15

6.4

6.6

6.8

5

0

5.3 

5.0 

4 9

4.7

4.7 

4.5 

4.5

A K

4.4 

4.95

5

0

5.15 

4.9 

4.75

4.6 

4.65 

4.75 

4.8

4.8 

4.8

4.85 

4.7 

4.5 

4.4

4.75

4.95 

5.4

5.8

5.8

5.95

June.

7.0

7 ^*!

7.55

7.65

7

O

7 9

o n

o n

7 7*1

7 P»

7.4

7 45

7 f\

7 KK

7 t\f\

7.65

7 9

7 ftfi

7 9

7 Q

7 95

7 R

7.85

7.95

o n

o n

Q f\K

Q 1 K

Q 1

8

AK

5.7

5.35 

5.15

4 Q

4.75

4.55 

4.35 

4.25 

4.2

4.15

4.05 

4.0

4.0 

3.9 

3 9

3.9

3.85 

3.8

3

0

3.65

3 KG

3.45 

3.35 

3.2 

3.2

<> gg

2.9 

t g

3

f\

<? n

July.

8.05

8

0

7 7P»

7.4

7 Q

7.2

7.25

7.35

7 QC

7.4

7 45

7.4

7.7

7.5

7.45

7.5

7.25

6 95

7 oe

6.55

6.45

(\ ^

6.4

6.4

6.3

6.25

6.15

6.0

5

0

6.0

6.1

Q 7P»

3.5 

4.4 

4.0

3.45

3.1 

3.0 

3.0 

o g

2.85 

2.9

<> g

2.75

3

<f\

3.65

4.35 

4.2 

4.2 

4.0

4

7K

4.35 

4.55

4.7

4.2

3.95

Aug.

5

0

5.55

5

0

5.65

5.45

5

O

5

O

5

0.

5.6

5.45

5.15

5.05

5.05

4

QC

4.8

4.75

4.7

4.6

4.6

4.5

4.4

4.4

4 OK

4.3

5.0

5 OK

4.8

7.75 

3 9

3.65 

3.6

5

O

6.15

4.45 

5.1 

4.5

3 Q

3.65 

3.65

4.35 

4.25 

4.05

3.85 

4.55 

4.35

4.6 

4.45

5.0 

4.95 

4.9 

4.75

4.5

4.2 

4.25

4.8

4.4

4.3

Sept,

6 9

7.2

A Q

6.85

7.05

7 1 f\

7.4

7.7

6 9

6.55

6.25

6

1 K

5 OK

5.55

5.25

5.1

5.0

4

QC

4

0

S

o

5.45

5

oe

5.35

5.2

6.0

6 45

6.7

6.2

5.7

5.45

4 95

4.65 

5.05

4.7

4.55

4.3 

4.05 

4.4

4 3

4.15

3.95 

3.85

3.75 

3.6 

3.45

3.4 

3.3 

3.2 

3.1

3.0 

2.95

2.95 

2.8 

2.75 

2.7

2.55

.......

Oct.

5.1

4.95

4.85

4.8

4.75

4.55

4.35

4.25

4

0.

4.3

4

oe

4.15

d. Vi

4.35

4

oe

4

oe

5.4

5.1

5.05

4.8

4.7

4.65

4.75

4

QC

4.65

5.6

5.9

5.45

.......

.......

.......

------

.......

Npv.-

5.5

5.5

4.95

4 95

4.85

4

7P»

4.8

4.8

4.7

4.7

4.7

A CC

4 45

4 45

4

C

4.55

4.45

4.5

4 45

4.6

4.45

4.4

4.5

4.65

4.7

4

QE

4.75

4.65

4.6

.......

.......

.......

.......

:::::::

.......

Dec.

4.6

4 55

4.5

4 45

4 45

4.35

4.4

4.35

4.35

4.45

4.25

4.25

4.2

4 25

4.3

4.25

4.1

4.1

4.1

4.05

4.2

4.2

4.15

4.1

4.1

4.2

4.2

4.2

4.15

4.1

------

......

3,0 

3.1

3.2 

3.2 

3.1

3.2 

3.2 

3.1 

3.0

3.5

3.6

3.55 

3.5 

3.4 

3.3

3.3

3.3 

3,3

3.3

3.3

3.3

NOTE. No flow July 14-18, July 20, and September. 27-December 10,1908.
54 SURFACE WATER SUPPLY, 1907-8.

Daily discharge, in second-feet, of Rio Grande above Presidio, Tex., for 1907 and 1908.

Day.

1907. 

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

01

1908. 

1.. .............

3...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

.16...............

17...............

18...............

19...............

20...............

21...............

O">

23...............

24...............

25...............

26...............

27...............

28...............

29...............

38...............

31...............

Jan.

oseo

«20

620

«620

630

640

«670

760

820

a820

800

720

«670

645

620

o620

815

850

o915

1,005

1,150

ol,420

1,310

1,230

ol, 150

1,100

980

o855

795

740

0710

455

o385

385

385

o415

525

460

o450

495

510

o645

675

620

0530

605

605

o605

570

500

oSOO

480

410

o470

470

465

445

o450

465

465

«48ft»

480

Feb.

680

670

660

655

o655

675

695

o720

875

1,070

0990

950

865

«825

785

855

a960

920

845

«770

695

695

o730

685

675

o665

635

405

380

405

o430

405

435

0430

430

400

o430

400

430

o520

515

485

o480

490

525

o535

525

515

0475

450

o420

475

450

o425

425

Mar.

620

635

«620

635

«680

740

740

o830

740

710

o680

605

565

o510

450

510

o450

450

450

o555

655

655

o555

505

460

360

o310

360

360

o545

1,200

425

0345

385

390

o370

515

560

0485

475

470

o475

460

465

o465

450

440

o435

435

465

o465

465

420

395

350

305

260

260

1,010

965

820.

780

Apr.

1,460

ol,520

1,410

1,340

ol,370

1,220

1,080

ol,OSO

1,010

950

a890

855

855

0890

890

855

o815

780

815

ol, 130

1,940

2,440

o2,920

3,340

3,760

04,170

4,370

4,670

a4,250

4,050

735

660

610

565

520

505

430

410

o395

380

370

385

o345

320

o240

260

o235

425

555

o595

820

850

o855

2,350

2,510

o2,450

2,170

ol,960

2^030.

May.

3,350

»2,830

2,620

2,500

o2,450

2,640

2,790

o2, 790

2,670

2,610

o2,490

2,590

2,620

o2,480

2,150

2,230

ol,980

1,830

1,790

o2,060

2,200

2,430

2,590

2,540

2,420

o2,720

2,810

3,260

o3,360

3,660

4,060

1,890

1,800

ol,360

1,400

1,380

1,490

ol,470

1,470

1,470

1,430

ol,670

1,820

ol,530

1,470

1,430

ol,390

1,400

ol,450

1,330

1,200

ol,100

1,110

1,100

ol,130

1,420

1,590

I

QfiA

2,340

9 1d{\

2,490

June.

o4,380

5,100

5,550

"5,990

6,970

7,620

<»8,260

8,260

6,910

o5,550

5,210

5,310

o5,420

5,610

5,610

o5,990

6,990

6,790

o6,990

6,990

7,190

06,720

7,150

7,790

08,220

8,220

8,440

o8,900

8,750

8,560

2,250

1,930

ol,740

1,560

1,450

1,090

985

o930

830

695

<»595

530

405

0340

310

o280

280

210

ol60

135

105

o65

65

55

o50

40

40

30

July.

og,640

9,440

7,040

oS, 170

4,800

4,420

o4,580

4,880

4,880

o5,140

5,340

5,140

o6,370

5,420

5,180

o5,420

4,640

4,040

o4,860

3,780

3,630

o3,400

3,530

3,510

«3,350

3,300

3,190

a2,990

2,630

2,990

a3,180

195

140

530

o250

165

120

ol05

85

40

olO

20

20

o5

40

175

0480

380

245

445

rtO7K

425

250

Aug.

2,810

2,490

o2,780

2,830

2,440

o2,340

2,200

2,150

o2,100

2,400

2,140

ol,610

1,440

1,440

ol,270

1,040

960

0880

760

800

0740

740

680

o680

640

600

a980

1,250

1,640

ol,020

6,570

165

110

olOO

1,490

2,510

0725

1,290

765

o300

140

140

575

495

o340

175

740

o585

575

770

o640

1 140

1,070

01,000

640

COE

945

o555

510

Sept.

4,270

lS,fl90

3,360

3,360

04,330

4,710

5,670

a6,830

4,540

3,540

o2,680

2,480

2,120

«1,750

1,580

1,520

ol,480

1,460

1,400

ol,600

1,770

1,510

al,660

1,410

2,700

a3,430

3,850

3,000

o2, 140

1,720

ol,550

1,080

1,700

ol,160

1,030

800

o570

885

800

675

o510

430

345

o225

185

140

105

o75

70

065

50

45

o45

15

Oct.

1,260

al,100

1,030

990

0950

800

730

o650

630

565

o585

585

550

o485

600

600

oSOO

445

500

al,740

1,370

1,310

ol,070

1,010

975

ol,040

1,130

880

2,080

o2,460

1,920

 '

Nov.

1,860

ol,730

1,280

81,140

1,140

1,080

ol,010

1,050

1,050

o965

940

915

0790

745

760

0805

805

710

0730

705

835

0730

690

785

o930

975

1,230

1,010

oGOS

850

"

Dec.

825

«765

720

685

«685

615

650

o650

620

620

o685

570

570

o540

570

600

o570

445

445

o445

410

520

o520

500

480

o480

535

530

520

o485

455

25

30

o35

35

30

»40

40

30

o20

90

105

100

o90

80

75

o75

75

7K

80

o80

80

« Dates of naeasurement. 

NOTR. No flow July 14-18, July 20, and September 27-December 11,1908.
EIO GKANDE. 55

Monthly discharge of Rio Grande above Presidio, Tex., for 1907 and 1908.

Month.

1907.

July......................................................

1908.

April. ....................................................

May......................................................

July......................................................

Disctfarge in second-feet.

Maxim vim.

1,420 

1,070 

1,200 

4,670 

4,060 

8,900 

9,440 

6,570 

6,830 

2,460 

1,860 

825

9,440

675 

535 

1,010 

2,510 

2,490 

2,250 

745 

2,510 

1,700 

0 

0 

105

2,510

Minimum.

560 

635 

310 

780 

1,790 

4,380 

2,630 

600 

1,400 

445 

690 

410

310

385 

380 

260 

200 

1,100 

30 

0 

100 

0 

0 

0 

0

0

Mean.

.834 

770 

585 

1,904 

2,630 

6,848 

4,674 

1,685 

2,905 

985 

972 

571

2,114

497 

454 

486 

838 

1,544 

626 

187 

675 

426 

0 

0 

42

481

Run-off 

(total in 

acre-feet.)

51,293 

42,764 

35,980 

113,306 

161,693 

407,484 

287,365 

103, 577 

172,879 

60,575 

57,818 

35,127

1,529,861

30,545 

26, 112 

29,861 

49,855 

94,949 

37,279 

11,504 

41,494 

25,379 

0 

0 

2,559

349,537

RIO GRANDE BELOW PRESIDIO, TEX.

The station was established April 8, 1900, by the International 

Boundary Commission. It is 6 miles below Presidio, 7 miles below 

the mouth of Rio Conchos, and about 215 miles below El Paso. It 

is at the west end of the canyon section of the Rio Grande. The 

discharge at this station minus the discharge at the station above 

Presidio, Tex., is the discharge of Rio Conchos, except at rare intervals, when some rain water enters the Rio Grande from the north.

The river is fairly straight at the station and for one-fourth mile 

«,bove and below. The right bank is a rocky bluff. The left bank is 

an alluvial deposit and overflows for 750 feet back from the river, 

where gravel hills are found. The bed is shifting sand and is affected 

by a drainage line called Alamos Creek, which reaches the river onefourth mile below the station. This is subject to torrential floods, 

which bring large quantities of bowlders and gravel into the Rio 

Grande, forming a temporary dam, which remains, throwing backwater onto the gage, until a flood in the river scours it out. The 

extreme floods come from Rio Conchos, the highest recorded gage 

height being 26.35 feet on September 11, 1904. Frequent discharge 

measurements are made to determine closely the daily flow.
56 SURFACE WATEE SUPPLY, 1D07-8.

The observations at this station during 1907-8 have been made 

under the direction of the United States section of the International 

Boundary Commission.

Discharge measurements of Rio Grande below Presidio, Tex., in 1907. 

[By F. X. Dougherty.]

Date.

February 22........

March 12. ..........

March 16... ........

March 24...........

March 31.. .........

Aprils.......:.....

April 6.............

Anrtl Q

A nri 119

April 15... .........

April 18............

April 22. ...........

Ar>Hl 94

April27............

May 3..... .........

May 6..............

May 9..............

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

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

May21.............

May 24. ............

May 27.. ...........

May 31.............

June2. ............

July 2.. ............

Area of 

section.

Sq.ft 

813

798

787

839

746

764

799

831

939

910

808

758

752

718

719

706

695

695

637

636

534

582

539

533

480

501

485

441

544

784

711

594

558

513

483

618

831

1,004

1,072

796

731

749

696

687

637

619

642

771

828

949

999

1,189

1,156

1,071

1,155

1,336

1,232

1,208

1,286

1,252

height.

Feet.

7 £

7 1

7 1

7.6

7.4

7.5

7 ^

7 75

8.1

7.8

7.7

7.6

7.6

7.5

7.6

7.6

7.6

7.5

7.4

7.4

7.4

7.4

7 ^

7.4

7.4

7.2

7.3

7 3

7.0

7 5

7 9

7.9

7.7

7.6

7.5

7.4

8.1

8.8

8.7

8.6

8.5

8.5

8.4

8.3

8.2

8.2

8.3

8.6

8.9

9.1

9.2

9.7

9.4

9.3

9.5

10.3

10.0

9.7

10.1

10.05

Discharge.

Sec.-ft.

1,097

1,066

1,359

1,004

1,129

1,587

2,336

1,900

1,218

1,185

1,086

1,197

1,161

1,109

1,082

971

969

900

837

1,007

900

890

586

660

441

1,451

1,130

QQQ

916

822

1,934

3 fiJ.fi

4 fi7Q

4,402

3 con

2,813

3,074

2

EQQ

2,321

1,945

1 QS7

2,352

3,280

4,077

4 936

5,271

7,134

5,662

6,421

8,229

7,281

6,756

7 flan

7,502

Date.

July 6..............

July 11.. ...........

July 14. ............

July 17.............

July 20. ............

July 24. ............

July 26..... ........

July 29. ............

October 18 .........

Area of 

section.

Sq.ft. 

987

935

1,036

1,016

956

774

824

832

951

996

953

781

869

765

605

729

681

1,028

977

1,397

1,869

1,765

2,045

1,842

1,384

2,242

2,075

1,634

1,463.

1,109

1,064

910

799

803

859

779

1,099

847

808

860

886

1,043

2,188

1,265

1,165

1,161

1,099

1,083

1 198

2,467

1,723

1,442

1,309

1,244

1,178

1,170

987

1,009

952

896

Gage 

height.

Feet. 

9.3

9.2

9.4

9.4

9.3

9.1

9.1

9.1

9.25

9.3

9.25

8.75

9.05

8.75

8.3

8.5

8.35

9.45

9.3

10.45

11.5

11.3

11.7

11.2

10.1

11.95

11.75

10.4

10.2

9.2

8.4

8.1

7.9

7.8

8.0

7.8

9.3

8.4

8.3

8.5

8.35

9.35

11.85

9.45

8.6.

8.5

8,2

8.1

8.2

12.2

10.3

9.65

9.5

8.9

8.6

8.4

8.2

8.1

8.0

7.8

Discharge.

Sec.-ft. 

' 5,726

5,210

6,200

6,085

5,762

4,283

4,444

4,382

5,399

5,685

5,284

3,598

4,475

3,623

1,676

2,158

1,920

6,049

5,434

8,597

11,706

10,953

13, 285

10, 485

7,662

14, 157

12,380

9,517

8,400

2,656

2,329

1,694

1,310

1,787

1,366

5,700

2,461

2,191

2,666

2,391

5,760

13,849

6,429

3,818

2,965

2,516

2,187

2,656

14,848

8,840

6,875

5,523

4,640

3,300

2,739

2,202

2,052

1,883

1,527
RIO GKANDE. 57

Discharge measurements of Rio Grande below Presidio, Tex., in 1908. 

[By F. X. Dougherty and W. T. Millington.]

Date.

January 19 .........

January 28.........

February 3 ........

February 12.......

February 20....:..

February 23.......

February 27 .......

March 21...........

Aprils.............

April 6... ..........

April 10. ...:.......

April 14...... ......

April 16............

April 19. ...........

April 22............

April 26. ...........

April 30.. ..........

May8..............

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

May 17.. ...........

May20.. ...........

May23.. ...........

June 20............

June 23 ............

June 29. ...........

Julys..............

July 6... ...........

Area of 

section.

Sq.ft. 

829

861

762

795

782

760

747

745

682

661

663

656

661

658

678

666

695

655

659

647

592

610

572

572

554

580

553

535

587

586

514

583

728

652

631

708

1,030

927

817

699

857

775

722

707

660

744

1,022

820

666

539

511

479

453

301

284

241

191

845

251

Gage 

height.

Feet.

7.7

7.7

7.6

7.7

7.65

7.5

7.4

7.4

7.3

7.3

7.2

7.2

7.2

7.2

7.5

7.4

 7.5

7.3

7.3

7.2

7.05

7.2

7.0

7.0

7.0

6.9

7.0

6 9

6 9

7.2

. 7.0

6.8

6.8

7.5

7.1

7.0

7.4

8.7

8.4

7.7

8.3

8.15

7.7

7.9

7.85

7.65

8.45

8.05

7.55

7.5

7.15

7.1

6.85

6.55

6.3

6.1

8.15

6.35

Discharge.

Sec.-ft. 

1,343

1,433

.1, 185

1,239

1,085

998

903

861

798

765

773

761

1,060

950

1,026

880

870

817

654

OOQ

614

567

593

535

K79

788

608

508

450

646

420

394

KQO

2,548

1,727

1 ISO

1,274

1,635

1,147

1,103

1,038

1,187

1,629

1,132

882

806

352

270

165

43

1 SJ99

221

Date.

July 9...... ........

July 12.............

July 17... ..........

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

July23..... ........

July 24. ............

July 27... ..........

October 9

December 27

Area of 

section.

Sq.ft. 

161

135

123

309

131

275

2,489

1,206

1,785

1,094

1,803

1,713

2,006

1,542

1,341

1,413

1,450

1,350

2,517

3,547

3

7OC

1 662

2,163

, 1,820

1 ^4Q

1,257

1,164

1,017

SOS

739

715

694

645

623

617

581

557

575

595

612

615

628

625

614

612

567

564

558

566

565

621

607

618

615

611

,%.

Feet. 

6.1

8.1

5 QK

7.1

6.15

7.2

13.1

9.6

11.2

9.5

11.3

10.9

11.5

10.1

9.7

9.9

10.1

10.2

12.8

15.15

10.05

11.7

10.6

8

O

8.5

. 8.1

7

0

7.5

7.4

7.3

* 7.1

7.0

6 9

6.9

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.7

6.7

6.7

6.7

6.7

6.7

6.9

6.8

6.75

6.75

6.75

Discharge.

Sec.-ft. 

126

89

78

184

35

207

12,791

2,138

5,989

2,928

5,140

3,910

4,826

3,045

2,436

3,408

3,182

2,597

10,676

18,655

20,553

i Q49

9,192

6,453

3,894

3,435

1,522

1,175

917

730

633

554

. 501

601

419

APiA

458

405

458

395

383

381

389

41$

423

dffi

454

374

387

402

407

430

494

614

628

650

705

625

a Measurement too small; rejected.
58 SURFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Rio Grande below Presidio, Tex.,for 1907 and 1908.

Day.

1907. 

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

1908. 

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

ST.... ...........

Jan.

7.5

7.5

7.5

7.55

7.5

7.5

7.5

7.5

7.6

7.6

7.6

7.55

7.5

7.5

7.4

7.5

7.55

7.7

7.7

7.55

7.6

7.85

7.75

7.7

7.75

 8.05

8.15

8.1

7.85

7.9

7.9

7.7

7.7

7.7

7.7

7.7

7.7

7.7

7.65

7.6

7.6

7.6

7.65

7.7

7.65

7.6

7.65

7.55

7.5

7.5

7.5

7.4

7.4

7.4

7.3

7.3

7.3

7.3

7.3

7.3 

T.Z

Feb.

7.75

7.7

7.7

7.65

7.6

7.6

7.6

7.6

7.55

7.5

7.75

7.75

7.65

7.6

7.6

7.55

7.6

7.6

7.6

7.6

7.5

7.5

7.5

7.5

7.45

7.4

7.4

7.4

7.2

7.2

7.2

7.2

7.2

7.2

7.15

7.15

7.2

7.2

7.2

7.2

7.2

7.4

7.4

7.4

7.5

7.5

7.5

7.4

7.3

7.3

7.3

7.3

7.3

7 1

7.25

7 9

Mar.

7.4

7.4

7.4

7.4

7.4

7.45

7.45

7.6

7.55

7.5

7.45

7.4

7.4

7.4

7.4

7.35

7.25

7.2

7.2

7.25

7.3

7.3

7.3

7.3

7.2

7.1

7.05

7.0

7.0

7.05

7.7

7.1

7.1

7.05

7.1

7.05

7.1

7.15

7.15

7.0

7.0

7.05

7.05

7.0

7.05

7.05

7.0

6.95

6.9

6.95

6.95

7.0

7.05

6.95

6.85

6.8

6.8

7.0

7.35

7.3 7.2'

Apr.

7.9

7.95

7.9

7.95

7.95

7.9

7.8

7.75

7.65

7.6

7.55

7.5

7.4

7.5

7.5

7.5

7.5

7.45

7.4

7.45

7.85

8.15

8.4

8.55

8.7

8.8

8.8

8.9

8.85

8.7

7.25

7.1

7.0

7.0

6.9

6.85

6.8

6.8

6.8

6.8

6.9

7.55

7.4

7.4

7.25

7.1

7.1 

7.05

7.0

7.35

7.4

7.45

7.7

7.7

8.15

8.7

8.8

8.55

8.35

8.35

May.

8.55

8.55

8.55

8.35

8.3

8.4

8.55

8.55

8.45

8.4

8.4

8.4

8.35

8.4

8.35

8.25

8.3

8.3

8.2

8.2

8.25

8.3

8.4

8.35

8.35

8.4

8.55

8.65

8.75

8.8

8.95

8.55

8.4

8.3

8.15

8.0

7.9

7.75

7.7

7.7

7.6

7.7

8.3

8.3

8.15

7.95

7.75

7.65

7.9

7.9

7.9

8.0

7.85

7.7

7.6

7.65

7 7<;

8.3

8.6

8.75 

8.75 i

June.

8.95

9.1

9.05

9.05

9.3

9.4

9.5

9.7

9.75

9.5

9.35

9.2

9.2

9.25

9.3

9.45

9.6

10.05

10.15

10.2

10.1

10.05

10.05

9.9

9.8

9.8

9.9

9.9

9.9

10.1

8.85

8.45

8.3

8.2

8.05

7.85

7.75

7.55

7.5

7.55

7.5

7.3

7.25

7.15

7.1

7.1

7.05

7.0

6.85

6.8

6.75

6.55

6.5

6.45

6.3

fi OR

6.15

6.1

6.4

July.

10.05

10.1

10.25

10.4

9.4

9.35

9.35

9.4

9.25

9.3

9.4

9.45

9.4

9.4

9.6

9.7

9.55

9.3

9.25

9.1

9.05

9.0

9.05

9.05

9.05

9.05

9.0

9.25

9.2

9.45

9.3

6.9

6.55

8.15

7.3

6.8

6.35

6.25

6.1

6.1

6.1

6.1

6.1

6.1

6.05

5.95

5.95

6.15

6.1

6 4

7.25

7.25

11.85

9 4

9.95

n

o

10.45

9 OK

9.5 

9.55

Aug.

9.25

9.2

9.25

9.3

9.2

9.1

9.0

8.8

8.9

9.0

8.95

8.95

8.65

8.65

8.55

8.35

8.3

8.3

8.4

8.25

8.3

8.3

8.2

10.5

9.65

9.4

9.25

9.25

9.3

9.5

10.45

9.65

9.9

11.3

11.35

11.25

10.85

10.9

11.15

11.6

13.9

17.6

16.4

14.05

.11.25

10.15

10.05

9! 8

9.7

9.7

9.7

9.9

9.9

9.95

10.3

10.5

10.2 10 ^

10.3 

13.1

Sept.

10.75

10.95

11.5

11.55

11.65

11.4

11.35

12.4

11.85

11.05

11.05

11.2

10.35

10.2

10.1

10.35

10.6

12.0

11.75

11.3

11.8

10.95

10.56

10.4

10.15

10.05

10.15

9.55

9.25

9.0

15.8

15.15

15.15

15.45

15.35

13.15

10.7

10.05

10.75

11.7

11.55

10.85

10.6

10.3

9.6

9.25

. 0

8.7

8.6

8.45

8.3

8.15

8.1

8.0

7.85

7.75

7.6

7.55

7.5

7.5

Oct.

8.7

8.5

8.35

8.2

8.1

8.15

8.1

8.05

7.95

7.9

7.8

7.8

7.75

7.65

7.6

8.05

7.85

7.75

7.6

8.0

9.25

8.85

8.7

8.5

8.3

8.25

8.3

8.4

8.55

8.95

8.55

7.4

7.4

7.35

7.3

7.3

7.25

7.2

7.1

7.1

7.1

7.0

7.0

7.0

7.0

6.9

6.9

o. y 

6.9

6.9

6.9

6.85

6.8

6.8

6.8

6.8

6.8

A Q

6.8

A Q

6.8 

6.8

Nov.

8.35

8.6

8.45

8.45

9.55

13.4

13.9

11.55

9.9

9.45

9.35

8.95

8.8

8.7

8.6

8.4

8.45

8.35

8.3

8.2

8.2

8.2

8.15

8.1

8.1

8.0

8.1

8.35

8.4

12.45

6 8

6 8

6 8

6 8

6 8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

O. o

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.75

6.7

6.7

6.7

6.7

6.7

Dec.

13.25

12.15

10.6

9.8

9.65

9.6

9.5

9.5

9.5

9.15

9.1

8.85

8.8

8.7

8.6

8.55

8.5

8.4

8.35

8.25

8.15

8.15

8.1

8.1

8.05

8.0

8.0

7.95

7.9

7.8

7.8

6.7

6.7

6.7

6.7

6.7

6.7

6.7

6.7

6.7

6.7

6.7

6.7

6.7

6.75

6.9

6.8

. O

6.8

6.75

6.7

6.8

6.8

6.85

6.9

6.8

fi 8

6.8

6.75

6.75

6.75 

6.7
BIO GRANDE. 59 

Daily discharge, in second-feet, of Rio Grande below Presidio, Tex., for 1907 and 1908,

Day.

1907. 

1..........J

2...........

3..........J

4..........J

5...........

6...........

7...........

8...........

9...........

10...........

11...........

12...........

13...........

14...........

15...........

16...........

17...........

18...........

19...........

20...........

21...........

22...........

23...........

24...........

25...........

26...........

27...........

28...........

29...........

30...........

31...........

1908. 

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...........

ST............

Jan.

1,160 

sl.WO 

1,130 

1,190

ol,100

1,090 

1,080 

ol,070 

1,260 

1,310

ol,360 

1,270 

1,180 

1,160 

ol,000

1,130 

ol,210 

1,450 

1,450 

ol,330

1,410 

1,710 

ol,590 

1,540 

1,640

o2,240 

2,440 

2,360

2,060

2,060

1,360 

1,360 

1,350 

ol,340 

1,370

1,400 

ol,430 

1,310 

ol,180 

1,180

1,170 

ol,240 

1,310 

1,240 

ol, 170

1,240 

1,240 

1,140 

ol,090 

1,090

1,090 

01,000 

990 

0980 

905

905 

905 

a905 

890 

875 

' «860

Feb.

»1,540 

1>35O 

1^330 

«1;270 

1,210

1,200 

ol,190 

1,190 

1,140 

ol,090

1,360 

1,360 

«1,250 

1,190 

1,170

ol, 130 

1,140 

1,130 

ol, 110 

1,120

1,070 

ol,080 

1,070 

1,050 

ol,000

970 

970 

970

800 

800 

0800 

785 

775

o765 

730 

735 

o775 

770

765 

0760 

760 

960 

950

950 

o950 

1,030 

1,030 

ol,030

955 

880 

0880 

880 

875

875 

o870 

845 

0815

Mar.

950 

935 

920 

-«900 

870

o875 

905 

1,060 

ol,050 

1,000

950 

o900 

900 

895 

890

o855 

705 

0585 

585 

625

«660 

660 

660 

«665 

590

515 

480 

o440 

440 

485 

ol,060

705 

705 

0655 

710 

655

710 

0770 

770 

o620 

620

645 

o645 

615 

650 

o650

620 

620 

o595 

565 

580

o580 

595 

620 

565 

o510

495 

510 

o645 

895 

860 

o790

Apr.

1,560 

1,640 

ol,560 

1,600 

1,570

ol,450 

1,290 

1,210 

ol,060 

1,000

940 

0915 

835 

915 

0915

915 

915 

0870 

820 

900

1,540 

o2,040 

2,900 

o3,530 

3,860

4,080 

o4,080 

4,480 

4,550 

o4,400

830 

700 

o610 

610 

560

o535 

495 

480 

465 

o450

480 

660 

620 

o620 

505

o420 

420 

410 

0395 

570

595 

o620 

770 

770 

1,440

02,550 

2,690 

2,140 

1,680 

ol,630

May.

3,780 

3,610 

«3,440 

2,680 

2,370

o2,510 

3,050 

3,140 

o2,920 

2,710

2,650 

o2,600 

2,460 

2,600 

o2,460

2,160 

2,260 

2,230 

ol,950 

1,970

o2,140 

2,310 

2,630 

o2,500 

2,510

2,660 

o3,130 

3,410 

3,680 

3,810 

a4,210

1,810 

1,730 

1,670 

ol,590 

1,490

1,420 

1,310 

ol,270 

1,270 

1,210

1,270 

ol,630 

1,630 

ol,500 

1,320

1,140

ol.lOO 

1,030 

1,140 

ol,090

1,090 

1,200 

ol,040 

1,040 

1,070

ol,190 

1,300 

1,910 

2,240 

2,410 

2,410

June

4,290 

14,940 

4,770 

4,770 

o5,640

6,020 

6,390 

o7, 130 

7,290 

6,520

06,060 

5,530 

5,450 

o5, 510 

5,660

6,230 

o6,650 

7,660 

7,890 

08,000

7,600 

7,440 

o7,440 

7,110 

6,930

«6,990 

7,220 

7,220 

o7,220 

7,690

2,670 

ol,630 

1,440 

1,320 

ol,130

1,050 

1,020 

0935 

895 

920

o880 

820 

820 

o805 

640

490 

o350 

340 

325 

o285

280 

280 

o270 

250 

230

ol65 

135 

75 

045 

225

July.

7,500 

07,650 

8,100 

8,550 

5,980

o5.850 

5,800 

5,880 

o5,360 

5,700

o6,200 

6,310 

6,120 

o6,090 

6,730

7,050 

06, 570 

5,470 

5,030 

o4,280

4,170 

4,060 

4,250 

o4,290 

4,260

04,230 

4,180 

5,390 

o5,250 

6,000 

5,550

680 

360 

ol,820 

1,060 

620

o220 

185 

125 

o!25 

115

100 

o90 

90 

85 

o80

80 

o!85 

o35 

30

75

o230 

230 

o8,980 

ol,980 

1,220

3,820 

o5,990 

4,640 

3,560 

o2,930 

3,200

Aug.

o5,530 

5,300 

5,370

o5,430

5,120

4,780 

4,440 

o3,760 

4,040 

04,330

4,190 

4,190 

03,360 

3,170 

2,720

2,010 

ol,680 

1,680 

o2,000 

1,760

1,840 

ol,840 

1,680 

8,750 

o6,570

'5,840 

5,340 

o5,280 

5,430 

5,980 

o8,600

3,200 

3,500 

5,140 

05,240 

4,990

3,760 

o3,910 

4,800 

6,400 

15,100

34,000 

25,600 

15,640 

04,760 

3,110

o2,970 

2,810 

2,590 

o2,440 

2,640

2,840 

03,400 

3,210 

3,110 

03,540

3,560 

3,390 

o2,600 

2,980 

3,180 

oll,880

Sept.

9,480 

10,080 

oll,?10 

11,890 

12,270

oll,330 

11,400 

15,840 

013,880 

10, 420

10,150 

olO,480 

8,300 

7,920 

07,660

8,540 

9,420 

014,360 

13,030 

10,900

ol2,580 

10,680 

9,840 

o9,520 

8,600

8,120 

a 8, 250 

6,520 

5,650 

04,930

21,900 

ol8,650 

18,950 

20,750 

020,550

14,050 

6,850 

a4,940 

6,740 

09,190

8,820 

7,080 

o6,450 

6,030 

5,030

4,530 

33,890 

3,740 

3,590 

o3,330

2,660 

1,990 

ol,520 

1,410 

1,230

ol,130 

1,000 

960 

915 

0915

Oct.

3,790 

3,030 

o2,600 

2,440 

2,330

o2,380 

2,330 

2,170 

ol,850 

1,690

1,310 

ol,310 

1,190 

950 

830

ol,900 

1,470 

ol,270 

970 

2,080

05,560 

4,080 

3,540 

o2,820 

2,190

2,060 

o2,190 

2,430 

2,790 

3,740 

o2,790

790 

760 

o680 

635 

635

o590 

- 605 

575 

»630 

630

555 

o555 

555 

555 

0500

525 

550 

575 

o600 

560

490 

o420 

430 

445 

o455

455 

455 

0460 

440 

420 

o405

Nov.

2,390 

2,850 

«2,570 

2,730 

06,410

18,880 

20,500 

012,920 

7,820 

6,430

o 6, 120 

4,890 

4,430 

o4,130 

3,630

2,850 

o2,820 

2,740 

2,660 

o2,520

2,520 

2,520 

o2,350 

2,230

2,270

2,010 

o2,360 

3,110 

3,270 

015,650

430 

o460 

440 

420

o395

395 

390 

o385 

385 

380

o380 

380 

385 

385 

0390

395 

405 

o420 

420 

420

0425 

450 

475 

o495 

475

455 

o455 

425 

400 

o375

Dec.

18,210 

14,710

09,780 

7,330 

6,880

o6,720 

6,120 

5,820 

o5,520 

5,010

4,930 

04,640 

4,190 

3,750 

03,300

3,160 

3,020 

o2,740 

2,610 

2,340

o2,130 

2,130 

2,050 

o2,050 

1,970

1,880 

ol,880 

1,790 

1,700 

1,530 

01,530

380 

380 

o385 

390 

395

o400 

405 

405 

0405 

415

425 

o430 

430 

445 

o495

515 

565 

o615 

610 

605

« 630 

640 

650 

o660 

665

690 

0720 

685 

665 

645 

o610

a Dates of measurement.
60 SURFACE WATER SUPPLY, 1907-8.

Monthly discharge of Rio Grande beloiv Presidio, Tex.,for 1907 and 1908.

,\U !

;-Stl; 1907 -

PphSj4af"ir

Marc&.L. . ...............................................

April. ...................................................

May.....................................................

July.....................................................

1908.

March ...................................................

Mav .

July........ .............................................

Discharge in second-feet.

Maximum.

2,440 

1,540 

1,060 

4,550 

4,210 

8,000 

8,550 

8,750 

15,840 

5,560 

20, 500 

18,210

20,500

M30 

1,030 

895 

2,690 

2,410 

2,670 

8,980 

34,000 

21,900 

790 

495 

720

34,000

Minimum.

1,000 

970 

440 

820 

1,950 

4,290 

4,060 

1,680 

4,930 

830 

2,010 

1,530

440

860 

730 

495 

395 

1,030 

45 

30 

2,440 

915 

405 

375 

380

30

Mean.

1,455 

1,166 

775 

1,945 

2,792 

6,509 

5,737 

4,258 

10, 125 

2,325 

5,286 

4,562

3,911

1,146 

855 

651 

857 

1,436 

691 

1,385 

6,332 

- 6, 960 

546 

416 

528

1,817

RlMrOfE

(toitttn 

acrefffiet).

:Jt

115' 716 

171,650 

387,292 

352,760 

261,838 

602,479 

142.-969 

314, 539 

280,502

2,831,602

70,443 

49,180 

40,007 

51,015 

88,304 

41,098 

85,170 

389,335 

414,129 

33,590 

24,774 

32,440

1,319,485

RIO GRANDE NEAR LANGTRY, TEX.

This station was established in April, 1900, by the International 

Boundary Commission. It is located one-half mile south of Langtry 

station, on the Southern Pacific Railroad, and is about 440 miles 

below El Paso, Tex., at the east end of the canyon section of the 

Rio Grande, and a short distance to the west of the mouth of Pecos 

River, one of the principal tributaries of the Rio Grande.

The right (Mexican) bank is a rock bluff; the left bank is alluvial 

deposit for 200 feet back to a rock bluff. As the river is constantly 

shifting, because of alluvial deposits, frequent discharge measurements 

are made in order to determine closely the daily flow.

Observations at this station during 1907-8 have been made under 

the direction of the United States section of the International 

Boundary Commission.
RIO GRANDE. 61

Discharge measurements of Rio Grande near Langtry, Tex., in 1907. 

[By E. E. Winter, D. J. Smith, I. P. WMtis, and W. H. Dodd.]

'^ Date.

Jiifuwy 7

January 19.........

Februarys.........

March 11...........

March 15...........

March 23...........

March 28...........

April 6.............

April 15. ...........

April 18.. ..........

April 28.... ........

May7..............

May 11.... .........

May 24.. ...........

June 22............

June 27. ...........

Area of 

section.

Sq.ft. 

771

781

794

786

795

816

726

697

665

678

695

7fiQ

608

647

col

631

646

599

596

604

700

671

671

1 086 i ' 1 07

1,045

1,051

1,018

980

1,018

1 997

1,357

1,210

1,920

1 337

Gage 

height.

Feet.

1.55

1.55

1.55

1.45

1.5

1.6

1.9

1.6

1.6

1.6

1 ^

1.4

1 3

1.3

1.3

1.4

1.2

1.1

0 9

1.7

1.7

1.5

1.3

1 >

2

0

3 n

2.6

2.65

2 6

2.4

2.3

2 OK

3.7

4.3

3 7

4.8

4.2

Discharge.

Sec.-fl.

1.834

1 SOI

1.931

1,880

1 O^J.

1,839

1 600

1^573

1 ^89

1,489

1 ^77

1,390

1,438

1 317

1,390

1,476

1 17S

1,096

1,024

1 ^7

1,595

1 429

1^293

1 241

2 7ftn

3

QQ«

2 944

<y 929

2 949

2

* CQQ

2 C.77

2 7Q1

5

7fio

6,606

7,264

5,809

Date.

July 2. .............

July 14.............

July 30.. ...........

November 22

Area of 

section.

Sq.ft. 

1,400

1,264

1,216

1,171

1,211

1,098

1,048

1,045

768

776

1,238

1 7flS

1,819

1 *\^Q

2 386

l'887

1 ^7O

997

730

654

637

964

757 1 nn3

1 QCO

1,120

925 Q-ID

79 K

752

I

onc

1 164

1*012

QCQ

790

724

 £ 

Gage^ 

height*.,

Feet^- 

4.4>" 3.F'-"

3 7

3.7

3.4

3.6

3.6

3.2

3.0

3.0

1 Q

1 Q

3.6

5 9

5.8

5.25

7.5

5.75

4.8

3.6

3.2

2 1

i $2

1.7

2 9

2.0

3 n

2.4

6.1

3

0

3.05

2 7

2

0

2

K

4.3

3.8

3.2

2.7

2.5

2.3

r Discharge.

Sec.-ft. 

6, 690

5,6/0

5,554

5,845

5.571

5,750

5,454

4,612

4,287

4,255

2,108

2; 153

6,359

9.053

10, 475

8,323

15,307

12,176

9 991

5,665

4,243

S

ylOC

1 Q71

1 ft79

3,823

2.597

4,091

2,825

19 93*i

5,681

4 083

3^359

2,799

2,923

6,556

5,585

4,162

3,287

2,849

2,461

. _ _

a Measurement too large. Rejected.
62 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Grande near Langtry, Tex., in 1908. 

[By W. H. Dodd and E. E. Winter.]

Date.

March 1............

\Farph P»

March 14.. .........

March 20...........

March 24...........

Aprils.............

April 12.. ..........

April 16.. ..........

April 20.. ..........

April 24.. ..........

April 27... .........

May 2... ...........

May7... ...........

May 11... ..........

May 16.............

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

May 23.............

May 28.... .........

June 23...... .......

Area of 

section.

Sq.ft. 

680

622

609

624

590

587

526

523

526

vn

CE»7

501

473

JCI

468

AAf\

443

428 >;ii

472

469

620

491

413

A.C.&.

710

598

553

cco

580

558

528

681

611

593

512

«11O

380

AQA

Gage 

height.

Feet. 

2.1

1 Q

1.8

1 R

1.7

1.65 1 >;

1.4

1.4

1.4

1.25

1 f»

1.3

1.25

1.1

1.0

1.1

1.0

.95

.9

1.25

1.1

1.0

1.7

1.2

.8

2.0

1.8

1.7

1.7

1.5

1.4

1 t

2.0

1 9

1.2

1.0

.8

.5

9

Discharge.

Sec.-ft. 

2,233

1,936

1,838

1,810

1,684

1,623

1,416

1,327

1,302

1 339

1,214

1,277

1,207

1,059

953

996

915

938

897

1,276

1,128

1,033

1,675

1,014

796

928

2,329

1,668

1,530

1,623

1,626

1,503

1,361

2,213

1,728

1,451

1,181

756

676

1,120

Date.

July 2..............

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

July 12.............

July 16.............

July 20.. ...........

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

July 29.. ...........

September 23.......

October 2..........

October 20.........

December 12.......

Area of 

section.

S&ft. 

363

1,788

417

348

392

1,306

1,468

1,200

2,172

2,458

2,888

1,229

1,225

1,302

2,783

2,709

1,517

1,557

1,093

834

743

674

686

511

498

464

444

431

417

420

412

404

404

405

393

392

397

392

387

378

Gage 

height.

Feet. 

.5

5.25

.8

.5

.4

4.0

4.4

3.0

6.95

8.5

9.25

3.95

3.95

4.25

9.0

8.85

5.0

5.0

3.4

2.55

2.0

1.6

1.65

1.0

.9

.8

.7

.6

.5

.5

.45

.45

.45

.45

.4

.4

.4

.35

.4

Biacharge.

Sec.-ft. 

621

10,010

911

603

682

6,070

8,683

4,800

15,986

19,318

23,100

6,253

6,424

7,617

21,867

19,492

9,280

9,449

4,796

2,879

2,224

1,563

1,589

1,143

1,071

990

826

806

760

766

753

748

748

711

717

675

669

702

667

668

716
RIO GRANDE. 63 

Daily gage height, in feet, of Rio Grande near Langtry, Tex.,for 1907 and 1908.

Day.

1907. 

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

10

20...............

21...............

22...............

9^?

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

1908. 

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

11

Jan;

1.7

1.6

1.6

1.6

1.55

1.55

1.55

1.55

1.55

1.55

1.55

1.6

1.6

1.6

1.55

1.55

1.55

1.5

1 45

1.45

1.4

1.4

1.4

1.5

1.65

1.7

1.6

1.6

1.65

2.2

2.15

2.1

9 n

2.0

2.0

1 9

1.9

1 9

1.9

1.85

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.7

1.7

1.7

1.7

1.7

1.7

1.65

1.6

1.6

1.6

1.55

1.5

1.5

1.5

1.4

Feb.

2.0

1.9

1.9

1.9

1.8

1.8

1.6

1.55

.1.55

1.6

1.6

1.6

1.6

1.6

1.55

1.55

1.55

1.55

1.55

1.55

1.55

1.55

1.55

1.55

1.55

1.55

1.5

i if.

1.4

1.4

1.4

1.4

1.4

1.4

1.35

1.35

1.4

1.4

i K5

1.5

1.4

1.25

1.25

1.25

1.25

1 i

1.5

1.5

1.4

1.4

1.5

1.5

1.5

1.4 1 <i

1 1

1.3

Mar.

1.4

1.4

1.4

1.4

1.35

1.3

1.3

1 i

1.3

1.3

i <>

1.3

1.3

1.3

i i

1.3

1 i

1.35

1

0K

1 *%

1.15

1.2

1.15

1.15

1.1

1 9

1.45

1.15

1.1

1.1

1.1

1.25

1 95

1.2

1.2

1.1

1.1

1.1

1.1

1.1

1.05

1.0

1.15

1.2

1.1

1.1

1.05

1.1

1.05

1.0

1.0

1.05

1.0

1.0

.95

.95

.95

.9

.9

.9

.9

Apr.

1.05

.9

.9

1.1

1.55

1.7

1.8

1.8

1.75

1.7

1.7

1.7

1.7

1.6

1.5

1.45

1 t

1.3

1 q

1 ^

1.35

1.3

1 <%

1.4

1.8

2.25

2.55

2.85

3.1

3.2

g

QK

1.25

1.25

1.2

1.2

1.05

1.05

1.05

95

Q<»

1.0

.95

1.25

1.1

1.45

1.6

2.1

1.8

1.45

1.1

Q<»

.95

.85

.8

.8

.85

g

1.1

2.0

May.

3.2

2.95

2.8

2.8

2.75

2.7

2.6

9 %

2.45

2.45

2.7

2.75

2.6

2.55

2.6

2.55

2.3

2.2

9 9

2.4

9 35

2.3

2.4

2.5

2.4

9 *%t\

2.4

2.5

2.55

2.0

9 rt

2.05

2.05

1 05

1.9

1.8

1.65

1.6

1.55

1.65

1 4K

1.3

1.2

1.1

1 T\

1.9

1.8

1.5

1.4

1.4

1 4

1.4

1.4

1.4

1.4

i i

1.3

1.3

1 t

i 11

June.

2.85

3.1

3.0 3 I*

3. 

3.o

3.6

3.75.

3.95

4.35

4.3

3.95

3 7

3.7

3.7

3.7

3.85

5.0

4.7

4 6

5.5

4.65

4.25

4.0

4 05

4.25

i 95

4.2

4.2

1.75

1 OS

2.2

2.15

2.05

1.9

1.8

1.75

1.6

1.4

1.2

1.05

1.0

1.0

1.0

.95

.9

.8

.8

.75

.7

.6

.5

2.65

2.05

1.65

95

1.0

.75

.55

July.

4.4

4.45

4.45

4.2

3.95

3.9

3.75

1 7

3.6

3.6

3.6

3.8

3.7

3.7

1 7

3.7

1 7

3.6

3.6

3.5

3.45

3.35

1 9

1 i

3.4

3.5

3.2

i if;

3.4

3.6

3.65

.5

.5

.5

.5

.45

.35

4 95

1.8

1.45

1.35

1.25

.85

.75

.65

.55

.5

.4

.4

.4

.4

3.1

1.75

.9

i i

4.55

3.5

2.45

2.65

4.45

4.0

3.85

Aug.

3.7

3.65

3.45

3.3

3.4

3.5

3.4

3.25

2.95

2.9

2.85

2.85

2.8

2.8

2.8

3.0

2.6

2.45

2.3

2.2

1.95

1.95

1.9

1.9

1.9

3.9

3.5

3.4

3.3

3.3

3.3

3.75

3.25

2.95

2.6

2.5

5.15

6.55

4.9

4.3

4.15

4.15

7.8

11.25

12.3

8.9

6.1

5.3

4.9

4.45

4.0

3.95

3.95

3.95

3.95

4.4

4.85

4.35

4.35

4.55

4.65

4.9

Sept.

3.35

3.85

4.8

4.9

5.4

6.15

5.85

5.8

6.1

7.05

7.6

6.7

5.25

4.75

4.6

4.5

4.8

4.65

5.0

7.75

6.55

6.6

5.5

4.9

4.95

4.75

4.7

4.75

4.6

4.25

5.0

7.7

9.0

8.85

8.1

9.05

8.5

7.45

5.7

5.15

5.15

6.45

6.15

5.85

4.95

4.35

3.95

3.6

3.3

3.05

2.85

2.65

2.55

2.4

2.25

2.05

2.05

1.9

1.8

1.7

Oct.

3.9

3.55

3.3

3.05

3.2

2.85

3.0

2.85

2.45

2.15

2.05

2.0

1.9

1.85

1.9

1.85

1.7

2.05

2.1

1.95

1.75

1.85

1.7

3.0

2.85

2.7

2.5

2.35

2.1

2.05

2.05

1.65

1.6

1.55

1.45

1.35

1.3

1.5

1.6

1.25

1.15

1 05

1.0

1.0

.95

.95

.9

.9

.9

.85

.8

.8

.75

.7

.7

.7

.7

.65

.6

.6

.6

.5

Nov.

2.55

3.0

2.8

2.85

2.75

2.5

2.4

7.3

9.95

6.25

5.35

4.5

4.05

3.85

3.55

3.35

3.15

3.05

3.0

2.9

2.85

2.75

2.6

2.55

2.5

2.45

2.4

2.3

2.55

2.65

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.45

.45

.45

.45

.45

.45

.45

,45

.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

Dec.

2.55

4.55

8.15

5.75

5.1

4.7

4.5

4.35

4.3

4.3

4.15

3.95

3.85

3.65

3.45

3.3

3.2

3.1

2.95

2.9

2.7

2.7

2.5

2.5

2.5

2.4

2.4

2.3

2,3

2,2

2.1

.45

.45

.45

.45

.45

.4

.4

.4

.4

.4

.4

.4

.35

.35

.35

.35

.35

.35

.35

.35

.35

.35

.35

.35

.35

.35

.35

.4

.4

.35

.35
64 SURFACE WATER SUPPLY, 1907-8. 

Daily discharge, in second-feet, of Rio Grande near Langtry, Tex.,for 1907 and 1908.

Day.

1907. 

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...........

 2Q

30........... 

si

1908. 

1...........

2...........

3...........

4...........

6...........

7,.... ......

8............

9»

10^.... .......

Hi...........

12............

13.... .......

14...........

1 f*

16............

17............

la

19...........

20;..........

21:..........

22

23............

24...........

25.-. .........

26............

27...........

28... .........

29............

30............

31............

Jan.

2,010

1,880

ol,86C

1,870

1,840

1,830

ol,S30

1,850

1,860

1,880

ol,890

1,940

1,950

1,960

al,930

1,930

1,930 

1,900

ol,880

1,890

1,850

1,860

1,870

ol,950

2,050

2,080

2,010

a2, 010

2,080

2,850 

2,780

2,170

2,100 *> noo

1 960

1,950

ol,940

1,940

i eon

1,830

ol, 840

1,830

1,820

1,820

rti Gin

1,810

1,680

1,680

ol,680

1,680

1,680

1,680

ol,620

1,560

1,550

1,550

1,480

ol,420

1,420

1,420

1,320

Feb.

2,370

2,040

ol, 840

1,840

1,760

1,760

al,600

1,550

1,550

1,580

al,570

1,580

1,580

al,5SO

1,550

1,550

al,550 

1,530

1,520

1,500

ol, 490

1,510

1,530

1,550

a 1,570

1,570

1,540

1,510

fj-\ oqn

1,320

1,310

al,300

1,310

1,280

1,280

i 33ft

al,340

1,460

1,420

1,340

ol,210

1,210

1,210

1,210

1,260

1,450

al,450

1,370

1,370

1,450

1,450

1,450

1,370

al,280

1,280

1 280

Mar.

1,430

ol, 390

1,420

1,440

1,430

1,420

ol,440

1,410

1,380

1,350

ol,320

1,330

1,350

1,370

ol, 390

1,390

1,390 

1,430

ol, 430

1,360

1,210

1,210

al, 140

1,140

1,100

1,180

1,380

al, 140

1,100

1,100 

1,100

1,160

1,160

ol,060

1,050

1,050

1,040

1,040

<»990

940

1,050

1,090

ol,000

1,000

960

1,000

960

920

o910

970

945

965

»940

940

940

895

895

o895

895

895

Apr.

1,080

ol,020

1,020

1,150

1,440

ol,540

1,620

1,630

1,610

1,580

ol,590

1,600

1,600

1,510

ol,430

1,390

1,290 

ol, 290

1,280

1,270

1,290

1,250

a 1,240

1,340

1,750

2,200

a'2, 810

3,180

3,330

o'in

1 280

1 230

1,230

1,080

al 080 1,'oso

985

985

985

l,2fiO

1,120

1,450

1,540

2,200

1,810

al,340

960

875

875

a820

780

760

930

1,140

2,100

May.

q jon

»3, 340

3,170

°,170

c 110

3,060

a2,940

2,800

2,720

2,700

"3,000

3,070

2,950

2,910

2,950

"2,900

2,650 

2,550

2,550

3,080

2,740

2,660

a2,5SO

2,740

2,900

2,780

«2, 730

2,810

2,970

a2, 330

*> 35ft

*> 330

2 nsft

1,920

ol, 670

1,460

1,390

1,320

al,460

1,220

1,040

930

820

ol,700

1,940

1,860

ol,630

1,530

1,520

1,510

ol,500

1,490

1,480

1,470

1,360

«1,360

1,360

1,360

1,410

June.

4,320

4,090

4,430

5,010

5,240

5,470

«5, 750

5,950

6,350

o6,300

5,930

5,660

«5,660

5,660

5,790 

06, 760

6,530

6,450

6,410

al, 150

6,260

5,8fiO

5,610

5,660

5,860

5,810

1 900

nf) 1 Kl)

2,540

9 370

2,100

al,730

1,690

1,670

1,610

1,530

al,450

1,250

1,180

1,180

1,180

1,080

970

800

a755

745

730

700

a675

3,060

2,400

1,950

ol, 170

1,230

955

735

July.

6,450

a6,760

6,760

6,400

6,030

5,960

5,740

a5, 670

5,560

5,540

5,520

5,680

5,570

a5,550

5,630

5,700

5,770 

a5,750

5,750

5,660

5,620

5,530

5,390

5, 570

5,660

5,390

6,250

5,570

a5, 750 

5,790

650

620

620

570

470

"9,290

2,000

1,620

1,510

1,400

860

755

655

o605

565

600

640

a 680

4,130

1,970

1,120

4,870

a7,460

5,070

4,020

4,320

a8, 800

7,680

7,310

Aug.

5,790

a5,550

5,140

4,820

5,030

5,240

5,030

a 4, 720

4,200

4,120

o4,040

3,970

3,970

3,970

a 4, 260

3,470 

3,180

2,890

2,700

a2,210

2,220

2,140

a 2, 150

2,150

6,080

5,030

4,820

4,820

7,010

5,530

4,000

S

CAfi

11,060

«14, 870

10,250

8,570

8,150

8,150

«17, 520

27,570

30,700

"21 990

13,080

10, 540

9,270

7,840

a6, 410

6,290

6,320

6,350

6,390

a 7, 770

9,120

o7,860

7,860

8,460

8,740

9,440

Sept.

4,930

6,050

8,160

8,390

o9,530

11,300

10, 590

alO, 480

11, 330

14,020

15,610

12,830

a8,320

7,320

o 7, 020

6,820

7,670 

7,240

8,240

a!6,060

13, 610

13,700

all,400

9,540

9,690

9,060

9,120

8,820

8,120

9 740

17 990

90 940

i c Ofln

20,570

alS,560

15,780

11,140

9,680

a9,730

12,770

11,900

7,560

6,390

5,380

a 4, 570

4,010

3,560

3,110

2,700

2,520

2,280

a2,220

2,100

1,980

1,860

Oct.

6,800

a5,660

4,940

4,320

4,490

3,670

"3,840

3,670

3,010

2,510

a2, 350

2,270

2,120

2,050

2,120

a2,050

1,820 

2,350

2,420

2,210

al,940

2,120

1,870

3,990

«3,760

3,550

3,280

3,070

a2, 730

2,660 

2,660

1,710

1,540

1,490

1,430

1,410

ol,490

1,550

1,310

1,240

1,170

1,140

1,110

1,110

al,070

1,070

1,070

1,070

ol,030

970

950

885

a 825

825

825

815

a805

785

765

o675

Nov.

3,410

o4,090

3,670

3,770

3,560

3,040

a2,830

15, 280

22,010

a!2, 620

10,100

7,680

6,390

o5,820

5,150

4,720

4,300 

a4,080

3,980

3,770

3,670

a3,460

3,220

3,150

3,080

3,010

2,940

a 2, 800

3,150

3,290

710

a 760

760

765

a 765

765

760

760

o755

750

750

750

» 750

7cn

750

745

745

a 745

740

730

720

o710

710

710

715

o715

715

720

720

Dec.

3,040

a8,150

17,360

10,610

8,790

7,670

7,110

6,690

06, 560

6,560

6,260

5,880

o5,680

5,230

4,760

4,400

a 4, 160 

3,990

3,720

3,640

a 3, 290

3,290

2,850

2,850

o2,850

2,660

2,660

2,460

a 2, 460

2,280 

2,100

695

675

675

675

670

a670

670

670

670

670

a670

660

660

660

665

a665

665

670

670

670

»670

670

670

670

670

670

o715

715

670

670

a Dates of measurement.
BIO GRANDE. 65 

Monthly discharge of Rio Grande near Langtry, Tex.,for 1907 and 1908.

Month.

1907.

May.....................................................

July.....................................................

The year ...........................................

1908.

July.....................................................

Discharge In second-feet.

Maximum.

2,850 

2,370 

1,440 

3,330 

3,480 

7,150 

6,760 

6,080 

16,060 

6,800 

22,010 

17,360

22,010

2,170 

1,460 

1,210 

2,200 

2,380 

3,060 

9,290 

30,700 

21,870 

1,710 

765 

715

30,700

Minimum.

1,830 

1,490 

1,100 

1,020 

2,550 

3,740 

5,390 

2,140 

4,930 

1,820 

2,800 

2,100

1,020

1,320 

1,210

895 

760 

820 

675 

470 

3,800 

1,860 

675 

710 

660

470

Mean.

1,977 

1,631 

1,312 

1,628 

2,908 

5,701 

5,792 

4,123 

9,796 

3,106 

5,401 

5,162

4,045

1,753 

1,332 

999 

1,161 

1,582 

1,449 

2,659 

10, 181 

9,162 

1,124 

740 

673

2,735

Run-off 

(total in 

acre-feet).

121,587 

90,585 

80,668 

96,853 

178, 790 

339,253 

356, 112 

253, 507 

582, 902 

191,008 

321, 401 

317, 375

2,930,041

107,762 

' 76,641 

61,438 

69,104 

97, 269 

86,251 

163,517 

626,003 

545,157 

69,094 

44,033 

41,375

1,987,644

KIO GEANDE BELOW MOUTH OF DEVILS EIVEE, TEX.

The station was established in April, 1900, by the International 

Boundary Commission. It is alongside the Southern Pacific Railroad 

track, about a mile below the mouth of Devils River and about 480 

miles below El Paso.

The bed of the river is rock for a short distance from the left bank; 

the right bank is alluvial deposit, overflowing in extreme high water 

for a distance of some 500 feet back from the river. The left bank 

is a loose rock fill, along which runs the Southern Pacific Railroad.

Frequent discharge measurements are made to determine closely 

the daily flow. The observations at this station during 1907-8 have 

been made under the direction of the United States section of the 

International Boundary Commission. 

24440 IRR 248 10 5
66 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Grande below mouth of Devils River, Tex., in 1907. 

[By E. E. Winter, D. J. Smith, I. P. Whitis, and W. H. Dodd.]

Date.

February 28. .......

March 18.........

March 21...........

March 27...........

March 31...........

April 10............

April 14............

April 17............

April 21. ...........

April 26............

April 30............

May 4.. ............

May 10. ............

May 15.............

May 18. ............

May 23.............

May 27.............

MaySl........... .

June 21 ............

June 25............

Area of 

section.

Sq.ft. 

1 419

1,368

1,371

1,414

1,411

1 401

1,416

1,301

1,286

1,323

1,284

1,262

1,226

1,204

1,206

1,142

1,135

1,178

1,323

1,212

1 91 Q

1,217

1,180

1,584

1 489

1,435

1,418

1,374

1,375

1,425

1,773

1 CCC

1,785

1 QftC

1,768

Gage 

height.

Feet. 

4 0

3.9

3 9

4 0

4.0

4 0

4.05

3 9

3.8

3.7

0 Q

3.7

3.6

3.7

3.7

3.5

3.4

3.4

3.1

3.7

3.5

3.4

3.2

4 5

4.2

4.2

4.2

4.1

4.35

5 4

5.8

K A

6-1

6.0

Discharge.

Sec.-ft. 

3,416

3,043

3,354

3,359

3,363

3,460

2,742

2,718

2,778

2,620

2,506

2,441

2,481

2,179

2,072

2,502

2,284

2,332

2,428

3,506

3,340

3,142

3

01 0

3,614

S

QftO

7,278

9 ft99

7 430

Date.

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

July 10.. ...........

July 15..... ........

July 19.. ...........

July 24.. ...........

July 28.. ...........

December JQ

Area of 

section.

Sq.ft. 

1,694

1,936

1,733

1,863

1,714

1,635

1,866

1,593

1,556

1,290

1,251

1,212

1,208

1,539

2,393

3,000

2,777

1,875

1,271

1,154

1,044

1,226

1,390

1,843

1,438

1,431

1,706

1,587

1,451

1,338

Gage 

height.

Feet. 

5.9

5.9

5.4

5.7

5.4

5.1

5.8

5.2

5.0

4.4

4.3

4 4

4.4

5.0

6.8

7.6

7.6

6.0

5.4

4.7

4.5

4.5

5

n

4.9

K K

6.1

5.1

4 Q

5.0

7.4

6.0

5.5

5.2

4 9

4.7

Discharge.

Sec.-ft. 

7,356

8,800

7,844

7,709

8,337

6,335

4,256

3

040

4,473

18, 679

17, 482

6,715

3,326

3

OA1

3,334

4 969

4,475

7,053

01 QC9

9 160

5,241

4,656

5,047

15,963

6,818

5 dA7

4,679

4

070

4,002

Too small, rejected.
BIO GKANDE. 67

Discharge measurements of Rio Grande below mouth of Devils River, Tex., in 1&Q8. 

[By W. H. Dodd and E. E. Winter.]

Date.

March 17.... .......

March 21.... .......

March 25.. .........

April 7..-. .........

April 10............

April 23. ...........

April 26... .........

April 30. ...........

May 6..... .........

May 9....... .......

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

May 18.. ...........

May 22.. ...........

May 27.. ...........

May 31...... .......

Area of 

section.

Sq.ft. 

1,262

1,230

1,290

1 266

1,266

1,275

1,245

1,224

1,229

1,220

1 268

1 99£

1,210

1,185

1,181

1 111

1,135

1,128

1,107

1,147

1,167

1,170

1,069

1,011

1,082

1,243

1,112

1,195

1,227

1,231

1,197

1 425

1,354

1,096

965

982

1,200

1,077

&L

Feet. 

4.6

4.6

4.5

4.4

4 4

4.35

4.3

4.2

4.2

4 9

4.05

4.1

4.0

4.0

3.9

3.9

3.85

3.8

3.75

3.75

3.86

3.95

3

QK

7.1

4.0

3.8

4.2

4.3

4.2

4.0

4.3

3.9

4.1

3.9

4 Z

4.1

3.9

3.7

3.6

4.4

3.7

Discharge.

Sec.-ft. 

3,751

3,539

3,432

3,366

3,244

3,002

2,689

2,678

2,861

2,553

2,755

2,485

2,214

2,266

1,998 i ana

2,167

2,374

2,263

15,018

2,362

2,131

2,518

3,129

2,274

3,138

2,967

3,212

2,736

3,903

3,318

2,306

1,872

1,709

3,096

2,186

Date.

July 6..............

July 10.............

July 15...... .......

July 19.............

July 24.... .........

July 27...- .........

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

September 22.......

October 11

October 19.........

October 31. ........

Area of

seetioa.

Sq.ft. 

986

1,655

1,040

996

1,142

1,459

1,735

2,171

1,776

3,168

1,935

1,817

1,917

2,012

2,652

2,176

2,200

1,733

1,453

1,275

1,242

1,026

999

966

949

931

918

909

912

901

933

896

889

893

928

905

927

939

912

917

916

Gage 

height.

Feet. 

3.6

5.0

3.9

3.7

3.95

5.0

5.9

. 7.0

6-.1

9.4

5.95

5.75

6.0

6.25

8.6

7.0

7.0

5.7

5.0

4.7

4.4

4.1

4.1

3.95

3.8

3.8

3.8

3.8

3.75

3.75

3.7

3.7

3.7

3.7

3.75

3.7

3.7

3.7

3.7

3.7

3.7

Discharge.

Sec.-ft. 

2,091

5,158

2,459

- 2,006

2,842

5,357

8,737

11,812

9,747

22,498

9,465

8,043

10,588

10,872

19,667

12,931

12,658

7,874

5,138

3,659

3,392

2,791

2,464

2,285

2,179

2,029

1,992

1,903

1,896

1,866

1,898

1,849

1,804

1,810

1,940

1,813

1,847

1,854

1,795

1,816

1,799
68 SURFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Rio Grande belotv mouth of Devils River, Tex., for 1907

and 1908.

Day.

1907. 

1...............

2...............

3...............

5...............

6...............

7...............

8...............

9...............

10. ..............

11...............

12...............

13...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24. ..............

25...............

26...............

27...............

28. ..............

29...............

30...............

31...............

1908. 

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8............... 9.........:.....

10...............

11...............

12...............

13...............

14...............

15...............

16...............

18...............

19...............

20...............

21...............

22...............

23...............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

4.0

4.0

4.0

4.0

3.95

3.85

3.9

3.9

3.85

3.85

3.85

3.9

3.9

3.9

3.9

3.95

3.95

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0 

4.0

4.0

4.0

4.6

4.6

4.6

4.6

4.6

4.6

4.5

4.5

4.5

4.5

4.5

4

C

4.4

4.4

4.35

4.3

4.3

A Q

4.3

4.3 

4.3

Feb.

4.2

4.3

4.2

4.2

4.2

4.15

4.0

4.0

3 9

3.9

3.9

3.8

3.8

3

0

3.8

3.7

3.9

3.9

3.8

3.9

3.85

3.8

3.8

3.8

3.75

3 7

3.7

3 7

4.3

4.2

4.2 

4.2

4.2

4.2

4.1

4.2

4.2

4.2

4.1

4.1

4.05

4.05

4.05

4 05

4.1

4.1

4.15

4.1

4.1

4.05

4.0

Mar.

3.65

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.65

3.7

3.7

3.7

3.7

3.7

3.7

3.6 3.5"

3.5

3.5

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4 

3.4

3.4

3.4

3.4

4.0

4.0

4.0

4.0

4.0

3.9

3 9

3.9

3.9

3.9

3.85

3.9

3 Q

3 Q

3 Q

3.85

3.85

3.8

3.8

3

0

3

0

3

0

3

0

3.8

3.75

3.8

3.8

3.8

3.8

3.75

3

<7C

Apr.

3.3

3.2

3.2

3.2

3.1

3.1

3.7

3.7

3.7

3.7

3.7

3.7

3.5

3.55

3.6

3.5

3.55

3.55

3.4

3.4

3.4

3.4

3.4

3.35

3.2

3.5

4.1 

4.3

4.55

4.75

3.7

3.7

3.8

3.9

3 Q

3.~85

3.8

3.7

3.95

3.8

3.85

3.9

4.05

3.95

4.1

4.15

5.4

5.4

4.75

4.5

4.15

4.0

3.95

3.95

3.8

3.9

3.9

4.05

4.25

May.

4.7

4.7

4.7

4.5

4.5

4.45

4.25

4.25

4.25

4.2

4.2

4.3

4.2

4.2

4.2

4.1

4.15

4.2

4.2

4.1

4.4

4.1

3.95

3.9

4.1

4.3 

4.15

4.1

4.1

4.5

4.5

4.5

4.45

4.3

4.3

4.3~

4.2

4.2

4.2

4.1

4.1

4.05

4.0

4.0

3.95

3.9

3.9

4.3

4.3

4.05

3.95

3.9

3.95

5.25

4.55

4.15

4.1

4.05

3.95

3.9

3 Q

June.

4.65

4.95

5.0

5.05

5.1

5.15

5.25

5.3

5.45

5.65

5.7

5.8

5.8

5.55

5.4

5.5

5.85

6.85

6.25

0.4

6.05

6.0

6.0

5.95

5.8

5.85 

5.9

5.9

5.9

3.95

4.15

4.35

4.5

4.55

4.551

4.2

4.1

4.1

4.05

3.9

4.0

3.9

3.9

3.8

3.8

3.7

3.7

3.7

3.7

3.6

3.6

4.35

4.6

4.35

4.2

4.05

3.85

3:7

July.

5.9

5.9

5.9

5.9

6.05

5.25

5.2

5.55

5.6

5.4

5.4

5.45

5.65

5.7

5.75

5.6

5.65

5.5

5.4

5.4

5.4

5.3

5.35

5.15

5.1

5.25

5.1 

5.8

5.2

5.15

5.75

3.7

3.6

3.75

3.65

3.6

3.55]

7.8

5.95

5.0

5.0

4.65

4.3

4.1

4.0

3.9

3.8

3.8

3.7

3.7

3.7

3.75

3.85

4.15

3.95

5.0

6.0

5.0

4.35

4.95

5.9 

5.95

Aug.

5.35

5.5

5.45

5.2

5.15

5.1

5.2

5.25

5.0

5.0

4.8

4.8

4.9

4.4

4.3

4.35

4.25

4.15

4.3

4.35

4.4

4.4

4.4

4.4

4.4

4.4

5. ,4 

5.4

5.15

5.1

5.0

5.4

5.2

A Q

5.0

5.25

6.85

7.25

6.45

5.6

6.05

5.95

6.55

8.45

9.45

9.8

7.6

6.6

6.15

5.9

5.75

5.7

5.7

5.75

5.75

6.15

6.4

5.95

5.8

5.75

6.1 

6.4

Sept.

5.1

5.45

6.6

6.15

6.45

6.75

6.75

6.7

6.7

6.9

7.6

6.95

6.35

6.2

5.4

5.25

6.2

6.05

5.95

7.5

7.55

7.2

6.75

6.35

6.2

6.15

6.1 

6.15

6.05

6.0

6.45

6.85

8.2

8.7

8.8

8.25

8.45

8.1

7.4

6.9

6.45

7.0

7.25

6.95

6.65

6.2

6.0

5.65

5.45

5.3

5.2

5.0

5.0

4.85

4.7

4.7

4.7

4.65

4.45

4.4

Oct.

5.75

5.3

5.25

5.1

5.45

5.25

5.1

5.1

4.95

4.7

4.7

4.55

4.5

4.5

4.4

4.5

4.4

4.4

4.4

4.4

4.4

4.4

4.45

4.4

5.05

5.0

5.0 

5.0

6.9

4.95

4.9

4.25

4.2

4.2

4.15

4.1

4.1

4.5

4.4

4.35

4.15

4.1

4.0

4.0

4.0

3.95

3.9

3.85

3.85

3.8

3.8

3.8

3.8

3.8

3

0

3

0

3.8

3.8

3

0

3.8

3.8 

3.8

Nov.

4.9

5.2

5.3

4.9

5.55

5.55

5.5

6.65

8.65

7.65

6.95

6.5

6.05

5.85

5.8

5.0

5.35

5.3

5.3

5.2

5.1

5.05

5.0

5.0

5.0

4.9

4.95 

4.95

4.9

5.0

3.75

3.75

3.75

3:75

3.75

3.75

3.75

3.75

3.75

3.75

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.75

3.75

Dec.

5.0

5.0

8.3

7.35

G.45

0.2

6.05

0.1

0.0

5.95

5.95

5.9

5.7

5.5

5.5

5.4

5.3

5.2

5.15

5.1

5.1

5.0

4.9

4.9

4.8

4.8

4.8

4.7

4.7

4.7

4.7

3.75

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.75

3.7

3.7

3.7

3.7

3.7 

3.7
KIO GRANDE. 69

Daily discharge, in second-feet, of Rio Grande beloiv mouth of Devils River, Tex., for

1907 and 1908,

Day.

1907. 

1..........

2.........

3.........

4.........

5.........

6.........

7.........

8.........

9. ........

10.........

11.........

12.........

13.........

14.........

15.........

10.........

17.-----.-.

19.........

20. ........

22.........

23.........

24.........

26.---.....

27.........

28.....---.

OQ

30.........

31.........

1908.

 2..........

3.---.....

4.........

5.. .......

6.........

8....---..

9. ........

10.........

11........

12.........

13. ........

14........

15........

16........

17........

19

20........

21........

OT

23........

24. .......

20. .

27........

28. .......

29........

30........

31........

Jan.

3,560

3,520

3,490

3,450

03,320

3,080

3,150

3,110

2,980

a2,940

2,950

3,050

3,060

03,070

3,090

3,210

3,230

o3, 350

3,350

3,350

3,350

3, 360

a3,360

3,360

3,360

a3,260

3,360

3,360

3,360

3,360

"3,570

4,000

3,750

3,750

"3, 750

3,700

3,650

3,590

a3,540

3,360

3,380

3,400

3,420

a3,430

3,470

3,520

o3,370

3,340

3,300

3,270

o3, 240

3,230

3.220

3,210

o3,200 

3,100

3,000

3,000

3,000

3,000

03,000

Feb.

3,700

3,860

3,650

3,610

3,560

3,440

3,150

3,100

a2,900

2,900

2,900

2,740

o2, 740

2,740

2,740

o2,720

3,040

2,990

«2,780

2,890

2,790

2,690

o2,660

2,680

2,630

2,580

2,600

o2,630

2,960

2,730

o2, 690

2,690

2,680

2,680

o2,680

2,520

2,750

2,790

2,830

o2,860

2,660

2,660

2,550

o2,550

2,570

2,580

2,600

2,710

2,730

2,740

o2,760

2,640 

2,830

2,720

2,710

2,600

2,480

Mar.

2,620

2,620

2,620

2,620

2,620

2,590

2,560

2,530

2,520

02,510

2,510

2,510

2,510

02,510

2,500

2,470

2,440

o2,440

2,460

2,460

02,480

2,430

2,370

2,320

2,260

2,210

a2,150

2,130

2,110

2,100

o2,080

2,440

2,400

2,360

o2, 320

2,320

2,210

2,210

o2, 210

2,220

2,220

2,170

02,230

2,200

2,180

2,150

2,070

02.040

2,010

2,020

2,040

o2,050

2,050

2,050

2,050 

o2,000

2,040

2,020

2,010

1,990

1,920

ol,910

Apr.

2,050

2,020

2,060

2,100

o2,070

2,070

2,500

2,500

2,500

o2,500

2,500

2,500

2,280

o2,330

2,380

2,280

2,330

2,390

2,320

2,370

o2,430

2,400

2,360

2,290

2,140

o2,480

3,210

3,460

3,770

o4,020

1,870

1,890

2,030

2,170

2,190

2,150

o2, 170

2,140

2,040

o2,370

2,140

2,190

2,240

2,430

o2,260

2,470

2,540

6,520

4,440

3,640

o2,360

2,300 

2,300

o2,130

2,230

2,370

2,570

May.

3,920

3,920

3,920

03,510

3,570

3,550

3,260

3,330

3,400

03,370

3,370

3,520

3,350

3,350

03,340

3,130

3,140

03, 140

3,140

3,000

3,600

3,700

o3,310

3,100

3,030-

3,200

o3, 370

3,170

3

1 Oft

3,170

03,910

3

-IQA

3,250

3,220

2,990

3,060

o3,130

2.850

2,760

o2, 680

2,480

2, 480

2,380

2,280

2,130

1 990

1,990

03 140

3 ^90

2,950

2,910

3,090

6,310 

4,420

3,350

03, 210

3

AQO

2,850

2,740

June.

4,480

5,350

5,500

5,640

5,790

5,930

6,220

6,370

7,900

8,310

08, 310

7,670

7,280

7,530

8,400

I9 000

10, 220

a&, 820

10,520

8,030

07, 280

7,070

7 °60

7 31ft

2,830

3,220

3,610

3,900

o3 980

3 980

3,470

2,970

2,550

2,630

o2, 310

2,310

2.090

ol,870

1,870

1,870

1,870

1,710

3,010 

3 440

^0 fton

2 840

9 g4Q

2,380

2,190

July.

7,720

8,080

8,440

08,800

9,090

7,560

7,460

8,130

8,230

07,840

7,840

7,940

8, 420

08,510

8, 180

8,300

7 950

7,550

6,940

6,940

06, 180

6,030

6,520

6,030

o8,340

6 540

6,390

8 190

o igo

2,230

17,200

9 240

o5,160

4,300

3,440

2,950

2 7ftn

2,230

2,230

2,010

o2,010

2,060

2,230

2,510

3,220

o2, 840

8 960

05, 360

3,540

5,550

8,740

og 900

1

Aug.

6,840

7,350

7,180

6,340

o6,280

6,220

6,330

6,390

6,120

06,120

5,480

5,480

04,260

4,030

4,140

3,910

3,690

04,030

3,830

3,640

3,340

3,320

3,310

3,310

6,180

6,030

5,730

6 940

6,220

5,440

6,240

oll,340

I9 700

10,550

8,590

09,550

9,160

11, 470

18,830

o22, 750

24,500

15,900

12,000

10,250

8,540

8,180

8,020

o8,040

8,350 

10, 170

11,420

010,020

9 450

10,380

oil, 470

Sept.

6,150

7,620

12,470

10,570

11,830

13,100

o!3, 100

12,630

12,630

13,970

018,680

15,360

12,300

11,540

7,460

6,700

11,060

10,370

9,910

17,030

ol7,260

15,380

13,020

10,920

9,880

a, 880

9,350

9,190

11,620

13, 120

20,040

020,420

18, 190

19,040

17,560

14,620

012,630

11,280

12,660

13, 410

ol2, 470

11, 370

9,710

8,980

o7,680

6,900

6,310

5,920

o5,140

4,990

4,400 

3,800

03,660

3,740

3,720

3,410

3,390

Oct.

8,160

6,310

6,100

5,480

06,920

6,180

5,640

5,640

5,100

04,200

4,200

3,550

3,330

03,330

3,200

3,330

3,200

03,200

3,200

3,200

3,200

3,200

03,270

3,200

5,130

4,970

04,970

4,970

14,350

4,720

04,480

3,090

2,990

2,990

2,890

2,790

02,790

3,590

3,310

3,170

2,610

02,460

2,340

2,340

2,340

o2,280

2,250

2,210

2,210

02,180

2,140

2,110

2,070

02,030

2,020 

2,010

2,000

ol,990

1,980

1,980

1,970

ol,960

Nov.

4,480

5,770

6,190

4,480

07,280

7,280

7,050

12,200

o21, 150

16,450

13,160

11,040

08,890

8,280

8,100

5,270

o6,440

6,200

6,200

5,720

o5,240

5,100

4,950

4,950

4,950

04,660

4,850

4,850

4,660

05,050

1,900

1,900

1,900

1,900

ol,900

1,890

1,880

1,870

ol,870

1,890

1,860

1,880

ol,900

1,890

1,880

1,870

1,860

ol,850

1,840

1,830

1,820

ol,810

1,810

1,810 

1,810

o 1, 810

1,820

1 840

1,940

ol,940

Dec.

5,050

5,050

19,740

o 15, 760

11,870

10,570

9,680

9,590

8,890

8,400

08,160

8,010

7,420

6,820

06,820

6,360

5,910

5,460

o5,330

5,200

5,200

4,940

o4,680

4,680

4,370

o4,370

4,370

4,000

4,000

4,000

o4,000

1,920

1,860

1,840

1,830

ol,810

1,820

1,830

1,830

1,840

ol,850

1,850

1,850

1,850

1,850

1,850

ol,850

1,840

1 830

1,820

1,810

ol,790

1,800

1,800

1.800 

1,860

1,810

1,810

1,810

1,800

ol,800

a Dates of measurement.
70

Monthly di

SUEFACE WATEE SUPPLY, 1907-8. 

of Rio Grande below mouth of Devils River, Tex., for 1907 and 1908

Month.

1907.

April .....................................................

May......................................................

July......................................................

1908.

April. ....................................................

May......................................................

July.....................................................

Discharge in second-feet.

Maximum.

8,570 

3,860 

2,620 

4,020 

3,920 

12,000 

9,090 

7,350 

18,680 

14,350 

21, 150 

19, 740

21,150

4,000 

2,960 

2,440 

6,520 

6,310 

3,980 

17,200 

24,500 

20,420 

3,590 

1,940 

1,920

24,500

Minimum.

2,940 

2,580 

2,080 

2,020 

3,030 

4,480 

6,030 

3,310 

6,150 

3,200 

4,480 

4,000

2,020

3,000 

2,480 

1,910 

1,870 

1,990 

1,710 

2,010 

5,120 

3,390 

1,960 

1,810 

1,800

1,710

Mean.

3,270 

2,979 

2,428 

2,487 

3,385 

7,511 

7,664 

5,225 

11,637 

4,836 

7,363 

7,055

5,487

3,361 

2,688 

2,133 

2,649 

2,974 

2,752 

4,295 

10,649 

10,278 

2,422 

1,866 

1,830

3,991

Run-off 

(total in 

acre-feet).

201,064 

165,441 

149,276 

147, 987 

208, 106 

446, 916 

471,212 

321, 263 

692, 469 

297,382 

438, 129 

433, 785

3,973,030

206,658 

154,611 

131, 127 

157,626 

182,856 

163, 775 

264, 079 

654,783 

611,603 

148, 939 

111,015 

112, 522

2,899,594

EIO GRANDE AT EAGLE PASS, TEX.

The station was established in April, 1900'j by the International 

Boundary Commission. It is one-half mile above the highway bridge 

between Eagle Pass, Tex., and Ciudad Porfirio Diaz, Mexico, and 

about 540 miles below El Paso.

The right bank is alluvial deposit, with a bottom back of it about 

1,500 feet wide, which begins to overflow at gage height 22 feet. 

The left bank is shale rock rising abruptly from the river. The bed 

of the stream is constantly shifting, and frequent discharge measurements are necessary to determine closely the daily discharge. The 

section is subject to overflow at high stages. At low water, the depth 

is considerable and the velocity slow.

The observations at this station during 1907-8 have been made 

under the direction of the United States section of the International 

Boundary Commission.
EIO GRANDE.

Discharge measurements of Rio Grande at Eagle Pass, Tex., in 1907. 

[By J. K. Wilson and E. T. Rucker, jr.]

71

Date.

February 28 .......

March 7............

March 16...........

March 19. ..........

March 22. ..........

March 25...........

March 28. ..........

March 31...........

April 6.............

April 9.............

April 12.. ..........

April 15.. ..........

April 18.. ..........

April 21 ............

April 24............

April 27. ...........

April 30.... ........

May 3. .............

May 10. ............

May 13.............

May 16... ..........

May 22.............

May 25.. ...........

May 28. ............

May 31. ............

June 21 ............

June 24............

July 3.. ............

Area of 

section.

Sq.ft. 

2,082

2,015

2,007

2,121

2,116

2,115

2,129

2,080

2,083

2,153

2,112

2,121

1,994

1,923

1,877

1,843

1,853

1,832

1,777

1,722

1,690

1,751

1,774

1,710

1,696

1,618

1,632

1,561

1,593

1,551

1,537

1,710

1,631

1,591

1,570

1,539

1,711

1,977

1,906

1,757

1,777

1,751

1,711

1 669

1,838

1,843

1,853

1 QQQ

1,984

2,085

2,256

2,385

2,188

2,145

2,326

Gage 

height.

Feet. 

2.8

2.7

2.7

2.7

2.7

3.0

2.9

 > O

9 Q

3.2

3.0

3.1

2.8

2.7

2.6

2.6

2.7

2.6

2.5

2.5

2.4

2.5

2.5

2.4

2.3

2.2

2.1

2.1

9 J^

2.0

2.0

2.4

2.3

2.2

2.2

2.2

2.2

2.45

3.3

3.4

3.1

2.9

3.0

9 Q

2.8

2.8

2.7

2.9

2.9

3.1

3.3

3.7

3.85

4.2

4.4

4 1

4.1

4.4

Discharge.

Sec. ft. 

4,977

4,375

4,194

4,306

4,284

4,789

4,569

4,422

5,021

4,556

4,619

4,119

3,787

3,760

3,763

3,907

3,616

3,563

3,128

3,054

3,435

3,215

2,968

2,838

2,873

2,642

2,640

2,565

2,526

3,231

3,097

2,920

2,661

2,579

2,721

3,475

5,552

5,512

4,799

4, 708

4,369

4,617

4,314

4,228

3,838

5,048

5,081

5,406

5,701

6,893

8,066

6,942

7,728

8,511

10, 190

8,289

8,045

9,721

Date.

July 6.... ..........

July 10.. ...........

July 13.. ...........

July 16. ............

July 19

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

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

July 28.............

August 27..........

Area of 

section.

Sq.ft. 

2,372

2,032

2,064

1,954

2,010

1,814

1,788

1,856

1,803

1,699

1,629

1,464

1,478

1,450

1,368

1,320

1,282

1,469

1,826

2,260

2,370

2,703

2,213

2,357

3,119

2,363

2,260

2,247

2,410

1,739

1,665

1,613

1,578

1,592

1,814

1,756

1,905

2,124

3,021

3,131

2,875

2,614

2,086

1,981

1,919

1,975

1,864

3,132

2,756

2,476

2,217

2,037

1,902

1,951

1 847

1,691

Gage 

height.

Feet. 

4.3

3.8

3 O

40

3.4

3.3

3.7

3.3

3.0

3.0

3.0

2.6

2.5

2.4

3.3

3.7

4.7

A Q

5.55

4.5

4.2

5.05

4.4

4.3

3 O

4.55

3.2

9 O

2.7

2.7

9 7

2.6

3.35

3.5

3.8

4.0

6.45

5.55

4.3

3.9

3.6

3.4

3.2

3.4

3.5

5.5

i 8

4.4

4.1

3.6

3.5

3.3

3.2

3.1

Discharge.

Sec. ft. 

9,629

7,354

7,683

7,416

6,375

5 643

6,873

7,248

5,657

5,523

4,882

4,922

4,853

4,394

4,183

3,880

5,527

7,668

11,869

15,802

11,296

9,189

16, 792

13,001

9,621

9,206

7,906

10, 695

4,882

4,704

4,078

3,961

3,847

3,188

5,724

5,842

6,770

8,066

22,559

12, 440

9,400

9,957

6,619

6,311

5,956

6,564

5,783

13, 656

12, 564

8,400

8,433

7,618

5,895

5,967

5,453

4,751
72 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Grande at Eagle Pass, Tex., in 1908. 

[By J. K. Wilson.]

Date.

March 10. ..........

March 13. ..........

March 27...........

Aprils.............

April?.............

April 10. ...........

April 13............

April 16............

April 19. ...........

April 22..... .......

April 25............

April 28.. ..........

April 30.. ..........

May3..............

May6..............

May9.. ............

May 13... ..........

May 16...... .......

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

May 22.. ...........

May 24... ..........

May 28.. ...........

May 31.. ...........

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

Area of 

section.

Sq.ft. 

1,688

1,615

1,604

1,607

1 COQ

1,477

1,416

1 469

l' enri

1 467

1,407

1 OJQ

1 608

l' Pk^Pl

1 AQft

1 AQJ

1,500

1 AM

1,468

1,456

1,420

1,428

1,350

I Oflft

1,315

1 9QS

1,266

1 9*U»

1,291

1,335

1,599

1,441

2

1 on

1,459

1,396

1,363

1,311

1,460

1,422

1,456

1,480

1,435

1,448

1,352

5,610

1,529

1,987

1,865

2,006

1,678

1,516

2,012

1,997

1,901

2,183

2,019

1,847

Gage 

height.

Feet. 

3.0

2.9

2

0

9 7

2.6

2.6

2

C

2

C

2.5

2

C

2.3

2

0

2

C

2 A

2

0

2 9

9 9

2.2

2 1

2 1

2.1

2 1

1 9

1.8

1.7

1.7

1.7

1.7

1.7

1.8

1.8

2.3

2.0

4.4

2.75

2.1

9 n

2.0

2 7

2.5

2

0

2.2

2.0

2.S

3.1

9.8

A c

o 3

2.3

2

C

2.5

2 9

9 9

1.8

1.7

1.5

2

1 C

1.7

1.5

Discharge.

Sec.-ft. 

4,753

4,366

4 9A7

4,320

4,024

3,616

3,757

3,663

3

97C

3.066

2,694

3,728

3,510

3

1 P\°.

2 7QQ

2

QO£>

3,025

2 7Q9

2 7in

2,751

2 ftfS

2,568

2 9fi1

2,232

2 179

2 1 9ft

2 121

3,340

2.843

9 cl i

3,691

3,273

3,107

2,874

3,435

3,284

3 494

3,430

2 Q41

2,778

57, 214

8 QQQ

4

07 A

3.989

3

QAQ

4,119

2 Q74

2,718

2,486

2,112

3,50S

2,641

2,736

Date.

July 6..... .........

July9..... .........

July 12.... .........

July 16.. ...........

July 19.. ...........

Tnlv 99

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

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

Aiiornqt 99

October 22. ........

October 28.........

November 30

Area of 

section.

Sq.ft. 

1,818

1,778

1,566

1,499

1,515

1,438

1,577

1,830

2,496

1,668

3,436

2,637

3,158

4,193

2,585

2,485

2,502

2,647

2,746

3,328

3,814

3,683

2,318

2,803

2,197

2,086

1,860

1,773

1.712

1,680

1,639

1,781

1,613

1,427

1.421

1,455

1,371

1,377

1.329

1,325

1,315

1,324

1,360

1,335

1,347

1,355

1,363

1,318

1,315

1,302

1,285

1,281

1,265

1,284

1,270

1,264

1,272

1,267

1,264

Gage 

height.

Feet. 

1.4

3.3

2.1

1.7

1.7

1.6

1.65

3.0

4.1

3.0

6.7

4.5

5.25

7.4

4.6

4.0

3.9

4.2

4.3

6.15

6.7

6.35

4.8

5.3

4.0

3.3

2.85

2.5

2.3

2.2

2.1

2.3

1.9

1.7

1.6

1.6

1.6

1.6

1.6

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.4

1.4

1.4

1.4

1.4

1.4

Discharge.

Sec.-ft. 

2,538

4,774

2,351

2,081

2,052

1,854

2 O94

4,663

9,067

4,446

17, 104

12, 951

25, 893

11, 921

8,071

7,564

8,500

8,375

17, 510

21,680

18,968

10,783

13,389

8,260

5,345

4,584

4,069

3,379

3,252

3,090

3,567

3,314

2,828

2,652

2,738

2,412

2,418

2,311

2,239

2,228

2; 234

2,381

2,269

2,355

2,316

2,313

2,291

2,276

2,229

2,199

2,156

2,153

2,205

2,251

2,175

2,212

2,212

2,169

a Velocity obtained from floats.
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74 SURFACE WATER SUPPLY, 1907-8.

Daily discharge, in second-feet, of Rio Grande at Eagle Pass, Tex., for 1907 and 1908.

I>ay.

1907. 

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.......

9fi

27.......

28.......

29.......

30....... 

31.......

1908. 

1.......

2.......

3.......

4.......

5.......

6.......

7.......

8.......

g

10.......

11.......

12.......

13.......

15.......

16.......

17.......

18.......

19.......

20.......

21.......

22.......

23.......

24.......

25.......

26.......

27.......

28.......

29.......

30.......

31.......

Jan.

4,980

4,980

a4,980

4,640

4,510

o4, 370

4,330

4,280

4,240

o4,190

4,230

4,270

4,300

4,290

04.280

4,280

4,790

4,570

"4,570

4,530

4,480

4 440

4' 430

04,320

4,220 

a5,020

4,820

4,880

4,690

4,630

4,370

4,320

4

0Cfl

4,430

4,290

o4,120

3,960

3,900

o3,840

3,730

3,620

3,620

o3,620

3,660

3,710

o3,760

3,730

3,700

o3,660

3,530

3,410

03,280

Feb.

4 600

4,580

o4,560

4,560

4,560

04, 620

4,450

4,280

04, 120

4,250

4,110

o3, 790

3

QA(\

% 7fin

o oqn

3 ctin

o3 910

3,720

03,620

3 640

3,670

o3,560

.......

3

1 Af)

3 inn

2 QAfi

2,820

a2,690

2,890

3,090

o3, 620

3,510

3,360

3

9in

2,950

2,810

2,820

a2,840

2,900

o2, 910

2,790

2,790

02,790

2,750

o2,710

.......

Mar.

3,760

3,440 "3, 30

3,050

3,050

3,050

03,050

3,350

o3, 450

3,380

3,310

o3, 220

3,170

3,010

o goo

2,840

2

090

2

onn

2

oon

2,640 

02,640

2,730

2,740

ix9 7cn

2,710

2,660

2,590

2 enn.

2,570

i2,570

2,550

o son.

02,460

2 400

2

onn

2

Onn

2,380

2

oen

2,270

2,250

2,240

o2, 230

2,210

2,190

o2, 170

2,160

2,250

2,130

o2,120

Apr.

2 640

2,640

o2,560

2,540

3,110

3,170

3 930

3 040

3 0,40.

2

QKn,

2,870

2,570

2,610

2

ftorj

2 fififi

2 fiflfi

03,600

5,180

5,550

2,120

2,120

2

OOfJ

2 97A

2 9**ft

2

oqn

2 9fifi

w2 400

3 Q7ft

3,010

2 Q9ft

02,840

2,840

3 240

o'7nn

6,060

3

01 n

3,270

o3,270

3,270

3,190

o3, 110

2,990

02,870

May.

5,580

5,600

o5,510

o4,800

4,660

5,000

4,730

4,640

4,570

4 990

4,450

04,620

4,620

4,620

04,230

3,960

03,840

4,320

4,680

o5,050

5,060

5,070 

5,080

3,610

a3,440

3,300

03,180

3,260

a 3, 420

3 con

3,650

3 7fift

3,430

03,430

3,330

2,850

02,780

o49,560

a!2, 630

6,190

4,120

o3,420

3,440

3,850

o4,270

June.

5,080

o5,490

5,700

5,400

6 600

a7,090

8,070

8 7AA

7,850

o6,940

6,660

7,110

o7,840

8 71 n

10 000

10 900

a ct Qon

9 160

8,210

8 130

a8,040

4,130

4,000

3

ocn

3 7ln

a4,210

4,110

a4,120

3 930

3,170

a2,970 9 ggQ

9 Kflft

2,660

O 9 ^gQ

2,490

a2,520

2,420

a2,110

7,060

4,260

a3,510

2,930

2,740

July.

8,760

a9, 720

9 430

9,530

8,490

8,040

7,350

7 fl^fl

n ft ncfl

9 con

8

KCn

a7 220

7,400

7 QQO,

fjQ 970

8 1 7n

7

1 on

6,770

7 000

n£ ftAf)

6,520

6,870

2

£>cn

2 7AA

2,740

o2,510

10,800

o4 670

4,' 870

4,570

ffO ^ft

2 QQO.

2,180

2,150

al,950

1,850

1,850

al,850

5,060

2,810

o2,020

7,840

6,830

a4,560

3,960

6,950

08,540

Aug.

7 060

a7,250

6 280

5,920

5,670

5,240

5,170

4 900

5,010

o4,920

4 900

4,980

4 740

4

OQA

a4,290

4,180

4,180

4,150

S

ain

03,880

6,000

5,530 

05,430

4,620

13,340

13,640

10,370

7,750

6 900

al5, 660

24, 690

026,200

24,640

all,280

9,670

10,000

o9,100

9,100

8,580

07,560

9,060

11,310

08,500

8,000

11,000

a8,020

Sept.

5,790

o9,140

11,870

10, 190

ol2,060

12, 640

14,340

16,050

ol6, 2SO

1 Q Q7O

11,730

all, 300

10, 940

9

c.in

alO,240

8 980

8 7RO

a!6 980

16,030

n-[ o nnn

1^ 740

10, 660

o9,620

9,620

09,210

10,100

9

Q«n

on K4fl

23,200

22,840

OQ OOft

i Q oAn

alO, 780

15, 470

14, 430

11,410

9,640

6,170

o5,550

5,180

4,840

a4,580

4,220

4,140

o4,070

3,770

3,470

03,380

Oct.

9,210

7,910

o7,910

7,910

11, 350

olO.OSO

6,820

6,380

5,950

o 4, 730

4,220

04,700

4

Kcn

04,080

4,040

q nf*ri

3 9°0

3,880

3,700

3

1 an

5,720

5,720

6,470

7,220 

5,840

3,380

3,380

o3,330

3,090

3,330

3,870

3,590

o 3, 250

3,110

3,030

2,750

2,680

o2,650

2,680

2,710

a2,740

2,630

2,520

o2,410

2,410

2,420

o2,420

2,380

2,350

o2,260

Nov.

5,840

5,530

o6,970

7,090

7,220

7,940

o8,070

8,070

a22, 270

28,260

17,570

a!2,440

11,100

in 1 ^o,

9,810

7 ion

a 6, 620

6,620

6,460

6,130

5,960

6,870

6,560

o6,560

2,240

2,230

o2,230

2,230

2,230

a2,230

2,270

2,280

2,270

a 2, 270

2,260

2,260

02,260

2,280

2,300

02,320

2,320

2,310

o2,310

2,310

2,300

o2,290

2,290

2,280

02,280

Dec.

6,640

5,910

oll,760

22,500

a 13,500

1° 950

12, 640

11,180

9,800

a8,250

8,410

8.420

8,110

a7,620

6,910

6,400

5,810

a5,970

5,760

K C7n

o5,450

5,130

5,000

4,880 

a 4, 750

2,260

2,240

2,220

2,210

o2,200

2,180

2,170

a2,160

2,160

2,160

a2,150

2,200

2,150

2,200

2,220

2,230

o2,250

2,220

2,200

o2,180

2,190

2,200

a2,210

2,210

2,210

02,210

2,200

2,190

2,180

a2,170

Dates of measurement.
EIO GRANDE. 75 

Monthly discharge of Rw Grande at Eagle Pass, Tex., for 1907 and 1908.

Month. 

1907.

April.... . ................................................

July.....................................................

November. ........................... ..................

Tli6 vG&r

1908.

March. ..................................................

April....................................................

May.....................................................

July.....................................................

Discharge in second-feet.

Maximum.

5,020 

4,620 

3,760 

5,550 

5,600 

10,900 

9,720 

7,250 

16,980 

11,350 

28,260 

22,560

28,260

4,880 

3,620 

2,750 

9,700 

49,560 

4,210 

10,800 

28,600 

23,230 

4,160 

2,320 

2,260

49,560

MlniTrmm.

4,190 

3,560 

2,640 

2,530 

3,840 

5,080 

5,640 

3,880 

5,530 

3,190 

5,530 

4,750

2,530

3,280 

2,690 

2,120 

2,120 

2,780 

2,110 

1,850 

4,620 

3,380 

2,260 

2,230 

2,150

1,850

Mean.

4,479 

4,035 

3,066 

3,053 

4,712 

7,666 

7,806 

5,239 

11,579 

5,621 

9,262 

8,337,

6,238

4,058 

3,022 

2,408 

3,373 

5,588 

3,320 

3,722 

11,905 

11,056 

2,959 

2,270 

2,199

4,657

Run-off 

(total in 

acre-feet).

275,405 

224,073 

188,509 

181,646 

289,745 

456, 158 

479,980 

322, 135 

688,978 

345,600 

551,107 

512,608

4,515,944

249,521 

173,811 

148,086 

200, 707 

343,596 

197,573 

228,853 

732,040 

657,877 

181, 924 

135,074 

135,193

3,384,255

BIO GRANDE NEAR NTJEVO LAREDO, TAMATJLIPAS, MEXICO, AND

LAREDO, TEX.

The station was established near Nuevo Laredo, Mexico, in April, 

1900, by the International Boundary Commission. It was intended 

to measure the river from the. highway bridge connecting Laredo 

with Nuevo Laredo, Tamaulipas, and the gage was established on 

the right bank just above the bridge. Measurements were kept up 

by the Mexican section of the commission until September 24, 1900, 

and gage heights were read until February 28, 1903, but the results 

were so conflicting that the station was abandoned. In July, 1903, 

a cable station was established by the commission about 2 miles above 

Nuevo Laredo, and on August 1, 1903, regular meter measurements 

and gage heights were started. The new gage heights are not comparable with the old. This station is about 670 miles below El Paso.

The river bed at the new station is constantly shifting, and frequent 

discharge measurements are made to determine closely the daily 

discharge. The banks at the new station are not subject to overflow.

The observations at these stations have been made under the 

direction of the Mexican section of the International Boundary 

Commission.
76 SURFACE WATER SUPPLY,' 1907-8.

Discharge measurements and gage heights for the years 1900 to 

1904, which have not hitherto been published by the United States 

Geological Survey, are given herewith, together with those for 1907-8.

Discharge measurements of Rio Grande near Nuevo Laredo, Tamaulipas, Mexico, in 1900.

[By E. Zayas and Luis Varela.]

. Date.

May7.. ............

Mays..............

May 9.. ............

May 15...... .......

May 23.. ...........

May 28. ............

May 31. ............

TnnA 99

July 6..............

July 9... ...........

July 16.. ...........

July 20... ..........

Area of 

section.

Sq.ft. 

2,352

2,223

2,388

11,652

2,901

2,452

2,581

6,137

2,793

2,470

2,379

2,564

2,621

2,459

2,436

2,707

2,407

2,576

2,334

3,640

3,152

Gage 

height.

Feet. 

0.8

.7

1.2

12 0

3.0

2.2

1.5

8.0

1.7

1.6

1.6

1.3

1.6

1.3

1.2

2 1

1.4

1.5

0.8

3.5

2.6

Discharge.

Sec.-ft. 

5,253

6,437

75, 141

13,377

9,710

6,483

31,544

7,311

5,852

6,333

7,134

6 445

5,576

8,142

6,672

6,950

4,719

18, 607

10,039

Date.

July 24.. ...........

July 26. ............

July 28.. ...........

July 30. ............

August 22.. ........

Area of 

section.

Sq.ft. 

2,653

3,025

2,713

3,216

3,670

4,083

7,170

4,727

3,463

3,327

3,984

3,580

3,099

3,157

4,047

2,451

3,115

2,974

2,801

7,283

Gage 

height.

Feet. 

1.5

2.2

1.6

2.5

3.0

3.7

6.85

4.0

3.1

2.35

3.3

2.5

2.05

2.1

2.0

3.8

1.25

1.9

2.0

1.6

8.55

Dtecha»ge.

Sec.-ft. 

6, 178

9,256

7,129

9,728

133, 283

16, 279

46, 528

17, 533

11,688

9,236

15,059

12,069

8,858

10, 669

10, 254

ol7,872

6,079

9,174

8,626

7,248

48,715

o Observation made on September 7 and 8, 1900.

Discharge measurements of Rio Grande near Laredo, Tex., in 

[By Luis Varela.]

Date.

AiicrnQf" I

October 19. ........

Area of 

section.

Sq.ft. 

2,173

1,654

1,647

1,588

1,885

1,791

1,854

2,216

7,485

5,875

2,310

2,085

2,171

2,518

2,256

2,249

2,209

Gage 

height.

Feet. 

3.55

2.60

2.30

2.30

2.20

2.90

3.0

3.8

12.55

9.45

3.7

2.8

3.9

4.2

3.8

2.9

2.6

Discharge.

Sec.-ft. 

6.303

3,680

3,270

2,965

2,625

4,755

4,446

4,665

7,476

034,291

50, 702

7,817

5,631

7,529

9,966

8,053

5,355

5,096

Date.

October 22.........

October 26.........

October 30.........

December 23 .......

Area of 

section.

Sq.ft. 

^,059

1,805

1,753

1,653

1,629

1.421

L.454

1,426

1,421

1,452

1,408

1,363

1,452

1,320

1,327

1,323

1,351

Gage 

height.

Feet. 

2.5

2.45

2.4

2.1

2.0

2.0

2 0

1.9

1 9

1 9

1.9

1.8

1.8

1.7

1.7

1.7

1.7

Discharge.

Sec.-ft. 

4,292

3,084

2,721

2,556

2,594

2,360

2,461

2,303

2,193

2,357

1,844

1,885

2,092

2,067

o Extreme high water September 10,1903, due to backwater from floods in streams below Laredo.
RIO GRANDE. 77

Discharge measurements of R'io Grande near Laredo, Tex., in 1904. 

[By Luis Varela.]

_-, ; Date.

March 14...........

March 19. ..........

March 28. ..........

Aprils.............

April 12.. ..........

April 16............

April 21.. ..........

April 23............

April 26............

Mayl..............

May 5..............

May 10

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

May 22. ...........

May 24. ............

May 28............

May 31.. ..........

Area of 

section.

Sq.ft. 

1,323

1,301

1,330

1,357

. 1,370

1,355

1,351

1,369

1,372

1,364

1,390

1,403

1,406

1,385

1,378

1,365

1,299

1,291

1,271

1,277

2,748

1,336

1,321

1,310

1,318

1 991

1^270

1,258

1.262

1,051

1,046

1,359

2,346

1,490

1,559

1,733

1,449

Gage 

height.

Feet. 

1.7

1.7

1.6

1.6

1.6

1.5

1.5

1.5

1.5

1.55

1.45

1.5

1.5

1.5

1.5

1.5

1.5

1.3

1.3

1.3

1.3

4.0

1.3

1.3

1.3

1.3

1.6

1.6

1.55

. 1.5

1.4

1.0

1.0

1.9

42

2.30

2,40

3.50

1.90

Discharge.

Sec.-ft. 

2,208

2,317

2,213

2,170

2,332

2,316

2,260

2,216

2,277

2,305

2,281

2,309

2,345

2,360

2,374

2,340

2,325

2,166

2, 147

2,077

2,069

9 780

5,146

2,304

2,269

2,242

2 fi74

2,145

2,116

1,225

1,274

8,298

3,033

3 09Q

6,106

2,456

Date.

July 5

July 9...... ........

July 12..... ........

July 18. ............

July 23.. ...........

July 26... ..........

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

December 23

Area of 

section.

Sq.ft. 

1,433

1,513

3,786

2,124

1,840

1,837

1,707

1,600

2,550

1,374

1,158

1,297

1,196

1,077

1,130

1,056

1,196

1,429

3,135

8,040

4,277

3,750

2,979

2,991

2,992

4,709

4,470

3,422

3,512

2,957

2,427

2,455

2,275

2,197

2,386

2,675

2,332

2,271

2,189

Gage 

height.

Feet. . 

2.00

2.10

8.10

2.5

1.9

1.8

1.3

1.2

3.9

1.6

1.4

1.4

1.5

1.2

1.1

1.2

1.4

1.9

6.5

17.7

4.8

4.0 4*2

8.5

7.0

5.2

5.8

4.6

4.3

3.2

2 7

2.6

2.4

3.4

3.1

3.1

2.9

2.4

Dis-

- ifliarge.

 Sec.-ft. 

2,507

2,663

21,047

4,067

2,746

2,611

2,389

1,981

7,944

2,448

1,840

2,216

1,948

1,500

1,592

1,448

1,857

2,718

19,098

48,235

18, 548

15,598

11,860

8,454

8,779

28,841

21,438

14,236

12, 750

8,384

7,368

6,460

5,437

5,051

4,838

6,715

6,093

6,144

5,162

4,216
78 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Grande near Lareda, Tex., in 1907. 

[By Luis Varela.]

Date.

April 25. ...........

Mayl... ...........

May 7... ...........

May 17.............

May 22

June 20.. ...........

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

Area of 

section.

Sq.-ft. 

1,839

2,016

o Q33

1,891

2,063

1,855

1,628

1,633

1.613

1,562

1,463

1,371

1,366

1,479

1,547

1,467

1,615

2 n4fl

2,416

2,495

2 4^R

2,458

2,068

2,180

2,193

2,476

2,442

2,301

Gage 

height.

Feet. 

3.9

3 9

3.8

3

0

3.8

3.8

3.8

3.7

3.6

3.6

3.6

3.4

3.3

3.3

3.3

3.0

3.0

3.2

3.3

3.1

3.0

3.45

4

0C

4.3

3 9

4.1

4.4

4.3

4.8

4.8

5.45

5.3

5.0

5.6

Discharge.

Sec.-ft. 

4,388

4,862

4,835

5,102

4,647

4,814

4,638

3,770

3 ono

3,246

3,238

3,226

2 R77

2,674

3,274

2 R7O

3,570

5,642

5,557

5,051

4,801

5,426

6,114

8,189

11, 795

8,950

Date.

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

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

Area of 

section.

Sq.ft. 

2,526

2,058

1,973

1,998

1,975

1,864

1,475

2,575

3,353

2,435

3,392

2,347

1,994

1,993

1,966

1,871

2,121

2,375

2,570

4,193

2,263

2,213

2,635

2,447

2

OQQ

Gage 

height.

Feet. 

5.85

5.05

4.7

4.4

4.2

4.4

4.4

4.0

3.7

3.4

4 H

5.8

6.1

7.25

5.5

7.65

5.4

4.65

4.8

4.0

4.0

4.0

4.7

5.0

7.85

9.7

5.0

4.4

4.4

8.0

5.6

5.2

4.5

4.3

4.2

Discharge.

Sec.-ft. 

11, 952

7,270

5,698

6,305

4,890

3,815

3,159

6

KKA

12, 239

10,545

18, 577

9,452

6.808

7,010

4 4Qfi

4,216

4,177

8,269

7.823

14,267

20,511

8

7Qn

6,889

10, 675

9 1Q4

7.044

6,086

' 5,557
BIO GRANDE.

Discharge measurements of Rio Grande near Laredo, Tex., in 1908. 

[By Luis Varela.]

Date.

February 10........

February 20........

February 25........

March 20...........

March 25. ..........

AprH.5.. ...........

April 11. ...........

April 13. ...........

April 16. ...........

April 19............

April 21............

April 25.. ..........

April 30............

May 6.. ............

May 11.... .........

May 15... ..........

May20.... .........

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

May 30. ............

Tii HA *^Q

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

Area of 

section.

Sq.ft. 

2,332

2,018

1,985

1,964"

1,893

1,734

1,713

1,628

1,606

1,592

1,566

1,606

1,627

1,666

1,505

1,502

1,369

1,311

1,275

1,390

2,271

2,848

4,620

2,092

1,881

1,693

1,567

2,025

1,359

2,702

1,847

1,712

1,560

1,470

1,334

1,334

1,452

1,275

height.

Feet. 

4.0

3.9

3.8

3.7

3.8

3.2

3.3

3.2

3.1

3.1

3.0

3.0

3.1

3 1

2.9

2.9

2.7

2.6

2.6

2.8

5.5

7.3

3

K

11.0

3.5

3.0

3.5

3.3

5.0

3.3

6.25

3.9

3.5

3.2

2.9

2.7

2.5

3.0

2.3

Discharge.

Sec.-ft. 

5,123

4,056

4,180

5,092

3,431

3,478

3, 282

3,030

2,819

2,872

2,960

3,087

*> fifiC

2,578

2,065

2,060

*> *>*\d.

17,356

3,611

3,082

3,478

3,161

6,762

2,872

12,206

4,302

3,222

,263

,130

Date.

July 14.............

July 19.............

July 24.'... .........

July 28.. ...........

Onf rkVipr 1 %

Area of 

section.

Sq.ft. 

3,381

1,638

1,316

1,274

2,404

2,219

2,639

3,169

4,687

2, 723

3,643

4,658

2,177

2,451

3,493

3,393

2,869

1,905

2,085

1 830

1,878

1,958

1,607

1,570

1,523

1,447

1,440

1,425

1,451

1,390

1,397

1,424

1,418

1,363

1,492

1,592

1,487

1,411

Gage 

height.

Feet. 

8.5

3.5

2.6

2.4

5 4.

4.5

6.3

7.55

10.7

5.8

8.7

10.4

5.0

5.5

8.2

7.7

6.2

4.4

4.0

3.6

3.9

3.2

3.3

2.9

2.7

2.5

2.3

2.5

2.1

2.3

2.6

2.5

2.5

2.7

2.9

2.6

2.4

Discharge

Sec.-ft. 

27,439

3,902

- 2,354

2,219

9,127

6,110

11,556

14,561

37,745

10,«71

26,127

32,261

8,052

8,789

22,491

20,511

14,007

6,853

4,711

3,986

3,330

4,310

3,023

3,112

2,769

2,440

2,336

2,196

2,384

2.040

2,170

2,311

2,330

2,342

2,636

3,010

2,466

2,272

Daily gage height, in feet, of Rio Grande near Nuevo Laredo, Tamaulipas, Mexico, for

1900, 1901, and 1902.

Day.

1900.o 

1...............

2

3...............

5............... 

6...............

7...............

8...............

9............... 

10...............

11...............

12...............

IQ

14............... 

15...............

16...............

17............... 

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

Jan.

.......

.......

.......

.......

Feb.

.......

.......

.......

.......

.......

Mar.

.......

.......

.......

.......

Apr.

.......

.......

.......

.......

May.

3.35

1.9

1.4

1.05 

1.0

.85

.7

1.15

.85

.8

1.1 

1.0

1.05

8.7

9.15

3.9 

2.55

2.0

2.75

2.4

2.1

2.75

3.75

2.85

June.

6.75

3.3

2.0 *> c\x*

2.4 

1.85

1.65

1.7

1.65 

1.5

1 ^

1.4

1 ^

1.3 

1.35

1.6

1.45 

1.65

1.95

1.6

1.4

1.3

1.3

1.1

1.2

July.

3.4

1.8

1.25 i "><;

1.3

1 4.^

1.85

2.1

1.5 

1.5

1 91

.95

.8

1.2

2.6

3.5

3.3

2.9

3.35

2.6

2.0

1.75

1.55

1.5

1.8

Aug.

2.9

2.75

3.0

2.85

3.3

3

OE

3.7

3.45

3.9 

6.85

4.85

4.55 

4.0

3.65 

3.4

3.1

2.85 

2.6

2.5

2.35

2.35

3.3

2.65

2.7

2.5

Sept.

1.85

2.7

2.1

1.8

1.85 

2.0

3.8

3.1

2.2 

1.65

1 45

1.25 

1.4

1.55 

1.9

2.1

2.1 

2 0

1.9

1.75

1.6

1.7

8.1

8.55

9,95

Oct.

3.2

2.75

2.35

2.5 

2.3

2 2

2.2

2.3 

2,05

2.0

1.9

1.8

1.75 

1.7

1.6

1.5 

1.8

1.8

2.05

2.0

2.1

2.05

2.05

2.15

Nov.

1.5

1.5

1.6

1.55

1.35 

1.3

2.2

1.25

1.3 

1.2

1.2

l.'l 

1.1

1.0 

1.0

1.1

1.1 

1.1

1.1

1.1

1.15

1.0

1.0

1.0

1.0

Dec.

......

......

......

......

a- Gage heights for 1900 complete so far as Mexican records exist.
80 SURFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Rio Grande near Nuevo Laredo, Tamaulipas, Mexico, for 

1900, 1901, and 1902 Continued.

Day.

1900. 

26...............

27...............

28...............

29...............

30............... 

31...............

1901. 

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

1902. 

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

Jan..

.......

2.3

2.3

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2 9

2 9

2.3

2

0

2.3

2

0

2.3

2 q

9 3

2.3

9 ^

2.3

Feb.

0.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

2.3

2.3

2.3

2.2

2.2

2.2

2.1

2.1

2.1

2.0

2.0

2.0

 1.9

1.9

1.9

1.7

1.7

1.7

1.7

1.6

1.6

1.6

1.4

1.4

1.4

1.3

1 q

1.3

.......

Mar.

0.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

1.2

1.2

1.2

1.1

1.1

1.1

1.0

1.0

1.0

.9

.9

.8

.8

.7

.7

.6

.6

.5

.5

.5

.5

.5

K

K

K.

45

.4

.4

.4

Apr.

0.25

.25

.25

.25

.25

.25

.25

.25

9K

.25

9*

.25

.25

.25

.25

.25

.25

.25

.25

.25

.25

.25

.25

.25

.25

.25

.25

.25

.25

.25

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

1.35

1 1 f\

.85

7K

.7

.65

.6

45

.4

.4

.4

.4

.4

May.

2.35

2.25

2.0

1.9

1.5 

1.5

5.6

3.5

3.0

3.0

2.5

2.5

2.5

2.5

4 5

3.0

3.0

2.5

2.5

2.5

2.5

3.5

3.0

2.5

2.5

2.5

2.5

3.2

2.9

2.5

2.5

2.5

2

C

2.5

2.8

.4

.4

.4

1.8

3.65

2.6

1.85

1.7

1.3

.95

.85

.8

7K

.7

.6

.6

2.35

4.6

2

0

1.65

1 9^

1 05

1.0

9

OK

.8

.8

.7

.7

June.

i Q

1.15

1.05

95

2.85

2.4

2.4

1.9

1.8

1.6

1.5

1 %

1.4

1.4

1.4

1 °.

1.3

1.2

1.2

1.2

1 9

1.0

1.0

 1.0

1.0

1.0

1.0

.9

.9

.8

.8

.7

.7

.6

1.0

.7

.65

.6

.6

.6

.5

.5

.5

.6

.7

.8

.7

.65

.7

.65

.6

.85

1.0

7f>

65

.6

.7

.7

July.

2.15

1.65

1.95

2.6

2.5 

2.7

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.6

.5

1 45

1.8

QC

7K

.6

.55

.5

.5

.6

.7

1.0

1.4

1.65

2.95

2.45

1.85

1.85

1 S^

1.7

1.7

1.85

2 9

3.0

5

C

4.7

3.7

3.6

3.95

Aug.

2.05

1.8

1.8

2.25

2.1 

2.05

.4

.4

.4

.4

.4

.5

.6

.7

.7

.9

.9

.7

.5

.4

.4

.5

.6

.7

.8

.8

.8

.8

.8

.8

.9

.9

.9

.9

g

.9

.9

3.3

3.05

2.65

2.25

2.1

2.0

1.7

1.2

1.1

1.3

1.05

.8

.7

.6

2.8

2.1

1.7

1.7

1.65

1.5

1.5

1 45

1.4

1.4

1.3

1.6

2.45

2.45

2.0

1.7

Sept.

5.35

3.5

3.0

2.7

2.3

.9

.9

.9

.9

2.0

2.0

3.0

4.0

4.5

5.5

3.5

3.0

3.0

2.0

2.8

2.8

2.3

2.6

2.6

2.5

2.3

2.2

2.2

2.1

2.1

2.0

2.15

2.4

2 A

2.4

1.95

2.85

4.05

3.9

3.3

3

7c

3.65

3.45

3.85

4.95

6.3

6.25

5.4

4

QC

4.35

3.65

3.15

2.65

3.05

3

9C

2.15

1.8

2

9C

2.3

1.6

1.3

1.25

1.0

.95

1.8

Oct.

2 2

2.1

2.15

2.7

1.9 

1.95

2.5

2.5

2.6

2.7

2.8

2.2

2.2

2.2

2.1

2.1

2.1

2.0

2.0

2.0

2.0

2.6

2.6

2.6

2.5

2.5

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

1.7

1.2

1.3

1.05

1.8

1.45

1.0

1.1

95

.7

.6

.5

.5

.65

1.05

1.6

.95

1.2

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

Nov.

1.0

.9

.9

.9

.9

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.3

2.3

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

3.6

3.6

3.5

3.4

.25

.35

1.0

1.1

.8

.6

.5

.65

.75

.6

.5

.5

.5

.5

.5

.4

.7

1.0

.8

.6

.4

1.0

.8

.5

.35

.2

.3

.3

.3

.3

Dec.

3.2

3.2

3.2

3.2

3.2

3.2

3 9

3.2

3.2

3.2

3.2

3.2

3.2

3.2

2.3

2.3

2.3

2.3

2.3

2.2

2.2

2 2

3.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.3

.5

3.95

2.8

1.0

.5

.3

.3

.35

.4

.4

.35

.4

.4

.4

.4

.3

.3

.3

.3

.2

.2

.2

.3

.3

.3

.3
EIO GRANDE. 81 

Daily gage height, in feet, of Rio Grande near Laredo, Tex.,for 1903-4 and 1907-8.

Day.

1903. 

1...............

4...............

5...............

7...............

8.. .............

g

10...............

12...............

13. ..............

14...............

IS...............

16...............

17...............

18...............

19. ..............

20...............

21...............

22. ..............

23...............

24. ..............

25. ..............

26. ..............

27. ..............

28. ..............

29...............

30. ..............

31...............

1904. 

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

Jan.

0.3

2

.2

.2

o

.2

2

.2

.2

9

O

.25

.3

.4

.4

.4

.1

.75

.45

.45

.45

.4

.4

.4

.4

.4

.4

.4

.4

.4

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.6

1.6

1.6

1.6

1.6

1.6

1.6 -1.6

1.6

1.6

1.6

T-6

1.6

1.6

1.6

1.5

1.5

1.5

1.5 .

1.5

Feb.

0.4

.4

.3

.4

.4

.4

.4

.5

.45

.4

.4

.5

.4

.9

g

.9

.8

.8

.6

.6

.6

.6

.7

1.6

1.75

.85

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.85

1.65

1.55

1.5

1.5

1.5

1.45

1.4

1.4

1.45

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

Mar.

1.45

1.4

1.4

1.4

1.45

1.5

1.5

1.45

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

Apr.

1.3

4.0

4.2

3.3

2.45

1.95

1.55

1.5

1.4

1.35

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.55

1.5

1.3

1.35

1.5

1.75

May.

1.5

1.5

1.3

1.3

1 3*1

1.2

1 9

1.2

1.25

1.35

1

0

1.2

1.2

O QE

2.65

2.1

2.4

i ff;

1.35

1.2

1.1

1*0

1.0

.95

.9

2.0

1.85

2.25

2.75

4.7

June.

3.25

2.8

2.35

2.2

1 Q

1.9

2.05

2.5

3.55

3.4

2 Q

2.35

3.55

3 A

3.0

2.7

2.65

2.35

2.05

1.95

2.45

2.15

1 O

2.25

2.65

2.4

2.2

2.0

6.7

8.8

July.

5.3

4.1

3.65

2.85

2.4

2.3

2.15

2.05

1.9

1.8

1.65

1.7

1.65

1.65

1.5

1.35

1.3

1 o

1.3

1.3

1.25

1.2

1.25

1.4

1.85

3.5

2.5

1.9

1.75

1.55

1.55

Aug.

3.75

3.95

3.05

2.65

2.45

2.2

2.4

2.8

2.75

2.35

2.15

2.1

2.3

2.25

2.4

2.5

2.45

2.4

2.45

2.4

2.3

2.2

2.4

2.3

3.15

3.35

3.05

2.8

2.55

2.6

3.5

1.6

1.55

1.5

1.45

1.4

1.35

1.3

1.3

1.45

1.5

1.55

1.6

1.5

1.6

1.55

1.5

1.4

1.4

1.35

1.2

1.2

1.0

1.0

1.1

1.2

1.3

1.2

1.15

1.2

1.3

1.4

Sept.

2.9

2.9

3.2

3.45

3.85

3.8

3.75

3.8

3.5

9.5

6.6

6.95

3.7

2.3

2.3

2.6

2.7

3.6

2.85

2.7

2.6

2.6

2.65

2.75

2.75

2.6

3.0

3.1

4.45

3.6

1.75

1.95

1.9

1.85

2.4

2.35

2.45

7.5

7.15

8.45

7.0

9.8

15.8

15.65

20.75

24.25

25.0

18.25

8.1

7.0

8.5

9.95

14.0

12.1

10.5

7.9

8.0

7.1

6.8

5.8

Oct.

2.85

3.7

3.05

3.9

4.15

4.1

3.7

3.55

3.4

2.8

2.85

2.9

2.8

2

Q

2.8

2.8

2.8

2.6

2.6

2.55

2.5

2.5

2.5

2.45

2.4

2.45

2.5

2.95

2.6

2.4

2.4

5.1

5.2

5.35

4.9

4.7

4.7

4.3

4.0

4.0

3.9

4.05

4.2

4.4

5.4

6.9

8.95

8.35

8.4

8.35

8.7

9.05

8.35

8.05

8.05

7.7

7.45

6.9

6.4

6.05

5.55

5.25

Nov.

2.4

2.4

2.1

2.1

2.05

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

1.9

1.9

1.9

1.9

2.0

1.95

1.9

1.9

1.9

1.9

1.9

1.9

1.9

5.75

5.95

5.8

5.45

5.05

4.8

4.55

4.55

4.65

4.55

4.25

4.1

3.9

3.65

3.6

3.45

3.05

2.95

3.2

3.15

3.0

2.95

2.8

2.7

2.7

2.75

2.65

2.6

2.6

2.5

Dec.

1.9

1.9

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

-1.7

1.7

1.7

ft 5

2.4

2.4

2.4

2.35

£4

2.45

2.75

3.5

3.55

3.3

3.1

3.2

3. IS

2.9S

2.8

2.9

2.9

2.9

2.9

2.9J

2.9

2.9

2.8£

2.7J

2.6J

2.5

2.4

2.4

2.31

2.3

24440 IBR 248 10-
82 SURFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Rio Grande near Laredo, Tex.,for 1903-4 and 1907-8 Con.

Day.

1907. 

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

1908. 

1.. .............

2...............

3...............

4...............

5...............

6... .. .

7...............

8. .. ...... ..

9...............

10...............

11.

12...............

13...............

14...............

15...............

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

17...............

18...............

19...............

20.. ............

21...............

22...............

23...............

34.. ........... ..

25...............

26. ..............

27...............

28...............

29...............

3D. ..............

31...............

Jan.

3.9

3.9

3.85

3.8

3.8

3.8

3.8

3.8

3.8

3.9

3.8

3.8

3.8

3.8

3.8

3.8

3.85

3.85

3.8

3.8

3.8

3.8

3.8

3.75

3.8

3.8

3.8

3.8

3.8

4.15

4.1

4.05

4.0

4.0

4 05

4.1

4.1

4.1

4.1

3.95

3 Q

3 Q

3.8

3.8

3.8

3.8

3.7

3.7

o 7

3 7

3.7

3 7

3.8

3.7

3.6

3.5

3.4

3.2

3.2

Feb.

3.85

3.9

3.9

3.8

3.8

3.9

4.0

4.0

3.95

3 QK

3.75

3.7

3.8

3.7

3.6

3.6

3.6

3.6

3.65

3.6

3.65

3 7

3.7

3.7

3.7

3.6

3.6

3.5

3.2

3.2

3.2

3 9

3.3

3.2

3.2

q 9

q 9

3.2

3.2

o 9

0 0

3.15

3

1

0 1

3.1

3.1

3.1

3.1

3 1

3 1

3.1

3 ft

3 ft

3.0

3.0

3.0

q n

Mar.

3.5

3.4

3.4

3.45

3.4

3.4

3.45

3.4

3.4

3.3

3.3

3.3

3.3

3.3

3.2

3.3

3.2

3.3

3 9

3.2

3.2

3

1

3 fl

3.0

o ne

3.0

2

QK

9 Q*

3.05

3.1

3.05

i 1

3.1

3

1

9, 1

q ftf.

0 AC

Q ft

3

1

Q -\

1 1

3.05

3 ft

2 Q

9 Q

9 Q

2 Q

2.9

9 Q

2.9

2.8

2.8

2.7

2.7

2.7

2 7

2.7

2.65

9 fi

2.6

2.6

Apr.

3.0

3.1

3.05

3.0

Q nc

3.1

3.2

3.25

Q Q

3.3

3.3

3

0

3.2

3.25

3.3

3 OK,

Q K

3.35

3.25

3.2

3

1 f

a

i

Q ft

3 r\

3

1

3.85

4.7

9 ft

9 ft

2.6

2 A

2.6

2.6

9 ft

2.6

2.6

9 ft

2 Q

4.8

3

QC

3

KK

6.2

4.6

3 Q

3 A

* °p;

10.5

7 °.

6.75

4 OK

3

C

3.15

Q fl

3.0

3 n

3.0

May.

4.4

4.4

4.4

4.45

4.4

A qK

4.35

4.25

4.05

4.2

4.1

4.1

4.0

4.0

4.05

4.0

4.0

4.1

4.1

4.0

4.0

4.0

4.0

4.2

4.25

4.05

3 Q

3 ft

2 Q

3.2

3.35

q K

3.5

3

APL

3 A

3

qK

3

0

3

0

3

q

3

0

5.65

3 fi

3 9

3.2

3

1

3.3

3

0

3 OK

3.3

4.05

in °.

5.85

4 65

4.1

3 Q

3.9

3.85

June.

4.0

4.0

4.0

4.25

4.2

4.3

4.0

4.1

4.35

4

>IC

4.6

4.7

5 ft

4.7

4.65

5

0

5.3

5.05

5.7

n 1 5

5.25

5

0

5.35

5.35

5

QC

f; n

5.0

4

QC

5 n

o 7

0 K

3 AX

3.35

3.5

3

KK

3.6

3.65

3 ft

3 A

3 OK

3

O

Q 0

3

0

3

1

2 Q

2

QK

2.8

2.7

2.7

2 ft

2.55

2 OK

2 OK

2.5

2.5

9 t\t\

2.75

2 Q

2.6

July.

5.0

5.05

5.75

5.4

5.25

5.2

5.3

6.0

5.25

5.0

4 95

5.05

5.1

5.45

5.25

5.2

5.35

4 85

4.8

4 6

4.5

4.4

4.5

4.5

4.55 4 *,

4.5

4.4

4 f.

4 4H

2.4

2.5

2

0

2.35

2.25

2.4

7 Q

4 4£

3.75

3.45

3.4

3

K

3

0

0 QK.

2 7

2.45

2.4

2.35

2.35

2 7

2.5

2.35

3.6

5.2

3.7

3.15

4.25

Aug.

4.45

4.4

4.4

4.35

4.35

4.2

4.25

4.3

4.35

4.35

4.0

4.0

4.0

4.0

4.05

4.05

4.0

4.0

3.9

3.8

3 7

3.65

3.6

3.55

3.4

3.35

i 4

3 9

4.45

4.3

6.3

 6.05

4.95

3 7

2

QC

8.75

8.15

5.35

5.5

5.8

5.7

5 1 K.

4 85

5.85

Q 3

8.2

5 AC

5.0

4.6

4.6

4 QK

5.0

4.9

5.2

5.3

5.4

5.6

A Q

5.4

6.05

Sept.

4.2

4 15

A 0

4.8

5

7C

5.85

6.1

6.05

6.75

6.5

6.85

7 9

6.0

5.35

5.3

5.05

5.1

5.5

5.2

6.55

7.6

7 o

6.85

6.15

5.6

5.55

5

0F

5.35

5.5

5.8

fi n

7.65

8.8

8.5

8.45

8 A

7.5

5.5

4.55

4 OK

5.3

5.65

5 fie

5.35

5.0

4.8

4.35

4.3

4.1

4.1

4.0

4.0

3.95

3.8

o 7C

3.8

Oct.

5.3

5 15

4.85

4 6

4 fin

5.5

6 15

4.7

4 6

4.25

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

3 OK

3

0

3.85

3 Q

A 9

4. A.**

4.8

4.75

5.55

3

0

3 Q

o. 7

3

ftK

3.6

3

K

Q K

4.0

3.5

3.75

3.8

3.4

3 9

3 1

q n

^ 1

9. 1^

3.3

3

0

3.25

3.55

3

0

2 Q

2.85

2.8

2.8

2

7K

2.7

2.7

Nov.

i n

4.5

4.25

4 65

4.8

5.0

5.05

4

QK

4 Q

8

1 

9 55

7 9

6.65

6.15

5.6

5.4

5.0

5.0

5.0

4.85

i 4t;

4.35

4.4

4.4

4.4

4.35

4 OF;

4.4

4.4

9 fi

2.8

2.75

2.65

2.55

2

e

2

e

2 4

2 A

2.35

2.25

2.65

2.5

2.5

2.4

2.35

2.2

2.1

2.15

2.2

2.3

2.3

2.3

2.2

2.35

2.45

2.5

2.6

Dec.

4.4

4.4

4.3

5 fie

7.75

6.85

6.35

6.0

5.75

5.6

5.55

C C

c c

5.35

5.2

5.05

4.9

4.65

4.6

4 f.

i H

4 H

4.4

4.35

4.3

4.3

4.3

A. 1

4.2

4.2

4.2

9 fi

2.5

2.5

2.5

2.5

2.4

2.35

2.3

2.4

2.5

2.5

9 ^

2.5

2.45

2.7

2.7

2.65

2.6

2.6

2.65

2.9

2.8

2.6j

2-. 6

2.5

2.6

2.45

2.45

2.5

2.45

2.4
BIO GKANDE. 83

RIO CKBANDE NEAR ROMA, TEX.

The station was established in 1900 by the International Boundary 

Commission. It is near Roma, Tex., 775 miles by river below El 

Paso.

The right bank is alluvial deposit and overflows in high water 

for a width of 250 feet. The overflow section is thickly covered 

with mesquite brush. The left bank is of hard material and does 

not overflow.

The river bed is constantly shifting and frequent discharge measurements are necessary to determine closely the daily discharge. 

The section is subject to overflow at high water.

The highest recorded flood, September 16, 1904, marked 26 feet 

on the gage.

The observations at this station have been made under the 

direction of the Mexican section of the International Boundary 

Commission.

Discharge measurements an<J gage heights for the years 1900 to 

1904, which have not hitherto been published by the United States 

Geological Survey, are given herewith, together with those for 1907-8.

Discharge measurements of Rio Grcmde near Roma, Tex., in 1900. 

[By S. P. Vale.]

Date.

September 22.......

September 26.......

September 29.......

October4. .........

October 19.........

October 24. ........

Area of 

section.

Sq.ft. 

3,359

2,059

2,645

2,330

6,624

3,055

2,650

2,576

2,493

2,377

2,524

2,484

2,816

1,994

1,936

Gage 

height.

Feet.. 

6.45

4.6

5.6

4.95

12.9

5.85

6.2

5.8

5.1

5.0

5.7

5.4

6.3

4.9

4 7

Discharge.

Sec.-ft. 

16,489

6,661

8,914

7,209

43,626

12,443

10,026

9,168

7,515

7,177

9,744

8,OW

12,021

6,554

6 

' 040

Date. Area of 

section.

Sq.ft. 

1,813

1,811

1,815

1,829

1,812

1,714

1,680

1,609

1,603

1,699

1,727

1,592

1,531

1,495

Gage 

height.

Feet. 

4.5

4.4

4.4

4.4

4.4

4.2

4.1

4.1

4.1

4.1

4.1

4.0

3.9

3.9

Discharge.

Sec.-ft. 

5,262

5,097

5,101

5,100

5,128

4,532

3,951

4,015

4,032

3,992

4,174

3,895

3,588

3,420

NOTE. Discharge measurements for 1900 complete so far as Mexican records exist.
84 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Grande near Roma, Tex., in 1901. 

[By S. P. Vale.]

. 1

Date.

March 16.. .........

March 24...........

April 10............

April 14

Aprill?............

April 20............

April 23...... ......

April 27. ...........

April 29............

May3..............

TWaTT Q

May 18. ............

May 22. ............

May 30. ............

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

Area of 

section.

Sq.ft. 

1,568

1 ftf>3

1,471

1 J.^3

1,460

1 tifil

1 f^9

1,480

1,556

1,482

1,380

1,510

1,349

1,314

1 184

1,052

1,016

1 197

1,087

1,159

1,078

1,048

1,059

2,599

1 <W9

1,191

1,270

2,382

1,422

1,513

1,532

1,479

1,204

2,518

1,220

Gage 

height.

Feet. 

4.0

3 Q

3 Q

3.8

3 7

3.8

4.0

3 9

^ Q

3 Q

3.8

3.7

3.7

3.6

3.5

3.8

3.6

3.5

3 A

3.2

3.1

3

n

2.8

9 Q

2.8

2.7

9 fi

2.6

2

C

5.8

5 OK

3.8

3.6

6.6

3.8

4.2

4.0

4 1 1;

4.0

4.0

3.3

<; Q

3.2

Discharge.

Sec.-ft.

3

Q'M

3,280

3-011

q nfi9

3

iqi

2 Qft1

2 989

2, 886

2,722

2 finn

2,572

3,080

2,620

2 J.1 3

2 1 ^fl

2,098

1 908

1,974

2 062

2,011

1,729

11 080

8,778

3,348

. 2,807

3 H97

10,206

3,479

3,734

3,861

3,010

2,290

10 044

2,275

Date.

July 10. ............

July 14.............

July 18. ............

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

July 26. ............

July 30. ............

August 29..........

October 24 .........

Area of 

section.

Sq.ft. 

981

968

854

846

1,122

1,447

1 f^7Q

1,873

1,925

1,766

1,408

1,360

1,552

1,264

1,394

2,884

1,268

1,546

1,810

1,152

1,402

1,270

1 779

1 490

1,560

1,658

1,372

1,946

1,441

1,448

1,326

1,242

1 164

1,153

Gage 

height.

Feet. 

2.9

2.7

2.8

3.3

4.0

4.2

4.6

4.7

4.6

3

n

4.4

4.3

3.5

3.7

o qe

7.6

4.1

A 1 R

c 9c

4.55

3.8

^ fi

3.6

3.8

3.5

3.5

4.0

4

flE

3.9

4.2

4.2

3.7

5.0

3.8

3.7

3.55

3.4

3.25 ^ <>

Discharge.

Sec.-ft. 

1,828

1,556

1,435

1,521 f> Q4g

3,095

3,707

4,048

3,916

3,513

2

cq9

3,576

2 734

1J. qqo

3,225

4,186

8,075

3,520

2 919

7,834

0 ,J.JJ

2 Q77

5

OQO

4 481

4,602

3,570

6,564

3

1 JO

3,044

9 739

2,524

9 439

9 497

2,058
EIO GRANDE. 85

Discharge measurements of Rio Grande near Roma, Tex., in 1902. 

[By S. P. Vale and A. Argandar.]

 Date.

March 19...........

March 23... ........

March 31...........

April 4.. ...........

April9.. ...........

April 13. ...........

April 15... .........

April 22... .........

April 27............

May 10... ..........

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

May 21. ............

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

May 31..... ........

Do............

June 16............

July 5... ...........

Area of 

section.

Sq.ft. 

1,178

1,165

1,269

1,340

1,294

1,292

1,260

1,259

1,274

1,292

1,061

978

1,098

941

912

879

832

707

716

701

694

659

1,758

1,265

913

3,592

1,350

801

5,325

854

785

. 675

890

671

671

608

723

837

760

1,257

height.

Feet. 

t 1

3.1

3.4

3.5

3.2

3.0

9 g

2.9

3.0

2.95

2.9

2.8

2.7

2.6

2.3

2.2

2.1

2.0

2.1

1.9

1.8

1.9

1.8

4.3

2 8

2.0

1.8

8.4

3.95

2.5

8.5

' 3.2

2.9

2.5

2.3

2.3

2.0

2.5

2.8

2.4

4.0

Discharge.

Sec.-ft. 

2,190

2,156

2,401

2,540

2,218

2,095

1,922

2,100

2,139

2,071

1,951

1,820

1,888

1,743

1,565 1 ^no

1,370

1,304

1,385

1,324

1,308

1,339

1,243

o4,932

1,941

1,380

1,162

019,833

4,378

1,573

021,184

2,283

1,764

1,411

1 OR9

1,339

1,453

1,118

1,459

1,776

1,429

3,717

Date.

July 9..............

July 12... ..........

July 17... ..........

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

July 26.............

July 29...... .......

On+nVior *?fi

Area of 

section.

Sq.ft.

704

707

1,817

1,344

1,444

4,111

2,196

1,811

1,507

1,506

1,504

2,205

2,042

2,651

2,256

4,381

2,912

3,178

2,443

1,452

2,916

1,568

1,338

2,671

3,497

1,495

1,146

993

1,408

1,335

1,271

1,131

1,432

1,253

2,324

1,486

1,208

1,212

1,129

1,107

1,019

&,

Feet. 

2.4

2,1

5.4

3.45

3.85

10.1

5.8

4.9 4 n

4.0

4.0

4.7

4.8

6.2

5.4

8.75

10.1

7.0

7.5

5.8

4.2

7.75

4.4

3.6

7.0

9.1

4.2

3.3

3.1

3.8

3.3

2.9

2.6

3.8

3.1

5.8

4.3

2.9

2.9

2.8

2.8

2.8

Discharge.

Sec.-ft. 

1,408

1,231

a 7, 113

3,681

3,831

629,847

9,511

6,667

3,823

3,198

3,301

6,034

5,745

10,788

9,108

21,363

28,188

14, 155

15,435

7,390

3,995

15,055

4,746

2,512

13, 161

21. 161

4,394

2,666

2,280

3,943

3,679

3,379

2,700

4,125

3,379

7,135

4,431

2,338

2,394

2,084

1,908

1,642

a Measurements April 15, May 6 and 21, July 17,1902, made by floats.

& Measurement July 29,1902, made by floats. Maximum gage height 11.5 feet.

c Extra measurement on August 16 and measurement on September 3,1902, made by E. Zayas.
86 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Grande near Roma, Tex., in 1903. 

[By A. Argandar and H. P. Guerra.]

Date.

May 5. .............

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

May 15.. ...........

May 20. ............

May 23. ............

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

June 26......

July 3. .............

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

July 10. ............

July 14. .......

July 18............

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

Area of 

section.

Sq.ft. 

992

982

1 008

989

967

Q77

944 O7C

no 7

1,424

1,316

1,282

1,554

1,279

1,363

2,598

2,442

1,481

1,666

1,667

1,834

1,415

5,849

4,195

3,516

3,658

3,517

4,776

3,657

2,824

2,435

Gage 

height.

Feet. 

2.7

2.7

3

f»

2.9

2.9

2 7

2.7

2.7

9 8

2.6

2.4

2 7

3.2

3 f\

^ 1

3.2

2.7

2.9

5.5

5.4

3.4

3.7

3.85

4.1

3.2

11.6

8.4

7.1

6.8

5.8

8.6

5

9

5.9

5.1

4.1

Discharge.

Sec.-ft.

1,410

1,499

1,476

1,426

1,446

1,450

1 <;IQ

1,370

1 931

3,658

3

eno

3,481

3,631

13,121

10,750

3,915

4,723

4,109

6,293

3,198

33,972

19,099

12,600

13,329

10,263

27,358

10,966

12,415

9,799

6,915

Date.

October 13 .........

October 20. ........

October 24 .........

October 31.........

December 18.......

Area of 

section.

Vm

1,835

1,235

1,256

1,685

1,656

1,623

2,170

2,645

3,520

1,757

1,684

1,763

2,358

3,550

2,667

2,435

1,947

1,778

1,683

1,661

1,468

1,429

1,313

1,299

1,311

1,284

1,252

1,250

1,242

1,143

1,135

1,131

1,172

1,182

Gage 

height.

Feet. 

5.3

3.3

3.4

3.2

4.3

4.0

3.5

4.2

5.6

7.55

3.8

3.7

3.5

3.9

5.9

3.8

3.6

2.7

2.5

2.4

2.3

2.0

1.9

1.7

1.7

1.7

1.6

1.5

1.5

1.5

1.4

1.4

1.4

1.4

1.4

Discharge.

Sec.-ft. 

10,104

4,124

4,164

3,688

5,432

5,077

3,766

4,964

8,077

15, 731

5,606

5,304

4,665

4,881

11,151

6,704

5,942

4,189

3,901

3,808

3,601

3,108

3,006

2,650

2,691

2,648

2,605

2,568

2,593

2,586

2,398

2,384

2,488

2,352

2,291

NOTE. No discharge measurements made in March and April, 1903.
RIO GRANDE. 87

Discharge measurements of Rio Grande near Roma, Tex., in 1904. 

[By H. P. Guerra.]

Date.

January 20.........

February 23........

Aprils.............

April 12.. ..........

April 15. ...........

April 19. ...........

April 22... .........

April 26............

May3..............

May 9... ...........

May 13.. ...........

May 16.. ...........

May20..... ........

May 24.. ...........

May 27.............

Tnnn 9^1

Area of 

section.

Sq.ft. 

1,173

1,091

1,106

1,093

1,094

1,066

1,058

989

983

967

1,104

925

945

917

908

845

829

827

782

803

803

2,217

1 460

1,059

911

765

843

724

809

2,849

1,002

1,445

963

834

2,407

3 791

1,937

1,938

1 S 518

1,456

1,375

Gage 

height.

Feet. 

1.4

1.4

1.4

1.5

1.4

1.4

1.3

1.5

1.5

1.4

1.9

1.4

1.5

1.4

1 ^

1.2

1.1

1.0

1.0

g

3 Q

9 3

1.4

1.2

1.0

1.2

.9

1.2

5.65

1.5

6.95

2.8

1.8

1.6

5.0

8.6

41

A Q

3.3

3.2

2.9

Discharge.

Sec.-ft. 

2,263

2,081

2,137

2

OQO

2,269

2,211

2 171

2,020

2,016

1,915

2,201

1,939

1,972

1 931

1,839

1,626

1,564

1,574

1 483

1,678

1 461

7,767

2

KCO

1,581

1,397

1,243

1,470

1,171

1 ^'>Q

13,461

1 ^flfl

14 058

2,851

1,428

1,264

8 959

23,287

5,855

5,969

3,569

3,266

2,685

Date.

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

July 6...... ........

July 9.. ............

July 13.. ...........

July 18.. ...........

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

July 26. ............

SeDtember 6

Area of 

section.

Sq.ft. 

4,231

1,393

1,262

1,104

917

871

1,232

1,129

1,037

968

1,026

1,018

929

872

1,502

3,339

6,695

6,763

7,445

5,450

5,045

4,779

3,892

4,496

5,495

. 5,649 5, on

, 3,830

t t M,062

- '3,759

2,969

2,786

2,606

2,531

2,447

2,167

3,017

3,215

3,160

2,655

2,620

2,866

Gage 

height.

Feet. 

9 7

3.3

3.2

2.6

2.0

1.9

2.9

2.4

2.4

1.9

2.1

2.2

1.7

1.5

^ n

7.6

15.8

140

15.3

10 7

9.1

7.3

6.2

fi Q

9.4

9 7

8.4

7.1

7.4

6.3

5.0

47

45

4.6

41

45

4.4

46

4.8

4.5

44

Discharge.

Sec.-ft. 

24,299

4,186

2,897

2,285

1,651

1,517

2,878

1,736

1,828

1,665

1,850

2,058

l;655

1,'S86

3,492

18,414

46,893

29,100

34,869

23,203

20,304

18,912

15,235

17,081

26,139

28,661

22,373

17,163

18,132

12,944

11,136

10,159

8,561

7,743

7,797

6,716

7,702

7,338

8,036

9,063

8,434

7,508
88 SURFACE WATEB SUPPLY, 1907-8.

Discharge measurements of Rio Grande near Roma, Tex., in 1907. 

[By EL P. Guerra.J

Date.

March 2............

March 12. ..........

March 26...........

April 2. ............

Aprils.............

April 12............

April 15............

April 20. ...........

April 29... .........

May3..............

May7........ ......

May 11.. ...........

May 16.............

May 25.............

May 27.. ...........

May 30... ..........

June 19. ...........

June 28............

July 2... ...........

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

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

Area of 

section.

Sq.ft. 

2,349

2,181

2,126

2,090

2,216

2,187

2,319

2,063

1,976

1,913

1,832

1,701

1,588

1,540

1,456

1,537

1,278

1,744

1,541

1,507

1,412

2,407

2,883

2,097

2,030

2,425

5,390

2,631

1,932

2,023

2,166

2,671

2,503

2,355

2,300

2,368

4,948

4,051

Gage 

height.

Feet. 

5.4

5.0

4. 9

4.8

5.1

i n

5.3

4.8

4.6

4.4

4.2

4 0

3.7

3.5

3.3

2.9

2.4

3.0

2.9

2.85

2.7

4.7

5.1

4.5

4.1

4.3

10.6

4.5

4.0

4.7

5.0

5.9

5.7

5.6

5.4

5.5

11.3

9.0

Discharge.

Sec.-ft. 

5,605

4,827

4,550

4,304

4,961

4 956

5,648

4,525

4,165

3,820

3,107

3,000

2,998

2,648

2,598

2,299

3,102

2,611

2,568

2,358

5,056

5,609

5,019

3,807

4,160

4,991

3 QO4

4,193

4,560

6,511

5,863

5,765

5,456

5,592

21,054

12,315

Date.

July 12.. ...........

July 17... ..........

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

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

July 29.. ...........

October 11 .........

Area of 

section.

Sq.ft. 

2,141

2,663

2,447

2,037

2,066

2,184

2,595

1,983

1,719

2,414

2,323

2,856

2,892

2,666

3,380

2,741

2,619

3,350

2,174

2,315

2,084

2,180

2,405

2,182

2,736

3,796

2,851

2,505

2,576

2,449

2,459

3,487

2,872

2,620

2,254

2,243

2,236

Gage 

height.

Feet. 

5.3

6.3

5.6

5.2

4.9

5.0

5.3

3.8

3.1

5.2

4.9

6.2

6.1

7.1

5.5

7.3

5.9

5.7

7.3

5.0

4.7

4.3

5.0

5.5

5.0

5.9

8.3

6.5

5.6

5.3

5.2

5.2

8.0

6.1

5.8

5.4

5.0

4.9

Discharge.

Sec.-ft. 

5,173

7,357

5,725

4,971

4,506

4,894

5,828

4,429

3,705

5,533

5,007

11,201

10,279

13,467

7,877

15,489

9,256

8,231

13,883

4,931

4,048

3,304

4,912

5,812

4,943

6,841

17,336

10,588

6,071

5,738

5,354

5,479

15,328

10,305

6,240

5,347

5,065

4,888
BIO GRANDE. 89

Discharge measurements of Rio. Grande near Roma, Tex., in 1908. 

[By H. P. Guerra.]

Date.

February 1. .......

February 23. ......

March 2 ...........

March 6. ...........

March 22...........

March 30.. .........

April2...... .......

April?.............

April 11............

April 13... .........

Apriir?..... ...... .

April 21... .........

April 24............

April 29..... .......

May 2..............

Mmr ft

May 15.............

TWa-w 1Q

May 23.... .........

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

May 30.... .........

June 29. ...........

July 2... ...........

Area of 

section.

Sq.ft. 

2,330

2,334

2,166

2,011

1,925

1,867

1,727

1,879

1,811

1,788

1,755

1,730

1,736

1,678

1,674

1,592

1,493

1,419

1,423

1,395

1,299

1,191

1,147

1,146

2,077

3,419

2,536

5,994

2,594

1,208

1 148

1 1 4^

1,326

4,862

2,685

2,350

4,654

2,130

2,148

1,593

2,146

1,671

1,490

1,424

1,393

1,886

1,697

Gage 

height.

Feet. 

5.0

5.0

4.8

4.6

4.3

3.7

4.2

3 7

3.6

3.4

3.3

3.3

3.2

3.2

2.8

9 fi

2.5

2.3

2.3

2.3

2.2

2.0

2.0

5.2

7.2

5.2

13.0

6.0

3.7

3.3

3.3

11.8

4

C

3.7

 10.8

4.3

4.4

3.9

4.4

3.5

2.9

2.7

2.6

' 3.7

3.2

Discharge.

Sec.-fi. 

5,303

5,336

4,724

4,137

3,758

3,670

3,203

3,568

3,292

3,202

3,073

3,019

3,037

3,033

3,020

2,791

2,524

2,380

2,372

2,220

2,041

1,766

1,723

1,769

5,074

14,439

7,347

31,249

8,185

2,761

2,470

20,812

4,074

3,253

20,616

3 144.

3,217

2,030

3,160

2,505

2,223

2,096

2,000

2,732

2,364

Date.

Julv7... ..... ....--

July 10.. ...........

July 14.............

July 18.............

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

July 26.... .........

July 30.............

September 26... ..

October 10.........

October 18.........

October 23.........

October 26........

November 22. .....

Area of 

section.

 Sq.ft. 

2,408

2,901

2,616

1,675

1,643

2,000

2,896

2,976

4,646

3,413

3,585

3,420

3,333

2,991

2,928

3,012

4,705

3,987

3,415

3,293

2,519

2,212

2,126

2,003

1,957

2,227

1,906

1,696

4,663

1,820

1,788

1,716

1,561

1,507

2,050

1,542

1,551

1,451

1,492

1,469

1,472

1,462

1,383

1,395

1,361

1,369

Gage 

height.

Feet. 

5.0

6.5

6.0

3.0

2.9

3.7

5.9

6.0

10.0

7.2

8.2

7.6

7.1

6.3

6.0

6.4

11.0

8.6

7.3

7.0

5.5

4.8

4.4

4.0

3.9

4.8

3.7

3.3

11.0

3.5

3.4

3.3

3.0

3.0

4.3

3.0

3.0

3.0

2.8

2.9

2.9

2.9

2.9

2J8

2:8

2.8

2.8

Discharge.

Sec.-ft. 

4,795

9,761

7,878

2,186

2,130

2,894

8,274

8,256

19,689

14,417

16,987

15,818

13,796

10,067

8,535

10,207

21,033

18,717

15,070

13,443

7,085

4,820

3,493

3,205

3,114

4,885

3,007

2,540

21,092

2,920

2,880

2,760

2,428

2,209

3,372

2,463

2,449

2,389

2,029

2,157

2,132

2,151

2,128

2,071

2,066

2,065

2,063

Daily gage height, in feet, of Rio Grande near Roma, Tex., from 1900 to 1904, 1907,

and 1908.

Day.

1900.o 

1......... ......

2...............

3..;............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12. ..............

13...............

14...............

15...............

Jan. Feb. Mar. Apr. May. June. July. Aug.

7.8

7.6

Sept.

5.4

5.2

6.05

5.6

5.5

5.8

5.9

7.65

6.25

5.35

4.85

4.75

4.6

4.7

4.95

Oct.

6.4

7.16

6.6

6.2

6.35

6.25

6..05

5.8

5.65

5.65

5.4

5.4

5.3

5.15

5.1

Nov.

4.9

5.0

4.85

4.85

5.05

4.75

4.7

4.6

4.6

4.55

4.6-

4.55

4.5

4.45

4.4

Dec.

4.2

4.1

4.1

4.15

4.1

4.1

4.15

4.1

4.1

4.1

4.1

4.2

4.15

4.2

4.16

Gage heights for 1900 complete s6 far as Mexican records exist.
90 SURFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Rio Grande near Roma, Tex., from 1900 to 1904, 1907,

and 1908 Continued.

Day.

1900. 

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24. ..............

25...............

26. ..............

27...............

28...............

29...............

30...............

31...............

1901. 

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

1902. 

1...............

2...............

3...............

4.. .............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

IS...............

16...............

17...............

18...............

19... ...........

20...............

Jan.

3.9

3.95

4.05

4.0

4.05

4.05

3

QC

3.95

3.9

3.9

3.9

4.0

4.0

3.85

3.8

3.8

3.85

3.9

3.75

3.8

3.8

3.8

3.8

3.9

3.95

4.0

4.1

4.05

4.0

3.95 

3.9

3.2

3.15

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.25

3.4

3.5

3.55

3.75

3.5

3.4

3.36

3.3

Feb.

3.9

3.9

3.9

3.9

3.8

3.9 

3.9

3.8

3.8

3.8

3.8

3.8

3.8

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.65

3.65

3.6

3.6

3.6

3.5

3.5

3.5

.......

2.9

2.9

2.9

2.9

2.9

2.9

2.9

2.9

3.0

3.0

3.0

3.0

2.95

2.9

2 9

2.9

2.9

2.9

2.9

2.85

Mar.

3.55

3.6

3.85

3.8

3.8

3.7

3.6

3.6

3.55

3.5

3.5

3.5

3.5

3.45

3.4

3.4

3.3

3.3

3.2

3.2

3.2

3.15

3.1

3.1

3.05

3.0

3.0

3.0

3.0 

3.0

2.75

2.65

2.55

2.4

2.4

2.35

2.3

2.3

2.3

2.3

2.25

2.2

2.2

2.15

2.15

2.15

2.1

2.1

2.1

Apr.

3.0

2.9

2.9

2.8

2.8

2.7

9 7

2.8

2.8

2.8

2.9

2 9

2.9

2.9

2.9

2.8

2.75

2.7

2.65

2.6

2.6

2.6

2.6

2.6

2.55

2.5

2.55

2.6

1.95

1.95

1.85

1.85

1.9

1.9

1.85

1.8

1.9

1.9

1.8

1.8

1.8

2 25

3.3

3.65

3.5

4.25

4.6

3.4

May.

4.05

6.7

5.7

3.9

3.8

3

0

5.65

6.0

4.7

4.2

4.1

3.85

3.7

3.7

1 7

3.6

4.3

4.25

3.95

3.6

3.65

3.7

- 3.95

6.6

4.65

3.95

3.75 

4.0

1.85

1.8

1.8

1 7<?

1.85

5.9

7 11!

5.6

4.2

3.85

3.65

3.3

3.05

2.9

2.9

2.8

2.7

2.6

C.5

4.8

June.

4.0

3.9

4.0

4.35

4.75

4.05 

4.0

4.0

4.0

4.0

4.05

4.15

4.2

4.15

4.0

3.95

3.95

4.0

4.1

4.1

4.1

3.85

3.6

3.35

3.25

3.15

3.2

4.85

6.55

5.3

2.65

2.6

2.5

2.95

3.05

3.0

2.8

2.55

2.45

2.35

2.3

2.25

2.05

2.0

2.0

2.0

2.1

2.45

2.65

2.55

July.

4.2

3.55

3.35

3.25

3.05

2.9 

2.9

2.9

3.35

3.25

2.95

2.95

3.0

2.9

2.8

2.8

2.75

2.7

2.7

3.05

2.85

3.4

3.8

3.6

3.3

3.35

3.35

3.15

3.4

3.9 

3.95

2.25

2.35

2.25

2.15

4.0

3.6

3.15

2.65

2.35

2.15

2.1

2.05

2.05

2.3

2.65

3.7

5.25

4.45

4.0

3.65

Aug.

7.1

6.85

6.7

6.4

6.35

6.1

5.9

6.55

6.6

6.4

6.15

5.7

5.3

5.3

5.75

5.5

4.15

4.3

4.25

4.8

4.75

4.6 

4.6

4.8

4.75

4.65

4.75

4.8

4.8

4.7

4.65

4:45

4.25

3.9 I

4.0

3.9

3.75

3.55

3.45

3.95

4.5

4.7

4.55

4.45

4.35

4.1 

3.75

7.3

6.85

6.25

5.75

5.5

5.25

5.05

4.80

4.35

4.3

4.6

4.15

3.95

3.8

4.0

3.95

5.85

5.3

4.8

4.85

Sept.

5.45

5.6

5.35

5.25

5.2

5.1

4.95

4.9

8.95

12.95

12.9

8.45

6.75

5.85

6.2

3.55

3.35

5.2

5.2

4.55

5.0 

3.8

3.5

3.5

3.35

7.25

5.2

4.85

4.45

4.0

4.15

4.85

4.8

4.65

4.2

3.95

3.95

4.75

5.1

5.0

5.35

4.85

4.6

4.35

4.2

4.85

5.35

6.3

7.15

6.25

5.75

6.1

7.0

7.7

7.6

9.3

10.5

9.7

8.7

8.15

7.75

6.85

6.3

6.55

6.5

Oct.

5.1

5.0

4.9

5.55

5.7

5.5

5.7

6.3

5.7

5.35

5.35

5.6

5.55

5.35

6.3

5.3

3.9

3.8

3.7

3.6

3.7

3.65 

3.6

3.65

3.85

3.75

3.6

4.05

5.05

4.8

3.9

3.65

3.55

3.45

3.45

3.5

3.5

5.15

4.05

3.55

4.25

4.0

4.0

4.0

3.95

4.25 

5.3

5.1

4.9

7.15

6.7

5.0

4.5

4.45

4.4

4.4

4.35

3.75

3.75

3.7

6.05

7.7

8.65

6.65

5.45

4.4

4.3

Nov.

4.4

4.4

4.4

4.45

4.45

4.4

4.4

4.35

4.3

4.25

4.2

4.2

4.2

4.1

4.1

5.3

4.75

4.6

4.45

4.3

4.1 

4.0

4.0

4.0

4.0

3.9

3.95

4.15

4.25

4.2

4.2

4.2

4.2

4.2

4.2

4.15

4.05

3.95

3.85

3.75

3.65

3.6

4.4

4.8

3.9

3.0

3.05

3.4

3.6

3.0

3.0

2.8

2.9

3.35

3.7

3.35

3.4

3.5

3.7

3.0

2.95

2.9

2.9

2.95

2.65

Dec.

4.15

4.1

4.1

4.1

4.05

4.0

4.0

4.0

3.9

3.9

3.9

3.95

4.0

4.0

4.0

3.95

3.55

3.6

3.6

3.65

3.7

3.75 

3.75

3.8

3.75

3.7

3.G5

3.6

3.55

3.5

3.5

3.45

3.5

3.5

3.45

3.4

3.4

3.4

3.4

3.3

3.3

3.25

3.2

3.2

3.2

3.2 

3.2

4.4

4.2T

6.6

5.5

4.55

3.85

3.55

4.0

3.8

3.0

5.0

3.55

2.9

2.9

3.1

2.95

2.9

2.9

2.9

2.9
EIO GEANDE. 91

Dmly gage height, in feet, of Rio Grande near Roma, Tex., from 1900 to 1904, 1907,

and 1908 -Continued.

Day.

1902. 

21...............

22...............

23...............

24...............

25. ..............

26...............

27.........:.....

28. ..............

29...............

30...............

31...............

1903. 

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15........... ...

16...............

17........... ...

18...............

19...............

20...............

21........... .

22.........

23..... ..... ...

24........... ...

26...............

26...............

27...............

28

29...............

30...............

31...............

1904. 

1...............

2...............

3.. .............

4...............

5. ..............

6...............

7...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

Jan.

3.25

3.2

3.15

3.1

3.05

3.0

3.0

2.9

2.9

2.9

2.9

2.8

2.8

2.75

2.7

2.7

2.7

2.75

2.75

2.7

2.7

2.7

2.65

2.75

2.8

2.9

3.0

3.0

2.85

2.8

2.75

2.9

3.0

2.9

2.9

2.9

2.75

2.7

2.7

2.7

2.7

2.7

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.45

1.5

1.4

1.4

1.4

1.4

1.5

1.5

1.5

1.4

1.4

1.4

1.3

1.3

1.3

Feb.

2.8

2.8

2.7

2.6

2.6

2.7

2.65

2.6

2.65

2.7

2.65

2.65

2.65

2.7

2.75

2.8

2.7

2.7

2.65

2.6

2.6

2.5

2.45

2.4

2.4

3.45

3.2

3.2

3.1

3.0

3.1

3.0

3.0

3.0

3.0

,3.15

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.45

1.5

1.7

2.05

1.6

1.5

1.6

1.75

1.6

1.5

1.4

1.45

1.5

1.5

1.4

1.4

1.5

Mar.

2.05

2.05

2.05

2.1

2.0

2.1

2.05 2.0-

2.0

1.9

1.9

1.4

1.4

1.3

1.3

1.3

1.3

1.3

1.2

1.1

1.1

1.1

1.1

1.0

1.0

1.1

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.9

Apr.

3.0

2.85

2.55

2.4

2.25

2.15

2.0

2.0

2.0

1.9

1.9

1.8

1.8

1.8

1.9

1..75

1.7

1.6

1.6

1.55

1.5

1.6

1.95

2.15

1.85

3.3

3.1

.95

1.0

4.3

4.6

4.15

3.05

2.75

2.4

2.0

1.75

1.55

1.4

1.3

1.25

1.2

1.1

1.1

1.0

1.0

.9

.9

1.2

1.05

1.0

.9

May.'

7.95

4.95

3.85

3.4

3.25

3.2

3.15

3.0

2.9

2.9

2.9

5.6

4.45

3.25

3.35

3.35

3.55

2.85

2.7

2.8

3.25

3.65

3.15

3.5

5.25

5.25

3.9

3.35

4.25

6.35

5.1

4.05

3.5

3.4

4.15

4.15

3.7

3.6

3.6

3.65

3.6

A f\c

.9

1.55

1.6

7.0

4.45

2.65

1.8

1.8

4.8

3.0

1.9

1.75

2.6

4.6

4.5

7.25

6.5

5.45

3.8

2.85

2.65

2.4

2.05

1.85

1.8

June.

2.45

2.5

3.05

2.75

2.9

3.05

3.0

2.6

2.35

2.2

3.6

3.95

4.0

5.25

3.85

3.65

3.65

3.65

3.2

3.55

4.35

4.95

10.9

15.75

18.5

19.25

17.0

11.4

8.3

8.2

7.6

7.3

7.05

6.95

6.8

6.8

6.95

6.75

6.55

6.45

5.25

4.05

3.55

3.35

3.2

7.87

7.05

6.8

4.2

4.35

4.35

3.9

3.2

4.4

4.1

4.0

3.45

3.4

3.4

3.2

3.05

3.5

3.15

2.9

2.6

July.

3.5

3.5

3.5

3.5

3.8

3.95

5.55

9.95

9.5

7.6

7.5

6.35

6.0

5.75

5.45

6.1

8.6

8.65

6.45

5.45

5.35

5.6

5.8

5.9

5.85

5.6

5.25

5.0

4.8

4.3

4.2

3.95

3.7

3.5

3-. 4

3.35

3.15

5.05

6.9

4.9

10.9

9.0

6.95

4.75

4.3

3.65

3.35

3.2

3.2

3.1

3.0

2.85

2.7

2.6

2.6

2.45

2.25

2.05

2.0

1.9

1.9

1.95

1.9

1.9

2.0

3.35

Aug.

4.9

4.65

4.8

4.7

4.5

4.75

4.65

5.05

4.85

3.65

4.3

12.65

9.4

7.05

5.1

4.3

3.8

3.55

3.3

3.8

3.7

3.7

4.25

3.6

3.3

3.2

4.5

4.8

4.15

3.95

4.15

4.0

3.45

3.3

3.25

3.3

4.2

4.35

4.1

3.75

3.4

3.25

2.4

2.7

2.65

2.4

2.2

2.1

2.0

1.9

2.0

2.1

2.3

2.65

2.55

2.4

2.25

2.3

2.0

1.95

1.75

1.65

1.65

1.5

1.5

1.6

1.7

Sept.

6.65

5.6

5.1

5.1

5.6

4.85

4.6

4.45

4.3

4.75

4.25

5.0

4.05

3.55

3.55

5.3

5.5

5.3

5.3

5.0

12.85

8.85

5.8

4.65

3.75'

3.45,

3.25-

3.35

5.0 ,

4.25

3.9

3.95

3.85

3.65

3.5

3.7

3.55

3.7

4.85

6.25

1.95

2.2

2.75

2.85

2.7

2.86

3.6

7.2

10.7

9.85

11.15

9.9

16.0

17.5

22.65

25.75

25.7

24.75

18.25

14.4

13.65

13.4

14.85

15.1

14.1

Oct.

4.1

3.7

3.6

3.45

3.4

3.3

3.2

3.15

3.1

3.05

3.0

5.25

4.7

4.7

5.15

5.75

5.5

5.9

5.7

5.9

4.6

4.15

3.95

3.8

3.7

3.5

3.45

3.45

2.85

2.7

2.65

2.6

2.6

2.5

2.45

2.4

2.4

2.35

3.6

2.8

2.4

2.25

8.75

8.1

8.65

8.15

7.65

7.2

7.25

6.6

6.3

6.1

6.15

6.1

6.2

6.9

7.3

8.8

9.95

9.5

9.75

9.7

10.36

10.65

9.5

9.4

9.35

Nov.

2.85

2.85

4.4

3.8

3.5

3.0

3.15

3.0

3.1

3.6

2.2

1.95

2.0

1.95

1.9

1.9

1.8

1.9

1.8

1.7

1.7

1.7

1.7

1.7

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.55

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

7.3

8.3

7.6

7.4

7.05

6.7

6.45

6.5

6.3

6.2

6.1

5.85

5.6

5.4

5.3

5.2

5.15

5.0

6.0

4.9

4.8

4.7

4.7

4.6

4.5

Dec.

2.85

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2

0

2

O

2.8

1.5

1.5

1.5

1.5

1.5

1.5

1.4

1.4

.1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4 -1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

4.2

41

4.1

4.1

4.1

4.35

4.05

4.35

4.5

4.85

4.85

4.6

4.45

4.3

4.3

4.6

4.2

4.2

4.3

4.4

4.7

4.4

4.4

4.4

4.25
92 SURFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Rio Grande near Roma, Tex., from 1900 to 1904, 1907,

and 1908 Continued.

Day.

1904. 

26... ._.........

27.... ;... .......

28... J .......

29. .. _!;.........

so.. ..; ........

31... .!"... .......

1W7.

l...-1-.-i.. ......

2...............

3. ..............

4...............

5...............

6...............

7...............

9...............

10...............

11...............

12...............

13...............

14...............

15..:............

16...............

17...............

18...............

19...............

20. ..............

21...............

22...............

23...............

24...............

25...............

26...............

27.. .............

28...............

29...............

30...............

31...............

1908. 

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

Jan.

1.4

1.4

1.4

1.4

1.4

1.4

5.4

5.4

5.3

5.15

5.1

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

4.9

5.0

5.0

5.0

5.0

4.9

4.9

4.95 i n

5.0

5.0

i n

5.05

4.9

A Q

4.8

A Q

4 Q

F; n

5.05

4.95

4.9

A Q

4.8

4.8

4.8

4.7

4.65

4.6

4.6

4 f\

4.5

4.4

4.4

4.4

4.4

4.4

4 t

4.3

4.3

4.2 .

4.2

4.1

4.1

3.8

3.7

4.0

Feb.

1.5

1.4

1.4

1.4

4.9

4.95

5.2

5.3

5.0

5.0

5.1

5.0

4 9

4.8

4.6

4.4

4.4

4.4

4.4

4 4

4 4

4.4

4.4

4 4

4.4

4.4

4 4

4.4

4.2

4.0

3.8

S 7

3.65

3.6

i fi

3 R

3.5

s fi

3.45

3.4

q A

3 A

q q

3.3

3 q

3.3

3 q

3 q

3.3

3 q

3.3

3.3

3.2

3.1

3.0

s 1

3.1

.......

Mar.

0.9

1.0

.9

.9

.9

.9

4.25

4.2

4.0

4.0

3 95

3.9

3.8

3.8

3.7

3.7

q 7

3.7

3.7

3.7

3.7

3.7

3.6

3

C

3.5

3

C

q c

3.4

3

qK

3 q

3 q

3 q

3 q

3

0

°. 9

q 9

3 9

3 A

9 Q

2.9

2.75

2 7

2 7

 2.6

2.6

2.6

2.5

2.5

2

K

9 F;

2.4

2.3

9 Q

2.3

2.3

9 S

2.3

2.3

2.3

2.3

2.3

2.2

2.2

2.2

2.2

Apr.

0.9

1.0

1.6

1.15

1.1

3.05

2.9

2.9

2.8

2.8

2.65

2.5

2.4

2.4

2.4

2.9

3.1

3.0

2.9

2.95

3.0

3 fl

2.95

3

n

3.0

9 Q

2

0

2

0

2

0

2

0

2

0

2 7

2 7

2

1

2 q

2 q

2 9

2.1

2 flF;

2 fl

9 Q5.

2.7

5.05

7.4

6

Qc

5 Q

5.75

4.25

K 9

4.0

3.8

10.15

7.15

5.95

4.7

4 41

4.2

3

flK

3.6

3.6

May.

1.75

1.65

1.5

3.1

3.35

3.5

2.8

4.3

4.75

5.4 <\ i

5.2

5.1

4 9

5.0

4.5

41^

4 45

4.25

4.1

4.3

4

0

A C.

5.5

5.4

4 95

4 OK

4 1 f*

8

0

6.25

4 QC

A OK

4.0

3

1-

3 q

3 9

3 9

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

11.6

6.8

5 9

c 9

4.25

3.5

3 9

3

1

3

KC

^ n

11.0

10.75

7.95

S 9

4.3

4.3

June.

3.0

3.55

3.25

3.0

9.0

4.9

4.35

4.0

4.0

4 65

4.75

d Q

4 95

5

nc

5 9

5.4

1 Q

5.5

5.6

5.3

5 q

5

9C

5.45

5.6

5.7

5.4

5.4

5.4

5.35

4 3

3

QC

3.75

3.6

3.85

A AK

4.4

 4 qf*

4 35

4 05

3.85

3

9C

3

1

2 95

2 Q

2 9

2.8

2 7

2.6

2.6

2 a

2.7

2.6

s 1

4.0

3.7

July.

2.9

4.5

3.55

3.15

2.95

2.8

5.45

5.55

5.7

10.25

6.5

6.0

6.25

8 fl

5.75

5.4

5.5

5.8

5.95

6.2

5.75

5.45

K q

F; 9

5.25

5.05

5.1

5.25

5

9K

3.5

3.15

3 A

2

QC

9 7^

1 1

4 95

4.2

3 9

6.25

5. a

4.75

4.6

5.9

A KK

3.65

Q IF;

2 95

2

7K

2

7K

2

K

2.45

2

e

3

*\t\

3.55

5.8

5.4

5.1

Aug.

1.65

1.55

1.6

1.45

1.45

1.65

5.4

5.25

6.3

5.45

1 i

5.3

5.15

4

QK

4.8

4.95

5.1

4 an

4.75

4.55

4.45

4.6

4.45

A qc

4.15

A (\K

3

QC

3.8

3 7

3 OK

3

1

3 fle

q n

3 f\

5 q

5.3

6 9

5.4

5.15

9 75

8.45

7 Q

7.15

6.8

6.65

fi i

7 4f*

10.1

8.85

7.5

7 9

7.1

7.1

6.7

6.45

6.3

6.3

6 J.F;

6

7K

6.4

6.25

Sept.

12.0

10.9

10.15

9.7

9.2

5.25

4,9

4.8

4.95

5.65

6.2

5.85

6.2

6.25

7.45

6.4

7.1

7.3

6.35

5.95

5.8

5.5

5.95

5.7

6.75

7.35

7 OK

6 9

6.4

5 OK

5 OK

5.7

5.75

6.65

6 q

6

0

8

qK

9

7K

8.65

8.45

8.65

8.55

7.8

7.1

7.4

8

QC

8.15

7 OF»

6.85

6 25

5.85

5

fiK

5.45

5

9C

5.05

4.85

4.65

4.55

4

qe

4.25

4.2

Oct.

9.05

8.8

8.45

8.05

7.55

7.15

5.8

5.7

5.7

5.4

5.15

5.0

7.6

9.0

6.8

5.05

5.0

4.9

4.8

4.55

4.5

4.5

4.5

4.4

4.4

4.3

4.3

4.2

4.35

5 OK

A QK

4.85

A QC.

5.5

5.5

5.5

5.5

4.15

4.0

3

QK

^ Q

3.8

3.7

3.6

5.3

5.75

4.85

4.5

4.15

4.0

3 7

3

c:

3.35

3.3

3.3

3 9

^ 1«t

3.0

9 Q

9 1

5.5

4.05

3.45

3.4

3.35

3.35

3.35

3.25

Nov.

4.55

4.6

4.6

4.7

4.6

5.1

5.0

5.4

5.5

5.7

6.0

6.0

6.1

6.3

8.5

9.1

8.5

7.55

6.9

6.4

6.25

6.1

6.0

5.85

5.65

5.55

5.5

5.4

5.4

5.3

5.3

5.2

5.1

5.2

 3.2

3.3

3.15

3.0

3.0

3.0

3.0

3.0

3.0

3.0

2.9

3.05

4.2

q 7K

3.45

3.25

3.05

3.0

3.0

3.05

3.0

3.0

3.0

3.0

2.95

2.9

3.0

2.85

2.9

Dec.

4.4

4.4 4.'4

,3.-.9

<Z <J

3.S

5.2

5.2

5.4

5.3

6.8

7.6

7.5

6.9

6.55

6.35

6:25

6.1

6.0

5.95

5.85

5.75

5.55

5.4

5.4

5.4

5.3

5.15

5.0

5.0

4.95

4.9

4 Q

4.9

4 Q

4 9

4.85

2.9

2.95

3.0

3.0

2.95

2.9

9 Q

2.9

2.9

2.9

2.9

2.9

2 9

2.9

9 Q

2.9

2.8

2

0

2

0

2.8

2.8

2.8

2.75

2.75

2.8

2.8

2.8

2.8

2.8

2.8

2.9
BIO GEANDE. 93

EIO GEANDE NEAE BEOWNSVILLE, TEX.

^ This station was established in 1900 by the International Boundary 

@»mmission. It is about 1 mile above Brownsville, Tex., and.j>pposite Matamoros, Tamaulipas, Mexico, 900 miles by river below El

Between Roma and Brownsville there are many lagoons (olct river 

beds) which take river water during moderate floods, and a large 

area overflows rather deeply in larger floods. Much of this water 

returns slowly to the river as the flood subsides, so that the flow 

passes Brownsville more uniformly than it does at Roma. Large quantities of water also leave the river entirely, reaching the Gulf of 

Mexico through channels remote from the Rio Grande. Local run-off, 

however, keeps the total water at Brownsville well up toward the combined flow of the San Juan and the Rio Grande at Roma. Both 

banks are alluvial and are just about level with high water. The 

right bank is protected by piling.

As the bed of the river is constantly shifting, frequent discharge 

measurements are made to determine closely the daily flow.

Discharge measurements and gage heights for the years 1900 to 

1904, which have not hitherto been published by the United States 

Geological Survey, are given herewith, together with data for 1907-8.

The observations at this station have been made under the 

direction of the Mexican section of the International Boundary 

Commission.

Discharge measurements of Rio Grande near Brownsville, Tex., in 1900. 

[By P. Guerra.]

Date. Area of 

section.

Sq.ft. 

2,017

2,119

Gage 

height.

Feet. 

3.0

Discharge.

Sec.-ft. 

4,192

4,768

Date. Area of 

section.

Sq.ft. 

1,972

1,909

Gage 

height.

Feet. 

2.5

2.3

Discharge.

Sec.-ft. 

4,118

4,014

NOTE. Discharge measurements for 1900 complete so far as Mexican records exist.
94 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Grande near Brownsville, Tex., in 1901. 

[By P. Guerra.]

Date.

January 3 . . ...

Harcb.9. ...........

March 13...........

March 17. ..........

March 20. ..........

March 24... ........

April 1.............

April 4.... .........

April 12. ...........

April 16..... .......

April 20. ...........

April 24. ...........

April 28. ...........

May 2.. ............

May 4..............

May 5.. ............

May 13.... .........

May 17.. ...........

May21.. ...........

May25.. ...........

May29... ..........

Junel. ............

June 7.............

June 11 ............

June 15............

June 18............

June 22..... .......

Area of 

section.

Sq.ft. 

1,864

1,818

1,798

1,854

1,758

1,663

1,677

1,660

1 CQA

1,594

1,581

1,521

1,470

1,481

1,550

1,462

1,431

1,393

1,338

1,302

1,294

1,273

1,225

1,213

1,182

1,182

1,120

1,097

1,079

1,077

2,986

1,386

1,983

1,786

1,972

2,231

2,528

2,093

1,914

2,957

1,750

1,786

1,740

1,600

Gage 

height.

Feet. 

2.2

2.0

2.05

2.0

2.05

2.0

1.9

1.8

1.7

1.6

1.5

1.5

1.4

1.2

1.15

1.1

1.0

1.05

1.2

.9

.8

.7

.6

.3

.3

.1

.0

- .1

 .1

- .3

- .5

- .55

- .5

5.5

5.6

2.2

4.2

2.7

2.7

2.8

4.3

2.9

2.4

5.4

2.4

2.2

2.0

1.7

Discharge.

Sec.-ft. 

3,587

3,579

3,744

3,662

3,836

3,548

3,335

3

907

3,655

3

cno

3,505

3,150

3,128

3,117

3,000

2,745

2,773

3,189

2,870

2,762

2,592

2,463

2,336

2,306

1,996

1,914

1,751

1,691

1,638

1,639

12,721

10,771

3,561

6,502

3,747

4,066

3,933

7,256

4,300

3,505

9,663

3,452

3,493

3,364

2,943

Date.

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

July 5..............

July 12a ...........

July 20... ..........

July 24... ..........

July28.. ...........

September 22.

October 20.........

December 3

Area of 

section.

SSif58

2*586

4 548

1,642

1,770

2,780

1,857

1,678

1,538

1,714

1,487

1,833

2,136

2,129

1,734

2,020

3,744

2,012

2,934

2,280

2,943

3,011

. 3,278

2,767

2,666

2,546

2,921

1,930

3,625

2,481

3,036

2,251

2,799

2,610

2,633

2,628

2,470

2,332

2,011

2,031

2,012

1,939

1,757

1,741

1,773

1,693

Gage 

height.

Feet. 

1.4

4.4

11.0

4.0

3.2

6.0

3.0

1.8

1.5

1.8

1.5

2.2

2.9

2.9

3 A

2.2

1.6

2.2

2.1

7.9

2.9

5.45

3.7

4.75

4.9

7.3

H 9

4.0

3 A

5.7

3.0

6.5

4 4

4.6

5.2

4.1

3.6

3.6

3.7

3 A

3.05

3.75

2.8

2.4

2.0

1.6

1.6

1.7

1.3

Discharge.

Sec.-ft. 

2,812

9,806

27,956

4,427

3,386

9,834

2,813

2,434

2,152

2,451

2,217

3,775

3,753

4,125

3,461

2,816

3,621

14,731

3,907

9 680

4,937

6,236

7,662

14,461

9,898

4,834

9,774

3,758

14,352

7,310

6,639

6,661

5,521

5,063

5,433

5,184

4,887

5,017

5 480

4,274

3,854

3,483

2,877

2,849

2,927

2,660

a Measurements, July 12 and 16,1901, by E. Zayas.
BIO GRANDE. 95

Discharge measurements of Rio Grande near Brownsville, Tex., in 1902.

[By P. Guerra.]

Date.

January 12.........

February 1. .......

February 13.......

February 21.......

March 9............

March 13.. .........

March 17.. .........

March 21...........

March25...........

Aprils.............

April?.............

Aprilll. ...........

April 15.. ..........

April 19.. ..........

April 23. ...........

April27............

May3.............

May?...,.........

May 10. ...........

May 15. ...........

May 20. ...........

May 24. ...........

May 28. ...........

June2. . ...........

June 10............

June 13............

June 23 ............

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

Area of 

section.

Sq.ft. 

1,664

1,637

1,651

1,653

1,842

1,726

1,622

1,592

1,630

1,644

1,666

1,525

1,497

1,437

1,406

1,352

1,280

1,234

1,207

1,181

1,159

1,095

1,037

1,037

1,029

1,023

1,751

1,919

1.141

829

815

2,707

1,719

1,268

2,592

1,561

1,206

1,031

1,132

947

7Q4

895

900

1,023

822

height.

Feet. 

1.1

1.0

1.0

1.0

1.5

1.1

.9

.7

.6

.6

.6

.5

.45

.3

.2

.0

- .1

- .3

- .4

- .5

- .6

- .7

- .8

- .8

-1.0

-1.0

1.0

2.5

- .8

_ g

5.8

2.45

1.0

4.7

2.0

.9

.3

.6

.1

__ 9

- .1

.3

- .4

 Discharge.

f

Sec.-ft.

2,637

2,646

2,885

2

Kflfi

2,259

2,192

2 OQ9

2,103

2,213

1 999

2,001

1,875

1,932

1,766

1,625

1,699

1,489

1,360

1,325

1 QOO

1,276

1 970

1,178

1,177

2

fiQH

3,430

1 799

1,126

1,099

10,258

2,737

1,674

7,076

2,389

1 656

1,381

1,254

1,025

1,198 1 ''Ol

1,601

1,216

Date.

July9. ............

July 13. ...........

July 18.... ........

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

July25. ...........

July 30... .........

Area of 

section.

Sq.ft. 

1,113

1,271

898

2,420

1,872

4,314

4,436

2,705

2,726

2,411

3,040

3,032

3,038

2,648

2,700

2,889

2,983

4,574

5,180

3,677

3,889

3,872

3,932

3,210

2,518

2,402

5,461

2,526

2,106

2,232

1,857

1,944

1,918

1,663

1,456

1,688

1,645

4,202

2,490

2,040

1,938

1,772

1,708

Gage

height.

Feet. 

0.4

.8

- .4

3.7

2.2

8.7

9.0

5.8

4.6

5.1

5.0

5.0

3.9

4.0

4.9

6.4

10.8

11.9

8.8

9.1

6.85

7.2

7.5

4.7

3.8

11.95

5.25

3.9

3.3

3.8

2.7

3.1

3.0

2.1

1.5

1.95

1.7

8.4

 3.8

2.1

1.9

1.5

1.2

Discharge.

Sec.-ft. 

1,917

2,092

1,251

4,957

3,594

19,957

21,254

8,488

5,660

4,305

7,677

6,715

6,922

5,224

5,622

6,776

11,062

19,486

23,509

14,023

14,493

9,422

10,3S2

11,533

5,5t»

4,326

24,325

6,108

4 046

3,368

4,047

3,144

3,525

3,556

2,786

2,210

2,870

2,727

15.232

4,746

3,182

2,937

2,571

2,443

« Measurement, January 16,1902, affected by wind, rejected. 

6 Measurement, August 21,1902, by E. Zayas.
96 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Grande near Brownsville, Tex., in 1903. 

[By P. Guerra.j

Date.

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

May 4..... .........

May8..............

May 13.... .........

May 17... ..........

May25... ..........

May 29... ..........

July3..............

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

July 12.. ...........

July 16.. ...........

July 20.............

July 24.... .........

July 29.... .........

Area of 

section.

Sq.ft. 

1 646

1,584

1,559

1,710

1,755

1,636

1.624

1,524

1,522

1,509

1,549

1,951

1,915

1,276

3,133

2,172

2,322

3,296

3,702

1,808

1,891

1 644

2,233

2,201

2,090

5,758

5,995

4,153

4,535

4,276

5,064

3,109

3,317

3,682

3,356

2,902

Gage 

height.

Feet. 

1.1

 1.0

.9

1.0

1.45

1.5

1.1

1.0

.8

.8

.8

.9

1.8

1.7

.5

4 9

2.3

2.8

5.7

6.8

2.5

2.6

1.7

3.1

3.0

2.6

12.2

12.7

9 6

9.1

8.1

10.1

7.1

7.6

6.2

5.3

4.2

Discharge.

Sec.-ft. 

2,361

2,294

2,257

9 Q1 Q

2,797

2,830

2,534

2,492

2,174

2,185

2,129

2,239

3,132

3,100

1,790

7,925

4,242

4,904

9 188

11^616

4,022

4,307

3,511

5,736

5,462

4,278

31, 158

33,699

14,015

12, 731

10, 173

19, 159

7,685

8,596

7,776

6,425

 Date.

October 29. ........

Area of 

section.

Sq.ft. 

5,941

4,113

3,094

3,078

5,809

3,151

2,817

2,843

2,978

3,361

5,670

2,870

2,935

2,672

3,340

3,438

3,485

2,882

2,785

2,310

2,131

2,111

1,895

1,843

1,775

1,720

1,670

1,629

1,581

1,575

1,557

1,533

1,487

1,471

1,467

1,464

1,443

Gage 

height.

Feet. 

12.2

8.2

5.3

5.2

12.2

6.8

5.3

4.8

5.3

6.2

11.0

5.3

5.5

4.7

7.4

6.9

7.5

4.9

4.3

3.1

2.7

2.6

2.5

2.0

1.8

1.4

1.3

1.2

1.1

1.0

1.0

.9

.8

.8

.8

.8

.7

Discharge.

Sec.-ft. 

29,898

11,146

5,752

5,624

31,670

9,695

8,308

4,952

5,533

7,757

19, 434

6,072

6,275

5,471

10,714

10,448

11,356

5,671

5,862

4,456

4,249

4,080

3,579

3,441

3,160

2,846

2,677

2,611

2,541

2,429

2,430

2,236

2,173

2,140

2,129

2,135

2,086

NOTE. Discharge measurements for 1903 complete so far as Mexican records exist. None for March and 

April, 1903.
BIO GRANDE. 97

Discharge measurements of Rio Grande near Brownsville, Tex., in 1904. 

[By P. Guerra.]

Date.

January 7..........

January 28 .........

Februarys.........

February 9. ........

February 16. .......

February 24. .......

February 28........

March?............

March 11.. .........

March 19. ..........

March 27...........

March 30. ..........

Aprils.............

April 10... .........

April 14... .........

April 19............

April 23............

April 28.. ..........

May 2.... ..........

May 10.............

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

May 18...... .......

May 23.... .........

May 27... ..........

May 31.. ...........

June 13.............

June 21.. ...........

Area of 

section.

Sq.ft. 

1,430

1,424

1,422

1,418

1 4fR

1,397

1,382

1,322

1,338

1,332

1,340

1,513

1.300

1,302

1,358

1,316

1,213

1 180

l'l6^

1,157

1,147

1,133

1,141

i n84

3,897

1,594

1.338

975

903

914

1,158

4,237

2,490

1,766

4,486

1,969

1,624

1,161

2,926

5,006

2,641

2,880

9t 174

2,530

height.

Feet. 

0.7

.7

.7

.6

.5

.4

.2

.2

.2

.2

.7

.0

.0

.2

.0

- .3

- .4

- .6

- .6

- .7

- .7

- .7

- .5

7.6

2.7

1.0

- .0

- .3

- .3

.1

8.5

4.6

2.85

10.25

3.3

1.9

1.1

5.2

10.9

5.5

4.9

3.5

4.0

Discharge.

Sec.-ft. 

2,077

2,050

2,054

2 fKQ

I Qfil

1 954

1,910

1,876

1,878

1,853

1,872

2,299

1,885

1

QQQ

2,009

1,912

1,678

1 511

I'^Bff

1,451

1,420

1,373

1,391

1

0752

7,901

3,863

1,998

1,328

1,205

1,208

1 f*7S

5,529

3,702

10, 138

3

0OA

1,525

6,136

22,180

7,898

5,767

4,061

4,652

Date.

Tii no 9Q

July3..............

July7..... .........

July 11.. ...........

July 16.. ...........

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

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

July 29.. ...........

September 24

October 24

October 29

November 19

Area of 

section.

Sq.ft.

9 nRK

5,078

2

CCJ.

2,260

1,714 i id4

1,339

9 7Q1

2,118

1,802

1,663

2,029

2

«cn

1,703

1 47Q

1,433

1,299

1 497

5

CQ7

5

QCQ

6,068

6,068

6,146

5

QQA

4,769

5,056

5 QQ7

* R71

5 9**6

5

CJ.Q

5,449

5,079

4,558

3 QKft

3

QQA

3,714

3 7Q9

3,676

3 too

3 404

3 977

3

-lQQ

 ? 117

3

AQQ

Gage 

height.

feet. - 

2.4

10.8

4 «,

3.2

9 n

1.2

.9

4 6

2.5

1.6

1.0

1.9

2.5

1.3

.5

.4

.1

.7

11.7

12.5

19 Q

12.9

12 7

10 e

10.2

10.9

12.5

12.7

19 fi

12.4

11.4

10.4

9.0

8

1

7.6

7.0

7.1

6.7

6.4

7.0

6.6

6

0

5 Q

Discharge.

Sec.-ft. 

3,351

22,487

5,711

3,748

2,336

1,925

1,436

5,945

3,075

2,398

2,090

2,677

3,146

2,341

1,945

1,736

1,443

1,718

25,168

27,490

29,203

29,407

27,874

27,369

22,087

. 23,900

27,276

27,516

28,586

25.218

21,546

19,295

16,741

12,956

10,308

9,298

9,683

9,288

8,647

9,627

9,031

8,470

8,561

8,076

24440 IRE 248 10-
98 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Grande near Brownsville, Tex., in 1907. 

By P. Guerra.]

Date.

January 23.........

January 27.... ....

February 23. .......

February 28.......

March 7............

March 11.. ........

March 23...........

March 27...........

March 31. ..........

April 2... ..........

April 6.............

April 10 ...........

April 14...........

April 18............

April 22 . ........

April 26. ...........

April 30............

May 2.............

May 6..............

May 10.............

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

May 18.. ...........

May 22............

May 28.............

May 30..... ........

June 11.. ...........

June 21.. ...........

July 3. .............

Area of 

section.

Sq.ft. 

2,767

2,731

2,649

2,593

2, 506

2,524

2,540

2,571

2,541

2,597

2,573

2,490

2,258

2,170

2,151

o 129

2,070

2,054

1,892

1,870

1,783

1,759

1 74 '">

1,736

1,676

1,654

1,814

1,806

1,783

 1,710

3,712

2,760

2,978

2,610

2,474

.2,791

5,606

2,707

2,732

3,063

.3,238

4,095

3,936

3,374

Gage 

height.

Feet. 

5.3

5.0

4.7

4.4

4.2

4.3

4.3

4.2

4.4

4.0

3.5

3.2

3.1

3.0

2.7

2.5

2.3

2.2

1.8

1.7

1.7

1 6

1.3

2.1

2.1

1 9

1.6

2.2 '

7.8

K 1

4.7

4.1

5 A

13.3

5.7

5.1

5.4

6.6

8.25

7.1

Discharge.

Sec.-fl. 

6 199

6,148

5,797

5,437

5,292

5,3(12

5,299

5,483

5,097

4,596

4,386'

4,323

4,246

4,075

3,402

3,341

3,138

3,095

3,044

2,897

3,163

3.185

2,985

3,283

14, 593

6,604

5,773

5,437

6,290

31,604

6 604

6,011

6,126

7,977

8,322

13,193

12,749

9,633

Date.

July 14.............

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

July 26.. ...........

July 30.............

October 10.........

October 22.........

October 30... .......

Area of 

section.

Sq.ft.

G,12ti

3,528

3,487

3,211

2,972

2,877

2,904

2,777

2,495

2 422

2,032

1,939

2,060

3,265

3,598

3,270

3,733

3,536

2,977

2,925

2,640

4,628

2,932

2,574

2,447

2,464

2,729

2,929

2,880

3,528

4,275

3,518

3,384

3,278

3,328

4,611

3,799

3,629

3,435

3,356

3,202

3,138

Gage 

height.

Feet. 

13.4

13.7

7.3

7.75

6.8

6.2

5.5

5.2

5.3

4.9

4.5

4.0

3.7

2.6

2.3

3.0

5.7 -

7.8

8.0

6.7

8.3

8.7

7.0

0.9

6.0

11.4

5.8

4.8

4.4

4.6

5.4

7.0

6.8

8.6

10.6

7.9

6.9

6.4

6.1

6.2

9.9

8.2

7.7

7.1

6.6

6.1

5.6

Discharge.

Scc.-ft.

30,885

8,075

8,221

7,464

6,377

6,018

6,104

5,814

5,562

5,187

4,948

3,422

3,156

4,141

11,453

12,752

12,854

10,641

13,574

13,178

10,645

10, 207

9,077

19,340

6,152

5,152

4,843

4,934

5,642

10,270

10, 030

13,2"8

18,174

11,531

8,696

8,147

7,703

7,904

20, 476

12, 154

11,599

10,943

8,146

7,561

7,108
RIO GEANDE.

Discharge measurements of Rio Grande -near Brownsville, Tex., in 1908. 

[By P. Guerra.]

Date. '

March 2............

March 14...........

March 18...........

March 26...........

 April 7.............

April 11............

April 14. ...........

April 18. ...........

April 20............

April 24. ...........

May3......'........

May 7. .............

May 11.............

May 15.............

May 17..... ........

May 21.............

May 25.............

May 27.. ...........

May 29.............

July 2..............

Area of 

section.

Sq.ft.

9 7jn

2,665

2,646

2,285

2,282

2,104

2,004

1 Q93

1,883

1 744

1,764

1,733

1 71 Q

1,612

1,553

1,517

1,506

1 fiOfi

1,469

1,455

3,571

3,362

3,002

2,158

2,030

2,090

1,988

2,584

3 oni

3,742

9 QHPi

2,214

2,116

2,107

1 994

1,824

1 749

2,150

2,182

Gage 

height.

Feet.

5

0

5.1

4 6

4.1

3 Q

3.8

3.6

3.6

3

0

*> Q

2.6

2.6

2.5

2 1

2.0

1 9

1.6

1.3

1.2

1.1

1.0

0 9

0.8

0.6

0.5

7.1

6.5

10 A

4.0

3.8

3.4

5.0

4.0

9

1

8.3

5.1

4.2

3.8

. 0 O

2.8

2.3

1 Q

3 9

3.4

Dischargs.

Sec.-ft.

5,615

5 1 70

4 931

4^769

4,550

2,993

2,728

2,628

2,257

2,179

1,959

1 914

1,842

1,634

1,600

8,508

7,732

28,805

6,552

2,594

3,409

2,525

27,705

12,999

12,089

3,445

3,080

2,802

2,552.

3,578

3,466

Date.

July 6..............

July 14.............

July 18.............

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

July 26.... .........

July 30.............

September 22.......

October 19.........

November 18

Area of 

section.

Sq.ft. 

1,940

2,350

3,039

2,583

1,858

1,696

1,907

3,916

3,308

4,944

3,888

5,134

5,644

4,031

3,728

4,022

3,800

4,825

5,323

4,441

5,135

3,136

2,828

2,519

2,742

2,635

3,094

2,573

2,372

2,312

4,444

2,528

2,338

1,717

1,572

3,101

2,532

1,745

1,559

1,526

1,525

1,555

1,496

1,462

1,448

1,442

1,442

1,442

Gage 

height.

Feet. 

2.5

4.6

5.4

5.0

2.3

1.7

2.4

8.6

6.0

11.2

9.0

11.8

13.0

9 3

8.1

8.8

8.2

11.0

12.1

10.0

11.8

7.8

6.8

5.6

4.9

4.3

6.1

4.1

3.3

3.1

9.8

4.0

3.2

2.6

6.1

4.0

2.7

2.3

2.0

2.0

2.1

1.9

1.8

1.7

1.6

1.5

1.5

Discharge.

Sec.-ft. 

3,042

4,130

7,030

5

9QQ

2,907

2,452

2,837

13,124

8,034

21,862

12,790

23,148

27,785

13,629

12,033

13,662

19,897

24,561

17,626

21,726

9,315

8,153

7,135

4,371

4,096

7,477

3,804

3,376

3,212

17,125

3,590

3,407

2,325

2,087

7,488

3,651

2,424

2,039

1,932

1,950

2,058

1,850

1,723

1,731

1,726

1,722

1,730

Daily gage height, in feet, of Rio Grande near Brownsville, Tex., for 1900 to 1904,1907,

and 1908.

Day.

1900.o 

1...... .........

2. ..............

3.... ...........

5...............

6. .............. 

7......-........

8............... 

9............... 

10. ..............

11............... 

12. ..............

13. ..............

14. ..............

15...............

Jan.

.......

Feb.

.......

Mar.

.......

.......

Apr.

.......

May.

6.0

8

Q

10.4 

9.1

6.95

5.4 

4.9

4.55 

4.4 

4.2

4.0 

3.95

3.95

3.9

3.55

June.

6.35

10.4 

12.5

10.25

8.25 

11.0

10.9 

8.3 

6.65

6.05 

6.0

6.0

5.75

5.45

July.

4.05

3 Q

6.4 

7.25

6.6

5.5 

4.7

4.9 

6.1 

5.7

5.5 

5.15

4.75

4.65

4.35

Aug.

10.0

9.15

8.4 

8.0

7.7

7.4 

7.35

8.15 

8.6 

9.25

9.95 

12.1

12.75

12.95

12.8

Sept.

6.65

6.5

6.45 

6.3

6.85

7.35 

7.05

7.4 

8.95 

10.45

8.2 

6.6

5.9

5.55

5.25

Oct.

9.1

8.2

8.05 

8.7

8.3

7.65 

7.7

7.6 

7.3 

6.95

6.9 

6.75

6.45

6.4

6.15

Nov.

.......

.......

.......

.......

Dec.

......

......

......

......

> Gage heights for 1900 complete so far as Mexican records exist.
100 SURFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Rio Grande near Brownsville, Tex.,for 1900 to 1904, 1907,

and 1908 Continued.

Day.

1900. 

16. ..............

17...............

18...............

19

20. .............. 

21...............

22. ..............

23...............

24............... 

25...............

26. ..............

27...............

28.. .............

29. ..............

30. ..............

31...............

1901. 

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

1902. 

1... ............

2. ..............

3...............

4...............

5... ............

«.. ........... ..

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

Jan.

2.3

2.3

2.2

2.2

2.2

2.0 

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

1 9

1 9

1 Q

1 9

1 8

1.8

1.8

1.8

1.8

1.8

1.7

1.7

1.2

1.2

1.1

1.1

1.05

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.3

1.35

1.45

Feb.

- -/ - 

1.65

1.6

1.6

1.6

1.55

1.5 

1.5

1.5

1.5

1.5

1.5

1.4

1.4

1.4

1.4

1.4

1.4

1.2

1.2

1.2

1 9

1.25

1.1

1.1

1.1

.7

.7

.6

.6

.6

.6

.6

.6

.6

.6

g

.6

.6

.6

.6

.6

.5

,5

.5

.5

Mar.

.......

-------

,

1.0

1.0

1.0

1.0

1.0

1.0 1.1 1.1

1.2

1.1

1.0

1.0

.9

g

.9

.9

.8

.75

.7

.6

.6

.6

.5

.4

.3

.1

.1

.1

.0

e

-.15

__ OK

-.3

-.3

-.3

-.35

-.4^

-.4

r--4

-.5

 .5

Apr.

5.75

7.1

.3

.25

.2

.15

.1

.1 

.1

.0

.0

.0

.0

- .1

- .1

\

- .1

.1

- .2

- .2

9

- .3

- .3

QC

- .4

.5

- .5

- .8

- .8

- .8

- .8

- .8

- .8

- .8

- .9

- .9

-1.0

-1.0

-1.0

-1.0

-1.0

-1.0

-1.0

g

OE

.8

5.1

May.

3.45

8.7

11.95

12.55

12.85 

11.8

9.5

U AX

12.4 

11.3

10.25

9

OC

8.3

7 9

6.7

-.5

-.4

5.3

5.75

3.8 

2.9

2.4

2.2

2.6

5.6

5

QC

4.4

4 9

2.95

2.65

2.35

2 OK

2.1

2

KC

3

CC

3.65

3.1

2.65

2 Off

3 45

A. 3

3.8

3.55

 45

(Of

-.75

Q

__ Q

-.85

o

3.7

7.87

6.67

4.1

3.2

3.05

2.8

2.4

2.05

1.75

1.4

1.15

.95

June.

5.3

5.0

5.0

5.25 

5.5

6.45

7.85

6.25 

5.4

4.9

4

AK

4.2

4.2

A 9

3.0

2.55

2.5

2.5

2.4

3.25 

5.5

4.2

3 1

2.55

2 A

9 9.

2.25

9 9

2.2

2.15

2

1

2 A

1 9

1.75

1.7

1.7

1.7

1.6

1.55

1 45

1.2

1.05

4.35

1.0

QC

.75

.65

.45

.35

.3

.5

.6

45

.25

.05

-.1

-.2

O

O

q

-.4

July.

3.95

5.85

10.05

11.0

9.4 

7.95

7.65

6.5

5.7 

5.4

5.05

4 9

4.8

5.65

5.5

7.7

10.15

11.6

5.35

4.15

3.65 

3.2

2.95

2.8

2

7=

4

7C

6.1

4.75

4.05

3.6

3.1

2.6

9 3

2.0

1.85

1.75

1.55

1.5

1.45

1.4

1.6

1.8

1 Si

1.7

1.55

1.5

.25

05i P;

_ q_e

- .4

- .4

- .25

.5

1.05

1 t

1.15

.7

,25

- .1

9t

qer

- .4

-1.75

3.7

Aug.

11.95

10.75

9.8

9.35

8.65 

8.3

8.1

7.5 

7.9

8.4

8.1

7.7

7.0

6.45

6.3

1.5

1.6

1.8

1.95

2.15

2.25 

2.5

2.9

2.95

2 9

9 Q

3.0

2.95

2.9

2.95

3.0

3 A

2.8

2 AC

2.45

2.25

> 1.95

1 9

1.75

1.55

i j*;

1.5

1.85

2.1

2.36

2.4

11.0

8.8

9 1

7.9

6.3

5.65

5.35

5.1

5.0

4.45

4 05

3.9

4.0

3.6

3 9

2

nfc

9 7C

4.35

5.5

Sept.

5.1

5.3

5.85

6.55

6.5 

6.2

6.05

5.85

5.55 

6.75

11.4

12.45

12.9

12.6

10.45

2.25

2.05

1.85

2.1

7.75

7.35 

5.5

4.6

3.45

2.95

2.55

4.25

7.65

4.3

3.85

3.6

3.7

4

C

5.35

5.25

4.75

4 95

3.7

3.9

A OK

-6.3

9.1

9.1

7.45

5.55

5.0

5.0

7.65

6.75

6.4

7.5

8.5

9 Off

9.8

10.85

11.6

11.95

19 n

11.7

10.7

9.05

8.05

Oct.

5.95

5.8

5.55

5.5

5.35 

5.05

6.5

6.55

6.6 

7.5

6.65

6.05

5.95

6.5

6.5

7.1

5.5

4.75

4.75

5.2

4.85

4.4 

4.05

3.95

3.8

3.55

3.5

3.35

3.85

8.1

6.4

3.9

3.35

3.15

2.95

2.75

2.6

2.8

6.35

5.55

4.6

4.9

4.15

4.1

4.1

6.25

7.05

9.8

10.3

8.0

5.9

5.0

4.7

4.7

4.6

4.55

4.15

3

Q

3.45

7.6

10 9

11.25

7.4

Nov.

.......

4.5

5.9

5.8

5.35

5.2

4.85 

4.45

4.25

4.1

3.95

3.65

3.6

3.55

3.5

3.5

3.5

3.6

3.65

3.7

3.7

3.7

3.7

3.5

3.4

3.05

2.9

3.05

6.3

3.2

3.85

3.4

2.95

2.7

2.6

3.1

3.5

3.3

3 A

2.75

2.8

2.95

2.8

2 EC

2.45

2 9

1.95

1-75

Dec.

3.0

2.85 

2.8

3.1

2.85 2.65- 

2.5

2.4

2.35

2.3

2.3

2.3

2.3

5.95

4.55

3.65

3.25

3.05

2.95 

2.75

2.6

2.5

9 5

2.4

2.3

2.2

2.1

2.0

1.9

1.8

1.75

1.65

1.6

1.6

1.6

1.6

1.5

1.5

1.5

1.6

1 4

1.35

1.3

1.3

1.85

1.7

4.7

6.6

8.3

6.7

4 95

4.2

3.65

3 Q

3 95

3.35

2.65

2.25

2.1

2.0

1.85

1.7

1.65

1.55
BIO GBANDE. 101

Daily gaffe height, in feet, of Rio Grande near Brownsville, Tex.,for 1900 to 1904, 1907,

and 1908 Continued.

Day.

1902. 

21...............

22. ..............

23...............

24...............

25. ..............

26. ..............

27...............

28............... 29............;..

30. ..............

Q1

1903.0 

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

1904. 

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

Jan.

1.4

1 25

1.15

1.1

1.05

1.0

.95

.9

.8

.8

.7

1.1

1.1

1.05

1.0

1.0

1.0

1.0

.9

.9

.9

.85

.8

.8

.9

1.0

1.0

1.05

1.1

1.45

2.15

2.4

2.15

1.85

1.6

1.4

1.25

1.15

1.1

1.1

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.6

.6

.6

.6

.6

.6

.5

.5

.5

.5

.5

.4

.4

Feb.

0.5

.4

.4

.4

.3

.3

.3

.1

1.0

1.0

1.0

.9

.8

.8

.8

.75

.7

.7

.8

.8

.8

.8

.8

.85

.9

.9

1.05

1.3

1.55

1.7

1.8

1.8

1.9

1.75

1.65

1.6

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.25

.45

.65

.55

.25

.15

.0

.0

.0

.0

.3

.05

Mar.

-0.5

- .6

- .6

- .6

- .6

- .6

- .6

- .6

- .7

- .8

.0

.0

.0

- .1

 .2

_ 2

- .25

- .3

- .3

- .35

- .4

- .4

- .5

- .6

- .6

- .6

- .6

_ g

- .6

- .6

- .6

- .7

- .7

Apr.

5.2 .

3.35

1.75

1.35

.9

.5

.1

- .1

31

- .4

- .4

- .4

- .4

- .5

- .6

 65

0

Q

_ n

- .9

_ g

n

- .75

- .8

- .65

- .55

_ rj

5.45

6.4

5 9

3 OK

2

0

2 OK

1.8

1.35

QK

.7

45

OC .1

.0

- .1

- .15

- .25

_ 3

 .4

May.

0.75

2.8

6.7

2.9

2.4

2 1 5.

1 Q

1.7

1.4

1 9

- .5

2.4

4.75

3.3

2.5

2

0

2.45

2 OK

1 Q

1.6

2 AIL

3

1

4.3

5.8

5.9

4

O

3 O

3.9

6.65

5.85

4

Q

3 OK

2 A

2

0

2.6

2

0

2.25

2 -I

.0

.0

.0

.7

7.3

6.5

4.0

2

7K

3-5

6.7

4 Q

3 7

3 0

5.7

7.2

7 Q

10.2

9 3

6.6

5.05

4 1 ^

3 EC

3 ft

2.6

June.

-0.55

- .3

- .15

- .1

- .1

- .1

- .1

.15

1.75

1.7

1.7

1.6

2.35

3.75

4 OK

°, IK.

3.0

2

QC

2 7

2.55

3.25

6.8

10.6

12.05

12.25

12.5

12.8

13.05

13.1

1 Q O

U QK

9

7K

9 1C

9.05

9 AC

9.15

8.9

1 °.

3.05

4.7

5.2

4.25

3.8

3.75

7.6

11-1

10.55

7.5 5.8-

5.35

4.7

4.4

4.7

4 9

4 Q

4.6

4.0

3.4

3 9

3.45

4,65

4.H

July.

3.8

3.4

o 9

2.5

2.15

1.95

1.85

2.25

5

KC

9 A

10.6

8.85

8.65

8.2 '

7.7

7.25

7.0

9 45

11.8

11.7

7.5

7.1

7.25

7 45

7.55

7.55

7.35

7.1

6.75

6.35

6.1

5 Q

5.55

5.25

i 71

4.55

4

qe

4.6

7.7

8 OK

2.8

9.6

10.7

7.4

5.8

5.35

4.7

4.05

3.85

3

0

*> Q

2.65

9 Q e

1 OS

1.75

1.6

1.45

I

O

1 9

1.1

1.0

1.0

.9

Aug.

5.15

4.85

4 7

4.65

4.45

4.3

4.1

3.95

3.85

3.95

5.4

9.25

12.2

12.65

12.8

13.0

11.5

8.2

6.8

6.05

5.6

5.3

5.3

5.15

5.15

5.2

4.9

4.55

8.0

12.35

11.6

8.5

7 Q

6.9

5.65

5

0

5.15

5

0

5.6

5.4

5.2

2.95

2.5

2.1

1.75

1.55

1.5

1 45

1.25

1.05

.95

Q

1.15

2

1

3 4.

2 9

2 OK

1 S

1

AK

1.4

1.25

.95

.65

.5

Sept.

7.65

10.2

8.9

7.15

6.6

7.45

7.2

6.7

5.85

5.45

4.9

4.6

4.5

5.0

5.3

5.1

4.9

4.9

5.8

6.2

6.7

11.1

12.45

12.65

11.5

7.65

6.0

5.45

5.3

5.25

6.15

6.4

5.8

5 45

5.35

5.2

4.95

4.8

4.65

4.3

.2

.1

.1

.1

.3

.55

- .75

1.0

9 n

9.25

11.07

10 OK

12.5

-IO KK

19 7

12.8

19Q

12 9

10 n

13 0

10 n

12 9

-IO Q

12.8

Oct.

5.75

5.2

5.0

4.45

4.15

3.85

3.65

3.5

3.15

3.1

4.35

7.2

6.75

5.85

5.75

5.9

6.65

7.1

7.4

7.55

7.45

6.45

5.7

5.2

4.95

4.65

4.35

4.2

4.3

4.0

3.6

3.3

3.05

2 Q

2.8

9 7

2.6

2

C

2.6

3.25

4.05

12.6

12.6

12.55

12.4

12.25

12.05

11.7

11.7

11.15

10.25

10.25

10.1

10.15

10.4

10 9

11.5

IO 9%

19 4.

12.5

12.5

19 1

12.65

19 71

12.8

Nov.

1.65

1.5

1-5

1.5

1.45

1.45

2.0

2.3

2.15

1.95

3.65

2.85

2.5

2.35

2.2

2.05

2.0

2.0

1.85

1.8

1.8

1.7

1.6

1.55

1.45

1.4

1.4

1.3

1.3

1.3

1.3

1.3

1.25

1.2

1.2

1.1

1.1

1.0

1.0

12.3

12.2

12.4

12.5

12.05

11.85

n

o

10.65

10.15

9.95

10.45

10.1

9.55

9 91

8 Q

8.5

8

0

8 9

8 1

8 A

7 Q

7 75

7.6

7.45

7.25

Dec.

1.5

1.5

1.4

1.3

l.S

1.2

1.2

1.2

1.2

1.15

1.1

1.0 1.0*

1.0

1.0

1.0

1.0

1.0

.9

.9

.9

.85

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

' .8

.8

.8

.7

.7

.7

.7

.1

7.3

7.2

7.1

7.0

6.85

6.T

6.6

6.5

6.4

6.4

6.4

6.85

7.0

7.0'

7.0J

6 <t

6.8

6.65

6.46

6.3,

6 2'

6 2"

6.2.

&$

fi.4.

a Gage heights for 1903 complete so far as Mexican records exist.
102 SURFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Rio Grande near Brownsville, Tex.,for 1900 to 1904. 1907,

and 1908 Continued.

Day.

1904. 

26...............

27...............

28. ..............

29. .............. 

30. ..............

31...............

1907. 

\. ..............

2.. .............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21............... 09

23...............

24...............

25...............

27...............

28...............

29...............

30...............

31...............

1908. 

1............... 

2...............

3...............

4...............

5...............

6. ..............

7...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16................

I?;..............

18...............

19

20............... 

 21...............

22............... 

23................

24...............

25...............

/

 26...............

27............... 

28...............

29;..............

30............... 

31...............

Jan.

0.4

.4

.3 

.3

9

5.5

5.4

5.3

5.25

5.2

5.1

5.05

4.9

4.8

4.7

4.6

4.55

4.5

4.4

4.4

4.4

4.3

4.2

4.2

4.2

4.3'

4.3

4.3

4.3

4.3

5.4 

5.3

5.2

5.1

5.1

5.1

5.0

4.8

4.7

4.6

4.5

4.35

4.1

4.0

3.95

3.9

3.9

3.85 

3.8

3.8 

3.75

3.7

3.6

3.6

3.6 

3.6

3.6

3.6 

3.6

Feb.

0.2

2

.15

.0

4.2

4.1

4.2

4.2

4.3

4.4

4.5

4.4

4.4

4.3

4.3

4.25

4.1

3.95

3.8

3.7

3.6

3.5

3.4

3.2

3.2

3.2

3.2

3.2

3.1

3.5 

3.3

3 OK,

3.1

3.1

3.0

2.9

2.85

2.8

2.8

2.6

2.6

2.6

2.6

2.6

2.6

. 2.6

2.5

2.5

2.5 

2.4

2.3

2.2

2.1

2.1

2.1

2.1 

2.0

2.0

Mar.

-0-7

- .7

7

- .7

3.1

3.0

3.0

3.0

2.9

2.8

2.7

2.6

2.5

2.5

2.45

2.3

2.4

9 4

2.3

O q

2.2

2.1

1 9

1.8

1.8

1.7

1.7

2.0 

2.0

1 9

1 9

1.85

1.75

1.6

1.55

1.5

1.4

1.35

1.3

1.3

1.2

1.2

1.2

1.1

1.1 

1.1

1.1 

1.1

1.1

1.0

1.0

1.0 

1.0

1.0

.9 

.9

Apr.

-0.3

_ 9

_ _ 2 '.Q

1.7

1.7

1.7

1.7

1.6

1.6

1.4

1 Q

1.25

1.2

1.2

1.55

1.75

2.1

2.1

2.1

2.1

2.0

1 9

1 s

1.6

1.6

.85

.7

.65

.6

.5

.5

.75

7.5

12.25

13.05

10.45

8.25

7.4

(5 9

6.65 

5.9

9.5 

13.15

9 7

6.5

5.55 

5.35

5.05

4.7

May.

0 9

1.85

1.45 

1.25

1.1

2.1

9 2

9 9

9 9

3.5

10.85

7.65

5.05

6.6

6.35

4 65

4.45

4.1

4.7

5.6

5.5

5.5

12.0

9.7

4.4

4 1 ^

3

nc

3.8

q 7=

3.6

q 7C

4.1

3.85

3.75

3.65

3.4

8.0

13.5

12.4

7.65

5.75

4.3 

4.0

4.0

4.0

4.0

8.25 

10.5

8.0

5.C5 

. 5.3

June.

1 Q *

3.25

9 65

2.35 

2.15

7.6

5.9

5.7

5.7

5.1

5.0

5.15

c q£

e QK

6.1

6.2

6.3

6.4

6.65

7.8

8

qc

7.2

7 ^

7 7%

8 f\

7-6

7 ^K

7.15

7 05

6.7

5.1

5.5

5.2

4.75

4.3

q Q

3.8

3.85

4.0

4.0

4 0

3.35

3.2

2.75

2.4 

2.3

2.25 

2.0

1.9

L9

5.7

3.8

July.

0 9

4.25

4.75

4.65 

4.15

3.6

6.4

7 3

11.15

13.4

12.0

10.4

11.8

9 05

7 S

7 ^

7.15

7.1

7.65

7 45

7 25

ft. ne

6.65

6.5

5

QE

5 7

5.6

5 45

5.25 

3.55

3

qe

3 fit;

2 Q

2.4

2.15

2.3

3.45

4.6

5.1

6.15

6.75

5.1

5.45

5.2

5.0

3.25 

2.85

2.4 

2.05

1 9

1.85

1.75

1.45 

1.2

1.6

2.4 

2.'55

Aug.

0.5

.45

.4

.4

5.2

5.2

5.2

5.3

c q

5.2

4.85

4.65

4.5

4.5

4.1

4.1

4.0

4.0

3 Q

q 7C

3

c

q i c

0 95

2.45

2

0

2.3

2.25 

5.4

7.65

7.3

6.55

5.5

o nc

10 9

10.75

10.85

9.9

8.7

a 1

7.75

8.65

11.4

12.75

11.65 

9.9

.9.45 

9.2

8.6

8.1 

7.95

7.7

7.95 

8.7

Sept.

12.7

12.7 

12.7

9 95

3 °5

4.75

6.7

7 05

7 S

7 9

9.15

Q Ot

7

QC

7

QC

7 7<T,

7 Q

& 7

6.7

7 Q

9

0

10.1

9 A

Q SP;

7.65

6

QK

8.0

7 7Z

8

1 CL

9 95

9 9

9.25

11.6

11.8

12.1

11.65

9 8

9.55

11.65

12.4

11.4

9.4 

s fi

7.9 

7.55

7.3

7.05

6.8

6.5 

6.15

5.9

5.55

Oct.

12.7

12.7

12.6 

12.5

6 9

7.0

6.7

6.3

6.05

6.35

10.4

11.55

6.6

5.5

5.15

4 95

4.7

4.6

4.5

4.4

4 q

4.2

4.2

4.7

5.05

5.2

5 q

5.45

5.65

5.35 

5.1

4.9

4.55

4.45

4.2

4.0

3.9

6.1

6.05

5.35

4 65

 4.2

3.9

3. §5

3.45

3.25

3.05 

2.85

2.65 

3.05

9.55

7.25

5. 25 

4.4

3 Q

3.65 

3.4

Nov.

7.0

7.0

7.2 

7.2

6.0

7.75

7.1

6.0

5.95

6.5

6.7

7.1

7 85

8.45

9

K

11.55

10.6

8 9

8

n

7.75

7 3

6.75

6.3

6.2

6.1

3.3 

3.15

9 95

2.75

0 7

2.6

2.5

2.4

2.3

2.2

2.25

4.15

6.4

5.25

4.55

4.25

3.9

3.45

3.15 

2.85

2.65 

2.55

2.5

2.4

2.0

2.0

2.0

Dec.

6.3

6.2

6.1

6.0 

5.9

6.0

6.2

6.25

6.4

7.7

9 9

8 7

8

ne

7.85

7.7

7.7

7 J 1!

7.25

7.1

6.85

6.7

6.55

6.4

6.25

6.15

5.75

5.6

5.6

5.55

2.0 

2.0

2.0

1.9

1 9

1.9

2.1

2.1

2.0

1.95

1.9

1.9

1.85

1.8

1.8

1.7

1.7

1.7

1.7

1.7 

1.65

1.6 

1.6

1.6

1.5

1.5

1.5 

1.5

1.5

1.5

1.5
CONEJOS KIVEE. 103

CONEJOS RIVER NEAR MOGOTE, COLO.

Conejos Kiver, the most important tributary of the Kio Grande in 

Colorado, rises on the eastern slope of the San Juan Range, which 

forms the western boundary of Conejos County. It first flows southeastward, but at the town of Conejos bends northeastward and enters 

the Rio Grande below the mouth of Trinchera Creek.

The gaging station which was established March 21, 1907, replacing the station formerly maintained about 4 miles below, is located 

at a private highway bridge on Jacob's ranch, about 16 miles above 

Antonito, Colo., in T. 33 N., R. 6 E., New Mexico principal meridian. 

It is above every important diversion for irrigation, and below all 

the principal tributaries except the San Antonio.

The data obtained at this station show the amount of water available for irrigation.

Water taken from the Conejos by numerous ditches below the 

station is used to irrigate 70,000 to 80,000 acres of land. The basin 

above the station affords excellent opportunities for storage, no'ne 

of which are utilized at the present time. It will be difficult to 

procure additional water rights for irrigation along this stream.

The river is covered with ice for three or four months during the 

winter season. The stream bed is strewn with cobblestones and 

bowlders, the water has a comparatively high velocity at all stages, 

and there are eddies around the crib piers of the bridge. The rating 

curve developed, however, is very good for low and medium stages.

The datum of the chain gage has not been changed since the station was established. This gage is at the same datum as the rod 

gage used by Mr. Antoine Jacob during 1905 and 1906. The gage 

heights for these years have been furnished the United States Geological Survey by him from his private records.

Discharge measurements of Conejos River near Mogote, Colo., in 1907 and 1908.

Date.

1907. 

March 21.......

April 22........

May 13.........

June 27.........

July 30.........

August 29......

1908. 

March 27.......

May 18.........

July 11.........

Hydrographer.

.....do.............................................

.....do.............................................

.....do..............................................

.....do..............................................

C. L. Chatfield .....................................

J. B. Stewart. ......................................

.....do..............................................

.... .do.... ......................................... .

.....do..............................................

Width.

Feet.

95

92

127

127

108

92

100

84.5

86

112

122

98

45

39.5

Area of 

section.

Sq.ft. 

178 183

228

376

416

250

174

133

102

126

259

339

207

49

49

Gage 

height.

Feet. 

1.38

1.50

1.77

2.77

 3.07

1.88

1.22

.79

.50

.75

2.03

2.54

1.52

.70

.82

Discharge.

Sec.-fl. 

374

402

573

1,990

2,310

775

280

134

83

138

709

1,200

423

a 52

a 67

a Measurement made by wadlag downstream from bridge. Ice conditions at gage.
104 SURFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Conejos River near Mogote, Celo.,for 19'05 to 1908.

Day.

1905. 

1. .........

2..........

3..........

4..........

5..........

6..........

7..........

8..........

9.......... 

10..........

11..........

12..........

13..........

14..........

15..........

D

19

2..........

3..........

4..........

5...........

6..........

T. .........

8..........

10....... .»

11..........

12..........

13..........

14..........

15..........

May.

1.9

1.7

1.55

1.6

1.8

1.9 

1.8

1.7

1.7

1.9

2.0

2.2

*y06.

June.

3 A

3.6

3.85

4.0

4.25

3.75

3.6

3.75

3.65 

3.4

3.5

3.3

3.25

3.2

3.25

July.

1 95

1.8

1.65

1.7

1.55

1.45

1.4

1.35 

1.4

1.35

1.3

1.25

1.5

1.25

Apr

A

1

1

1

1

1

1

1

1

1 

1

1

1

ug4

3

3

5

45

?£>

5

4

25 

?R

?,

0

8

7

7

M

1

1

1

1

1

c

c

e

f

e

Sep1

0.6

6

.6

,6

6

,6

e

.6 

6

fi

5

5

.5

ay.

45

4

.4

85

.95

! 0

i. 4

> 5

i, 75

! 8

> 65

!, 5

55

!, 55

t.

^

i

Oct.

0.5

.5

.5

.5

June.

9 <;<;

2.75

2.6

2.75

3.25

3.5

3.4

0 A

3.5

3.7

3.7

3.75

3.6

3.65

Day.

1905. 

16..........

17..........

18..........

19..........

20..........

21...;......

22..........

24.......... 

25..........

26..........

27..........

28..........

29..........

30..........

31..........

Da

19( 

16...........

17...........

18..........

1Q

20. ..........

21..........

22...........

23...........

24..........

25...........

26..........

27. .........

28...........

9Q

30...........

31...........

May.

2.6

2.7

2.9

3.0

3.0

3.15

3.25

3.25

3.35

3.4

3.35

3.35

3.15

3.0

3.0

3.2

yw.

June.

3.4

3.0

2.9

2.8

2.6

2.5

2.4

2.45

2.35

2.5

2.3

2.3

2.2

2.15

2.05

July.

1.25

1.2

1.3

1.3

1.5

1.35

1.25

1.2

1.15 

1.05

1.0

1.0

1.15

1.0

1.2

1.15

Apr

1.8

1.6

l.S

1.8

1.7

1.7

1.7

1.4

1.4

A

(

,5

5

5

5

5

ag-

) 7

6

6

.6

.fi

.5

5

.6

.6 

6

,7

6

,6

.7

7

.6

M

9

f

9

3

9

3

3

3

9

9

9

9

9

9

9

Sep

0 5

5

5

.4

....

,5

ay.

7

8

85

.95

.3

,?.">

.15

85

,45

45

75

cc

5

45

fc.

i

Oct.

tune.

3.65

3.55

3.4

3.25

3.15

3.0
CONEJOS EIVEE. 105

Daily gage height, in feet, of Conejos River near Mogote, Colo.,for 1905 to 1908 Con.

[Francisque Jacob, observer.]

Day.

1907. 

1...................

2...................

3...... .............

4...................

5.. .................

6...................

7...................

8...................

9

10...................

11...................

12...................

13...................

14...................

in

16...................

17...................

18...................

19...................

20...................

21...................

22...................

93

24...................

25.....:.............

26...................

27...................

28...................

29...................

30...................

31

1908. 

1.. .................

2...................

3...................

4...................

5...................

6...................

7...................

0

|r------

10...................

11...... ............. 12........:..........

13...................

14...................

15...................

16...................

17...................

18...................

19...................

20...................

21...................

2S........ ...........

28

5*........,..........

35... ................

26........ ...........

27...................

28...................

29...................

30...................

31...................

Mar.

1.4

1.5

1.25

1.2

1.2

1.2

1.1

1.05

1.0

1.0

1.0

0.8

.8

.8

OK

.8

.8

.8

.75

.7

71

?<;

.757«;

.65

.55

.55

,55

Apr.

1.0

1.0

1.0

1.05

1.05

1.1

1.1

1.2

1.3

1.5

1.8

2.0

2.1

2.15

2.2

2.15

2.0

2.0

2.0

2.0

2.0

1.55

1.5

1.45

1.5

1.5 i <;

1.5

1.6

1.6

.55

.6

.65

.75

.75

.75

.75

.75

.75

.75

.75

.75

.8

.95

1.1

1 91

1.2

1 9S

1.25

1.15

1.45

1.5

1.35

1

0

1.25

1.2.

1.15

1.25

1.3

May.

1.55

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.45

1.65

1.9

1.75

1.65

1.6

1.75

2.05

2.2

2.45

2.8

3.0

 3.05

3.05

2.75

2.5

2.5

2.45

2.4

2.25

2.1

*> ni

1.4

1.65

1.75

1.5

1.8

1.7

1.3

1.55

1.65

1.5

1.55-

1.65

1.4

1.3

1.4

1.7

1.9

2.05

9 9

2.2

2.0

2.1

1.95

1.8

1

0

1 9

1

C

1.75

1.85

1 95

2.1

June.

2.0

2.15

2.45

2.7

2.9

3.0

3.0

2.95

2.75

2.7

2.9

3.0

3.1

3.1

3.2

3.15

3.0

3.0

2.85

2.7

2.7

2 7

2.9

2.95

3.05

3.15

3.25

3.25

2.05

2 9

2.35

2 OK

2.4

2.4

2 OK

2

1 K

2

KK

2

7K

2 a

9 7*.

2

7K

2

0

2

0

2 OK

2

7K

2.4

2

O

2 OK

2 OK

2 OK

2 25

*> OK.

2 *)K

2

K

2.5

2.4

2.2

2 05

July.

3.45

3.4

3.25

3.1

3.1

3.0

3.2

3.0

2.9

2.95

2.8

2.7

2.75

3.25

3.25

2.7

2.45

2.35

2.35

2.3

2.4.

2.3

2.25

2.25

2.35

2.15

2.15

1.95

1.95

2.0

1 9

2.0

1.85

1.85

1 ft

1.7

1 71

1.7

1

C

1.6

1.5

1.5

1.7

1.6

1.55

1.6

1.6

1.65

1.5

1

JK

1.4

1.35 i 3

1.55

1.5

1.55

1 9

1.15

1.15

1.1

1 9

1.3

Aug.

1.95

1.9

1.85

1.8

1.8

1.7

1.75

1.6

1.6

1.55

1.45

1.4

1.8

1.55

1.45

1.4

1.3

1.3

1.3

1.3

1.4

1.4

1 3

1.2

1.3

1.3

1.2

1.2

1.2

2.0

1.75

1.35

1.6 i <;

I

qc

1.25

1.15

1.1

1.15

1.1

1.1

1.15

i:i

1.0

1.15 1 9<;

1 9

1.7

1.35

1.4

1.4

1.5

1 45

1.4

1 9

1.15

1.1

1 05

1.0

1.0

1.0

Sept.

1.56

1.5

1.4

1.3

1.2

1.2

1.2

1.2

1.3

1.2

1.2

1.05

.95

.9

.9

.9

.9

.9

1.0

1.0

.9

.9

.8

.8

.8

.8

.7

.7

.7

.6

.9

.8

.85

.7

.7

.7

.6

.6

.6

.6

c

.5

.5

.6

.6

.6

.6

.5

.5

.5

.5

.5

.5

.5i >

1.0

.7

Oct.

0.6

.6

.6

.7

.7

.75

.8

.7

.7

.7

.7

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.5

.5

.5

.6

.6

.6

.6

.6

.6

.6

.7

.7

.7

.7

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.5fft

.6

.6

.6

.7

.7

.7

.7

.7

.6

.5

.5

.5

,5

.5

Nov.

0.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.4

.4

.4

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5.

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.6

.6

.6

.6

.6

.6

.6

Dec.

0.5

.5

.6

.6

.5

.5

.5

.6

.6

.6

.7

.7

.7

.7

.7

.7

. .7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

NOTE. Ice conditions begin November 23,1908. On December 1,1908, there was t.9 foot of ice at gage".
106 SURFACE WATER SUPPLY,

Rating table for Conejos River near Mogote, Colo.,for 1905 to 1908.

Gage

height.

Feet.

0.40

.50

.60

.70

.80

.90

1.00

1.10

1.20

Discharge.

Sec.-ft.

68

83

101

122

146

172

200

232

268

Gage

height.

Feet.

1.30

1.40

1.50

1.60

1.70

1.80

1.90

2.00

2.10

Discharge.

Sec.-ft.

308

353

403

458

518

583

653

728

810

Gage

height.

'Feet.

2.20

2.30

2.40

2.50

2.60

2.70

2.80

2.90

3.00

Discharge.

Sec.-ft.

900

1,000

1,110

1,230

1,360

1,500

1,650

1,810

1,980

Gage

height.

Feet.

3.20

3.40

3.60

3.80

4.00

4.20

Discharge.

Sec.-ft.

2,330

2,680

3,030

3,380

3,730

4,080

NOTE. The above table is not applicable for ice or obstructed-channel conditions. It is based on discharge measurements made during 1907 to 1908 and two measurements made in the first part of 1909 and 

is well defined between gage heights 0.4 foot and 2.5 feet. Above gage height 2.5 feet the curve is only 

approximate.

Monthly discharge of Conejos River near Mogote, Colo.,for 1905 to 1908. 

[Drainage area, 282 square miles.]

Month.

1905. 

May 4-31. ......................

July............................

1906. 

April 22-30. ....................

May............................

June 1-21.......................

The period ...............

1907. 

March 21-31 ....................

April...........................

July............................

October. .......................

The period ...............

1908. 

March 15-31.....................

April...........................

July............................

October. .......................

The period ...............

Discharge in second-feet.

Maximum.

2,680 

4,170 

690 

403 

112

653 

2,500 

3,290

403 

900 

2,070 

2,590 

2,770 

728 

430 

 146 

101 

122

159 

403 

900 

1,810 

728 

518 

268 

122 

 83

Minimum.

430 

769 

200 

83 

68

353 

353 

1,300

200 

200 

 353 

728 

653 

268 

101 

83 

68 

83

92 

92 

308 

769 

232 

172 

S3 

83 

80

Mean.

1,500 

2,160 

339 

190

87.8

543 

1,340 

2,480

263 

486 

848 

1,830 

1,520 

427 

216 

106 

82.7 

112

130 

- 219 £64 1,170 

432 288- 

118 

103 

82.2

Per 

square 

mile.

5.32 

7.66 

1.20 

.674 

.311

1.93 

4.75 

8.79

.933 

1.72 

3.01 

6.49 

5.39 

1.51 

.766 

.376 

.293 

.397

.461 

.777 

2.00 

4.15 

1.53 

1.02 

.418 

.365 

.191

Kun-ofl.

Depth in 

inches on 

drainage 

area.

5.54 

8.55 

1.38 

.78 

.35

.65 

5.48 

6.86

.38 

1.92 

3.47 

7.24 

6.21 

1.74 

.85 

.43 

.33 

.46

.29 

.87 

2.31 

4.63 

1.76 

1.18 

.47 

.42 

.21

Total in 

acre-feet.

83,300 

129,000 

20,800 

.11,700 

5,220

250,000

9,690 

82,400 

103,300

195,000

5,740 

28,900 

52,100 

109,000 

93,500 

26,300 

12,900 

6,520 

4,920 

6,890

347,000

4,380 

13^000 

34,700 

69,600 

26,600 

17,700 

7,020 

6,330 

4,890

184,000

Accuracy.

A. 

A. 

A. 

A. 

C.

A. 

A. 

B.

A. 

A. 

A. 

A. 

A. 

A. 

B. 

C. 

D. 

C.

C. 

B. 

A. 

A. 

A. 

A. 

C. 

C. 

D.

NOTE. Dfecharge estimated November 23-30, 1908. Values of accuracy for 1905 and 1906 are based on 

the assumption that the stream bed remained permanent.
SUEFACE ,WATER SUPPLY, 1907-8. 107

SANTA FE CREEK AT SANTA FE, N. MEX.

Santa Fe Creek rises on the range east of Santa Fe and flows westward over high plains to join the Rio Grande south of the Espanola 

Valley.

The gaging station, which was established May 31, 1907, to determine the amount of water available for irrigation and storage, is 

located at the Don Gaspar Avenue Bridge in the city of Santa Fe.

No important tributaries except intermittent streams enter below 

the station. The drainage area at the station is about 40 square 

miles, and at the mouth of the river it is about 300 square miles.

The reservoir for the Santa Fe municipal supply is situated in the 

canyon above the station, and a water-power plant of 100-horsepower 

capacity is used to develop power for lighting. Very little water is 

diverted for irrigation above the station. One small ditch takes 

water out just above. In the canyon 8 miles above Santa Fe is a 

reservoir site where 10,000 acre-feet can be stored.

Ice is usually to be found in the stream during the winter months, 

though the flow is very small during that period. The low-water flow 

is regulated to some extent by the waterworks reservoir above.

The gage datum was changed on August 13, 1908, and again on 

August 22, 1908. Results obtained at this station have been very 

unsatisfactory owing to the torrential character of the stream, the 

shifting nature of the bed, and the inadequate number of discharge 

measurements.

Discharge measurements of Santa Fe Creek at Santa Ft, N. Mex., in 1907 and 1908.

Date.

1907. 

May 31. ........

June 25.......

1908. 

May 23. .......

July 18. ........

Do........

Aug.17. ...... 

Aug. 19.. ......

Do.........

Aug. 20........

Aug. 21. .......

Nov. 24......

Hydrographer.

V.L.Sullivan .......................... .......

....do. .... .......................................

C.D. Miller.. ........................... .... .

R. L. Cooper.. ..................................... 

. . ..do.. ................................ ......

....do.............................................

...do.............................................

.....do...... ........................... .........

W. B. Freeman ...................................

Width.

Feel. 

12

7

12

11.5

16 

13

10

13

12.5

2

Area of 

section.

* ««

1.8

10.0

7.2

19 

11

12

13

9.4

.5

Gage 

height.

Feet. 

0.50

.17

.48

.55

.50

.20 

-.10

.05

.00

-.15

-.40

Discharge.

Sec.-ft. 

19.5

2.7

11.8

34.6

24.5

95 

33

38

52

30

.4

NOTE. Measurements in 1908 were made by wading.
108 SURFACE WATEB SUPPLY, 1907-8.

Daily gage height, in feet, of Santa Fe Creek at Santa Fe, N. Mex.,for 1907 and 1908.

[V. L. Sullivan, observer.]

Day.

1907.

1....

2....

3....

4....

5....

6....

7....

8....

9....

10....

11....

12....

13....

14....

15....

June.

0.49

.50

.50

.50

.50

.50

.52

.52

.50

.50

.48

.48

.45

45

.40

July.

0.00

.00

.00

.00

.00

.00

.00

.00

.05

.00

.05

.00

.00

.00

.00

Aug.

0.00

.00

.20

.10

.15

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

Sept.

0.60

.50

.55

.50

.40

.50

.40

.45

.42

.40

.30

.10

.00

.00

.00

Oct.

0.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

Nov.

0.05

.05

.05

.05

.05

.08

.08

.08

.08

.06

.06

.05

.05

.05

.08

Dec.

0.20

.30

.10

.08

.10

.15

.20

.20

.20

.25

.20

.20

.30

.30

.35

Day.

1907.

16....

17....

18....

19....

20. ...

21....

22....

23....

24....

25....

26....

27....

28....

29....

30. ...

31

June.

0.44

.44

.39

.45

.50

.40

.40

.35

.35

.28

.20

.15

.15

.10

.05

July.

0.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.00

.05

.05

.00

.00

Aug.

0.00

.00

.00

.05

.¥>

.00

.00

.00

.00

.00

.00

.00

.00

.00

,80

.60

Sept.

0.10

.00

.05

.00

.05

.02

.02

.00

 .00

.00

.00

.00

.00

.00

.00

Oct.

0.00

.00

.00

.00

.00

.05

.00

.00

.00

.00

.00

.00

.00

.02

.02

.02

Nov.

0.05

.05

.05

.06

.06

.05

.05

.10

.15

.15

.15

.18

.18

.20

.20

Dec.

0.30

.30

.30

.35

.35

.30

.25

.30

.25

.25

.25

.20

.20

25

.20

.25

[Avis Brumback and C. D. Miller, observers.]

Day.

1908. 

1.... ...........

2...............

3............... 

4...............

5...............

6............... 

7...............

8...............

Q

10...............

11...............

12...............

13...............

14...............

15...............

16............... 

17...............

18............... 

19

20...............

21............... 

22............... 

23............... 

24............... 

25...............

26............... 

27...............

28. ..............

29............... 

30............... 

31...............

Jan.

0.3

.35

.3 

.25

.3

.3 

.3

.3

.3

.25

.25

.25

.2

.25

.25

.2 

.2

.25 

.25

.2

.2 

.2 

.25 

.2 

,2

.1 

.1

.2

.2 

.2 

.2

Feb.

0.1

.1

.15

.1

.3 

.3

.25

.2

.2

.2

.2

.2

.2

.25

.25 

.1

.2 

.2

.15

.2 

.25 

.2 

.2 

.25

.2 

.3

.2

.25

Mar.

0.1

.2

.15 

.15

.2

.3 

.2

.05

95

05

95

.1

.2

.15

.0

.05 

.1

.05 

.0

.0

.0 

.0 

.0 

.0 

.0

.0 

.0

.0

.0 

.0 

.0

Apr.

..»_...

.......

" "6." 05 ~ 

.05 

.05 

.05

.1 

.15

.2

.0 

.0

May.

0.05

.0

.1

.25

.0 

.0

.0

.0

.0

.0

.2

.15

.0

.0 

.15

.15

.0

.0 

.35 

.55 

.4 

.3

.15 

.1

.15

.15 

.0 

.0

June.

0.4

.3 

.2

.25

.2 

.15

.15

.15

.0

.4

.3

.25

.0

.0

.3 

.25

.0 

.0

.0

.0 

.0 

.0 

.0 

.0

.0 

.1

.0

.0 

.0

July.

0.0

.0

.0 

.0

.0

.0 

.0

.0

.0

.0

.0

.0

.0

.0

1.0

.3

2.0

.3

.4 

.2 

.3 

.25

.2

.2

.1 

.2 

.35

Aug.

0.4

.7

.5

.3

.25 

.3

.4

.2

.2

.25

.25

1.5

1.5

.95

""."5"

.2

.0

.35 

.3 

.38 

.38

.1 

.0

.0

- .2 

- .1 

- .1

Sept.

-0.2

- .3

- .4

- .4 

 .4

- .5

.......

.......

-------

".'.'.".'.'.

Oct.

-0.4

- .4

-U4 

4

-.'.4 

-4*4

- .4

- .4

- .4

 .4

- .4

- .4

- .4

- .3 

.0 

- .1

 3

_ q

- .2 

.2

3

- .2 

- .3 

- .35

Nov.

-0.4

- .5

 .4 

- .4

- .5

- .4

- .4

- .4

4

- .4

- .4

- .4

- .4 

- .4 

 .4 

- .3

q

- .3

q

- .2

- .2 

- .2

Dec.

-0.2

_ 2

- .2

_ t 4

_ 4 

- '.5

- .5

.5

- .5

- .5

- .5

- .5

- .5

- .5

- .5

- .5

A

\ Mill

- .4

- .6

- .5 

- .5

0

NOTE. April 1-21,1908, no flow. All water diverted above gage for irrigation. Water standing in pools 

June 80-July 14,1908. Gage heights beginning A ugust 13,1908, refer to new gage. A^^*21, old gage read 

0.3 foot. September 9-30 no readings were made but a little water was flowing belovr f&«gage.
SUBFACE WATER SUPPLY, 1907-8. 109

MIMBRES RIVER NEAR FAYWOOD, N.'MEX.

The station, which was established April 23, 1908, is located about 

6 miles southeast of Faywood Hot Springs and 10 miles from Fay-' 

wood station on the Silver City branch of the Santa Fe Railway. 

The gage is located about 400 feet below the proposed Rio Mimbres 

reservoir dam site.

The data obtained here will show the amount of water available 

for storage. No important tributaries enter in the vicinity of the 

station, though numerous intermittent tributaries come in both 

above and below. The drainage area is about 450 square miles.

Some water is used for irrigation in the Mimbres Valley below the 

station, but as this is primarily a flood stream, and as storage has not 

been provided, such irrigation is uncertain. By storing the flood 

water and cutting off the underflow at the Rio Mimbres dam site, it 

will be possible to reclaim several thousand acres of land along this 

stream.

The flow of the stream at the gaging station is not usually affected 

by ice during the winter months. As the channel is very shifting in 

character, frequent measurements are necessary at high and medium 

stages to obtain the best results.

The datum of the gage has not been changed during the maintenance of the station. The present chain gage was installed on 

July 31, 1908.

Discharge measurements of Mimbres River near Faywood, N. Hex., in 1908.

Date.

May 12... ......

Jaly 31.. .......

Hydrographer. Width.

Feet. 

18

60

Area of 

section.

S«f.

21

Gage 

height.

Feet. 

0.00

.2fl

Discharge.

Sec.-ft. 

6.3

38
110 SURFACE WATEE SUPPLY, 1907-8.

Daily gage height,'in feet, of Mimbres River near Fay wood, N. Mex.,for 1908. 

[Ralph C. Trujillo, observer.]

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

May.

0.1

.1

o

9

.1

.1

.1

.1

.1

.1

.1

.0

.0

.0

.0

.0

.0

.0

.0.1

.1.1.1.1.1

.0

.0

.0

.0.0-

.0

June.

0.1

.1

.1

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

July.

0.0

.0

.0

.0

.0

.0

.0

.0.1

.2

.2

.1

.0 1.1

.2

1.3

.3

.3

.3

9

.1

.0

.0

1.5

1.1

1.7

1.5

1.3

.5

.2

Aug.

0.2

.6

.5

.3

.2

.1

.2

.2

.2

.2

.2

.1

.1

.1

.8

.5

.3

.2

.2

1.1

.2

.2

.2

.2

.3

2.3

.3

9

2.5

.3

Sept.

0.2

.2

1.5

.5

.2

.2

.2

9

.2

9

2

.2

.2

2

.2

.2

.3

.3

.2

.3

9

.3

.2

.2

.2

.3

9

.2

2

Oct.

0.2

.2

.3

.3

2

.3

.3

.3

.2

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.3

.3

.2

.2

2

.1

Nov.

0.1

.0

.0

.0

.0

.0

.0

.0

_ j

- .1

- .1

- .1

t _ 2

- .2

- .1

' .0

.0

- .1

- .1

.0

.0

.0

.0

- .1

- .1

- .1

_ J

- .1

- .1

_ 1

Dec.

-0.1

- .1

.0

.0

.0

.0

.0

.0

.0

.0

.0.1

.2

.2

.3

.2

.2

.2

.1

.1

.1

.1

.1

.2

.2

.2

.1

.1

.1

.1

NOTE. It is doubtful from tho observer's records whether gage heights November SKDecember 6 are 

plus or minus readings.

CAMERON CREEK AT FORT BAYARD, N. MEX.

This station, which was established on January 17, 1907, at the 

request of the United States Forest Service, to obtain data concerning 

flood run-off, is located near the pumping station at Fort Bayard, 

N. Mex., a United States Army post. The gage is a short distance 

above the crest of an old masonry dam, which was used to check the 

underflow of the creek.

For the greater part of the year the flow comes from springs, and 

amounts to less than 1 second-foot. Stephens Creek enters about 2 

miles above this station.

The intake for the water supply of the post is above the station, 

and a little water is also diverted above for garden irrigation. The 

flood waters of this stream can probably be stored in natural depressions in the vicinity, which will make excellent reservoir sites. These 

can be supplied by feeder canals.

Ice conditions do not appreciably effect the flow of the stream at 

this point. The channel has filled up with sediment above the dam, 

which probably has some effect on low-water measurements. The 

channel is probably permanent for measurements taken at higher
CAMEEON CREEK. Ill

stages. Unfortunately no high-water measurements have yet been 

made. The estimates of discharge given below are largely estimated. 

No change has been made in the datum of the gage during the maintenance of the station. Gage observations have been taken gratis 

by Sergt. T. J. McBurney, U. S. Army.

Discharge measurements of Cameron Creek at Fort Bayard, N. Mex., in 1907 and 1908.

Date.

1907. 

January 19..... 

Mav 14. ........

1908.

Hydrographer.

W. A. Lamb....................................... 

.... .do. .............................................

Width.

Feet. 

8 

2.5

Area of 

section.

Sq.ft. 

3.4 

.6

Gage 

height.

Feet. 

2.02 

1.75

1.45

Discharge.

Sec.-ft. 

« 14.0 

61.0

e.5

a Made by wading 300 feet above gage. b Made by floats near gage. Estimated.

Daily gage height, in feet, and discharge, in second-feet, of Cameron Creek at Fort Bayard, 

 N. Mex., for 1907 and 1908.

[Sergt. T. J. MeBurney, observer.]

Date.

1907.

January 20-24. .................

January 30-31 .................

Julv 1-10......................

July 11........................

July 12-20.....................

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

August 28. ....................

August 29-Deeember 31. .......

Gage 

height.

2.02

2.2

2.25

2.35

Discharge.

14.0

2.0

2.0

1.5

.5

2.5

.5

23.5

26.5 ' 32.0

.5

Date.

1908.

July 29. '......................

Gage 

height.

2.1

2.65

Discharge.

0.5

1.0

18.0

.5

.5

NOTE. The gage heights for low stages are not a true index of the discharge and henoe are not given. 

Discharges above 2.0 second-feet are estimated and are very approximate.

Monthly discharge of Cameron Creek at Fort Bayard, N. Mex., for 1907 and 1908.

Month.

1907.

May......................

July......................

Mean discharge in 

second-feet.

2.54

1.02

1.00

1.00

1.00

1.00

1.31

2.35

.50

.50

.50

.50

Run-off 

(total in 

acre-feet).

65.5

56.6

61.5

59.5

61.5

59.5

80.6

144

29.8

30.7

29.8

30.7

710

Month.

1908.

July......................

Mean discharge in 

second-feet.

0.50

.52

.50

.50

.50

.50

1.06

2.05

.50

.50 .50-

.50

.68

Run-off 

(total in 

acre-feet) .

30.7

29.9

30.7

29.8

30.7

29.8

65.2

126

29.8

30.7

29.8

30.7

494

NOTE. Monthly discharge, 1907 and 1908, approximate.
112 SURFACE WATER SUPPLY, 1907-8.

STEPHENS CREEK NEAR FORT BAYARD, N. MEX.

This station, which was established January 17,1907, at the request 

of the United States Forest Service, is located one-fourth mile above 

the Fort Bayard planting station of the Forest Service, 3 miles north 

of Fort Bayard.

The records furnish valuable information concerning normal and 

flood run-off. The station is situated about 2 miles above the junction of this stream with Cameron Creek.

The normal flow of this creek is very small, but for short periods 

during floods it occasionally carries a large flow, which can probably 

be stored. The intake for the water supply of the planting station 

is above the gage.

The records of this station are little, if any, affected by ice. The 

results obtained have not been very satisfactory, owing to the small 

number of discharge measurements, none of which were taken when 

there was any considerable flow in the stream.

No change has been made in the datum of the gage since the establishment of the station.

Discharge measurements of Stephens Creek near Fort Bayard, N. Mex., in 1907.

Date.

January 17..... 

May 14. ........

Hydrographer.

W. A. Lamb....................................... 

.....do..............................................

Width.

Feet. 

......3 

1

Area of 

section.

Sq.ft. 

0.9 

.1

Gage 

height.

Feet. 

1.30 

1.14

Discharge.

Sec.~ft. 

2.7 

a.J.

a Made by floats below gage.
8XH9DESS CHEEK. 113

Daily gage height, in feet, of Stephens Creek near Fort Bayard, N. Hex., for 1907 and 1908. 

[E. F. Hadtey aad Amos Hedricks, observers.]

- Day.

1907-a 

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

1908.6 

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

Jan.

1.30

1.18

1.18

1.17

1.17

1.17

1.17

1.17

1.17

1.19

1.18

1.17 

1.17 

1.19 

1.18 

1.18

1.18 

1.18 

1.18 

1.18 

1.18

1.18 

1.18 

1.18 

1.17 

1.17

1.18 

1.18 

1.17 

1.17 

1.17

1.17' 

1.17 

1.17

1.17 

1.18

1.18 

1.18 

1.17 

1.17 

1.17 

1.17

Feb.

1.18

1.18

1.18

1.18

1.17

1.17

1.17

1.17

1.17

1.18

1.18

1.18

1.18

1.17

1.17

1.18

1.18

1.17

1.17

1.16

1.16

1.16

1.17

1.17

1.17

1.17

1.18

1.17

1.17 

1.17 

1.17 

1.18 

1.18

1.17 

1.17 

1.18 

1.18 

1.18

1.18 

1.18 

1.16 

1.18 

1.19

1.18 

1.16 

1.16 

1.16 

1.16

1.16 

1.18 

1.18

1.18 

1.17

1.17

1.17 

1.16 

1.16

Mar.

1.17

1.16

1.15

1.1*

1.U

L15

1.16

1.17

1.17

1.15

1.16

1.16

1.16

1.16

1.16

1.16

1.16

1.16

1.16

1.16

1.17

1.16

1.16

1.16

1.16 

1.16 

1.16 

1.17 

1.16

1.16 

1.17 

1.17 

1.17 

1.17

1.17 

1.17 

1.16 

1.16 

1.16

1.16 

1.16 

1.16 

1.16 

1.17

1.17 

1.16 

1.16

1.16 

1.16

1.16 

1.17 

1.17 

1.16 

1.16 

1.16

Apr.

1.17

1.16

1.17

1.17

1.17

1.28

1.14

1.14

1.13

1.14

1.14

1.14

1.14

1.14

1.14

1.14

1.13

1.13

1.13

1.14

1.14

1.14

1.14

1.14

1.14

1.14

1.15

1.14

1.15 

1.14 

1.17 

1.16 

1.15

1.14 

1.L5 

1.15 

1.16 

1.15

1.15 

1.15 

1.14 

1.14 

1.14

1.16 

1.16 

1.16 

1.16 

1.15

1.16 

1.15 

1.17

1.16 

1.15

1.16 

1.16 

1.15 

1.15 

1.15

May,

1.14

1.14

1.14

1.14

1.14

1.14

1.15

1.14

1.14

1.14

1.14

1.14

1.14

1.15

1.15

1.15

1.15

1.15

1.15 11>?

1.14

1.15

1.15

1.15

1.15

1.16

1.16

1.20

1 19

1.15 

1.15 

1.17 

1.17 

1.16

1.16 

1.16 

1.16 

1.16 

1.16

1.16 

1.14 

1.16 

1.16 

1.15

1.16 

1.16 

1.16 

1.15 

1.16

1.16 

1.16 

1.17

1.16 

1.17

1.16 

1.16 

1.15 

1.16 

1.16 

1.15

June.

1.18

1 tR

ill

1.18

1.18

1.18

1.18

1.18

1.18

1.17

1.17

1.16

1.16

1.17

1.15

1.20

1.1&

1.17

1.19

1.18

1.18

1.18

1.18

1.17

1.18

1.12

1.13

1 1^

1.16

1.13 

1.13 

1.13 

1.13 

1.13

1.13 

1.13 

1.12 

1.12 

1.12

1.12 

1.12 

1.13 

1.12 

1.12

1.12 

1.12 

1.12 

1.12 

1.12

1.12 

1.11 

1.11

1.11 

1.11

1.11 

1.11 

1.11 

1.11 

1.11

July.

1.18

1.18

1 10

l.lf 1'%

1 la

1 IS

1.19

1.18

1.18

1.19

1.16

1.16

1.18

1.18

1 30

1.28

1.17

1.15

i i <;

1.15

1 i^

1.12

1 IQ

1.14

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

.00

.00 

.00 

.00 

.00 

1.12

1.32 

1.13 

1.13 

1.13 

1.13

1.13 

1.13

1 1Q

1.13 

1.13

1.13 

1.13 

1.13 

1.15 

1.13 

1.13

Aug.

1.15

1.14

1.14.

1.15

1.15

1.14

1.15

1,14

1 13

Ha

1.12

1.13

1.14

1.15

1.14

1.13

L14

1.14

1.15

1.19

1.16

1.17

1.17

1.16

1.16

1.17

1.62

1 19

1.18

1.17

1.16

1.13 

1.13 

1.13 

1.13 

1.13

1.14 

1.14 

1.14 

1.14 

1.14

1.14 

1.14 

1.14 

1.15 

1.15

1.15 

1.15 

1.15 

1.15 

1.26

1.25 

1.24 

1.24

1.24 

1.23

1.14 

1.14 

1.13 

1.13 

1.13 

1.13

Sept.

1.16

1.15

1.16

1.14

1.15

1.15

1.14

1.14

1.12 i n

1.13

1.13

1.13

1.18

1.15

1.16

1.15

1.16

1.16

1.17

1.17

1.17

1.16

1.16

1.15

1.15

1.14

1.14

1.15

1.14

1.15 

1.15 

1.19 

1.17 

1.17

Oct.

1.15

1.14

l.H

1.15

1.15

1.15

1.15

1.16

1.16

1.16

1.17

1.17

1.17

1.16

1.16

1.16

1.17

1.19

1.19

1.18

1.17

1.17

1.16

1.17

1.17

1.16

1.16

1.16

1.16

1.17

1.19

Nov.

1.18

1.17

1.17

1.17

1.16

1.17

1.17

1.19

1.17

1.17

1.18

1.17

1.17

1.17

1.16

1.16

1.17

1.17

1.18

1.18

1.17

1.17

1.17

1.17

1.17

1.18

1.17

1.16

1.17

1.18

:::::::

:::::::

Dec.

1.19

1.19

1.19

1.18

1.20

1.19

1.18

1.17

1.17

1.16

1.17

1.18

1.18

1.18

1.18

1.17

1.16

1.16

1.16

1.17

1.16

1.16

1.17

1.17

1.16

1.16

1.16

1.16

1.16

1.17

1.16

i

a Practically dry June 30-July 5, 1907.

6 During May and June, 1908, part of the flow was diverted for purposes of irrigation.

24440 IER 248 10 8
114 SURFACE WATER SUPPLY, 1907-8. 

PECOS RIVER DRAINAGE BASIN. 

DESCRIPTION.

Pecos River, the largest tributary of the Rio Grande, rises on the 

east side of the Santa Fe Range in northern New Mexico, flows south 

through eastern New Mexico, then southeast through southwestern 

Texas, and unites with the Rio Grande about 400 miles (by river) below 

El Paso. Except for some of the upper tributaries, the branches 

of .the Pecos are intermittent, carrying large floods at times. From 

source to mouth the river is about 800 miles long, and the total 

drainage area includes more than 32,000 square miles, of which 

23,000 are in New Mexico and 9,000 in Texas.

The upper Pecos flows as a typical mountain ' stream through 

narrow valleys and deeply cut gorges, but below Fort Sumner the 

canyon-like walls disappear and are replaced by low rolling hills, 

and when the river reaches Roswell the gradation from the flood 

plains to the prairie is imperceptible. Arroyos and gulches are 

rare and canyons are practically unknown. The mountain tributaries of the upper Pecos rise at an elevation of about 11,000 feet; 

at Santa Rosa, N. Mex., the elevation is 4,600 feet; at Roswell, 

3,500 feet; at Pecos, Tex., 2,550 feet, and at the mouth of the stream 

it is 1,000 feet.

The main Pecos may be said to. be formed by ^the junction of the 

Gallinas with the upper Pecos at La Junta, N. Mex. The most 

important tributaries below this point and above Roswell are the 

Agua Negra and the Agua Negra Chiquita, which enter just above 

Puerto de Luna. Except for small springs no important tributaries 

enter along this stretch, but some of the dry gulches and arroyos 

occasionally carry large quantities of flood water. Among the most 

important of the lower tributaries are the Hondo, Rio Felix, the 

Peiiasco, Seven Rivers, and Black River.

It is rather a striking fact that the Pecos receives practically no 

tributaries from the east, probably because of the pervious character 

of the soil of the Staked Plains, upon which there is no surface 

drainage system. The water sinks into limestone rocks and establishes an underground drainage.

The condition of the Pecos basin may be characterized roughly 

as follows: Merchantable timber land, 1,300 square miles; woodland, 2,400 square miles; 300 square miles of burnt and cut-over 

land, and the remaining area of about 27,000 square miles is open 

and sage-brush land.

The rainfall along the Pecos in New Mexico ranges from 20 to 25 

inches in the mountainous sections, as above Las Vegas and at 

Cloudcroft, to about 15 inches in the plains country, or in the vicinity 

of Roswell and Carlsbad. Through Texas the rainfall is light, the 

annual average being about 12 inches.
PECOS EIVEE DRAINAGE BASIN. 115

During the winter period the flow of the Pecos is supplied mainly 

by springs. The river has been known to go dry in the neighborhood of Colonias, N. Mex.

Considerable ice forms on the upper Pecos and heavy snows are 

common. In the vicinity of Santa Rosa and Fort Sumner thin ice and 

slush ice are in evidence during a part of the winter. Lower down 

the valley there is an occasional light snow, which disappears very 

quickly, and at times there is thin ice along the edges of the river. 

In the lower end of the valley the climate is mild. The rainfall 

comes mainly in the summer months in the form of showers, and is 

variable and uncertain.

Irrigation in New Mexico has reached its highest stage of development in the lower Pecos Valley, the irrigated district beginning a 

short distance above Roswell and continuing into Texas. Thousands of acres are under cultivation, and a wise and economical 

system of reservoirs and canals is in force. The surface waters have 

been greatly augmented during the past few years by numerous 

artesian wells. Above this fertile belt comparatively little farming 

is engaged in; below it irrigation is carried on only in a small way, 

as the return seepage water contains, unfortunately, a great percentage of alkali, which renders it undesirable for irrigation.

The recently completed Carlsbad and Hondo projects (Pis. IV 

and III, B] of the Reclamation Service provide for the irrigation of 

20,000 and 10,000 acres, respectively, while the proposed Urton 

Lake project, which is to be relinquished by the Reclamation Service 

in favor of a Carey Act project, will result in the irrigation of about 

60,000 acres in the vicinity of old Fort Sumner, N. Mex.

Numerous reservoir sites are to be found along the Pecos and its 

tributaries. Among the reservoirs now in operation may be mentioned Lake McMillan on the Pecos, and the Hondo reservoir on the 

Hondo River. Urton Lake, a natural depression in the vicinity of 

Fort Sumner, will have a storage capacity of 190,000 acre-feet. It 

is to be supplied by a feeder canal from the Pecos River. On account 

of the large amount of silt carried by this stream the prevention of 

its deposition must be taken into account and provided for in the 

construction of reservoirs.

On account of its long periods of low water, this stream does not 

offer many favorable opportunities for the development of power. 

At present there are no water-power plants of any importance in 

operation in the basin, except a public-utility plant of about 300 

horsepower at Carlsbad, N. Mex. Later there may be some power 

development in connection with irrigation projects.

The records along this stream are very fragmentary, and most of 

them were taken within the last five or six years. From them it 

would appear that 1903 was a very low year and 1905 an unusually 

high one.
116 SURFACE WATER SUPPLY, 1907-8.

Following is a list of gaging stations maintained in this drainage, 

together with the length of record:

Pecos River near Santa Rosa, N. Mex., 1903-1906.

Pecos River near Fort Sumner, N. Mex., 1904-1908.

Pecos River near Roswell, N. Mex., 1903-1906.

Pecos River near Dayton, N. Mex., 1905-1908.

Pecos River near Lakewood, N. Mex., 1906-1908.

Pecos River at Avalon, N. Mex., 1906-7

Pecos River at Carlsbad, N. Mex., 1903-1908.

Pecos River near Pecos, Tex., 1898-1907.

Marguerreta flume near Pecos, Tex., 1898, 1900-1907.

Pecos River near Moorhead, Tex., 1900-1908.

Pecos River at High Bridge, near Lozier, Tex., 1898.

Gallinas River near Las Vegas, N. Mex., 1903-1908.

Taylor Moore ditch near Roswell, N. Mex., 1905.

Hondo River below Hondo reservoir, N. Mex., 1903-1906.

Hondo reservoir inlet near Hondo reservoir, N. Mex., 1906-1908.

Hondo reservoir scour gate No. 1 near Hondo reservoir, N. Mex., 1906.

Hondo River near Roswell, N. Mex., 1903-1906.

Penasco River near Dayton, N. Mex., 1905-1908.

Lake McMillan at Lakewood, N. Mex., 1906-7.

PECOS RIVER NEAR FORT SUMNER, N. MEX.

The station, which was established on June 12, 1904, to determine 

the amount of water available for the Urton Lake project of the 

United States Reclamation Service, is located at a place known as 

Arinosa, about 12 miles northwest of old Fort Sunnier, N. Mex., and 

4 miles upstream from Fort Sumner, a station on the Belen cut-off of 

the Atchison, Topeka and Santa Fe Railway, and is near the site of 

the proposed diversion dam and a few miles below Arroyo Salada.

All the tributaries for a long distance above and below the station 

are intermittent in character, and only occasionally carry large 

amounts of water. The drainage area at the station is about 5,300 

square miles.

Some irrigation is practiced along the bottom land at various 

localities above the station, but not enough to materially affect the 

flow of the stream. The proposed Urton Lake project will divert a 

considerable portion of the stream flow at this point.

Slush ice sometimes forms at this station, and thin ice forms along 

the edges of the river, but results are not greatly affected by the ice 

conditions.

On July 5, 1905, the gage and station were moved downstream and 

a new gage established at the present datum. Otherwise there has 

been no change in datum.
U. S. GEOLOGICAL SURVEY WATER-SUPPLY PAPER 248 PLATE IV

w »* « ' a " * £ % i *

;-. -. , .*"'- , ', l \ 4-*1 ' ««. '-:

r \ - *k

A. LAKE McMILLAN RESERVOIR, CARLSBAD PROJECT, NEW MEXICO.

B. MAIN AVALON CANAL FROM HEAD-GATES OF AVALON DAM, CARLSBAD PROJECT, NEW

MEXICO.

PECOS EIVER DRAINAGE BASIN. 117

On account of the extremely shifting character of the channel, it is 

impossible to make reliable estimates of discharge unless very frequent 

gagings are taken. The funds available for 1907 and 1908 were 

entirely inadequate to permit any but very rough estimates of discharge for 1907, .and did not permit any estimates for 1908.

Discharge measurements of Pecos River near Fort Sumner, N. Mex., in 1907 and 1908.

Date.

1907.

April 16........

April 24. .......

May?.. ........

May 23. ........

1908. 

April 20........

Hydrographer.

W. A. Lamb. .......................................

.....do...............................................

.....do..............................................

.....do..............................................

.....do..............................................

.....do..............................................

.....do..............................................

.....do..............................................

V. L. Sullivan. .....................................

.....do..............................................

.....do..............................................

.....do..............................................

Width.

Feet. 

61

162

185

165

189

166

188

184

191

190

Area of 

section.

Sq.ft. 

49

67

146 i^t;

222

147

1 ^7

101

160

91 1

77

Gage 

height.

Feet.

2.03

2.40

2.35

2.20

2.30

2.70

Discharge.

Sec.-ft. 

93

86

390

365

633

483

503

117

«132

287

630

102

oMade 1 mile below gage.

Daily gage height, in feet, of Pecos River near Fort Sumner, N. Mex., for 1907 and 1908.

[J. C. Pacheco, observer.]

Day.

1907. 

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

Jan.

1.92

1.90

1.90

1.95

2.02

2.00

2.02

2.00

2.05

2.05

2.05

2.00

2.00

2.00

2.05

2.05

1.95

1.92

2.95

2.82

2.02

2.00

2.00

2.02

2.00

2.02

2.02

1.95

1.95

2.00

Feb.

2.02

2.02

2.02

2.00

2.05

2.02

2.00

2.00

2.00

2.02

2.00

2.05

2.05

2.05

2.02

2.00

2.02

2.02

2.12

2.12

2.12

2.12

2.15

2.10

2.10

2.15

2.10

Mar.

2.10

2.10

2.15

2.05

2.05

2.00

2.00

2.02

2.02

2.05

2.05

2.02

2.02

2.05

2.02

2.00

2.00

2.05

2.00

2.02

2.05

2.15

2.22-

2.00

Apr.

2.05

2.02

2.05

2.20

1.95

1.98

1.98

2.10

2.10

2.05

2.02

2.05

2.05

2.08

2.20

2.12

2.05

2.22

2.25

2

09

2.48

May.

2.35

2.25

2.35

2.30

2.32

2.35

2.35

2.48

2.32

2.42

2 CO

2.42

9 d.fi

2 en

2.32

2.42

2.42

2

QO

2 OK

2.52

June.

2.32

2.32

2.35

2

0C

2l 50

2.42

2.35

2.35

2.28

2 CO

2.45

9 09

2 on

2 no

2 99

2.20

July.

2.18

2.12

2.10

2.10

2.10

2.05

2.08

2.10

2.10

2.05

1 QK.

2.10

9 75

2 OK

2.10

2 1 ft

3 92

2 d.*\

1.95

Aug.

2.42

2.15

2.48

9 99

2.12

2 nn

1 Q9

1.90

1 90

1 99

1.92

1 99

1 99

2.25

2 on

2

9Q

2 1 ft

2

10

2 1 ft

2.45

9 92

2

99

2 99

2.35

Sept.

2.38

2

0e

9 J.9

2

00

2.30

2 49

2.42

2.42

2 J.fi

2

0fi

2.18

2.08

9 o§

9 99

2 19

2 19

2

ftQ

2 O1^

9 nn

2 19

2 2°

9 2°

2 in

Oct.

2.00

2 no

2 no

2.05

2.28

2.30

2 OO

2 OO

2 99

2 99

2 nn

2

oe

9 2^

2

Oe

2 99

2

09

2 1 9

2 6°

2.52

2

f\Q

2 no

2 1 K

2 19

2

fiC

2.03

Nov.

2.05

2.08

2 I9

9 1 ft

2 1 f\

2.10

2 15

2.12

9 Qg

9 99

9 95

9 2*>

9 95

2

QC

O Q9

2 qn

2.22

2 92

9 on

2 99

2 9t;

2 95

2 99

2 29

Dec.

2.20

2.20

2.22

2.22

2.25

2.25

2.22

2.25

2.22

2.20

2.20

2.22

2 22

2.25

2.25

2.25

2.25

2.20

2.32

2.25

2.20

2.25

2

OC

2 91

2.22
118 SUEFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Pecos River near Fort Sumner, N. Hex., etc. Continued.

Day.

1908. 

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

01

Jan.

2.3

2.3

2.3

2.3

2.35

2.3

2.3 

2.25 2 °

2.2

2 °

2 2

2.1

2.05

2.05

1 95

1.9

1.9

1.9

1.9

1.9

1.9

1.9

1.95

1.9

1.9

1.9

1.9

1.9

1 9

Feb.

1.9

1.95

2.05

2.15

2.05

2.0

2.0 

2.0

2.0

2.0

2.0

2.05

2.0

2.05

2.0

2.0

1.95

1.95

2.05

2.05

2.05

2.0

2.1

2.15

2.15

2.1

2.1

2.0

2.05

Mar.

2.05

2.0

2.1

2 1

2.1

2.1

2.15 

2.15

2.1

2.15

2.1

2.1

2.15

2.15

2.05

2.1

2.05

2.05

2.0

2.05

2.05

2.05

2.15

2.05

2.0

2.0

2.05

2.05

2.05

2.1

Apr.

2.1

2.1

2.15

2.1

2.1

2.1

2.1 

2.1

2.15

2.15

2.1

2.1

2.1

2.05

2.05

2.1

2.1

2.1

2.3

2.3

2.3

2.3

2 25

° 2

9 Q

2.45

2.4

2.3

May.

2.3

9 5

2.2

2.2

2.3

2.3

2 2

2.2

2.2

2.15

2.15

2.2

2.3

2.3

2.25

2.25

2.25

2.25

9 9

2.2

2.8

9 9

2.2

2.3

2.25

2.2

9 9

June.

2.15

2.2

2.25

2 2

2.15

2.15

2.1 

2.15

2.2

2.1

2.1

2.15

2.05

2.05

2.05

2.05

2.1

2.1

2.05

2.0

2.0

2.0

2.0

1.95

1.95

2.0

2.0

2.3

2.3

2.3

July.

2.2

2.55

2.2

2.1

2.05

2.0 

2.05

2.05

2.05

2.1

2.1

2.1

2.1

2 2

2.15

2.3

2.3

2.85

2.3

2.6

2.5

2.4

2.4

2.4

2.4

2.5

2.5

2.4

2.75

Aug.

2.5

2.85

2.9

2.8

2.75

2.7

2. 7 

3^1

3.0

2.55

2.4

2.5

3.0

3.1

2.65

2.5

2.5

2.6

4.95

3.2

3.25

2.6

2.0

2.05

2.05

2.4

2.4

2.5

2.0

Sept.

2:2

2.3

2.55

2.3

2.3

2.15 

2.1

2.0

2.05

2.0

2.0

2.0

2.0

2.0

2.1

2.05

2.1

2.0

2.15

2.0

2.0

2.15

2.1

2.2

2.1

Oct.

2.1

2.1

2.1

2.1

2.1

2.1

2.1 

2.2

9 2

2.2

2.25

2.2

2.2

9 2

9 9

2 2

2.2

2 2

2.15

2 2

2 2

2 2

2.25

2.25

9 9

2.25

2 °

2.2

2.2

2.2

2.2

Nov.

2.2

2.25

2.25

2.25

2.2

2.25

2.25 

2.2

2.2

2.2

2 2

9 2

2 25

2.25

2.25

2.25

2.25

2.25

2.2

2.2

2 25

2.25

2.25

2.25

2.2

2.25

2.25

2.25

2.25

2.3

Dec.

2.4

2.35

2.35

2.3

2.35

2.3

2.25 

2.3

2.3

2.35

2.3

2.3

2.35

2.3

9 9

2.2

2 2

2.25

2.2

2.25

2.25

2.3

2.3

2.3

2.3

2.35

2.3

2.35

2.35

O OE

Daily discharge, in second-feet, of Pecos River near Fort Sumner, N. Mex.,for 1907.

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

Jan.

45

40

40

50

65

60

65

60

75

75

75

60

60

60

7C

75

50

1,120

880

65

60

60

65

60

fie;

65

65

50

50

60

Feb.

65

65

65

60

75

65

60

60

60

65

60

7E

75

75

65

60

65

65

110

110

115

115

120

100

100

19C

105

85

Mar.

110

110

135

95

95

95

95

105

105

115

140

130

140

1XK

135

145

160

octn

ocn

qcn

on c

170

170

Apr.

215

200

215

345

160

175

175

265

280

220

220

300

070

300

97fi

C9A

340

470

520

May.

560

630

430

560

500

520

605

540

730

Cflft

600

940

760

580

550

660

700

540

540

540

520

7nn

June.

340

340

590

460

460

670

460

460

380

TOO

1,030

7 no

540

COf\

con

4*>Q

400

3SO

Qnn

July.

250

210

200

200

200

200

160

160

180

200

200

160

150

120

660

170

360

950

170

99O

100

Aug.

440

200

340

520

220

110

150

110

110

100

110

70

60

60

70

70

70

70

240

160

160

160

Qfin

180

180

180

270

Sept.

290

270

310

270

330

240

230

260

260

260

240

120

80

90

80

80

90

90

90

80

fin

60

60

60

90

1 if\

130

80

Oct.

60

60

60

70

70

160

180

130

130

130

150

60

70

150

1 fin

130

1,200

190

90

QCfl

80

60

100

Qft

70

60

Nov.

60

60

90

60

80

80

80

90

80

100

80

90

80

130

190

180

130

130

130

150

150

130

130

Dec.

120

120

130

130

150

150

130

150

150

130

120

120

130

150

130

150

1 tt(\

150

150

130

i ^n

1 on

190

150

120

i fin

150

1 fift

130

NOTE. The above discharges were obtained by the indirect method for shifting channels.
PECOS RIVEE DRAINAGE BASIN. 119

Monthly discharge of Pecos River near Fort Sumrter, N. Mex., for 1907.

Month.

April....................................................

Julv. .............. ^.... ..............................

Discharge in second-feet.

Maximum.

1,120 

125 

350 

520 

940 

1,070 

3,800 

980 

330 

1,200 

210 

190

3,800

Minimum.

40 

60 

95 

160 

420 

300 

100 

60 

60 

60 

60 

120

40

Mean.

121 

80.9 

171 

310 

590 

561 402-- 

201 

158 

164 

116 

140

251

Run-off 

(total in 

acre-feet).

7,440 

4,490 

10,500 

18,400 

36,300 

33,400 

24,700 

12,400 

9,400 

10, 100 

6,900 

8,610

183,000

NOTE. The above estimates are in general only approximate.

PECOS RIVER NEAR DAYTON, N. MEX.

This station, which was established March 24, 1905, has been 

maintained in connection with the Carlsbad irrigation project in 

New Mexico to determine the amount of water supplied by the river 

to the McMillan reservoir, and is located about 3 miles east of Dayton, 

N. Mex., about 6 miles above the dam of the reservoir, and approxmately 100 feet downstream from the mouth of Penasco River.

Considerable irrigation is practiced in the vicinity of Roswell, 

N. Mex., and opportunities for irrigation projects exist at various 

points above. The winters in this vicinity are comparatively mild, 

and ice does not appreciably affect stream flow.

The original gage was washed out on September 6, 1905, and was 

relocated September 7, 1905, at a point about one-half mile upstream. 

Otherwise there has been no change in gage datum. Fan- results 

can be obtained at this station if discharge measurements are taken 

at frequent intervals. This station was transferred March 31, 1908, 

to the United States Reclamation Service, by which discharge measurements have been made since.

Discharge measurements of Pecos River near Dayton, N. Mex., in 1907 and 1908.

Date.

1907. 

February 20....

March 27.......

April 26........

May 17. ........

May 31.........

June 28. ........

1908. 

April 15........

May 18.........

June 10........ .

July 23.........

Do.........

August 31 ......

Hydrographer.

W. A. Lamb......... .............................

.....do..............................................

.....do.............. ...............................

.....do............... ..............................

.....do..............................................

.....do..............................................

.....do..............................................

.....do..............................................

.....do..............................................

.....do..............................................

.....do..............................................

.....do..............................................

.....do....... ......................................

.....do..............................................

.....do........:.....................................

.....do..............................................

Width.

Feet. 

98

80

103

143

133

140

94

Area of 

section.

Sq.ft. 

239

97

196

261

233

212

182

Gage 

height.

Feet. 

3.10

2.05

3.37

3.70

3.65

3.30

3.40

2.20

2.00

1.80

4.60

4.60

5.70

6.30

5.40

3.90

3.80

Discharge.

Sec.-ft. 

338

104

351

479

467

323

321

124

90

70

46

964

945

2,630

3,190

1,560

350

301
120 SURFACE WATER SUPPLY, 1907-8.

Daify |)i£i tuight, in feet, ofPecos River near Dayton, N. Mex.,for 1907 and 1908. 

[Lemo Weddle and Eugene Lattlon, observers.]

Day.

1907. 

1....... ........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12............... 

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20 ... ....

22...............

23...............

25...............

26...............

27............... 

28...............

29...............

30...............

31...............

1908. 

1............... 9

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12. ..............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31

3a&.

3.2

3.1

3.1

3.4

3.2

3.2

3.1

3.0

3.3

3.5

3.5

3.4 

3.4

3.4

3.3

3.3

3.3

3.4

3.5

3.6

3.5

3.5

3.5 

3.5

3.4

 3.2

3.4 

3.4

3.2

3.2

3.2

3.5

3.6

3.5

3.4

3.6

3.5

3.5

3.5

3.6

3.5

3.8

3.5

3.7

3.6

3.6

3.4

3.6

3.7

3.2

3.4

3.3

3.4

3.5

3.4

3.4

3.5

3.3

3.4

3.3

3.1

3

0

Feb.

3.2

3.3

3.5

3.1

3.3

3.1

3.0

3.0

3.0

3.4

3.5

3.3 

3.2

3.1

3.5

3.4

3.4

3.0

3.9

3.1

3.1

3.0

3.0 

2.9

3.0

2.9

2.6 

2.6

3.2

3.2

3.3

3.2

3.4

3.3

3.3

3.4

3.5

3.5

3.5

3.4

3.4

3.5

3.5

3.5

3.4

3.0

2.9

2.8

2.8

2.8

2.9

2.6

2.8

2.7

2.6

2.6

2.6

Mar.

2.5

2.6

2.6

2.5

2.4

2.4

2 4

2.5

2.4

2.3

2.4

1.9

2.1

2.3

2.3

2.3

9 9

9 9

0

2.2

2.2

9 9

9 O

 1

2.0 

2.0

2.0

2.7

3.0

2.7

2.6

2.5

2.5

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.2

2.2

2.2

2 2

2.2

2.1

2.1

2.1

2.1

2.1

2.1

2.1

2.1

2.1

2 1

Apr.

2.8

2 9

2.8

2.9

2.6

2.5

O K

2.4

2.3

2.2

2.1

2.2

3.3

3.1

3.4 

3.5

3.4

3.3

3.3 

3.0

3.0

3.1

2.3

May.

3.1 "3.2

S.I

3.0

3.2

3.5

3.4

3.4

3.3

3.5

3.5

3.5

3.8

3.7

3.6

3.5

3.6

3.6

3.7

3.6

3.4

3.4

3.2 

3.1

3.0

3.2

3.4 

3.4

3.5

3.6

3.6

2.6

2.8

2.6

2.7

2.6

2.5

2 4

2.3

2.3

2.2

2.3

** 2

2.2

2.3

2.3

2.2

2 2

2.0

2.0

2 0

2.0

2.0

2.1

3.0

2.8

2.8

2.6

2 7

June.

4.0

3.8

3.7

3.8

3.8

3.8

3.7

3.6

3.9

3.9

3.9

4.0 

3.7

3.8

3.7

3.6

3.5

4.2

4.4

4.7

4 2

4.0 

3.9

3.5

3.4

3.4 

3.2

3.1

3.0

2.4

2.7

2.3

2.1

2 1

2.3

2.3

2.3

2.2

2.0

2.0

2.0

2.1

2.0

2.0

2.0

2.0

1.9

1.8

2.0

1.9

1.9

1.8

1.8 '2.5

2.4

2.4

2.0

1.8

1.7

July.

2.9

o 7

2.6

2.5

2.4

 > 9

0 9

0 9

o 1

2.0

4.0

3.7

3.2

2.9

2.7

2.5

2.4

3.9

4.9 

4.3

3.7

3.5

3.7 

3.7

3.6

7.0

5.3

2.2

2.0

2.0

2.7

4.6

4.7

4.5

4.0

3.0

3.0

2.7

2.7

2.5

2.5

2.7

2.3

2.3

2.3

2.3

5.6

3.9

4.6

4.6

4.6

4.0

3.6

3.4

3.3

3.0

2.9

3.8

Aug.

4.0

3.3

3.0

o 9

3.5

3.3

3.0

3.0

3.0

° 9

9 ft

2.7 

2.6

2.6

2.3

2.4

2 1

2.6

2.9

3.9

3.1 

4.9

4.3

3.8

3.4 

3.5

3.7

4.0

3.8

3.9

4.7

6.6

5.6

4.7

4.7

4.5

4.5

3.0

2.4

5.5

5.4

4.4

5.7

5.0

4.8

5.4

4.8

4.7

4.4

6.0

4.7

6.4

9.0

65.6

-5.4

4.7

4.7

4.7

4.1

3.9

Sept.

4.0

4.3

4.0

3.9

3.9

3.3

3.4

3.5

3.5

3.4

3.3

3.1 

2.9

2.9

2 7

2.7

2.7

2.6

2.5

2.5

2.6

2.6

2.7 

2.7

2.7

2.6

2.6 

2.5

2.1

2.2

4.5

5.5

4.9

4.6

4.1

4.3

4.0

3.9

3.7

3.7

3.7

3.5

3.3

3.1

3.3

3.2

3.1

3.2

3.0

2.9

2.8

2.8

2.9

2.7

2.7

2.7

2.8

2.7

3.1

2.7

Oct.

2.1

2.4

2.2

2.4,

2.2

2.2

2.3

2.3

?.3

2.5 

2.7

2.4

2.6

2.5

2.5

2.5

2.6

2.7

2.7

3.0

4.0 

3.8

4.0

4.2

4.4 

5.0

6.8

5.0

4.5

2.7

2.6

2.6

2.5

 2.5

.6

.7

7

7

2.6

2.5

2.5

2.4

2.6

2.6

2.6

2.5

2.5

3.7

2.7

2.5

2.6

2.6

2.5

2.5

2.5

3.0

3.0

Nov.

3.8

3.7

3.5

3.5

3.4

3.3

3.3

3.3

3.3

3.3

3.3

3.2 

3.2

3.4

3.2

3.3

3.5

4.0

4.0

4.1

4.1

3.7 

3.5

3.6

3.5

3.4 

3.3

3.2

3.8

3.0

3.0

3.0

3.0

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.3

3.3

' 3.3

3.3

3.6

3.7

3.6

3.6

3.5

3.5

3.5

3.6

3.8

Dec.

3.7

3.4

3.4

3.4

3.4

3.5

a8.5

3.6

3.5

3.4

3.2

3.5 

3.2

3.4

3.2

3.5

3.5

3.5

3.5

3.5

3.7

3.6

3.5 

3.5

3.5

3.6

3.6 

3.6

3.5

3.5

3.8

4.6

4.2

4.2

4.0

4.0

3.8

3.8

3.8

4.0

4.0

3.8

3.8 -4.0

4.0

4.0

4.0

4.0

3.8

3.8

3.7

3.7

3.7

3.8

3.9

4.0

4.0

3.9

3.9

3.9

3.9

a December 7,1907, gage height doubtful.

6 August 25,1908, gage height is mean of observer's reading and two separate readings by bydrographer 

made during the day.

NOTE. -Gage heights for April, 1908, are missing.
PECOS KIVEE DRAINAGE BASIN. 121

Rating tables for Pecos River near Dayton, N. Mex. 

JANUARY 1,1907, TO APRIL 20,1907.

Gage

height.

Feet.

1.90

2.00

2.10

2.20

2.30

2.40

Discharge.

Sec.-ft.

90

100

110

120

130

145

Gage

height.

Feet.

2.50

2.60

2.70

2.80

2.90

3.00

Discharge.

Sec.-ft.

165

185

205

235

275

315

Gage

height.

Feet.

3. 1C

3.20

3.30

3.40 

3.50

3. CO

Discharge.

Sec.-ft.

355

395

445

505

565

630

Gage

height.

Feet.

3.70

3.80

3.90

Discharge.

Sec.-ft.

695

765

835

NOTE. The above table is not applicable for ice or obstructed-channel conditions. It is based on 

two discharge measurements made during the above period and on the form of preceding curves. It is 

not well defined.

APRIL 21, 1907, TO DECEMBER 31, 1907.

2.00

2.10

2.20

2.30

2.40

2.50

2.60

2.70

2.80

73

80

87

95

105

115

125

140

160

2.90

3.00

3.10

3.20

3.30

3.40

3.50

3.60

3.70

185

210

240

270

300

340

380

430

480

3.80

3.90

4.00

4.10

4.20

4.30

4.40

4.50

4. tO

540

610

680

750

830

910

990

1080

1170

4.70

4.80

4.90

5.00

5.10

5.20

5.30

5.40

5.50

1260

1350

1450

1550

1650

1750

1860

1970

2080

NOTE. The above table is not applicable for ice or obstructed-channel conditions. It is based on five 

discharge measurements made during the above period and the form of the preceding curves. It is not 

well denned. Discharges above the limits of the rating table estimated.

Daily disdiarge, in second-feet, of Pecos River near Dayton, N. Mex., for 1908.

Day.

1..... ..........

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10. ..............

11...............

12

13...............

14...............

15...............

16...............

17...............

18............... 19........:......

20. ..............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

370

330

375

375

375

420

530

O7S

485

430

340

485

340

O«A

390

345

390

350

Olft

235

310

Feb.

275

275

315

275

310

310

360

410

415

420

360

360

425

425

430

375

220

190

170

170

170

120

140

125

125

125

Mar.

150

130

110

110

80

80

80

80

80

80

80

SO

80

80

80

80

70

70

70

70

70

60

60

60

60

65

65

65

65

65

65

Apr.

75

75

75

80

80

85

85

90

95

100

110

115

120

124

124

124

124

124

124

124

124

124 1°4

124

130

130

180

May.

135

1QA

250

190

220

160

135

115

115

95

115

115

95

95

110

110

90

110

90

65

65

65

80

330

250

ion

220

June.

125

Oft

125

125

125

70

70

70

90

70

70

70

70

60

46

70

60

46

175

150

70

46

40

July.

105

70

70

1,520

1,620

1,390

930

9on

175

165

110

100

140

60

50

45

1 950

i nno

965

330

250

220

140

410

Aug.

460

1 040

2,840

1,840

1,030

1,030

870

880

140

CA

1 830

1,780

2,140

1,380'

1 980

1,450

1 400

1,520

2

4QA

1,560

950

QCA

520

350

Sept.

680

750

440

545

390

260

260

260

200

105

125

125

OC

70

55

70

45

45

45

55

45

105

45

Oct.

45

35

35

30

Ort

30

35

45

45

4fi

45

35

35

30

Ort

28

35

35

30

260

45

30

OK

35

on

30

on

85

85

Nov.

85

85

85

85

-lots

125

125

125

125

125

125

125

125

125

125

125

125

150

150

*>Qn

230

oqn

200

200

200

oqn

300

Dec.

300

750

495

495

390

390

301

301

301

390

390

300

300

390

390

390

390

390

300

300

260

260

260

300

340

390

390

340

340

340

340

a. Estimated.

NOTE. These discharges were obtained by the indirect method for shifting channels. Discharge for 

April estimated.
122 SURFACE WATEE SUPPLY, 1907-8.

Monthly discharge of Pecos River near Dayton, N. Mex.,for 1907 and 1908.

Month.

1907.

April............................. ............ . ...

July...... ...........................................

1908.

May.................................................

July.................................................

Discharge in second-feet.

Maximum.

630 

835 

315 

380 

540 

1,260 

3,700 

1,450 

910 

3,450 

830 

2,000

3,700

530 

430 

150 

130 

330 

220 

1,950 

7,300 

1,520 

200 

300 

750

7,300

Minimum.

315 

185 

90 

110 

210 

210 

73 

80 

80 

80 

270 

270

80

' 235 

120 

60 

75 

65 

 40 

45 

50 

45 

28 

85 

200

28

Mean.

469 

395 

139 

210 

352 

562 

464 

335 

271 

446 

419 

425

374

373 

277 

78.7 

109 

138 

91.5 

478 

1,560 

271 

45.4 

155 

362

328

Run-off 

(total in 

acre-feet).

28, 800 

21,900 

8,500 

12,500 

21,600 

33,400 

28,500 

20,600 

16, 100 

27,400 

24,900 

26, 100

270,000

22,900 

15,900 

4,840 

6,490 

8,480 

5,440 

29,400 

95,900 

16, 100 

2,790 

9,220 

22,300

240,000

Accuracy.

B. 

B. 

C. 

D. 

B. 

C. 

C. 

C.

c. 

c.

c. 

c.

c. 

c. 

c. 

c.

B. 

B. 

C.

C.

c. 

c. 

c. 

c.

NOTE. Discharge estimated for July 30, October 29, and December 7, 1907, and August 24, 1908; also 

April, 1908.

PECOS RIVER NEAR LAKEWOOD, N. MEX.

The station, which was established January 11, 1906, and abandoned March 31, 1908, was located 3 miles southeast of Lakewood 

and one-half mile below McMillan reservoir dam (PL IV, A}.

The station was maintained in connection with the Carlsbad project of the United States Reclamation Service for the purpose of comparing the amount of water available at the McMillan reservoir with 

that below the Avalon dam. The record shows the discharge from 

the gates of the dam, but does not include the discharge from the 

spillway nor any leakage from the reservoir.

The present gage was established May 8, 1906. It had been previously moved from original location on.February 8, 1906.

Fair results can be obtained at this station if occasional discharge 

measurements are made at different stages.

Discharge measurements of Pccos River near Lakewood, N. Mex., in 1907.

Date.

May 17.........

June 28 ........

Hydrographer.

.....do..............................................

.....do..............................................

Width.

Feet. 

8.5

77

76

Area of 

section.

Sq.ft. 

6.4

142

119

Gage 

height.

Feet. 

0 19

ol.25

.90

Discharge.

Sec.-ft. 

11.9

23o

141

« Gage height recorded 1.75 feet by hydrographer; it is believed to have been in error 0.5 foot.
PECOS KIVEK DKAINAGE BASIN. 123

Daily gage height, in feet, of Pecos River near Lakewood, N. Mex., for 1907 and 1908.

[H. C. Halcomb, observer.]

Day.

1907. 

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

Day. Jan.

1908. 

1...... 1.6 

2...... 1.6 

3...... 1.6 

4...... 1.6 

ft...... 1.6

6...... 1.6 

7...... -1.6 

8...... 1.6 

9...... 1.6 

10...... 1.6

Jan.

0.1

.1

.1

.1

.1

1.75

2.38

2.98 

3.28

3.42

3.52

3.45

3.75

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15 

3.2

3.4

3.3

1.61

.1

Feb.

1.5 

1.4 

1.4

.8 

.8

.8 

.8 

.8 

.8 

.8

Feb.

0.2

.2

.2

.2

9

.2

.2

.2

1.44

2

0

9 7^

9

.2

9 

.2

.2

.2

.2

9

.2

.2

.98 

2.12

2

0

2.25

Mar.

0.

Mar.

1.22

2.3

9

.2

9

.2

.2

.2

9

9

.2

9

9

.2

.2

.2

.2

9

.2

9

9

.2

.2

9

.2

9

9

9

Da

19 

1 11.. 

1 12.. 

1 13.. 

1 14.. 

1 15..

1 16.. 

1 17.. 

1 18.. 

1 19.. 

1 20..

Apr.

9

2

9

9

9

2

9

2 

9

0

.2

9

.2

9

9

9

.55

.55

re

.55

.4

.4

.4

9

.2

9

y. J

38.

May

0.6

,6

.6

?,

?,

.6 

6

6

?, 0

1 4.

1,?,

1 ?,

1.6

?, 0

1 5

1 5

1 5

1 5

Q

.7 

7

.7

.7

.7

7

an.

1.6 

1.6 

1.6 

1.6 

1.55

1.55 

1.5 

1.5 

1.5 

1 5

June.

0.7

2.1

2.1

1.75

1.1

1.1

1.1 

1.1

.75

.75

.75

7K

7K

1.42

2.75

2.75

2 7

4.0

2.1

1.0

1.65 

1.65

1.6

1.25

g

g

Feb.

0.8

.8 

.8 

.8 

.8

'.22

'.22

.2

July.

0 9

1.15

1.4

1.12

.9

.9

.8

.8 

.8

.8

.8

.8

.8

.8

.8.'8

.8

.8

.8

.75 

.75

7C

.75

.75

3.1

4.7

Mar.

0.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

Aug.

1.4

1 i

1.3

1.3

1.3

1.3

1.3

1.3

1.15

1.0

1.0

1.0

1.12

1.25

1.25

1.25

1.0

1.0

1.0

1 05

3.0

1.2

1.2 

1.3

1 0

1.3

1.3

1.1

2.05

Daj

190S 

21... 

22... 

23... 

24... 

25...

26... 

27... 

28... 

29... 

30...

01

Sept.

2.55

1.8

1.8

1.8

1 Q

1.8

1.5

1.0

1.0

1.0

.7

.7

.7

.35

.35

.35

.35

.35

.35

.35

.35 

.35

.35

.35

.35

T. JE

.

Oc

0

1

1. 

1

?,

4

5.

5

5

n.

1.5 

1.5 

1.5 

1.5 

1.5

1.5 

1.5 

1.5 

1.5 

1 ft

1.5

t.

35

V, 35

V,

OK

35

35

35

35 

35

35

35

35

35

3

3

3

3

3

3

3

3

3

05

8 

8

?. <=>

6

6

?

I

Nov

4.7

,3 ?

 ?, 1

1 °-

1 4

1 5

1 5

1.6

1 6

1 6

1,6

1,6

1 6

1 6

1,6

1 6

1 6

1 6

1 7

1 7

1 8

1 9

1 9

1.9

1 R

1.R

1 R

1 8

1 8

'eb.

0.2 

'.2 2

.1 

.1

.1 

.1 

.1 

.1

"i

5

5

 i

5

5

"5

5

Dec.

1 s

1.8

i ?<;

1.75

1.75

1.7

1.7

1.65

1.65 

1.6

1.6

1.6

1.0

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.65

1.65

1.7 

1.7

1.7

1.7

1.7

1.7

1.7

Mar.

0.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

.1

Rating table for Pecos River near Lakewood, N. Mex., for January 1, 1907, to March'

31, 1908.

Gage 

height.

Feet.

0.10

.20

.30

.40

.50

.60

.70

.80

.90

1.00

1.10

Discharge. ,

Sec.-feet.

5

14

28

44

60

76

95

115

135

155

180

Gage 

height.

Feet.

1.20

1.30

1.40

1.50

1.60

1.70

1.80

1.90

2.00

2.10

2.20

Discharge.

Sec.-feet.

205

230

260

290

320

355

390

425

465

505

545

Gage 

height.

Feet.

2.30

2.40

2.50

2.60

2.70

2.80

2.90

3.00

3.20

3.40

3.60

Discharge.

Sec.-fetf.

585

630

675

720

765

810

855

905

1,005

1,105

1,210

Gage 

height.

Feet.

3.80

4.00

4.20

4.40

4.60

4.80

5.00

5.20

5.40

5.60

Discharge.

See.-feet.

1,320

1,430

1,540

1,660

1,780

1,900

2,025

2,155

2,285

2,415

NOTE. The above table is not applicable for ice or obstructed channel conditions. It is based on six 

discharge measurements made during 1906 and 1907, and is well defined. Above 1.6 feet it is the same as 

the rating table covering period May 8-December 31,1906.
124

Monthly

SURFACE WATEE SUPPLY, 1907-8.

of Pecos River near Lakewood, N. Mex., for 1907 and 1908.

Month.

1907.

April................................................

July............................................. ...

1908.

Discharge in second-feet.

Maximum.

1,290 

810 

577 

68 

465 

1,430 

1,840 

945 

698 

2,420 

1,840 

390

2,420

320 

290 

5

Minimum.

5 

14

14 

14 

14 

95 

105 

155 

36 

36 

245 

320

5

290 

5 

5

Mean.

364 

169 

56.9 

24. 2 

168 

417 

212 

268 

153 

354 

430 

342

247

305 

80.4 

5.0

Run-off 

(total in 

acre-feet).

22,400 

9,390 

3,500 

1,440 

10,300 

24, 800 

13, 000 

16,500 

9,100 

21,800 

25,600 

21,000

179,000

18,800 

4,620 

307

23,700

Accuracy.

A. 

B. 

B. 

C. 

B. 

A. 

B. 

B. 

B. 

A. 

A. 

A.

B. 

B. 

D.

PECOS RIVER AT AVALON, N. MEX.

The station, which was established on January 6, 1906, and maintained in connection with the Carlsbad project of the United States 

Reclamation Service, is situated just below the Avalon- dam, about 

6 miles north of Carlsbad, N. Mex.

The records at this point include the flow at Lakewdod, the flow 

of certain springs between the stations, the discharge of the spillways of the Lake McMillan dam, and that portion of the leakage 

through the gypsum in the bottom of the reservoir that returns to 

the river above Avalon.

The gage is about one-half mile below the dam and below the headgates of the main canal of the Carlsbad project (PI. IV, B), A 

large part of the 20,000 acres to be irrigated under that project was 

formerly under the system of the Pecos Irrigation Company.

Gage readings were discontinued on March 16, 1907. No change 

was made in the location or datum of the gage while it was in operation. Good results have been obtained at this station.

Discharge measurements of Pecos River at Avalon, N. Mex., in 1907.

Date.

Aprils.........

Hydrographer.

W. A. Lamb.......................................

.....do..............................................

Width.

Feet. 

67

30.7

Area of 

section.

* * 

28

Gage 

height.

Feet. 

0.96

2.10

Discharge.

Sec.-ft. 

206

77
PECOS RIVER DRAINAGE BASIN. 125

Daily gage height, in feet, ofPecos River at Avalon, N~. Mex.,for 1907. 

f W. A. Sewell, observer.]

Day.

1......

2......

5......

6......

7......

8......

S......

10......

Jan. Feb.

0 9

9

9

8

8

9

9

9

9

9

Mar.

ol.l

«1.9

0.2 2

1.0

1.0

.9

.9

.9

.9

.9

Day.

11......

12......

13......

15. . .

10. . .

17. , .

18. . .

19. . .

20. . .

Jan.

o2.5

1.0

.9

.9

.9

.9

Feb.

a 2. 5

a2.5

1.0

g

.9

9

.9

.9

.9

.8

Mar.

O n

9

9

9

.9

9

Day.

21......

22......

23......

24......

25......

26......

27......

28......

29......

30......

31......

Jan.

.9

.9

.8

.8

« 2.3

a, 2.4

a 2. 6

a2.5

1.0

.9

Feb.

0.8

9

9

9

o.9

2.0

2.0

2.0

Mar.

a Gage heights read when the gates at Lake McMillan were open; all others were read when the gates were 

closed.

Rating table for Pecos River at Avalon, N. Mex.,for January 1, 1906, to March 16,1907.

Gage

height.

Feet.

0.80

0.90

1.00

1.10

1.20 .

Discharge.

Sec.-ft.

150

180

215

260

310

Gago

height.

Feet.

1.30

1.40

1.50

1.60

1.70

Discharge.

Sec.-ft.

365

425

490

560

635

Gage

height.

Feet.

1.80

1.90

2.00

2.10

2.20

Discharge.

Sec.-ft.

720

810

905

1,005

1,105

Gage

height.

Feet.

2.30

2.40

2.50

2.60

Discharge.

Sec.-ft.

1,210

1,320

1,430

1,540

NOTE. The above table is based on discharge measurements made during the above period and is well 

defined between gage heights 0.7 foot and 2.75 feet.

Monthly discharge of Pecos River at Avalon, N. Mex.,for 1907.

Month.

March 1-16................................. .. .

The period ....................................

Discharge in second-feet.

Maximum.

1,540 

1,430 

1,100

Minimum.

150 

150 

180

Mean.

648 

344 

286

Run-off 

(total in 

acre-feet).

27,000 

19,100 

.. 9,080

55,200

Accuracy.

A. 

A.

A.

PECOS RIVER AT CARLSBAD, N. MEX.

This station, which was established May 20, 1903, was located at 

the Green Street Bridge, Carlsbad, N. Mex., and about 500 feet below 

the station of the Pecos Valley and Northeastern Railway. Gage 

observations were discontinued on March 31, 1908. This bridge 

and the original gage were washed away in October^ 1904. The 

station was 2,000 feet below the Hagerman power dam.

The Avalon reservoir, from which the main canal of the Carlsbad 

project is diverted, is located a few miles upstream from this station. 

Records have been maintained for the United States Reclamation 

Service.

The gage datum was unchanged during the maintainance of the 

station..
126 SUEFACE WATER SUPPLY, 1907-8.

Fair results were obtained at this station, except at low-water 

stages, when the rough nature of the stream bed has interfered with 

the accuracy of measurements. Insufficient measurements were made 

during 1907-8 to warrant the publication of monthly discharge.

Discharge measurements of Pecos River at Carlsbad, N. Mex., in 1907.

Date.

February 28. ...

Mayl..........

Hydrographer.

W . A. Lamb .......................................

.....do.... ..........................................

..... do.. ............................................

.....do..............................................

Width.

Feet. 

76

255

60

44

Area of 

section.

Sq.ft. 

106

1,610

48

44

Gage 

height.

Feet. 

1.18

1.95

.95

.84

Discharge.

Sec.-ft.

805

86

a Made by wading 30 feet above gage.

Daily gage height, infect, of Pecos River at Carlsbad, N. Mex., for 1907 and 1908. 

[J. W. Lewis, observer.]

D

1£ 

1......

2......

3......

4......

5......

6......

7......

8......

Q

10. .....

11......

12......

13......

14. .....

15......

16......

17......

18. .....

19. .....

20......

21......

22. .....

23......

24...... 

25......

26. .....

27......

28......

29......

30. .....

01

Day.

1908. 

1. . . 

 2. . . 

3. . . 

4. . . 

5. . .

6. . . 

7. . . 

8. . .. 

9. ... 10. ...

ay.

07.

-

Jan.

1.50 

1.50 

1.50 

1.50 

1.50

1.50 

1.50 

1.50 

1.50 

1.50

Jan.

1,12

1.13

1.14

1.14

1.14

1.18

1.58

1.88

2.45

2.45

2.52

2.58

2.60

2.30

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.24

1.25 

2.40

2.44

2.50

2.45

1.95

1.22

Feb.

1.50 

1.50 

1.50 

1.50 

1.50

1.40 

1.40 

1.40 

1.35

Feb.

1.20

1.20

1.20

1.19

1.18

1.18

1.18

1.18

1.18

2.18

2.20

2.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20 

1.20

1.78

1.80

1 91

Mar.

1.2 

1.2 

1.2 

1.2 

1.1

1.0 

1.0 

1.0 

1.0

Mar.

1.20

1.90

1.90

1.30

1.20

1.20

1.20

1.20

1.22

1.20

1.19

1.18

1.18

1.18

1.18

1.18

1.18

1.18

1.18

1.18

1.18

1.18

1.00

1.00 

.80

.95

1.10

.89

.899°

DE

1' 

0 11. 

0 12. 

0 13. 

0 14. 

0 15.

0 16. 

0 17. 

0 18. 

0 19. 

0 20.

Apr.

1.04

1.05

1.00

1.00

1.00

.97

.95

.98

OS

.96

.86

.80

.80

.62

.67

.85

.72

.70

.70

.68

.66

.68

.68

.72 

.70

.70

.70

.70

.70

.70

*y. -J

)08.

May

0.7

.7

.7

r

.7

.7

.71

7f

8, 1 4C

1 3-J

i,r

i.if

1 V

i \r

i,tf 1.4"

1 5r

1 51

1 41

1.1J 

.91

.Sf

.W

.7t

.W9r

,«f

an.

1.50 

1.50 

1.50 

1.50 

1.50

1.50 

1.50 

1.50 

1.50 

1 . SO

>

>,

)

)

>:

T

?

>

)

?

'

i 

)

>

i

«

>

>

June.

0.82

.93

1.48

1.52

1.53

1.34

1.14

.90

.70

60

.63

.23

.64

1.33

1.34

1.95

1 96

1.99

2 22

2.64

1.85

1.28 

1 68

1.40

1.51

1.37

1.08

91

Feb.

1.30 

1.25 

1.25 

1.25 

1.20

1.00 

1.00 

1.00 

1.10 

1 °0

July.

0.84

.82

.80

.86

1.14

1.17

.96

.98

.98

.96

.94

.92

.90

.90

.90

.90

.91

.91

.91

.94

.95

.95

.95

.95 

.95

.95

.95

.95

.92

.92

2.38

Mar.

0.90 

.90 

.90 

.90 

.80

.80 

.70 

..70 

.70 

.70

Aug.

2.98

2 12

1.25

1.20

1.20

1.19

1.18

1.18

1.40

1.43

1.40

1.38

1.35

1.18

97

.95

.95

.90

.88

.75

.66

.62

.66 

.86

.96

.99

1.10

1.00

1.00

1.28

Daj

19t 

21...

223!]" 

24... 

25...

26... 

27... 

28... 

29...

Oft

31...

Sept.

1.60

1.45

1.52

1.52

1.39

1.20

1.20

1.15

1.25

1.00

1.35

.96

.98

1.00

1.00

1.00

.98

.88 

.85

.85

.86

.92

.88

.85

7. Ja

)8 

. . 1 

. . 1 

1 

1 

1

1 

1 

1 

1 

1

1

Oc

0.

.

.

?

1

i"

1

1

3

3

3.

n.

.50 

.50 

.48 

.48 

.45

.48 

.48 

.50 

.50 

.50

50

t.

3<i

«

W

^5

*n

w

n

M

W

W

W

m

10

17

16

13

W

*1

W

0

W

10 

W

>4

(8

id

Wm

W

I

Nov

3 4

2.8i

1 8

1 ^

l.G

1,4

1.4

14

1.4

1 4

1 4

1,5

1 4

1 4

1 4

1.5

1.5<

1 5

1 5

1.6

l.fi

1,6

1 6

1,6. i.ai.a

1 6(

>b.

1.30 

1.30 

1.30 

1.30 

1.30

1.30 

1.30 

1.25 

1.25

1

*

}

1

}

i

*

?

}

)

*

7

\

>,

1 

}

1

1

1

)

Dec.

1.58

 1.58

1.58

1.58

1.58

1.55

1.52

1.52

1.62

1 60

1.60

1.59

1.52

1.48

1.48

1.48

1.48

1.48

1.48

1.48

1.48

1.48 

1.48

1.4S

1.48

1.48

1.48

1.50

Mar.

0.70 

.70 

.70 

.70 

.70

.70 

.70 

.70 

.70 

.70

.70

NOTE. Beginning February 11,1908, water held back at Lake McMillan for storage.
PECOS RIVER DRAINAGE BASIN. 127

PECOS RIVER AND MARGUERETTA FLUME NEAR PECOS, TEX.

This station, which was established on January 1, 1898, and discontinued on June 30, 1907, is located at the flume of the Barstow 

Irrigation Company (old Margueretta Canal Company). The canal 

diverts water from the west side of Pecos River about 3 miles upstream from this flume, which carries the water across to the east side 

of the river. The flume is a timber structure supported on pile bents. 

About 10 second-feet are diverted into the West Valley ditch before 

the canal crosses the river. The gage in the flume is at the east end 

and its zero is at the bottom of the flume. This gage registers amount 

of water used for irrigation on east side of river.

The gaging station on the river shows the amount of water in the 

river below the canal. The gage is nailed to one of the piles supporting the flume, and discharge measurements are taken 200 yards downstream.

No change has been made in the datum or position of this gage 

since its establishment. Flood measurements have been made at a 

highway bridge east of Pecos. The channel is shifting, and the regularity of the flow is considerably affected by the pile supports of the 

flume.

One measurement was made in the flume in 1899. Daily gage 

readings, however, were not begun until January 1, 1900.

Discharge measurements of Pecos River near Pecos, Tex., in 1907.

Date.

March 29.......

April 29........

Ilydrographer.

.....do..............................................

.....do..............................................

.....do..............................................

.....do..............................................

Width.

Feet. 

173

127

105

39

20

Area of 

section.

Sq.ft. 

419

175

160

44

6

Gage 

height.

Feet. 

4.10

2.00

1.85

.65

.10

Discharge.

Sec.-ft. 

1,250

301

282

35

2.9

Mean daily gage height, in feet, of Pecos River near Pecos, Tex., for 1907. 

[Lawrence Vaneter, observer.]

Day.

1.. ........

2... .......

3:.........

4..........

5..........

6..........

7.......... 

8..........

9..........

10.......... 

11..........

12..........

13..........

14..........

15. .........

Jan.

1.8

1.7

1.7

1.7

1.7

1.7

1.7 

1.7

1.9

2.85 

3.35

3.6

3.85

4.05

4.05

Feb.

2.8

2.2

2.1

2.0

2.0

2.0

2.0 

1.9

1.9

1.8 

1.8

1.8

3.2

3.3

2.6

Mar.

2.7

2.8

2.6

2.4

2.85

2.55

1.9 

1.6

1.6

1.5 

1.5

1.45

1.4

1.25

1.1

Apr.

0.5

.5

.6

.6

.5 

.5

.5

.4

.4

.3

.3

May.

0.1

.1

.1

.1

.1

.1 

.1

.1

.1

.1

.1

.1

.1

June.

0.3

9

.2

.2

1.35 

1.6

1.2

1.2 

9

.8

.5

.85

1.0

Day.

16..........

17..........

18..........

19..........

20. .........

21..........

22.......... 

23..........

24. .........

25. ......... 

26. .........

27..........

28..........

29

30..........

31..........

Jan.

2 7

2.3

2.1

9 (1

2.0 

2.0

2.0

2.0 

2.0

1.9

2.7

3.8

3.8

3.6

Feb.

2.3

2.1

2.0

1.95

1.8

1.8

1.8 

1.8

1.8

1.8 

1.7

1.7

1.65

Mar.

1.1

1.1

1.1

1.1

1.1

1.1

1.0 

.9

.8

.8 

.8

.65

.6

.6

.5

.5

Apr.

0.3

.3

.3

.2

.2

.2

.2 

.1

.1

.1 

.1

.1

.1

.1

.1

May.

0.1

.7

.7

.7

.7

.7

.8 

1.05

1.2

1.2 

1.15

1.0

.8

.8

.3

June.

0.9

1.0

1.3

2.65

2.8

2 95

3.25 

3.55

3.15

3.05 

1.4

1.2

1.75

1.55

1.5
128 SURFACE WATER SUPPLY, 1907-8. 

Rating table for Pecos River near Pecos, Tex.,for January 1, 1907, to June SO, 1907»

Gage 

height.

Feet.

0.10

.20

.30

.40

.50

.60

.70

.80

.90

Discharge.

Sec.-ft.

3

fi

10

15

20

30

40

50

05

1.00 ! 80

1.10 95

Gage 

height.

Feet.

1.20

1.30

1.40

1.50

1.60

1.70

1.80

1 90

2 00

2.10

2.20

Discharge.

Sec.-ft.

110

130

150

175

200

225

250

280

310

340

370

Gage 

height.

Feet.

2.30

2.40

2.50

2.60

2.70

2.80

2.90

3.00

3.10

3.20

3.30

Discharge.

Sec.-ft.

405

440

475

510

550

590

630

670

715

760

805

Gage 

height.

Feet.

3.40

3.50

3.60

3.70

3.80

3.90

4.00

4 20

Discharge.

Sec.-ft.

850

900

950

1,005

1,060

1,115

1,170

1,290

NOTE. The above table is not applicable for ice or obstructed-channel conditions. It is based on 15 

discharge measurements made during 1906 and 1907 and is well denned.

Monthly discharge of Pecos River near Pecos, Tex., for 1907.

Month.

Discharge in second-feet.

Maximum.

1,200 

805 

610 

30 

110 

925

Minimum.

225 

212 

20 

3 

3 

6

Mean.

531 

337 

185 

12.3 

29.9 

231

Run-off 

(total in 

acre-feet).

32,600 

18,700 

11,400 

732 

1,840 

13, 700

79,000

Accuracy.

A. 

A. 

A. 

B. 

A. 

A.

Discharge measurements of Margueretta flume near Pecos, Tex., in 1907.

Date.

February 21.... 

March 29.......

April 29........

May 16. ........

Hydrographer.

W. A. Lamb ...............'........................ 

.....do..............................................

.....do..............................................

.....do..............................................

Width.

Feet. 

20 

20

20

20

Area of 

section.

sq .ft

y. o

52

39

43

Gage 

height.

Feet. 

0.71 

2.55

1.90

2.12

Discharge.

Sec.-ft. 

a!4.4 

125

67

57

o Channel obstructed by sand bar and drift.

Daily gage height, in feet, of Margueretta flume near Pecos, Tex., for 1907. 

[Lawrence Vaneter, observer.]

Day.

1... .......

2 

3.......... 

4..........

6.......... 

7..........

8..........

9.......... 

10..........

11.......... 

12.......... 

13..........

 14.......... 

15..........

Jan.

0.4

.4 

.4 

.4

.4 

.4

.4

.4 

.4

.4 

.4

.4 

.4

Feb.

0.4

.4 

.4

.4

.5

.5

.5 

.5

.5 

.5 

.6

.6 

.6

Mar.

2.3

2.3 

2.3 

2.3

2.3

2.15 

2.0

2.2

2 2 9 ->

2. 2 

2! 5

2.6 

2.6

Apr.

H2. 6

2.6

2.5

£3

2.3

2.2

2 1 

2^1

2.3 

2.3

May.

1 Q

1.9 

1.85 

1.8

I Q

1.8 

1.7

1.7

1.7

1.3 

1.4

1.4 

2.0

Jun?.

2. 2 

2. 2 

22

2.2

2 7

2.6 

2.5

2. 4 

2. 4

2.55 

2.7

Day.

16..........

17.......... 

18.......... 

19

9ft

21..........

23..........

24.......... 

25. .........

26.......... 

27.. ........

OQ

29.......... 

30.......... 

31..........

Jan.

.4

.4

.4

.4 

.4

.4 

.4

.4 

.4

.4

Feb.

.4 

.6 

.6

.6

.7 

.7

.7 

.7

.7 

1.0 

1.8

Mar.

2.6

2.7 

2.7

0 7

2.7

2.7

2 7

2.7 

2.7

2.6 

2.5

2

C

2.5 

2.5 

2.5

Apr.

2.3

2.2 

2 2 

2!l

2.1

2.1

2.2

2.3

2.4 

2.4 

2.3

2.1 

2.0

May.

2.3

2.4 

2.4 

2.4

2.4

2.5

2.5

9 1

2. 4 

2.4

2.0 

2.0 

2.0

June.

2.7

2.7 

2.6 

2.5

2.5

2.6

2.7

2.8

2.7

9 7

2.7 

2.5 

2.6

2.7 

2.65
PECOS RIVER DRAINAGE BASIN. 129

Rating tables for Margueretta flume near Pecos, Tex.

JANUARY 1, 1907, TO FEBRUARY 27, 1907.

Gage

height.

Feet.

0.40

.50

.60

,70

Discharge.

Sec.-ft.

2

6

10

14

Gage

height.

Feet.

0.80

.90

1.00

Discharge.

Sec.-ft.

19

25

31

NOTE. The above table is not applicable for ice or obstructed-channel conditions. It is based on one 

discharge measurement made during the above period and the shape of previous low-water curves. It is 

only approximate.

EFBRUARY 28, 1907, TO APRIL 30, 1907.

1.80

1.90

2.00

2.10

2.20

59

67

75

84

93

2.30

2.40

2.50

2. 60

2.70

102

111

120

130

140

NOTE. The above table is not applicable for ice or obstructed-channel conditions. It is based on two 

discharge, measurements made during the above period. It is only approximate.

MAY 1, 1907, TO MAY 15, 1907.

[Indirect method for shifting channels used.]

MAY 16, 1907, TO JUNE 30, 1907.

2.00

2.10

2.20

2.30

2.40

49

56

64

72

80

2.50

2.60

2.70

2.80

89

98

108

118

N OTE. The above table is not applicable for obstructed-channel conditions. It is based on one discharge 

measurement made during the above period and the form of the preceding curve. It is only approximate.

Daily discharge, in second-feet, of Margueretta flume near Pecos, Tex., May 1-15, 1907.

Day.

1... ...........

2..............

3..............

4..............

May.

65

64

58

53

Day.

5..............

7..............

8..............

May.

51

t;n

42

41

Day.

9..............

10.............

May.

40

26

22

24

Day.

13.............

14.............

15.............

May.

23

23

50

NOTE. These discharges were obtained by the indirect method for shifting channels.

Monthly discharge of Margueretta flume near Pecos, Tex., for 1907.

Month.

April................................................

May.................................................

Discharge in second-feet.

Maximum.

2 

59 

140 

130 

108 

118

Minimum.

2 

2 

75 

75 

22 

49

Mean.

2.00 

10.3 

117 

99.7 

59.7 

91.1

Run-off 

(total in 

acre-feet).

123 

572 

7,190 

5,930 

3,670 

5,420

22,900

Accuracy.

D. 

D. 

C. 

B. 

C. 

D.

24440 IRE 248 10 9
130 SURFACE WATER SUPPLY, 1907-8.

PECOS RIVER NEAR MOORHEAD, TEX.

The station, which was established by the International Boundary 

Commission in April, 1900, is near Moorhead, immediately above the 

high bridge of the Southern Pacific Railroad.

The station is in the bottom of a canyon about 300 feet deep. 

Both banks are of rock, but the bottom of the stream is mud. The 

river here consists of a series of pools connected by rapids. The 

best pool was chosen for the station. Frequent discharge measurements are made to determine closely the daily discharge. The 

highest known flood occurred April 6, 1900, about two weeks before 

this gage was established. The water marks showed that it reached 

35.75 feet on the gage.

The observations at this station during 1907-8 have been made 

under the direction of the United States section of the International 

Boundary Commission.

Discharge measurements of Pecos River near Moorhead, Tex., in 1907. 

[By E. E. Winter, D. J. Smith, I. P. Whitis, and W. H. Dodd.]

Date.

March 12...........

April 16. ...........

April 21............

April 29..... .......

MaylS.............

May 17. ............

June 12............

Area of 

section.

* $,

728

735

726

71S

719

681

671

706

711

684

685

698

696

686

67S

661

668

634

630

610

610

614

609

626

613

613

611

605

603

593

613

597

593

Gage 

height.

Feet.

1.6

1.6

1.6

9 Q

1.75

1.7

1.55

1.7

1.7

1.55

1.7

1.6

1.55

1 4

1.3

1.2

1.1

1.0

95

9

.9

.9

.9

.9

.85

.8

.8

.8

.8

.8

.65

Discharge.

Sec.-ft. 

555

533

COJ.

543

603

584

518

651

525

fifid.

619

521

484

524

531

498

474

475

467

467

464

430

417

413

407

434

442

428

427

420

418

400

400

392

393

387

Date.

June 23............

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

July 12... ..........

July 17.... .........

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

July 26.............

August 29..........

October I9

Area of 

section.

Sq.ft. 

760

624

601

690

651

659

658

657

657

642

642

652

638

619

637

627

666

643

649

615

610

666

706

684

652

802

987

860

790

766

752

774

' 782

756

741

733

738

Gage 

height.

Feet. 

2.0

.9

.8

.9

.6

.6

.55

.55

.55

.45

.45

.65

.45

.45

.4

.4

.4

.4

.6

.7

.85

1.3

1.5

1.2

1.1

2.5

4.2

2.7

2.3

2.1

2.0

2.0

2.15

2.1

1.9

1.95

1.9

Discharge.

Sec.-ft. 

718

437

408

285

230

253

250

251

271

246

251

260

280

252

257

250

251

243

180

265

516

568

443

407

1,231

2,877

1,517

1,108

934

1,001

1,005

889

802

848

831

Measurement made August 13,1907, considered too small and hence rejected.
PECOS RIVER DRAINAGE BASIN. 131

D'ischarge measurements of Pecos River near Moorhead, Tex., in 1908. 

[By W. H. Dodd and E. E. Winter.]

Date.

March 2............

March 11, .......... 

March 16. .........

March 19...........

March 23...........

March 28. ..........

April 9. ............

April 13............

April 17............

April 21... .........

April 25. ...........

April 28. ...........

May 4..............

MayS..............

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

May 16..... ........

May 25. ............

May 29...... ........

JuncS.... ........

June 12...... .......

June 20...... .......

June 24.. ...........

Area of 

section.

Sq.ft. 

734

724

735

737

713

728

706

701

711

694

692

671

660

666

652 

669

642

645

656

637

641

642

765

673

642

684

676

653

671

727

646

751

702

681

653

652

639

763

Gage 

height.

Feet. 

1.9

1.85

1.8

1.8

1.8

1.7

1.65

1.6

1.6

1.4

1.35

1.3

1.25

1.2

1.05 

1.1

1.05

1.0

.95

.9

.95

1.55

1.1

95

95

g

.85

.85

g

1.2

.85

1.35

1.0

.9

.75

.75

.65

1.6

Discharge.

Sec.-ft.

800

77Q

784

771

691

683

619

617

631

520

470

463

421 

413

373

379

346

329

340

351

665

477

353

375

339

329

oje

434

326

597

362

313

239

243

209

Date.

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

July 13.............

July 17....... ------

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

July 30.............

Septembers... ...

October 21.........

Area of 

section.

Sq.ft. 

675

1,037

736

705

670

657

859

815

813

793

798

811

808

861

902

887 

900 sir

744

731

710

722

822

717

683

727

714

713

708

692

696

694

682

691

704

710

703

721

716

719

734

Gage 

height.

Feet. 

1.1

4.4

1.6

1.3

1.0

1.0

2.6

1.6

1.5

1.4

1.6

1.7

1.7

1.85

2.8

2.1 

2.5

1.7

1.1

1.2

1.0

1.0

2.3

1.0

.9

1.0

1.0

1.0

.95

.9

.9

.9

.9

.9

.9

.95

1.0

1.0

.95

1.1

1.0

Discharge.

Sec.-ft. 

374

2,927

642

479

374

381

1,366

666

635

621

697

731

727

919

1,416

1,203 

1,288

800

563

576

391

369

905

350

347

382

380

378

389

394

393

381

373

379

387

307

308

302

.290

396

359
132 SURFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Pecos River near Moorhead, Tex.,for 1907 and 1908.

Day.

1907. 

1... ............

2... ............

3...............

5...............

7...............

8...............

9...............

10. ..............

11...............

12...............

13. ..............

14. ..............

15...............

16...............

17...............

18. ..............

10

20. ..............

21...............

22. ..............

23...............

24. ..............

25...............

26...............

27.. .............

28. ..............

29. ..............

30...............

31...............

1908. 

1. ..............

2...............

3...............

4...............

5...............

6...............

7... ............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

K... .......... --

18...............

J7,,,............

K...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27.. .............

28...............

29...............

30...............

31 .. ..........

Jan.

2.05

1.7

1.65

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

2.3

2.4

2.4

2 4

2.3

2.15

1.95

1.75

1.75

1.7

1.65

1.6

1.6

1.55

1 9

1.9

1 9

1 9

1.9

1 Q

1.9

1.9

1.85

1.85

1.85

1.85

1.85

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1 75

1.75

1.75

1.75

1.75

1.7

1.7

1.7

1.7

Feb.

1.5 1.5

2.15

2.35

2.2

1.8

1.7

1.7

1.65

1.6

1.55

1.5

1.5

1.45

1.45

1.45

1.65

1.9

1.85

1.75

1.7

1.6

1.6

1.55

1.55

1.5

1.5

1.05

1.65

1.6

1.6

1.6

1.6

1.6

1.55

1.55

1.55

1.5

1.55

1.5

1.5

1.4

1.4

1.35

1.35

1.35

1.35

1.35

1.35

1.35

1.3

1.3

1.3

1.25

1.25

Mar.

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.7

1.8

1.8

1.7

1.6

1.6

1.6

1.7

1.55

1.5

1.5

1.45

1.4

1.4

1.4

1.4

1.3

1.3

1.25

1.2

1.2

1.2

1.2

1.2

1 25

1.25

1.2

1.2

1.2

1.2

1.2

1.1

1.05

1.05

1.05

1.1

1.1

1.1

1.1

1.1

.1

.05

.0

.0

.0

1.0

1.0

1.0

.95

.95

.95

.95

.95

.95

Apr.

1.15

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.0

.95

.95

QC

.9

.9

.9

.9

9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

9

.9

.95

95

.9

.9

9

.95

.95

.9

.95

.95

1.0

.95

.95

7.55

3.5

2.3

1.6

1.5

1.2

1.2

1.1

1.05

1.05

.95

1.0

1.0

May.

0.9

.9

g

9

.9

.9

.9

g

\85

.85

.85

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

1.05

1.05

1.0

.95

.95

.9

.9

.9

.85

.85

.85

.9

.9

.85

.85

.85

.9

.9

.85

.85

.9

1.05

1.2

1.35

1.1

9

.85 '.85

.85

June.

0.8

.8

.8

.8

.8

.8

.8

.75

.8

.8

.8

.8

7r

.75

.75

.7

.7

.7

.8

2.0

9

.9

.7

.8

.8

1.15

1.6

9

.85

1.15

1.1

1.1

1.05

1.0

1.0

1.0

.95

.95

9

.9

.9

.85

.75

.75

.75

.75

.75

.75

.7

.7

.65

.65

.8

1.6

1.6

1.15

.95

July.

1.75

1.6

1.5

i 35

1.0

.9

.9

1.35

.95

.75

2.45

.9

.95

.75

.6

.55

.55

.55

.55

.55

.55

.55

.55

EC

.55

.55

1.2

1.95

1.15

.95

.9

9

10.8

3.85

2.7

2.4

2.2

2.0

1.7

1.55

1.45

1.35

1.3

1.3

1.15

1.15

1.0

1.0

1.0

1.0

1.0

1.0

.95

.95

2.25

2.55

2.35

Aug.

0.5

.5

.45

.45

45

.45

.45

.45

.45

.45

.85

.85

7C

.45

.45

45

.45

.45

.45

45

.45

.45

.45

.4

.4

.4

.4

.4

1.95

1.8

1.6

1.6

1.55

1.7

1.5

1.5

1.4

1.4

1.3

1.4

1.6

1.65

1.9

1.9

1.65

1.4

1.4

1.35

1.7

1.7

1.6

1.6

1.7

1.7

1.7

1.65

1.85

1.85

1.8

Sept.

0.4

.4

.4

.4

.4

.4

.4

.4

.6

.6

.6

.6

.6

.6

.6

.6

.9

9

.8

.8

.7

.7

2.4

2.65

2.85

2.75

2.4

2.3

2.15

2.1

2.05

2.2

2.45

2.45

2.15

1.95

1.95

1.75

1.65

1.5

1.3

1.1

1.1

1.0

1.05

1.15

1.2

1.1

1.1

1.0

1.0

1.0

Oct.

0.8

.75

.85

1.25

1.6

1.6

1.45

1.3

1.35

1.55

1.6

1.55

1.4

1.35

1.25

1.4

1.4

1.4

1.25

1.2

1.2

1.2

1.15

1.1

1.35

2.45

2.45

2.5

2.75

1.7

1.4

1.0

1.0

1.0

1.0

1.0

.95

1.25

2.45

1.7

1.45

1.2

1.05

1.0

1.0

1.0

.95

.9

1.0

1.0

1.0

1.0

1.0

.95

1.0

1.0

1.0

1.0

1.0

1.0

.95

.9

Nov.

1.9

2.55

3.7

3.9

4.2

3.9

3.6

2.8

2.8

2.6

2.4

2.3

a OK

o 25

0 f>

*> ic

2.1

9 15

2.25

1.95

1.9

1 9

2.2

2.15

2.1

.9

.9

.95

.95

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

1.0

1.0

Dec.

2.1

2.15

2.15

2.1

2.1

2 1

2.1

2.05

2.05

2.05

2.0

2.1

9 ft

2.0

1.95

1 Q

1.9

1.9

1 01

1.95

1.95

1.95

1.9

1.85

1.85

1.8

1.85

1.9

1.9

1.9

1.9

1.0

.95

95

.95

.95

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.95

.95

1.0

1.1

1.1

1.1

1.1

1.4

1.35

1.15

1.1

1.05

1.0

1.0

1.0
PECOS RIVER DRAINAGE BASIN. 133

Daily discharge, in second-feet, of Pecos River near Moorhead, Tex., for 1907 and 1908.

Day.

1907. 

1...............

2...............

3...............

4...............

5...............

6...............

7...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19. ..............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29. ..............

30...............

31...............

1908. 

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 --..... .....

Jan.

675

615

570

540

540

535

«535

530

530

525

a525

530

535

540

a 545

705

730

730

o605

595

570

550

o585

560

540

520

o520

520

505

830

820

805

795

780

780

795

o800

800

SOO

800

o780

780

780

780

780

780

775

o770

745

735

730

720

o710

690

690

690

a690

Feb.

490

490

735

810

775

705

670

o650

035

600

570

o535

525

535

o525

525

525

o590

670

655

630

o620

575

565

535

a520

505

505

670

660

630

a620

620

620

615

o615

600

605

605

590

585

575

525

o520

495

495

495

495

495

495

470

o470

470

450

450

Mar.

485

485

485

o485

 485

485

485

565

575

555

o530

525

545

490

490

480

o475

480

485

490

470

470

465

o465

465

465

455

460

460

460

o460

460

435

420

420

o420

415

425

420

415

o415

405

395

«375

375

375

380

o380

370

355

350

o345

345

345

Apr.

465

465

465

465

465

465

460

440

435

o430

430

420

415

o415

415

415

410

410

410

410

420

425

430

o435

325

325

320

o315

335

335

325

330

o330

340

340

330

345

360

350

o350

8,020

2,840

1,500

645

520

520

a 475

435

415

o355

375

May.

435

440

440

440

435

430

440

445

425

o425

430

420

420

o420

415

410

405

400

400

400

a 400

400

400

400

405

390

370

365

360

o345

340

o340-

340

o330

330

335

345

o345

330

345

o435

480

405

340

o325

325

June.

395

395

395

395

390

390

o380

390

385

a 385

O7E

375

one

445

o435

400

OQfl

390

410

480

V7f\

340

325

a485

430

430

360

"360

335

335

o315

01 C

315

290

240

245

o245

940

225

225

210

ogo

670

o670

OJC

July.

630

570

530

470

o325

285

285

365

260

230

o850

295

310

07 c

245

94 K

245

250

o250

250

OPXI

250

o250

260

265

265

490

930

o410

315

295

11,700

o2,480

1,130

970

a, 7^P»

615

505

o480

480

425

425

375

375'

380

a 380

360

360

1,090

ol,330

1,170

Aug.

260

255

o245

245

245

250

250

a 250

250

425

425

390

280

280

280

«280

280

275

275

270

265

250

255

255

o255

255

255

900

800

665

o665

650

695

635

o635

620

620

»620

730

840

840

o72&

630

630

610

o730

730

700

700

o725

725

725

710

o920

920

Sept.

250

250

250

250

250

250

250

250

o250

240

230

260

250

0245

245

240

240

235

235

230

230

230

280

270

260

230

220

o!80

180

180

1,240

1,350

ol,440

1,400

1,300

1,270

1,220

ol,200

1,190

1,220

1,280

al,260

1,070

950

950

«830

780

720

640

o565

510

520

550

480

455

o390

390

390

Oct.

235

210

o265

465

640

640

575

o515

530

580

595

o580

525

505

465

525

525

525

o465

445

445

445

425

o405

555

1,200

1,200

ol,230

1,380

750

570

385

375

a370

370

370

350

470

o970

650

540

435

370

o350

360

365

355

o345

380

380

380

380

365

380

o380

380

380

330

o380

360

345

Nov.

980

-1,510

2,330

2,460

2,630

o2,880

2,740

2,600

2,330

1,610

ol,610

1,420

1,260

1,210

ol, 110

1,060

1,060

1,020

a 980

945

1,120

1,030

a 940

935

930

945

ol,060

1,070

1,040

1,010

345

345

o390

395

380

385

o395

395

395

395

o390

390

390

385

385

o380

380

380

375

o375

375

375

380

a380

380

380

385

o385

420

420

Dec.

1,000

ol,010

995

965

955

945

935

905

895

885

855

o890

845

845

825

o800

810

815

840

o845

845

845

830

815

815

800

815

o830

830

830

830

390

340

o305

300

295

315

310

o310

310

310

305

305

305

o300

305

310

290

o290

320

370

375

385

«395

515

500

425

405

390

o360

360

360

o Dates of measurement.
134 SURFACE WATER SUPPLY, 1907-8.

Monthly discharge of Pecos River near Moorhead, Tex.,for 1907 and 1908.

Month.

1907.

July......................................................

1908.

April .....................................................

July......................................................

Discharge in second-feet.

Maximum.

730 

810 

575 

465 

445 

570 

630 

425 

280 

1,380 

2,880 

1,010

2,880

830 

670 

465 

8,020 

480 

670 

11,700 

920 

1,440 

970 

420 

515

11,700

Minimum.

505 

490 

465 

410 

400 

375 

230 

245 

180 

210 

930 

800

ISO

690 

450 

345 

315 

325 

210 

295 

610 

390 

345 

345 

290

210

Mean.

574 

595 

4% 

434 

421 

415 

324 

275 

239 

594 

1,461 

869

558

767 

553 

404 

763 

359 

337 

1,053 

719 

889 

409 

384 

347

582

Run-off 

(total in 

acre-feet).

35,286 

33, 064 

30,496 

25, 825 

25,904 

24, 724 

19, 894 

16, 909 

14,202 

36,526 

86,926 

53,445

403,201

47, 157 

31, 815 

24, 833 

. 45,402 

22, 066 

20,072 

64, 731 

44,182 

52,899 

25, 150 

22, 869 

21,332

422, 508

GALLINAS RIVER NEAR LAS VEGAS, X. MEX.

The station, which was established August 13, 1903, and is maintained primarily for the purpose of determining the amount of water 

available for diversion and storage in the San Guyjella basin about 6 

miles northwest of Las Vegas, is located at Las Vegas Hot Springs, 

6 miles above Las Vegas, N. Mex.

The altitude of the station is about 6,700 feet. It is below all 

perennial tributaries. The drainage area at the station is about 90 

square miles, while the total for the river is over 600 square miles.

Veiy little water is diverted above the station, though practically 

all of the ordinary flow is used for irrigation in the valley below. 

The reservoir mentioned above has a capacity of about 40,000 acrefeet, and is to be used for the irrigation of 10,000 acres of land. It 

will be filled from the Gallinas, the Sapello, and other small streams 

in that vicinity. The flow of the stream at this point is not usually 

affected by ice conditions.

The gage was washed out on September 29, 1904, and replaced by 

fehe present rod gage on October 19, 1904. The zero of the new rod 

gage is 0.71 foot lower than that of the old one. Results at this station have been fairly satisfactory.
/ PECOS RIVER DRAINAGE BASIN. 135

D'ischarge measurements ofGallinas River near Las Vegas, N. Mex., in 1907 and 1908.

Date.

1907. 

March 18....... 

April 19. .......

May 26.. .......

1908. 

March 24. ......

April 30........

July 15.. .......

October 30.....

Hydrographer.

W. A. Lamb. ...................................... 

.... .do. .............................................

.....do..............................................

.....do..............................................

.... .do. .............................................

.....do..............................................

V. L. Sullivan. .....................................

.....do..............................................

V.L.Sullivan......................................

.... .do. .............................................

.... .do. .............................................

Width.

Feet. 

34 

30

34

34

34

35

26

4

20

30

23

26

21.6

Area of 

section.

Sq.ft. 

21 

26

46

37

 40

23

10

1.3

7.4

21

10.3 ias

8.7

Gage 

height.

Feet. 

2.08 

2.25

2.65

2.35

2.48

2.12

2.00

1.70

1.85

2.20

1.85

2.10

1.60

1.78

Discharge.

Sec.-ft. 

26 

42

124

68

85

33

12.7

1.3

5.9

a 41

all. 7

a29.3

61.0

c4.2

a Made by wading above gage. & Estimated. c Made by wading at regular section.

Daily gage height, in feet, ofGallinas River near Las Vegas, N. Hex., for 1907 and 1908.

[William Prager, observer.]

Day.

1907. 

1...............

2...............

3...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

1 C

19...............

20. ..............

21...............

22. ..............

23...............

24...............

25...............

26...............

27...............

28. ..............

29..... ..........

30...............

31...............

1908. 

1.. .............

2...............

3...............

4...............

5...............

Jan.

1.95

1.9

1.95

2.0

2.0

2.0

1.95

2.0

2.0

2.0

1.95

2.0

2.0

2.0

2.0

2.0 *> OA

2.05

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

1 a

1.8

1 a

1.8

1.8

Feb.

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.05

2.05

2.05

2.0

2.05

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

1.7

1.7

1.7

1.7

1.7

Mar.

2.0

2.0

2.0

2.12

2.05

2.05

o 05

2.2

2.1

2.15

2.05

2.0

2.0

2.15

2.0

2.0

2.05

2.1

2.2

2.2

2.3

2.25

2.25

2.2

2.2

2.2

2.2

2.1

2.1

2.1

2.0

1 a

1 s

1 a

1.8

Apr.

2.1

2.1

2.1

2.1

2.1

2.1

2.2

2.2

2 25

2.25

2.3

2.25

2.2

2.2

2.2

2 2

2.1

2.15

2.3

2.3

2

QE

2

0

2.3

2.3

2.4

2.4

1 9

1 9

1 a

1 s

1.8

May.

2.5

2.55

2.6

2.6

2.6

2.6

*> tt

2.5

2.5

o 55

9 EE

2.6

2.5

2.5

2.45

2.4

2 A

2.4

2.5

2

E,

2.5

2.4

2.35

2.3

2.4

2.4

2.55

2

0

2.2

2.2

2.15

June.

2.6

2.7

2.7

2.6

2.6

2.6

o 55

2.5

2.4

2.4

2.35

0 Q

9 3

2.2

2.2

2.2

2.3

2.25

2.2

2.2

2.2

2.1

9 1

2 1

2.1

2.0

2.0

2.0

2 A

2.0

1.9

July.

2.0

2.0

2.0

2.0

2.1

2.0

2.0

2.0

2.0

2.0

2.1

2.0

2 A

2.16

2.0

2.0

2.15

2.0

2 A

2.1

2.15

2.1

2

QC

2.35

2.35

2.3

1 7C.

1.7

1.7

1.75

1.85

Aug.

2.3

2.5

2.4

2.3

2.25

2.2

2.15

2.15

2.15

2

AE

2 A

2.0

2.0

2.0

2.0

2.0

1.9

1 Qf»

2.15

2.15

2.0

2.0

2.0

2

{\

2.0

2.0

2.0

2.15

2.2

2

^c

2.75

2

0

2.65

2.5

Sept.

2.3

2.4

2.35

2.3

2.25

2.2

2.15

2.1

2.1

2.1

2.05

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

1.95

1 9

1.9

1.9

1 9

1.9

1.9

1.9

1.9

1.9

2.1

2.1

2.1

2.05

2.0

Oct.

1.9

1.8

1.8

1.8

1.8

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.6

1.6

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1 a

1.7

1.7

1.7

1.7

Nov.

1.7

1.7

1.7

1.7

1.7

1.7

1.75

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.6

1.6

1.6

1.6

1.6

Dec.

1 fi

1 S

1.*

1 f1 fi

1 8

1 ?

1.8

1.8

l.fi

1.8

1.8

l.fj

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1 8

1.8

1 fi

1 8

I.?
136 SURFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Gallinas River near Las Vegas, N. Hex., for 1907 and

1908 Continued.

Day.

1908. 

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24. ..............

25. ..............

26...............

27...............

28...............

29...............

30............... *1

Jan.

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.75

1.7

1.7

1.7

1.7

1.7

1.7

1.7

Feb.

1.75

1.8

1.8

1 S

1.'8

1 S

1.8

1.8

1 a

1.8

1.8

1 S

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

a 2. 10

2.20

Mar.

1 a

1.85

« 2. 05

1 9

1 Q5

a.2 0

a 2. 0

1 OK

1 S

1.8

1 s

1.8

1.85

1.9

1.9

1.9

1.9

1.9

1.9

1.9

1 9

1.9

1.9

1.9

1.9

Apr.

1 a

1.8

1.8

1 S

1 9

2.0

2.0

2.0

2.1

2.1

2.1

2 1

2.15

2.3

2.35

2.5

2.5

2.45

2.35

2.3

2.25

9 2

2.2

2.0

May.

2 1

2.1

2.1

2

1

2.1

2.1

2.0 9 n

2 1

2.1

2.05

2.0

2.0

2.0

2.1

2.1

2.1

2.1

2.0

2.0

2.0

2.0

June.

1.9

1 Q

1.9

1 9

1 s

1 S

1 s

1 s

1 S

1.8

1.8

1 a

1.8

1.8

1.8

1.75

1.7

1.7

1.7

1.7

62.15

1.85

1.8

1.8

1.8

July.

1 75

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.75

1 9

1.9

1 9

2.2

2.1

2.0

1.95

1.9

1.9

1.9

1.9

2.0

1.9

1.9

2.05

2.65

Aug.

2

05

2.3

9 55

9 35

9 9

2.25

2.4

2

0

2.35

2.15

2.1

9 9

2.4

9 9

2.6

9 3

2.25

9 9

2.15

2.1

2.35

2.3

9 O

Sept.

2.0

2.0

1 Q5

1 9

1 Q

1.9

1.9

1 9

1 9

1.9

1.9

1 9

1 9

1.9

1.9

1 Q

1.8

1 a

1.8

1.8

1.8

1 fi

1 fi

1.8

1.8

Oct.

1.7

1.7

1.7

1.6

1.6

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1,6

1.6

Nov.

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.65

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7 1.7'

1.7

1.7

1.8

1.8

1 8

Dec.

1 S

1 a

1 a

1 a

1 a

1 S

1 a

1 8

1 a

1 0

1 a

1 a

1 a

1 8

1.8

1 a

1.8

1 ft

1 Q

1.8.

1.8

1 Q

1 Q

1 H

1.8

1 a

a Fluctuations in February and March, 1908, marked (o) due to discharge from Aqua Pura Company's 

dam into river. 

^Cloudburst. Gage height 2 a. m.,=3.5 feet.

Rating tables for Gallinas River near Las Vegas, N. Hex.

JANUARY 1, 1907, TO APRIL 24, 1908.

Gage

height.

Feet.

1.60

1.70

1.80

1.90

2.00

Discharge.

Sec.-ft.

0.0

1.3

3.5

7.0

14

Gage

height.

Feet.

2.10

2.20

2.30

2.40

2.50

Discharge.

Sec.-ft.

25

39

55

73

92

Gage

height.

Feet.

2.60

2.70

2.80

Discharge.

Sec.-ft.

113

135

158

NOTE. The above table is not applicable for ice or obstructed channel conditions. It is based on 14 

discharge measurements made during 1907 and 1908 and is well defined.

APRIL 25, 1908, TO SEPTEMBER 3, 1908.

1.60

1.70

1.80

0.8

4

8

1.90

2.00

2.10

13

20

29

2.20

2.30

41

55

NOTE. The above table is not applicable for obstructed-channel conditions. It is based on discharge 

measurements made during 1907 and 1908 and is fairly well defined. Above gage height 2.30 feet use 1907 

table.

SEPTEMBER 4, 1908, TO DECEMBER 31, 1908.

1.50

1.60

1.70

0.0

0.3

1.8

1.80

1.90

2.00

5.0

10.5

19

2.10 29

NOTE. The above table is not applicable for ice or obstructed-channel conditions. It is based on 

discharge measurements made during 1908 and 1909 and is well defined.
PECOS RIVER DRAINAGE BASIN. 137

Monthly discharge o/Gallinas River near Las Vegas, N. Mex.,for 1907 and 1908.

Month.

1907. 

January ......... ^- ..................................

March ..'..................................

April ...............................................

July.................................................

October ..................................... .......

1908. 

January ..................................... .

February. ............................. .............

April................................................

July................................ ................

August ..............................................

October ........................ ....................

The year. .....................................

Discharge in second-feet.

Maximum.

20 

20 

55 

73 

113 

135 

64 

92 

73 

7 

3.5 

15

135

3.5 

39 

20 

92 

41 

35 

124 

158 

29 

5 

5 

5

158

Minimum.

7 

14 

14 

25 

55 

14 

10.5 

7 

7 

0 

1.3 

3.5

0

1.3 

1.3 

3.5 

3.5

20 

4 

4 

29 

5 

0 

.3 

5

0

Mean.

13.6 

14.9 

27.6 

43.5 

91.3 

64.0 

24.7 

27.3 

22.8 

1.68 

3.02 

3.50

28.2

2.97 

5.62 

7.07 

29.4 

27.5 

10.7 

15.6 

64.8 

12.2 

.74 

1.34 

5.0

15.2

Run-off 

(total in 

acre-feet).

836 

828 

1,700 

2,590 

5,610 

3,810 

1,520 

1,680 

1,360 

103 

180 

215

20,400

183 

323 

435 

1,750 

1,690 

637 

959 

3,980 

726 

46 

80 

307

11,100

Accu« 

racy.

C. 

C. 

B. 

B. 

A. 

A. 

B, 

Bt 

B,

B» 

B. 

Bt 

Bt

A. 

B.

NOTE. No accuracy indicated for mean monthly discharge less than 10 second-feet; these months are ia 

general roughly approximate.

HONDO RESERVOIR INLET NEAR ROSWELL, N. MEX.

This station which has been maintained by the United States 

Reclamation Service for the purpose of determining the amount 

of water going into the Hondo reservoir, has been' known as the 

"inlet canal" at Hondo reservoir, N. Mex. It is located 12 miles 

southwest of Roswell, just below the sand check at the lower end 

of the inlet canal (PI. Ill, B). It was established on August 7, 1906, 

and gage observations were discontinued on March 31, 1908. The 

reservoir is to store water for the irrigation of about 10,000 acres of 

land.

On August 7, 1906, the gage was moved and the present verticalrod gage was established at a different datum. This gage is fastened to the east end of the first partition from the east end of the 

sand-check gate, and the zero rests on the sill of the gate.

Sufficient discharge measurements have not been made at this 

station to form the basis for very reliable estimates of the daily discharge. As there was practically no flow in Hondo River during 

the entire season of 1908, there was very little inflow at the reservoir.
138 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Hondo reservoir inlet near Rosivell, N. Mex., in 1907.

Date.

January 5 ......

Hydrographer.

W. A. Lamb....................................... 

.....do..............................................

Width.

Feet. 

33 

56

34

Area of 

section.

Sq. ft. 

18 

57

38.

Gage 

height.

Feet. 

0.20 

.50

.10

Discharge.

Scc.-fl. 

«28

a 177

a48

a Made by wading below gage.

Daily gage height, in feet, of Hondo reservoir inlet near Roswell, N. Mex., for 1907

and 1908.

[John F. Boscoe, observer.]

Day.

1907. 

1...............

2...............

3...............

4..... ..........

6...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...... .... ...

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Day.

1908. 

1. ..............

2...............

3...............

4...............

5...............

6...............

7... ............

8...............

9....... ........

10...............

Jan.

O Qfl

.30

.32

OC

OO

1Q

.20

.15

.18

.25

30°5

30

OQ

.80

1.00

.75

.58

.50

.50

.50

.45

.40

.38

.30

.25

Jan

.. 0.0

.0

.0

.c*}

1

.c

.0

.0

.c

Feb.

.38

.30

30

30

.25

.20

.25

.20

.12

.15

.15

.05

.05

.05

.05

.05

flC

.05

.00

.00

. Fel

5 .....

5 .....

5 ....

0 0.2

o ^

5 .....

5 .....

5 .....

5 .....

M

>. 

0

0

ar.

11

13

14

15

16

17

18

19

20

Apr,

Day

1908

May. June.

0.05

.05

.05

Jan.

0.05

.05

July

0.15

.08

.10

.02

.02

.10

.20

.15

.20

.08

Feb.

Aug.

6.05

.10

.10

.05

.02

.15

.18

30

.50

.50

.45

21...

OO

23...

24...

25...

26...

27...

28...

29...

30...

31...

Sept.

0.40

.10

- .10

.05

,10

.08

.08

.05

.05

.15

.15

.10

.05

.10

.05

.08

.05

Day.

1908.

Oct.

0.02

.05

.05

.05

.05

.10

.10

.10

.40

.30

.30

Nov.

0.30

.30

.30

.25

.25

.20

.20

.20

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.08

.08

.05

.05

.05

.05

.05

.05

.05

.05

.05

Jan.

Dec.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

Feb.

NOTE. The canal was dry on days when the gage was not read.
PECOS RIVER DRAINAGE BASIN. 139

HONDO RIVER BELOW HONDO RESERVOIR OUTLET CANAL, NEAR 

ROSWELL, N. MEX.

This station was established about December 1, 1907, at the bridge 

across Hondo River, a short distance below the outlet canal of the 

Hondo reservoir, near Roswell, N. Mex., for the purpose of determining the amount of water passing the reservoir. A temporary gage 

was set up and gage readings were made from January 1 to March 31, 

1908, at which date the station was discontinued. 

. There was probably no flow during December, 1907, and very little 

in Hondo River during the entire season of 1908, consequently no 

water went into the Hondo reservoir.

Daily gage height, in feet, of Hondo River below Hondo reservoir outlet canal, Roswell

N. Mex., for 1908.

[John F. Boscoe, observer.]

Day.

1. ................

2.................

3...............

4.................

5.................

7.................

9.................

10.................

Jan.

0.9

1.0

.9

.9

Feb.

0.95

.9

1.1

1.1

1.1

Day.

11................

12

14................

15................

16................

17................

19................

20................

Jan.

0.9

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

Feb.

1.1

1.1

.9

.9

.9

.9

.9

.9

.9

Day.

21.................

22.................

23.................

24.................

25.................

26.................

27.................

28.................

29.................

30.................

31

Jan.

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.9

.9

.3

Feb.

0.9

.3

.3

.3

.3

NOTE. The canal was dry on days when the gage was not read, from January 1 to March 31. 

PENASCO RIVER NEAR DAYTON, N. MEX.

This station was established September 12, 1905, about 2 miles 

east and 1 mile north of Dayton, N. Mex., and about 1 mile above the 

mouth of the river. Daily gage observations were discontinued 

March 31, 1908, but one or two gage observations were made during 

the remainder of 1*908 when there was water in the stream.

The records show the amount of water which the Penasco contributes to Pecos River, and are used by the United States Reclamation Service in connection with the Carlsbad project. The station is 

below all tributaries. The drainage area is about 1,300 square miles.

Ice conditions have little effect on stream flow in this locality.

The datum of the gage has remained constant during the maintenance of the station. Sufficient discharge measurements have not 

been made from which to work up estimates of daily discharge. Fair 

results, however, can be obtained if frequent measurements are taken. 

The discharge at high water gage heights has not been defined by 

discharge measurements.
140 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Penasco River near Dayton, N. Hex., in 1907.

Date.

March 27.......

Hydrographer.

W. A. Lamb.......................................

.....do..............................................

Width.

»

Feet. 

23

3

Area of 

section.

Sq.ft. 

14.0

.45

Gage 

height.

Feet. 

1.28

.93

Discharge.

Sec.-ft. 

»25

.4

a Made by wading 30 feet below gage.

Daily gage height, in feet, of Penasco River near Dayton, N. Mex., for 1907 and 1908.

[Lemo Weddle, observer.]

Day.

1907. 

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

Jan.

1.3

1.3 i ^?

1.3

1.3

1.3

1.3

1.2

1 2

1.3

1.3

1 1

1.3

1.3

1.3

1.3

1.3

1.4

1.4 

1.5

1.5 

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.4

1.4

Feb.

1.3

1.3

1.4

1.4

1.4

1.4

1.3

1.3

1.3

1.3

1.3

1.2

1.2

1.1

1 2

1.3

1.3

1.3

1.4 

1.2

1.3

1.3

1.3

1.2

1.2

1.3

1.2

1.1

Mar.

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.9

.9

1.0

1.0

1.0

1.0

1.0 

1.0

1.0 

1.0

1.0

.9

.9

.9

.9

.9

.9

1.0

1.0

Apr.

1.0

1.0(j

9

.9

.8

.8

.8

.9

.9

Q

9

.8

.8

.8

.8

.8 

.8

.9 

.8

.9

.9

.9

.9

.9

.9

9

.9

May.

0 9

9

9

.8

.8

.8

.8

.8

.8

.8

.7

.7

.7

.7

.9

.7

.7 

.7

.7 

.7

.7

.7

.7

.7

.7

.7

.8

.7

.7

June.

0.7

.7

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

C

.5

.6

.6

.6

.6

.6 

1.5

1.0 

.9

.9

.8

.8

.8

.8

.4

July.

0.4

.4

.4

.3

.3

.8

.8

.7

.6

.5

.4

.4

.4

.......

.......

Aug. Sept.

.......

Oct.

.......

2.1

1.5

.8

Nov.

0.7

.7

.5

.4

'.3

.3

.3

.3

.3

.4

1.0

1.0

1.0

1.0

1.0

1.0

1.0 

1 0

1.0 

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

Dec.

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0 

1.0

1.0 

1.0

1.0

.8

.8

NOTE. River was dry July 17-October 27 and December 26, 1907-March 31, 1908.

The following gage heights in feet were observed in 1908: July 20, 1.8; July 21,1.6; July 22, 1.1; July 23, 

1.6; Aug. 5. 1.4. The stream was practically dry during the entire season of 1908, except for one or two 

occasional freshets.
DEVILS BIVER. 141

LAKE MCMILLAN AT LAKEWOOD, N. MEX.

During part of 1907 gage readings were taken showing the height 

of the water in the McMillan reservoir. After July 13 it contained 

very little water.

Daily gage height, in feet, of Lake McMillan at Lakewood, N. Mex.,for 1907. 

[H. C. Halcomb, observer.]

Day.

1. .

2. .

3. .

4. .

5. -

«. ..

7. .-

8. ..

9. ..

10. .-

11. ..

12. ..

13....

14....

15....

Jan.

17.4

17.6

17.8

17.9

17.9

18.0

18.0

17.9

17.5

16.9

16.3

15.6

14.7

13.9

13.9

Feb.

15.3

15.5

15.7

16.0

16.2

16.4

16.5

16.7

16.9

16.5

16.0

15.5

15.5

15.8

15.8

Mar.

15.6

15.4

14.3

13.8

13.9

14.0

14.0

14.1

14.1

14.1

14.0

14.0

14.0

14.0

14.0

Apr.

13.5

13.6

13.6

13.6

13.6

13.6

13.6

13.6

13.6

13.6

13.7

13.7

13.7

13.7

13.7

May.

15.1

15.2

15.3

15.4

15.5

15.6

15.8

16.0

16.0

16.1

16.2

16.3

16.2

16.2

16.2

June.

15 9

16.3

16.2

16.1

16.0

15.9

15.9

15.9

15.9

16.1

16.5

16.5

16.6

16.7

16.7

July.

14.8

14.7

14.4

14.1

13.7

13.5

12.9

12.6

12.3

12.0

11.9

11.5

10.6

.......

Day.

16.. .

17.. .

18.. .

19.. .

20.. .

21.. .

22.. .

23.. .

24.. .

25.. .

26.. .

27.. .

28.. .

29....

30. ...

31

Jan.

14.4

14.8

15.1

15.4

15.7

16.0

16.3

16.6

16.8

17.0

16.5

16.0

15.4

14.5

14.8

15.1

Feb.

15.9 ie!i

16.3

16.4

16.6

16.7

16.8

16.9

17.0

17.1

16.8

16.3

15.8

......

Mar.

14.0

13.9

13.9

13.9

13.8

13.8

13.8

13.7

13.7

13.6

13.6

13.5

13.5

13.4

13.4

13.4

Apr.

13.7

13.6

13.6

13.6

13.6

13.7

13.9

14.1

14.3

14.5

14.6

14.7

14.9

15.0

15.0

May.

16.2

16.2

16.3

16.2

16.0

15.8

15.7

15.6

15.6

15.5

15.7

15.6

15.6

15.7

15.8

15.8

June.

16.8

16.4

16.2

16.0

16.0

16.0

15.5

15.6

15.5

15.3

15.2

15.2

15.1

15.0

14.9

July.

.. .

..

.... .

......

......

NOTE. July 14-December 31,1907, reservoir nearly empty.

DEVILS RIVER AT DEVILS RIVER, TEX.

This station, which was established in April, 1900, by the International Boundary Commission, is opposite the Southern Pacific 

Railroad station at Devils River.

The river is about 50 miles long, has a perennial flow, and during 

flood periods is subject to great fluctuations. No good location for a 

gaging station exists on this stream where it would be accessible from 

the railroad station. The right bank is the talus of a cliff, the left bank 

is a bottom heavily timbered. At the site chosen the bed of the stream 

is nearly all a rock ledge, but seamed and faulted so as to be rough. 

The current changes in such a way as to give materially different 

discharges for the same gage height. It is therefore necessary to 

make frequent measurements to determine closely the daily flow.

The highest water on record occurred April 6, 1900, about two 

weeks before this gage was established. It reached a height of 25.4

feet on the gage, but this is 8 feet higher than my other known flood.

Low water is 2 feet on the gage.

The observations at this station during 1907-8 have been made 

under the direction of the United States section of the International 

Boundary Commission.
142 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Devils River at Devils River, Tex., in 1907. 

[By E. E. Winter, D. J. Smith, I. P. Whitis, and W. H. Dodd.]

Date.

March 18...........

March 31...........

April 9.............

April 13............

April 20............

April 25............

TL/TQTT Q

May 22.............

Area of 

section.

Sq.ft. 

492

485

483

486

481

481

483

474

468

465

464

462

458

456

455

455

449

448

442

443

457

448

Gage 

height.

Feet. 

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.55

2.55

2.55

2.5

2.5

2.5

2.5

2.5

9 %

2.45

2.45

2.45

2.5

2.45

Discharge.

Sec.-ft. 

718

689

684

678

676

651

638

A93

653

609

593

571

567

550

529

533

CJO

499

483

KOQ

507

523

496

Date..

July 5....... .......

July 11...... .......

July 20... ..........

July 29.............

September?"......

September 29......

October 13.........

October 22.........

October 30. ........

Area of 

section.

Sq.ft. 

407

405

405

393

395

371

371

371

331

341

345

' 374

335

370

507

378

380

379

360

375

361

341

322

Gage . 

height.

Feet. 

2.5

2.45

2.5

2.5

2.5

2.4

2.4

2.4

2 4

2.4

2.4

2.5

2 4

2.4

2.6

2 4

2.4

2.4

2.4

2.4

2.4

2.35

2.3

Discharge.

Sec.-ft. 

502

555

546

550

551

520

521

523

463

509

525

606

523

593

723

606

582

631

610

594

568

532

512

"Measurement September 7,1907, too small; hence rejected.

Discharge measurements of Devils River at Devils River, Tex., in 1908. 

[By W. H. Dodd and E. E. Winter.]

Date.

March 13...........

March 20...........

April6... ..........

April 14. ...........

April 22..... .......

AJ>ril29............

MaylS.............

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

June 21..... ........

June 29.............

JtilyS... ...........

July 10.............

Area of 

section.

Sq.ft. 

329

335

338

346

325

335

338

322

324

327

318

321

321

328

386

371

QK(\

343

460

419

402

390

380

362

388

875

Gage 

height.

Feet. 

2.3

2,3

2.3

2.3

2.25

2.3

2.25

2.25

2.3

2.25

2 25

2.25

2.3

2.5

2.4

2 OK

O QK

2.6

2.5

2.45

2.4

2.35

2.4

3.95

9 X

Discharge.

Sec.-ft. 

491

K1 0

502

523

494

504

K.O1

504

492

487

686

534

K9fl

829

655

614

CQ7

536

KftK

KQO

Date.

July 23...... .......

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

Qiir*i~pm Km* 9Q

Area of 

section.

Sq.ft. 

389

398

405

386

363

QftK

363

362

347

344

342

337

342

9.71

346

QQK

QQ.7

334

Oft7

335

007

334

332

OOC

Gage 

height.

Feet. 

2.4

2.5

2.5

2.45

2.4

2.4

2.4

2.4

2.35

2.3

9 3

2.3

2.35

2.4

2.35

9 3

9 1

2.3

9 it*

2.3

9 o

2.3

2.3

2

Q

2.3

Discharge.

Sec -ft. 

579

707

597

601

554

533

530

493

473

444

481 «;dl

494

472

471

CEjl

472

475

484
DEVILS RIVER. ' 143

Daily gage height, in feet, of Devils River at Devils River, Tex.,for 1907 and 1908.

Day.

1907. 

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

1908. 

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

Jan.

2.65

2.65

2.65

2.65

2.65

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3 

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

Feb.

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.3

2.25

2.25

2.25

2.3

2.3

2.25

2.25

2.3

2.3

2.3

2.3 

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.25

2.25

2.25

2.3

2.3

2.3

2.3

2.3

2.25

2.25

Mar.

2.55

2.55

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3 

2.3

2.3

2.3

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

Apr.

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.25

2.4 

2.35

2.3

2.3

2.3

2.3

2.35

2.65

2.5

2.5

2.5

2.5

2.5

2.45

2.4

2.4

2.4

May.

2.45

2.45

2.45

2.45

2.45

2.45

2.6

2.6

2.5

2.5

2.5

2.5

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.65

2.5

2.4

2.4

2.4

2.4 <> 4

2.4

2.35

2.35

2.35

2.35

2.35

2.35 

2.35

2.35

2.35

2.35

2.35

2.35

2.35

2.35

2.35

2.35

2.35

4.2

3.4

2

0

2.7

9 7

2 7

2.65

2.7

June.

2.5

2.5

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.55

2.65

2.5

2.5

2.5

2.5

2.45

2.45

2.45

2.45

2.45

2.7

2.6

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.45 

2.45

2.45

2.45

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.35

2.35

July.

2.4

2.6

2.5

2.5

2.45

2.4

2.4

2.65

2.5

2.45

2.4

2.55

2.6

2.7

2.7

2.7

2.65

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.4

2.4

2.4

2.45

2.5

2.45

2.45

2.35

2.35

2.35

2.35

2.4

2.4

2.4

2.45

3.5

3.9

3.0

2.65 

2.5

2.5

2.5

2.45

2.45

2.45

2.45

2.5

2.5

2.5

2.45

2.4

2.4

2.4

2.4

2.4

2.45

2.5

2.55

Aug.

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.5

2.45

2.4

2.4

2.5

2.7

4.0

2.75

2.6

2.55

2.5

2.5 

2.5

2.5

2.5

2.5

2.45

2.45

2.45

2.5

2.55

2.5

2.45

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

Sept.

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.35

2.35

2.35

2.35

2.35

2.4

2.4

2.4

2.4

2.4

2.4 

2.4

2.4

2.4

2.4

2.4 2.4-

2.4

2.4

2.35

2.35

2.35

2.3

2.3

2.3

2.3

2.3

2.3

2.3

Oct.

2.4

2.4

2.4

2.55

3.3

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.5

2.5

2.5

2.5

2.5

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.5

2.75

2.4

2.3

2.3

2.3

2.35

2.35

2.35

2.45

2.4

2.3

2.3

2.3

2.3 

2.3

2.3

2.35

2.35

2.35

2.35

2.35

2.35

2.35

2.35

2.35

2.3

2.3

2.4

2.35

2.35

2.35

2.35

2.35

Nov.

3.0

2.75

2.9

2.75

2.6

2.6

2.6

2.55

2.55

2.4

2.4

2.4

2.4 '

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.55

2.6

2.45

2.4

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.4

2.45

2.4

Dec.

2.4

2.4

2.4

2.4

2.4

2 A

2 A

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2 A

2.4

2.4

2.35

2.35

2.35

2.35

2.35

2.35

2.35

2.35

2.3

2.3

2.3

2.3

2.3

2.3

2.4

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3 

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3
144 SURFACE WATEK SUPPLY, 1907-8.

Daily discharge, in second-feet, of Devils River at Devils River, Tex.,for 1907 and 1908.

Day.

1907. 

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

1908. 

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

Jan.

695

700

705

710

715

700

705

710

«715

710

705

700

695

«690

690

690

690

685

685

685

685

0686

685

685

685

680

680

680

680

0675

510

500

0490

495

495

495

500

600

505

505

510

o515

510

510

510

510

510

505

505

o 500

505

510

510

515

515

525

525

525

Feb.

675

675

675

675

675

675

675

675

o675

675

675

670

665

660

655

o650

650

650

645

645

640

640

0640

635

635

630

625

o625

525

o495

490

490

520

515

480

475

505

o505

505

510

515

515

520

520

525

530

495

'500

535

535

535

530

0495

Mar.

605

605

635

635

640

645

645

650

650

0655

650

650

645

620

615

615

610

0610

605

605

605

600

600

600

600

595

o595

590

585

575

500

500

o505

505

505

510

510

510

515

515

515

520

o520

520

515

495

495

495

o490

490

490

490

490

490

490

AGti

485

485

Q485

485

Apr.

570

570

570

570

570

570

565

o565

565

560

555

o550

550

545

545

540

535

530

530

530

530

535

«535

535

535

535

535

«535

485

485

485

490

490

0490

490

490

490

565

540

«515

515

515

515

545

. 575

785

745

o685

685

685

685

685

ACE

650

650

May.

520

520

520

520

520

520

520

630

o630

540

540

540

540

0500

500

495

495

490

490

485

485

o485

485

480

480

480

475

475

475

670

545

635

620

605

590

575

o560

535

530

530

525

525

520

o520

520

515

515

510

510

505

505

500

500

500

2,550

1,570

o830

740

740

740

o695

' 740

June.

545

545

525

525

525

525

525

525

o525

525

520

520

515

515

510

o505

505

505

505

545

585

525

525

o525

525

500

500

495

495

o495

740

685

630

o630

630

630

630

630

630

630

630

615

o615

615

615

595

595

595

595

595

«595

585

575

565

Kfif)

540

«535

535

July.

465

560

510

505

o475

465

480

620

555

545

o530

600

620

665

660

660

630

550

545

0545

545

545

545

550

500

500

500

525

o550

525

525

535

535

535

535

o565

565

565

620

1,730

o2,160

1,150

760

590

o590

590

585

585

585

585

590

590

o585

580

580

580

580

580

620

665

o705

Aug.

525

530

535

o535

535

535

535

535

535

535

520

520

520

o520

520

520

520

520

520

520

520

520

520

520

0520

520

520

520

525

«525

525

645

585

520

510

0595

800

2,260

850

700

650

600

600

0600

600

600

600

555

o555

555

600

650

600

555

535

535

o535

635

535

530

o630

530

Sept.

520

520

520

520

520

515

o515

515

515

510

510

o510

510

510

510

510

515

515

515

515

520

520

520

520

520

520

525

525

o525

525

630

510

510

510

510

510

530

530

o530

530

525

525

0520

520

520

520

520

520

520

o495

495

495

475

0475

475

475

470

0470

470

Oct.

525

525

525

o645

1,250

560

555

550

545

640

535

530

o525

530

620

625

635

645

650

580

585

o595

590

585

580

575

570

565

645

845

565

465

465

460

480

475

470

510

485

445

o445

445

450

450

450

475

475

480

o480

485

490

495

500

505

490

495

o540

515

505

o495

495

Nov.

1,050

855

980

865

745

750

755

715

715

600

605

o605

600

595

590

o585

585

590

595

600

605

610

615

620

o630

625

740

775

o650

605

470

470

470

a 470

470

470

470

470

470

470

465

a465

465

465

470

470

o470

470

470

470

470

470

470

470

470

470

470

525

525

Dec.

600

600

o595

590

585

580

580

575

570

o570

570

570

570

570

565

565

565

0530

535

535

535

635

535

540

540

505

505

505

610

o510

510

520

480

480

o475

475

475

470

470

o470

470

470

470

470

470

0470

470

475

475

475

0475

475

475

480

480

485

o485

485

485

480

0480

480

Dates of measurement.
EIO SALADO. 145

re of Devils River at Devils River, Tex.,for 1907 and 1908.

Month.

1907.

May......................................................

July......................................................

1908.

Mav..... ................................................

July......................................................

Discharge in second-feet.

Maximum.

715 

675 

655 

570 

670 

585 

665 

535 

525 

1,250 

1,050 

600

1,250

525 

535 

520 

785 

2,550 

740 

2,160 

2,260 

530 

540 

555 

520

2,550

Minimum.

675 

625 

570 

530 

475 

495 

465 

520 

510 

525 

585 

505

465

490 

475 

485 

485 

500 

535 

535 

510 

470 

445 

465 

470

445

Mean.

693

657 

616 

549 

518 

520 

548 

525 

517 

606 

682 

553

582

508 

510 

500 

574 

676 

606 

697 

647 

507 

481 

476 

477

555

Run-off 

(total in 

acre-feet).

42,595 

36,466 

37, 894 

32,648 

31,835 

30, 952 

33,709 

32,271 

30, 774 

37,279 

40, 572 

34,017

421,012

31,259 

29,355 

30, 744 

34, 175 

41,564 

36,079 

42,863 

39. 769 

30, 159 

29,583 

28,314 

29,345

403,209

RIO SALADO NEAR GUERRERO, TAUAULIPAS, MEXICO.

The Salado is a torrential stream, entering the Rio Grande from 

the Mexican side about 60 miles below Laredo, or 730 miles by 

river below El Paso. The town of Guerrero is located on the Salado 

some 4 miles above its mouth, and the gaging station is 2 miles abov-e 

the town. The gaging station was established in 1900 by the International Boundary Commission.

The river is a series of pools and rapids. The best pool available 

was chosen for the station. The banks are sandy clay, not subject 

to erosion. The bottom is mud. In low water the river is measured 

by wading among the rocks below the station. Frequent discharge 

measurements are made to determine closely the daily flow. The 

highest recorded flood, on June 16, 1903, gave 17.7 on the gage.

The observations at this station have been made under the direction of the Mexican section of the International Boundary Commission.

Discharge measurements and gage heights for the years 1900 to 

1904, which have not hitherto been published by the United States 

Geological Survey, are given herewith, together with data for 1907 

and 1908.

24440 IRR 248 10 10
146 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements of Rio Salado near Guerrero, Tamaulipas, Mexico, in 1900.

[ByC. Trevino.]

Date. Area of 

section.

Sq.ft. 

914

Gage 

height.

Feet. 

2.45

Discharge.

Sec.-ft. 

382

Date.

December 30.......

Area of 

section.

Sq.ft. 

924

Gage 

height.

Feet. 

2.5

Discharge.

Sec.-ft. 

393

Discharge measurements of Rio Salado near Guerrero, Tamaulipas, Mexico, in 1901.

[By C. Trevino and D. de Lassaulx.]

Date.

March 13.. .........

March25...........

Aprill.............

April 13... .........

Aprill7... .........

April 21............

April 25. ...........

Mayl..... .........

May9..... .........

May 13.............

May 17. ............

May 21.............

May 25.............

May 29.............

July 3... ...........

Area of 

section.

Sq.ft.

806

795

776

7QK

740

666

661

666

5.83

587

564

553

5

OFL

491

457

441

423

429

369

327

304

304

318

289

2,510

1,100

1,015

1,210

1,427

1,108

955

1,148

772

729

650

597

519

1,826

730

Gage 

height.

Feet. 

2.4

9 3

2.1

QIC

1.9

1.8

1.7

1.75

I

K

1.3

1.2

1.1

1.0

1.1

.55

.45

2

.15

.1

.05

 .1

_ 2

- .3

 .5

 .6

- .75

- .7

9.22

3.15

2.85

3.85

4.72

3.32

2.55

3.52

1.S5

1.7

1.3

1.0

.7

6.35

2.2

Discharge.

Sec. ft. 

268

287

280

226

242

211

202

185

173

158

141

117

99

94

101

88

87

75

63

56

54

48

47

41

33

30

35

41

36

11,526

861

600

1,118

1,936

802

560

1,322

525

373

182

149

113

5,160

293

Date.

July7... ...........

July 11.. ...........

July 15.. ...........

July 19.............

July 23. ............

Tlllv 97

August 27..........

Octobers..........

October 10.........

October 13.........

October 18.........

October 21... ......

October 23.. .......

October 25. ........

October 28. ........

November 4... .....

November 12.......

November 23.......

December 2. .......

December 14.......

December 22 .......

Area of 

section.

Sq.ft. 

505

598

437

388

348

327

296

254

236

233

221

199

185

1,425

781

891

463

438

363

329

676

569

666

640

1,332

582

561

950

1,065

1,033-

976

961

918

855

818

782

760

713

1,157

693

649

618

595

578

574

576

560

Gage 

height.

Feet. 

0.8

1.0

.1

- .2

 .4

_ a

- .8

-1.0

-1.1

-1.1

-1.2

-1.4

-1.5

3.6

2.3

2.8

.5

.4

 .4

2.3

1.5

2.1

2.0

5.7

1.6

1.5

4.0

4.8

4.5

4.2

4.1

3.7

3.4

3.2

3.0

2.9

2 7

4.85

2.6

2.3

2.1

2.0

1.9

1.8

1.8

1.7

Discharge.

Sec. ft. 

120

162

94

55

42

37

31

25

24

24

a 00

"00

1,824

325

499

88

83

48

55

273

136

239

205

3,042

162

142

1,445

2,068

1,587

1,191

1,220

988

792

643

521

466

391

2,371

354

264

239

167

153

163

163

150

a No flow August 19,23, and 27,1901.
EIO SALADO. 147

Discharge measurements of Rio Salado near Guerrero, Tamaulipas, Mexico, in 1902.

[By D. de Lassaulx.]

Date.

March 4. ...........

March 12...........

March 30...........

April 7.............

April 11............

April 15............

April 20............

April 29............

May3..............

May 10.............

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

May 24.............

May 28.. ...........

June 23...... .......

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

July 11...... .......

Area of 

section.

Sq. ft. 

542

533

522

504

484

462

466

447

466

439

397

376

359

335

311

308

296

276

263

249

1,214

589

420

371

988

786

603

453

536

395

306

252

251

226

198

183

579

>M7

304

226

204

Gage 

height.

Fed. 

1.5

1.5

1.4

1.3

1.2

1.1

1.1

1.0

1.1

1.1

1.0

1.0

.8

.6

.4

.3

_ <y

.2

 .3

.6

4.75

1.9

1.2

.8

.5

3.9

3.3

2.2

1.1

1.5

.2-

_ 2

 .6

s

 .9

2.0

1.1

.0

 .7

 .8

Discharge.

Sec.-ft. 

132

127

117

111

85

73

"167

62

65

82

85

61

73

103

51

46

42

29

27

23

21

10

0

&2,222

212

115

74

48

1,360

697

259

70

136

73

35

32

20

10

cO

 CO

200

78

30

8

cO

Date.

July 15.... .........

TllHr OQ

October 2..........

October 19.........

Area of 

section.

Sq.ft. 

178

167

155

143

555

1,009

438

296

244

218

193

174

163

150

137

672

910

601

430

1,860

753

542

918

1,619

872

620

1,883

2,666

879

662

553

504

478

755

638

510

447

418

883

1,410

914

688

576

502

472

446

height.

Feet. 

 1.0

 1.1

- 1 °

 1.3

+ 1.9

4.2

1.1

.1

- .4

- .6

- .8

- 1.0

- 1.1

- 1.2

- 1.3

2.05

3.3

1.7

.6

7.75

2.5

1.4

3.4

6.7

3.0

1.7

7.6

11.1

3.0

1.5

.9

.5

.4

2.1

1.4

.6

2

.0

2.85

5.35

3.1

1.8

1.1

.6

.4

.2

Discharge.

Sec.-ft. 

c9

cO

C0

ce

12?

74?

59

18

12

c0

ce

c@

cO

C0

271

792

165

86

7,198

352

164

91?

4,884

716

154

6,955

14,257

585

168

70

61

55

254

148

69

41

2T

513

2,942

596

183

81

58

55

34

 > Measurement, January 27,1902, rejected.

& Measurement, April 15,1902, made by floats.

« June 17, 21, July 11,15,19, 23, 26, August 19, 23, 28, September 1, 5,1902; no flow.
148 SURFACE WATER SUPPLY, 1907-8.

Discharge 'measurements of Rio Salado near Guerrero, Tamaulipas, Mexico, in 1903.

[By D. de Lassaulx.]

Date.

MayS..............

May 20. ............

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

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

July 6..............

July 11... ..........

July 23. ............

Area of 

section.

Sq.ft.

30

on

70 c

473

31

30

2909

29

29

29

29

590

442

396

844

661

541

536

874

610

2,040

3,431

2,294

2,282

2,123

2,498

2,006

1,867

1.795 9 igo

Gage 

height.

Feet. 

0.0

.19

o

_ 3

- .3

- .4

- .4

_ ^

1.3

2

2.95

1.9

1.1

3.1

1.6

2.7

8.6

14.25

5.6

5.0

5.0

4.3

6.1

7.05

4.0

3.7

3.3

3.0

5.05

Discharge.

Sec.-feet.

a8

«60

«9

«7

06

a6

a5

a5

a5

143

187

132

559

211

145

100

6S2

137

483

10,005

20,220

2,792

2,297

1,391

4,634

6,065

1,224

906

575

473

2,455

Date.

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

September 16. ......

September 29.......

October 2..........

October 10.........

October 22. ........

October 26.........

October 30.........

November 7. .......

December 7 ........

December 27.......

Area of 

section.

Sq.ft. 

2,719

3,241

1,728

1,995

1,452

1,896

1,668

1,468

1,291

1,271

1,245

1,483

1,291

1,887

1.456

1,303

1,745

1,495

1,552

1,413

1,344

1,277

1,240

"1,354

1,224

1,193

1,137

1,108

82

107

17

16

15

15

17

16

Gage 

height.

Feet. 

7.4

9.75

2-7

4.7

2.0

4.2

2.95

2.1

1.4

1.3

1.1

2.3

1.3

4.5

2.3

1.5

3.85

3.0

3.0

2.5

2.1

1.9

1.6

2.2

1.5

1.4

1.1

1.0

.8

.9

.5

.5

.5

.5

.6

.5

Discharge.

Sec.-feet. 

6,841

11, 242

424

1,876

259

1,483

463

278

6319

153

142

343

156

1,719

346

315

1,164

636

620

412

296

231

179

345

178

162

136

123

«66

o!28

014

a 14

a 14

a 14

a 16

a 15

a Measurement made by wading at rocks January 6 to February 

27,1903.

6 Strong wind up stream August 28, 1903. Measurement rejected.

NOTE. No records available for March and April, 1903.

, and November 19 to December
RIO SALADO. 149

Discharge measurements of Rio Salado near Guerrero, Tamaulipas, Mexico, in 1904.

[By D . de Lassaulx.]

Date.

February 22....... .

March 1. ...........

March 13...........

March 17.......... .

March 25.... .......

March 29...........

April 18. ...........

April 23............

April 27............

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

May 4..............

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

May 16. ............

May 20. ............

May 24. ............

June 18..... ........

Area of 

section.

Sq.-ft. 

90

90

91

81

16

15

7^

72

73

82

75

71

71

67

68

65

fi/l

63

63

61

61

1,110

1,385

1,111

72

68

63

61

61

2,598

1,005

1,156

2,633

1,109

1,034

2,800

1,081

92

Gage 

height. .

Feet. 

0.9

.7

.7

.6

.5

.4

.4

.4

.5

.7

.5

.3

.3

.1

.0

- .1

- .2

- .3

- .4

 .4

1.0

2.4

1.0

.1

_ 2

- .4

8.05

1.0

1.2

8.55

1.9

1 i

1 60

9.45

90

Discharge.

Sec.-ft. 

667

a 65

«56

a 15

«45

«47

a60

«21

a 15

a 13

all

all

121

990

19O

a 34

a 13

7 QfiJ.

Ill

8,752

776

201

234

11 949

QnQ

200

Q70

Date.

June ^7

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

July 5... ...........

July 29.. ...........

OnfrtViar fi

October 14

December 1

December 6

December 10

December O(j

Area of 

section.

Sq.-ft. o

71

65

67

67

64

102

66

63

1,066

1,107

72

72

66

63

2,134

2,333

2,409

2,654

2,272

2,500

2,385

2,276

2,227

2,194

2,194

2,102

2,039

2,022

1 977

1,932

1,950

1 Q19

1 R71

1,879

1 844

Gage 

height.

Feet. 

0.30

.20

- .1

.0

 3

.8

.0

- .3

1.6

1.0

2

.3

- .3

7.0

8.1

7.9

9 ft

7.2

6.6

6.4.

6.1

S Q

5 7

*; fi

5.6

5.8

5.2

5.0

4 9

4.7

4.5

4.7

4.4

4.2

4.1

3 Q

3.9

Q 7

Discharge.

Sec.-ft. 

a 43

«41

a 16

a 21

a 21

a 15

85

a 19

a 16

206

124

a40

a45

a 19

a 15

6,148

8,142

6,111

8,089

5,123

4,848

4,392

3,890

3,691

2,955

2,986

3,287

2,443

2,174

2,038

1,974

1,600

2,320

1.811

1,578

1,442

1,385

1,174

1,159

967

a Measurements made by wading at rocks below station. 

NOTE. River dry July 14-28,1904.
150 SUKFACE WATEE SUPPLY, 1907-8.

Discharge measurements of Rio Salado near Guerrero, Tamaulipas, Mexico, in 1907.

[By D. de Lassaulx.]

Date.

March 2............

March 10...........

Marchl4.. .........

March 26. ..........

April 2.............

April 6.............

April 10. ...........

April 15............

April 19............

April 27............

May 2. .............

May 6.. ............

May 10. ............

May 13. ............

May 21. ............

May 29. ............

June 19. ...........

June 24. ...........

July 2..... .........

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

Area of 

section.

Sq.ft.

1,884

1,892

1,845

1,842

1,818

1,806

1,775

1,772

1,770

1,782

1,775

1,764

1,728

1,723

1,702

1,653

1,661

1,638

1,618

1,639

1,643

1,654

1,627

1,595

1,591

1,570

1,572

1,543

1,467

1,657

1,959

1,503

1 KAC

2,295

1,748

1,373

1,339

1,285

1,502

1,731

1,631

1,577

2,561

Gage 

height.

Feet. 

3.9

3.8

3.7

3.6

3.6

3.5

3.5

3.5

3.4

3.3

3.3

3.1

3.0

2.9

2.8

2.6

2.5

2.4

2.3

2.2

2.1

2.0

2.0

1.9

1 9

0 9

1 Q

1.8

2.8

3 9

4.3

2

0

2.0

2.0

6.0

3.3

1 Q

1.4

1.1

1.0

2.0

3.6

3.1

2.8

7.5

Discharge.

Sec.-ft. 

816

742

740

748

675

671

604

594

606

601

584

571

544

511

489

439

429

407

386

423

425

341

307

284

282

267

267

388

OK.1

259

442

865

1,216

OCQ

556

213

194

178

289

662

383

Date.

July 6.... ..........

July 14.............

July 18. ............

July 29. ............

December j^j.

Area of 

section.

Sq.ft. 

1,867

1,494

1,511

1,477

1,451

1,438

1,350

1,290

1,266

1,196

1,152

30

99

96

?5

24

1,590

1,298

1,246

9 Sgg

3,311

1 7Q^t

1,587

1,527

1,842

1 7^7

1,801

2 nni

1,928

1,862

1 830

1,784

1,747

1,755

1,672

1,694

1,669

1,669

Gage 

height.

Feet. 

4.1

2.5

2.6

2.3

2.2

1.9

1.8

1.7

1.5

1.3

1.0

.8

.7

.5

.4

.3

2.8

2.1

1.5

1.3

9.45

10.8

3.4

^ 1

3.6

4.6

4.2

4.6

5.2

4 9

4.7

4.5

4.4

4.5

4.5

4.4

4.3

4.2

4.2

4.1

Discharge.

Sec.-ft.

OOQ

573

OK7

OQA

400

071

qqe

297

258

90 K

216

1 Qfi

184

164

160

20

1 3

9

9

7

383

qen

196

185

9,607

13, 159

QQl

^Q9

504

644

907

768

1,686

2

-|oe

1,897

1 7QK

1,782

1,295

1,232

1,204

1,209

1,104

1,033

959

969
KIO SALADO. 151

Discharge measurements of Rio Salado near Guerrero, Tamaulipas, Mexico, in 1908.

[By D. de Lassaulx.]

Date.

February 23........

March 2............

March 6............

March 14...........

March 22...........

March 24...........

March 28...........

April 2.............

April 6.............

April 11............

April 15............

April 19............

April 23............

April 27............

May 2. .............

May 6. .............

May 15. ............

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

May 23.............

May 28. ............

June 10............

June 23............

July 2..............

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

July7..............

Area of 

section.

Sq.ft. 

1,631

1,566

1,523

1,503

1,485

1,492

1,467

1 467

1,429

1,391

1,370

1,352

1,323

1,323

1,305

1,273

1 980

1,372

1,272

1,249

2,034

1 802

1,601

1,701

1,517

1,281

1.224

1,908

i .IQP;

1,305

1,112

1,486

1,169

1,095

1,059

29

64

1,207

Gage 

height.

Feet.

3 9

3.7

3.6

3.5

3.4

0 0

3.1

3.0

0 ft

2.8

2.7

2.6

2.5

2.4

2.3

2.3

2 2

2.0

2.0

3.2 2.4

1.9

1.8

5.8

4.6

3.5

4.2

3.1

2.6

2.2

1.9

5.6

3 ft

2.1

1.3

3 7

2.2

1.6

1.2

1.0

.7

2.4

.9

2.2

4 95

Discharge.

Sec.-ft.

<v31

732

544

391

362

356

292

268

OJ.Q

243

234

219

200

442

258

194

182

2,746

1,717

575

883

970

237

917

2,586

468

221

173

566

178

164

156

a 16

a 29

1,627

Date.

July 10. ............

July 26.............

July 30. ............

October 14

December 10

Area of 

section.

Sq.fi 

1,165

1,727

1,115

123

141

1,648

1,485

1,962

2,079

1,783

1,742

1,762

1,603

1,465

1,419

1,386

1,656

1,555

1,265

1,227

1,180

1,176

2,281

1,418

1,133

1,129

1,082

1,860

1,133

1,033

1,044

1,031

1,002

1,019

1,000

994

1,014

995

987

983

979

956

950

951

948

Gage 

height.

Feet. 

2.1

4.6

2.0

1.4

1.7

2.1

4.4

3.7

6.0

5.8

5.0

4.9

5.3

4.5

4.2

4.0

3.8

5.2

4.8

3.6

3.4

3.3

3.3

7.3

4.4

3.2

3.2

3.0

6.2

3.3

2.9

2.9

2.9

2.7

2.9

2.7

2.7

2.7

2.6

2.6

2.6

2.6

2.5

2.5

2.5

2.5

Discharge.

Sec.-ft. 

168

1,438

156

a 59

«75

a 124

1,130

596

2,792

3,203

1,774

1,519

1,953

1,146

927

816

665

1,910

1,707

501

439

334

347

5,931

1,141

257

256

179

3,442

289

153

153

146

133

143

135

136

133

125

124

123

128

119

118

120

119

a Measurement made by wading at rocks below station June 23, July 2, 22 to 30,1908.
152 SUKFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Rio Salado near Guerrero, Tamaulipas, Mexico, for 1900

to 1904, 1907, and 1908.

Day,

1900.0 

1.. .............

2...............

4...............

6...............

7...............

8...............

9

10...............

11...............

12...............

13...............

14. ..............

1 f*

16...............

17...............

18...............

19...............

20. ..............

21...............

22. ..............

23...............

24. ..............

25. ..............

26...............

27.............

28. ..............

29. ..............

30...............

31...............

1901.6 

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

Jan.

2.4

2.4

2.4

2.4

2.3

9 3

9 1

2

0

2.3

2.2

2.2

2.2

2.2

2.15

2.1

2.1

2.1 

2.0

1.95

1 Q

1.9

1.9

1 Q

1.8

1.8

1.8

1.75

1.7

Feb.

1.7

1.7

1.65

1.6

1.75

1.6

1.5

1.5

1.5

1.5

1.5

1 45

1.4

1.4

1.4

1.4

1.3

1.3

1.3

1.2

1.2

1.2

1.1

1.1

1.1

1.1

1.0

1.0

Mar.

.......

1.0

1.0

1.0

.9

1.1

1.1

.75

.6

.6

.6

.6

.6

.55

.5

.45 

.4

.4

.25

.2

.2

.15

.15

.15

.12

Apr.

9 gp

9 g5

9 55

9 45

2.35

3.6

.1

.1

.1

.05

.0

- .1

.1

_ 9

_ 9

9S

- .3

0

- .32

00

- .4 

- .4

- .5

.5

- .62

- .6

.6

.6

- .75

.72

- .7

- .7

May.

6.35

5.4

4.3

3.9

2.9

2.6

2.4

2.3 

2.15

1.95

1.85

1.75

1.7

1.55

3.8

7.25

8.2

5.35

4.7

4.3

4.55

4.55

4.8

4.05

3.55

3.45

3.25

3 1 f»

3.05

- .7

7.65

4.7

3.4

2.85

3.15

3.45

4.9

9.05

5.85

4.6

3.7

3.15

3.0

9 Q

2.88

2.82

o 70

3.30 

4.5

3.7

3

1

2.85

2.72

4.7

4.05

2.85

3.15

June.

5.4

4.1

4.3

4.25

6.85

7.7

3.95

3.6 

3.25

2.95

2.8

2.65

2.55

2.45

2.4

2.25

2 2

2.1

2.05

1.95

5.9

4.75

3.9

2.75

2.4

2.55

2.2

1.95

1.85

1.7

2.52

2.42

2.32

4.18

3.05

2.15

1.95

1.95

2.0

1.82

1.65

1.52

1.48

1.38

1.2

1.12

1.02 

.95

.82

.7

.7

.65

.6

.65

2.45

6.25

4.12

July.

2.35

5.35

5.6

4.1

3.05

2.7

2.95

2.55 

2.35

2.15

2.0

1.85

1.75

3.25

4.9

9.3

8.2

4.4

3.05

2.95

2.55

2.4

2.3

2.2

2.15

2.1

2.05

2.45

2.25

4.55

4.9

2.7

2.1

2.1

1.6

1.22

.95

.75

.6

.8

1.2

1.0

.65

.35

.2

.1

.0

.35

.05

- .2 

- .3

- .35

- .4

- .45

- .5

- .5

- .55

- .6

- .6

- .7

Aug.

4.6

3.7

3.15

3.2

2.55

3.3

3.4

4.45 

5.2

6.55

7.65

7.75

6.85

5.35

4.75

4.55

4.7

4.6

4.5

4.4

4.3

4.2

4.4

4.3

4.3

4.2

4.15

4.1

4.0

4.0

3.9

- .7

- .8

- .8

- .8

 .9

- .9

- .95

- .9

-1.0

-1.0

-1.1

-1.1

-1.1

-1.1

-1.1

-1.1

-1.1

-1.2

-1.2 

-1.2

-1.25

 1 3

-1.4

-1.4

-1.4

-1.5

-1.5

-1.5

-1.5

-1.5

Sept.

3.9

4.55

4.25

4.15

5.6

5.3

4.65

3.95 

3.8

3.75

3.7

3.6

3.55

3.5

3.5

3.5

3.45

3.4

3.35

3.3

3.3

3.3

3.3

3.2

3.2

4.6

4.25

4."15

4.05

4.0

1.55

1.6

4.0

4.7

5.35

2.7

2.3

2.15

1.75

1.55

2.35

1.2

.85

.5

.6

.4

.4

.45

..25 

.05

.10

.25

.30

.35

.4

2.6

3.65

3.0

2.3

1.85

Oct.

3.9

3.8

3.75

3.7

3.65

3.6

3.55

3.5 

3.5

3.5

3.5

3,5

3.45

3.4

3.4

3.4

3.35

3.3

3.35

3.4

3.5

3.65

3.7

3.7

3.75

3.85

4.05

3.8

3.75

3.7

3.7

1.65

1.5

1.7

2.25

2.3

2.2

2.15

2.1

2.05

2.0

2.0

2.0

4.45

3.1

2.2

1.85

1.75

1.6

1.6 

1.6

1.5

3.05

3.65

4.5

4.8

4.65

4.55

4.45

4.35

4.3

4.2

Nov.

4.2

4.1

4.1

4.05

4.0

3.9

3.8

3.7

3.6

3.5

3.4

3.35

3.3

3.25

3.2

3.2

3.1

3.1

3.05 

3.0

3.0

2.9

2.9

2.8

2.75

2.7

2.7

4.15

4.3

3.0

Dec.

*

2.8

2.8

2.8

2.7

2.7

2.65

2.6

2.6

2.6

2.5

2.5

2,5

2.5

?, 5

2.5

2.45

2.6

2.55

2.45

2.4

2.3

2.25

2.2

2.2

2.1

2.1

2.05

2.0

2.0

1.95

1.9

1.9

1.9

1.9

1.85 

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.7

1.7

1.7

1.65

1.6

Gage heights, for 1900 complete as far as Mexican records exist. & No flow August 19-31,1901.
EIO SALADO. 153

Daily gage height, in feet, of Rio Salado near Guerrero, Tamaulipas, Mexico, for 1900 

to 1904, 1907, and 1908 Continued.

Day.

1902.a 

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

1903. & 

I...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13. ..............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.55

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.45

1.4

1.4

1.4

1.4

1.4

1.4

1.3

1.3

1.3

1.3

1.2

1.2

1.2

1.2

1.2

1.15

1.1

1 1

1.1

1.1

1.1

.0

.0

- .05

- .1

- .1

- .1

- .1

- .15

- .2

- .2

_ 2

- .2

_ o

- .05

.1

1.75

1.6

1.0

.7

.45

.35

.2

.15

.1

.0

.0

- .05

- .1

- .1

- .1

- .2

Feb.

1.1

1.1

1.1

1.05

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.9

.9

.9

.9

.9

.85

.8

.8

- .2

- .2

- .2

- .25

- .3

- .3

- .3

- .3

- .3

- .3

- .3

- .3

.3

- .4

- .4

- .4

- .4

_ 4

- .4

- .4

- .4

- .4

- .4

- .4

_ 4

- .4

Mar.

0.8

.75

.65

.6

.5

.5

.4

.4

.3

.29

.1

.0

.0

- .1

_ 9

_ 9

.2

.25

- .3

- .3

- .35

Apr.

-0.4

.5

- .5

K

- .55

- .6

- .6

- .7

- .7

- .7

0

- .8

- .8

o ce

4 DC

4.05

3

1

2.5

2.2

1 9

i a<;

1.75

1.55

1 ^f;

1 9

1.05

a<;

.85

.8

.7

- .6

- .6

- .6

- .7

- .7

- .7

- .7

- .8

 8

- .8

- .9

- .9

- .9

- .9

2.45

4.0

2.8

May.

0.6

.55

.45

.4

0

4.15 3.8-

9 95

3.6

3

1

2 EC

2.1

1.95

2

nc

1.65

1.4

1.2

1.25

1.05

.8 '

.55

.35

.75

1.5

1.35

1.15

.95

.75

.55

.45

2.2

1.85

1.55

1.35

1.15

1.0

2.05

2.8

2.1

3.45

3.2

2.45

1.9

1.4

1.05

.85

.65

.45

.35

1.95

2.85

2.25

1.85

1.55

1.3

1.05

.95

1.7

June.

0

9K

.15

.05

.1

9C

0

QK

.45

.5

KK

.6

65

- .7

7K

Q

DC

g

g

.9

1.0

1 Q

1 9*\

1.05

.7

.35

.15

- .05

- .2

.95

3.3

2.95

2.35

9 9

1.9

1.5

1.3

1.25

1.5

2.7

2.8

8.85

11.8

14.85

17.5

14.2

9.15

7.05

6.45

6.05

5.75

5.55

5.35

5.25

5.3

5.0

4.85

5.5

5.15

July.

ft. 1

.35

- .4

.5

- .55

.6

.7

- .7

.7

.8

Q

.8

.9

g

1.0

-1.0

1.0

1.1

-1.1

1 °

1.2

1.3

1.3

1.3

2.05

4.4

2.05

1.55

4.55

4.35

4.25

5.75

6.6

6.75

5.4

4.5

4.15

3.95

3.85

3.75

3.7

3.65

3.55

3.5

3.4

3.3

3.2

3.15

3.1

3.0

2.95

2.85

2.8

3.2

4.75

4.2

3.45

7.35

Aug.

1 9

.8

.45

.25

.05

05

Q

.4

.5

.55

.6

- .7

- .7

.8

.8

- .9

Q

1.0

1.0

1.0

1.0

1.0

1.1 -1.1

-1.1

1.2

9.4

5.8

4.15

3.0

2.65

2.45

2.3

2.2

4.65

3.4

2.8

o g

4.05

4.15

3.65

2.9

2.95

2.4

2.2

2.1

2.0

1.65

1.45

1.35

1.25

i 1.2

1.1

Sept.

-1.2

1 °

-1.3

1 q

_ 1 Q

1.4 -1.4

2.15 ? i

2.6

2.1

9 ft

9 ft

1.6

1.45

1.05

g

7C

.55

7.25

4.7

4.1 9 95

2.4

2.05

1.85

1.55

1.35

1.2

4.4

1.35

1.25

1.05

1.0

.9

1.2

1.1

1.0

.9

.85

2.05

2.15

1.45

1.05

1.15

1.3

1.15

3.25

4.45

3.5

3.35

2.8

2.45

2.25

2.05

1.9

1.75

1.65

1.5

1.5

Oct.

2.05

6.65

6.2

5.0

4.1

2

QK

3.5

2 OK

O 9

1 95

1.65

1 4^

1.25

2.1

8 A

10.6

6,1

3

QK

2 Q

2.6

2 05

1.75

1.45

1.25

1.05

1.0

.9

.8

.7

.6

.5

2.6

3.8

3.3

3.0

3.0

3.0

3.3

3.15

5.35

2.95

2.75

2.6

2.5

2.45

2.4

2.45

2.2

2.1

2.0

1.9

1.9

1.85

1.8

1.75

1.7

1.6

1.55

2.0

1.95

2.1

1.85

Nov.

0 45

.4

.55

QC

2.0

1.65

1.4

1 f?C

1 OC

1.05

OK

.75

.6

.4

.2

.0

1.65

1.45

1.6

2.1

1.7

1.45

1.25

1.25

1.6

1.55

1.65

1.5

1.45

1.35

1.3

1.2

1.15

1.1

1.1

1.0

1.0

1.0

.95

.8

.75

.7

.7

.7

.9

.7

.65

.6

.6

.6

.6

.6

Dec.

4.1

O QC

3 1

5.15

3 7

Q A

2

0

3

K

1.7

1.5

1.5

1.4

1 9*

1.1

1.0

g

.7

.6

.55

.5

.4

.3

.25

.2

.15

.1

.05

.6

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.55

.5

.5

.5

.6

.6

.6

.5

.5 -

.5

.5

.55

.6

.7

a No flow April 8-13, June 15-22, July 11-27, and August 17-September 7,1902. 

& Gage heights for 1903 complete so far as Mexican records exist.
154 SUEFACE WATEE SUPPLY, 1907-8.

£>aily gage height, in feet, of Rio Salado near Guerrero, Tamaulipas, Mexico, for 1900 

to 1904,1907, and 1908 Continued.

Day.

1904.0 

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

1907. 

1..... ..........

2...............

3. ..............

4...............

£. ..............

6...............

7...'............

8...............

9...............

10. ..............

11...............

12...............

13...............

14. ..............

15. ..............

16...............

17...............

18...............

19...............

20...............

21. ..............

22. .

23. ..............

24. ..............

25. ..............

26. ..............

27. ..............

28...............

29...............

30. ..............

^1. ..............

Jan.

0.9

.8

.8

.8

.7

.7

.7

.7

.7

.65

.7

.65

.6

.6

.6

.6

.6

.6

.5

.5

.4

.4

.4

.4

.4

3.9

3.9

3.9

3.8

3.8

3.8

3.8

3.8

3.8

3.7

3.7

3.7

3.7

3.7

3.7

3.6

3.6

3.6 3.6'

3.6

3.6

3.55

3.5

3.5

3.5

3.5

q c

3.5

3.5

3.5

Feb.

0.4

.4

.4

.4

.4

.4

.5

.55

.65

.7

.7

.7

.6

.6

.5

.5

.4

.4

.35

.3

.3

.3

.3

.3

 >

.2

.2

3.5

3.5

3.4

3.4

3.4

3.4

3.3

3.3

3.3

3.3

3.3

3.2

3.2

3.2

3.2

3.2

3.2

3.1

3.1

3.1

3.1

3.0

3.05

3.0

3.0

Mar.

0.1

.1

.1

.0

.0

.0

.0

 .1

- .1

- .1

- .1

- .1

- .2

- .2

- .3

- .3

- .3

- .3

- .3

- .3

- .3

- .3

- .4

- .4

- .4

- .45

- .5

3.0

2.9

2.9

2.9

2.8

2.8

2.8

2.8

2.7

2.7

2.7

2.6

2 ft

2.6

2.6

2.6

2.5

f) K

2

K

2.4

2.4

2.3

f) q

2.2

2

f)

2.2

2.1

2.1

Apr.

-0.5

.17

1.1

.85

1.0

2.05

1.7

1.3

.95

.75

.55

.3

.2

.1

.0

- .15

 2

- .3

- .3

- .4

2.1

2.1

f) 1

2.1

2

1

f) 1

f) A

o A.

2.0

2.0

2.0

1 Q

1 O

1 9

1 9

1 Q

1.8

1.8

2.4

*> 7

2.4

2

1 e

f) A

1 9

1 9

1 Q

1 S

1.8

1.7

May.

-0.4

 .5

- .5

6.6

3.2

2.1

1.4

1.1

4.0

1.9

1.2

.9

3.4

4.55

8.6

8.05

6.1

4.3

" 2.7

2.35

2.05

1.65

1.4

1.85

2.4

2 OK

1.9

1 9

1 Qt;

2.25

2

KC

o 7

2.25

1 95

1.75

4.8

3.7

3 Q

2.85

2.55 "> 9z

2.1

2 A

*? 9£

2

*je

2 At

1 95

1 9

5

n

3.85

3.1

2.4

2.05

June.

1.5

1.25

1.15

.95

1.25

8.45

6.3

4.25

3.35

2.55

2.0

1.8

1.65

1.45

1.25

1.05

.9

.8

AK

.3

.35

.45

.3

.3

.2

.15

.1

.0

1 9

1.75

1.6

1.45

1.4

1 0

1 O

1.2

1.2

1.1

1.0

1.0

1.0

.8

.8

1 °.*i

1.8

1.55

1.85

1 7%

3

0

3

c

3.25

0 I

3

1

3 A,

3.0 *> o

July.

-0.1

- .1

- .2

- .1

.0

.0

 .1

.0

.0

- .1

- .2

_ 2

- .3

- .3

- .4

- .4

- .5

- .5

- .6

- .6

- .6

- .7

- .7

- .7

- .8

- .8

.85

.7

.3

.25

2.9

2.8

7.2

8.6

6.05

0 QK

4.6

3

ne

3.2

3.05

2.8

2.45

2.9

3

«?K

2

0

o 55

2.4

2.55

2.4

2.4

2.4

2.3

2

0

2.2

2

O

2.2

2.2

2.2

Aug.

0.1

.0

- .1

- .2

- .3

- .35

- .4

- .4

- .45

- .5

- .5

- .5

- .5

1.75

1.75

1.45

1.15

.95

.75

.55

.3

.2

.1

.35

.45

.25

.05

.05

- .25

2.1

2.1

2.0

2.0

1 Qf^

1 Q

1 9

1.8

1.8

1.8

1.75

1.7

1.7

1.65

1.6

1.5

1.5

1.45

1.55

1.55

1.4

1 °.

1.2

1.1

1.1

1.0

1.0

.95

g

.8

Sept.

-0.3

- .4

- .4

- .5

- .5

- .5

4.35

7.9

6.55

7.8

7.95

8.85

8.6

11.0

14.5

13.05

12.5

12.45

10.2

7.95

8.2 '

8.7

8.95

9 2

10.4

8.6

7 f*

7.15

6.95

6.65

.8

.8

.8

.7

.7

.65

.6

.6

.5

.4

q

q

.45

.85

2.75

2.35

2 AC

1.85

1.7

i 71;

Oct.

6.6

6.6

6.6

6.55

6.5

6.4

6.25

6.2

6.1

6.0

6.0

5.95

5.9

5.85

6.15

6.05

5.8

5.7

5.7

5.85

6.0

5.7

5.6

5.5

5.7

5.5

5.6

5.55

5.4

5.3

1.6

1.5

1.3

1 0

1.5

9 Q

11.15

5.6

4.25

3.85

0 C

3.4

3

0

3

f)

Q *?

q i

q 1

3.15

3 OK

3 7

4 45

4.6

A QC

4.2

A. 1 t\

4.05

Nov.

5.65

5.8

5.7

5.4

5.3

5.2

5.2

5.1

5.1

5.0

5.0

4.95

4.9

4.8

4.8

4.8

4.7

4.7

4.7

4.6

4.6

4.5

4.5

4.5

4.45

4.4

4.95

5.15

5.0

4.8

4.5

4.6

4.75

4.95

5.3

5.3

5.2

5.15

5.0

5.0

4.9

4 9

4.9

4.8

4.8

4.7

4.7

4.6

4 6

4.5

4.4

4.4

4.4

4.4

4.3

4.3

Dec.

4.7

4.6

4.5

?.45

4.4

4.35

4.3

4.3

4.3

4.2

4.2

4.2

4.1

4.1

4.1

4.0

4.0

4.0

3.9

3.9

3.9

3.9

3.9

3.9

3.8

3.8

3.8

3.7

3.7

3.7

3.7

4.4

4.5

4.5

4.6

4.6

4.5

4.5

4.5

4.5

4.4

4.4

4.4

4.3

4.3

4.3

4.3

4.3

4.3

4.2

4.2

4.2

4.2

4.15

4.1

4.1

4.1

4.05

4.0

4.0

4.0

a No flow July 15-27,1904.
RIO SAN JUAN DRAINAGE BASIN. 155

Daily gage height, in feet, of Rio Salado near Guerrero, Tamaidipas, Mexico, for 1900 

to 1904, 1907, and 1908 Continued.

Day.

1908. 

1.. .............

2...............

4...............

5...............

6...............

8. ..............

9.........=.....

10...............

11...............

12...............

13............... 

14...............

15...............

16.-.-.-.....-...

17...............

18...............

19

20...............

21...............

22...............

23...............

24...............

25. ..............

26...............

27.--.-..........

00

29...............

30. ..............

31...............

Jan.

4.0

4.0

3 9

3 9

3.9

3.9

3.8

3.8

3.8

3.7

3.7

3.7

3.6 

3.6

3.6

3.6

3.5

3.5

3.5

3.5

3 ^

3.4

3.4

3.4

3.4

3.3

3.3

3

0

3.3

3.3

3.2

Feb.

3.2

3.1

3.1

3.1

3.1

3.0

3.0

3

ft

3.0

3.0

2.9

2.9

2.9

2.8

2.8

2.8

2.7

2.7

2.7

2.6

2.6

2.6

2.5

2.5

2.5

2.5

2.4

Mar.

2.4

2.4

9 1

2.3

2.3

2.3 "> 2

2.25

2.3

2.1

2.1 

2 2

2.1

2.1

2.0

2.0

2.0

2.0

2.0

3.1

2.8

2.5

*> 3^

2.15

2.05

2.0

Apr.

1 9

1.9

1 Q

1 9

1.9

i K

1.7

1.7

5.7

5.4

4.5

3.6

3.45

3. 85

4 °

4.95

4.2

3.55

3.25

3.05

2 85

2.75

May.

2.7

2.6

2.5

2.4

2.3

2.2

2.1

2.0

1 9

1.9

1 9

1.8

6.1

6.2

3.35

2.85

2.35

2.25

2.05

1.9

1.8

1.05

1 4<;

1 3

1.3

1.2 1 9

June.

4 OK

3.65

3 9

2

cK

2.3

0 2

1 95

1.75

1.6

1.6

1 f»

1.4

1.3 

1.2

1.1

1.0

9

9

.7

2.15

1.5

July.

1.0

.9

1 9

2.1

9 1^.

3

QK

2.55

2.1

2.05

1.5

3.4

2.25

1.9

1.65

1.4

1.6

1.85

1.65

1.5

1.6

1.4

1.1

<> 0

3.75

Aug.

4.15

4.8

4.2

3

7K

3 a

3.8

3.7

6.15

6.85

5.5

5.8

5.25

5.1 

5.1

5.0

5.0

4.9

4.9

4.9

4.8

5.35

5.85

5.15

4.75

4.7

4.6

4.5

4.5

4.4

4.35

4.3

Sept.

4.2

4.15

4.85

4.2

4.1

4.0

3.95

3 9

3.9

3.8

3.95

3.85

3.8 

4.4

4.85

4.0

4.75

4.&

3.8

3.65

3.55

3.5

3.5

3.5

3.4

3.4

3.4

Oct.

3.3

3.3

3.3

3.2

3.2

3.3

3.35

7.0

5.6

4.05

3.55

3.4

3.3 

3.2

3.2

3.1

3.1

3.15

3.1

3.1

3.0

6.15

3.7

3.35

3.3

3.3

9 Q

2.9

2.9

9 Q

Nov.

9 Q

2.9

2 Q

2.8

2.8

2.8

2.9

2.8

2.8

2.7

2.7

2 7

3.2 

3.05

2.9

2.9

2.9

2.8

2.7

2.7

2.7

2.7

2.7

2.7

2.6

2.7

2.6

2.65

Dec.

2.6

2.6

2.6

2.6

2.6

2.6

.6

0

.6

.6 

2.6

2.6

2.6

2.6

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

RIO SAN JUAN NEAR LA QUEMADA AND SANTA ROSALIA RANCH,

TAMAULIPAS, MEXICO.

The Sail Juan is a long torrential stream entering the Rio Grande 

15 miles below Roma and 790 miles by river below El Paso. Six 

miles above its mouth is the town of Camargo.

The station was first established in 1900 near La Quemada, 12 

miles above Camargo, by the International Boundary Commission, 

but in time of heavy flood in the Rio Grande backwater reached 

the station, and on July 14, 1902, it was moved 6 miles farther 

upstream to its present location near Santa Rosalia ranch, Tamaulipas, Mexico. It is now above backwater.

The river bed at both stations shifts constantly and frequent discharge measurements have been made to determine closely the daily 

flow. Both banks are of sandy clay which are above high water and 

do not erode. The bottom of the river is sand which erodes slightly 

in flood.

Low water (no flow) is zero on the gage. The highest recorded 

flood, on September 16, 1904, reached 27 feet on the gage.

The observations at both stations have been made under the direction of. the Mexican section of the International Boundary Commission.
156 SURFACE WATER SUPPLY, 1907-8.

Discharge measurements and gage heights, 1900 to 1904, which 

have not hitherto been published by the United States Geological 

Survey, are given herewith, together with data for 1907-8.

Discharge measurements of Rio San Juan near La Quemada, Tamaulipas, Mexico, in 1900.

[By S. Jaso.]

Date.

Octobers..........

Area of 

section.

Sq.ft.

257

256

231

269

9gg

228

181

186

. 181

204

Gage 

height.

Feet. 

2.6

1.75

1.45

g

1.8

1 9

1.2

.8

.7

95

Discharge.

Sec.-ft. 

461

14

89

on

51

312

117

168

Date. Area of 

section.

Sq.ft. 

188

200

199

207

222 909

418

434

251

Gage 

height.

Feet. 

1.0

1.1

1.0

1.0

1.1

1.2

3.15

1.5

1.05

1.2

Discharge.

Sec.-ft. 

237

343

187

371

449

478.

1,737

840

418

43&

NOTE. Discharge measurements for 1900 complete so far as Mexican records exist.

Discharge measurements of Rio San Juannear La Quemada, Tamaulipas, Mexico, in 1901.

[By S. Jaso and A. Argandar.]

Date.

February 23........

February 28........

March 3............

March 7............

March 11...........

March 15...........

March 20...........

March 24. ..........

April 2.............

April 10. ...........

April 14............

April 19. ...........

April 23............

April 28&.. ........

May 5 &...........

May 11.. ...........

May 15.............

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

May 24.............

May 31.............

June 21 ............

JuneSO. ...........

July 6..............

July 10.............

Area of 

section.

* $,

272

272

272

272

244

251

251

200

200

194

194

194

189

184

174

1 PLK

149

144

144

144

125

125

86

0

483

241

216

271

315

271

1,531

243

217

205

188

188

2,470

372

1,565

Gage 

height.

Feet. 

1.2

1.3

1.25

1 1 n

1.3

1.3

1.3

1.0

1.1

.95

.9

.8

.8

.6

.5

.2

.1

.0

.0

.0

.0

.0

.0

3 15

1.1

1.4

2.0

1.5

1.3

..5

.4

19.35

1.8

Discharge.

Sec.-ft.

234

o!68

228

224

214

123

140

125

92

90

74

72

74

63

61

54

JQ

19

18

1 C

16

14

14

0

709

127

75

°.Q7

 7,097

134

Sd

60

37

37

« 15, 742 °°9

Date.

July 14............

July 18.............

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

July 30. ...........

October 4

October 30.........

Area of 

section.

Sq.ft. 

474

363

314

193

291

227

255

217

203

194

176

173

231

1,799

393

952

319

455

397

2,323

887

883

480

448

435

453

798

385

413

356

386

388

516

41 3

OQQ

281

QFL1

343

Gage 

height.

Feet. 

3.2

1.5

.8

.5

.7

1.0

1.6

1.1

.8

.6

.7

.4

1.2

14.2

1.8

7.6

2.1

3.05

2.3

15.6

6.25

6.3

3.7

3.2

3.0

2.6

4.3

4.1

3

C

2.9

2.6

2.6

2.6

11.7

3.5

2 Q

2.6

2.5

2

0

2.5

2.3

Discharge.

Sec.-ft. 

697

218

111

40

97

54

144

30

16

11

13

11

44

6,398

571

2,716

257

747

394

2,430

2,301

1,052

784

675 799

1,787

1,518

625

766

442

492

454

1,062

550

509

427

465

423

4S5

a Measurement January 11,1901, rejected.

6 No flow April 28 to May 9, 1901.

e Measurements June 5 and 30, and July 10,1901, made by floats.
BIO SAN JUAN DRAINAGE BASIN. 157

Discharge measurements of Rib San Juan near La Quemada, Tamaulipas, Mexico, in 1902.

[By A. Arg&ndar.]

Date.

March 9............

March 13...........

March 17. ..........

March 21...........

March 29.... .......

April 2.............

April 6.. ...........

Area of 

section.

Sq.ft. 

330

327

321

316

299

294

288

290

293

302

304

309

275

273

268

238

232

224

210

209

190

188

180

174

Gage 

height.

Feet. 

2.1

2.1

2.0

2.0

1 9

1.8

1.7

1.6

1.6

1.65

1.7

1.7

1.5

1.5

1.3

1.1

.9

.85

.8

.55

.5

.4

Discharge.

Sec.-ft. 

274

308

275

277

205

146

128

169

175

184

150

166

143

96

54

47

27

22

17

15

13

12

Date.

April 10. ...........

April 17............

April 22............

April 26............

May7. ...... ......

May 15............

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

May 28............

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

July7... ..........

July 11............

Area of 

section.

Sq.ft. 

169

261

1,463

292

276

215

1,534

375

229

210

241

196

187

157

146

145

141

137

125

122

103

782

375

Gage 

height.

Feet. - 

0.3

1.4

11.5

1.9

1.4

.8

12.7

2.4

1.1

.8

1.2

.7

.5

.3

.2

.1

.0

- .1

- .3

__ £

- .5

4.5

2.7

Discharge.

Sec.-ft. 

10

139

6,439

203

161

30

6,987

436

68

27

87

33

27

17

0

0

0

0

0

0

0

 1,991

504

a River dry June 6-July 5,1902. 

NOTE. This station was moved to Santa Rosalia ranch, 6 miles upstream, July 14,1902.

Discharge measurements of Rio San Juan near Santa Rosalia ranch, Tamaulipas,

Mexico, in 190%.

[By A. Arg&ndar and S. Jaso.]

Date.

July 15............

July 19............

July 23............

July 27............

July 23.... ........

Area of 

section.

Sq.ft. 

252

128

83

64

720

823

82

56

46

41

31

24

22

11

320

268

450

199

281

1,725

2,471

Gage 

height.

Feet. 

1.3

.4

.0

_ 9

5.9

16.0

7.0

.8

.5

.4

.1

.0

- .2

- .3

- .3

2.4

2.0

3.4

.4

1 9

10.9

15.05

Discharge.

Sec.-ft. 

157

56

28

7

2,456

9 QAJ.

2,822

30

16

9

5

4

0

0

0

362

222

599

35

225

6,832

10,818

Date.

October 10.........

October 19 .........

December 11

Area of 

section.

Sq.ft. 

397

291

188

2,494

473

294

211

1,901

177

146

113

. . 98

87

229

96

1,667

196

179

135

126

126

118

Gage 

height.

Feet. 

3.4

2.5

1.5

15.35

4.4

2.8

2.0

8.6

1.6

1.5

1.1

1.0

.8

2.15

.9

7.5

1.8

1.7

1.2

1.1

1.1

1.0

Discharge.

Sec.-ft. 

579

315

146

12,539

991

223

5,351

162

119

57

39

28

233

46

65,297

172

14R

85

78

82

68

a River dry August 25-September 5; also September 21 and 22,1902. 

6 Measurement made by floats December 2,1902.
158 SURFACE WATEE SUPPLY, 1907-8.

Discharge measurements of Rio San Juan near Santa Rosalia ranch, Tamaulipas,

Mexico, in 1903. 

[By S. Jaso.]

Date.

June 27..... .......

July 3. .............

July 7... ...........

July 11..... ........

July 15..... ........

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

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

July 29. ............

Area of 

section.

Sq.ft. 

233

194

203

217

131

100

87

72

3,177

275

78

115

3,778

654

577

501

one

498

Gage 

height.

Feet. 

1.9

1.5

1.6

6.2

1.7

.8

.4 >

.0

21.0

3.4

1.7

2.0

24.0

3.75

3.3

4.95

2.9

2.1

2.75

2.4

2.8

Discharge.

Sec.-ft. 

188

103

118

2,215

147

01

6

4

4

26,677

478

79

144

30,826

823

580

1,548

416

159

455

Date.

September 30......

Octobers..........

October 8 ..........

October 13.. .......

October 18... ......

October 26.........

October 30.........

November 9. .......

November 23. ......

Area of 

section.

Sq.ft. 

365

327

287

296

236

007

369

272

260

274

256

248

251

252

249

245

257

256

259

272

266

203

Gage 

height.

Feet. 

' 1.9

1.5

1.1

1.3

.8

.7

1.95

1.0

.9

LO

.9

.8

.8

.9

.9

.9

1.0

1.0

1.1

1.1

1.1

1.0

Discharge.

Sec.-ft. 

186

117

46

65

42

29

- 193

51

37

53

39

30

45

38

33

37

43

34

45

SO

44

49

NOTE. Discharge measurements for 1903 compdete so far as Mexican records exist.

Discharge measurements of Rio San Juan near Santa Rosalia ranch,

Mexico, in 1904. 

[By S. Jaso.]

Tamaulipas,

Date.

March 3............

March 19...........

March 25...........

Aprils.............

April 9.............

April 13............

April 16............

April 24............

April 28............

May 2.. ............

May 18. ............

May 24.... .........

May 28... ..........

June 27. ...........

Area of 

section.

Sq.ft.

270

262 °65

250

235

239

ooq

o<>5

243

318

257

215

193

182

180

186

168

153

391

2,791

308

246

190

605

278

1,576

380

1,615

1,292

243

230

245

2,743

321

265

511

255

192

Gage 

height.

Feet. 

1.0

1.1

1.0

1.0

.9

. .8

.8

.8

.8

1.7

1.0

.6

.5

.4

.3

.2

.2

.1

2.05

18.45

1.4

.8

.4

3.85

1.1

9.4

2.0

9.35

1.8

.9

.8

1.1

13.25

1.6

1.3

2.95

1.0

Discharge.

Sec.-ft. 

49

44

40

41

26

22

oo

24

26

181

45

19

16

aS

07

06

226

6 12, 687

99

23

°0

14

700

3,861

210

4,525

3,192

212

36

Oft

52

9,234

114

64

498

59

Date.

July 4.. .....'.......

July 9..............

July 14....... ......

July 18.. ...........

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

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

September 13......

October 12.........

October 20.........

October 30.........

Area of 

section.

Sq.ft. 

416

271

183

158

146

254

190

154

774

492

211

992

152

130

781

1,157

1,680

2,149

2,537

4,672

2,797

1,401

1,765

1,026

1,248

842

759

695

625

615

620

706

696

754

764

757

713

707

711

669

662

Gage 

height.

Feet. 

2.45

1.30

.5

.3

.2

1.1

.7

4.6

3.0

.9

1.0

.4

.0

4.55

6.65

9.3

11.7

13. 45

24.5

15.05

6.0

9.65

4.95

5.65

3.9

3.1

2.7

2.3

2.3

2.8

2.8

3.15

3.3

3.2

3.0

2.8

2.8

2.5

2.6

Discharge.

Sec.-ft. 

282

39

17

13

12

72

38

14

1,432

545

22

37

14

5

1,302

2,659

5,209

6,523

9,092

37,578

9,954

2,037

4,039

1,482

1,847

629

408

261

187

169

176

328

310

441

446

422

 375

333

309

192

211

a- Approximate, March 7 to 25,1904. 6 Made by floats, April 3,1904
EIO SAN JUAN DRAINAGE BASIN.

Discharge measurements of Rio San Juan near Santa Rosalia ranch, Tamaulipas,

Mexico, in 1907.

[By S. Jaso.]

Date.

March 13. ..........

April 2. ............

April 6.............

April 10............

April 18............

April 23. ...........

April 28. ...........

May 2. .............

May 0. .............

May 9..............

May 11.............

May 20. ............

May 27. ............

June 2.............

July 2.... ..........

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

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

July 6..............

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

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

July 9

Area of 

section.

Sq.ft.

QQ7

862

007

321

318

318

284

977

270

941

236

243

234

210

188

161

144

138

134

3°0

234

247

614

226

1,338

295

280

215

1,160

3,819

1,544

382

330

298

840

1,631

Q^4

3,869

2,169

1,784

1,133

3,653

2,107

Gage 

height.

Feet.

2

QE

2.7

2.6

2

C

2.4

2.3

9 1%

2.1

2.1

2.0

1.95

1 S

1.7

1.8

1.7

1.5

1 45

1.4

1.2

1.0

1.0

.9

.8

2.4

1.7

1.8

4.25

1.6

8.8

2.8

2.3

1.9

7.6

23.6

7.7

1.9

1.5

1.4

4.45

8.2

5.15

1 9

1.5

18.7

10.55

6.5

17.6

10.6

Discharge.

Sec.-ft. 

253

206

172

165

158

157

162

118

118

112

103

55

53

68

43

20

18

17

12

8

7

6<y

183

57

75

782

49

17, 663

3,477

261

8,602

167

88

2,816

17,663

2,993

93

29

26

1,051

3,177

1,201

82

30

16, 080

5,594

4,418

2,389

14, 756 .

5,979 i

Date.

July 10. ............

July 11. ............

July 13. ............

July 15. ............

July 19. ............

July 23. ............

July 26. ............

July 29. ............

August 26..........

August 29..........

Septemberl2......

September 18. .....

September 22. .....

September 23......

September 25......

September 28. .....

October 2..........

October 7 ..........

October 9... '.......

October 12. ........

October 16 .........

October 19.........

October 22.........

October 23.........

October 24.........

October 26.........

October 29.........

November 2. .......

November 12. ......

December 16.......

December 27.......

Area of 

section.

Sq.ft. 

766

580

651

388

225

203

227

196

187

146

137

126

123

214

173

150

118

114

101

304

587

389

227

509

654

265

560

220

374

905

352

211

176

299

455

621

673

433

349

282

401

325

250

270

565

418

360

314

288

282

269

257

Gage 

height.

Feet. 

5.0

3.95

4.35

2.85

1.7

1.5

1.7

1.4

1.2

1.1

1.0

.9

.8

1.5

1.1

.9

.8

.7

.6

2.25

3.95

2.8

1.4

3.4

4.5

1.8

3.85

1.6

2.6

5.75

2.6

1.6

i.3

2.3

3.4

4.35

4.55

3.1

2.65

2.3

3.1

2.6

1.9

2.0

3.9

3.0

2.7

2.3

2.2

2.1

2.0

1.95

Discharge.

Sec.-ft. 

1,534

815

946

280

65

4&

50-

29.

ia

13

12-

4

4

5d

15ia

4

5

0

12&

661

270

36.

465

922

9»

643

63

22d

1,693

239-

52

24 isa

394

718 782-

348

218

135

ssa 2oa

103

137

670

408

287

213

181 iea

141

12d
160 SURFACE WATEK SUPPLY, 1907-8.

Discharge measurements of Rio San Juan near Santa Rosalia ranch, Tamaulipas,

Mexico, in 1908.

[By S. Jaso.]

Date.

March 10.. .........

March 21...........

March 24. ..........

April 12. ...........

April 14............

April 20. ...........

April 22. ...........

April 26............

April 28............

May 4... ...........

May?..............

May 15.............

May 16. ............

May 18.............

May 25...... .......

May 28.............

MavSl.. ...........

June 6. .............

Junel4.. ...........

June23.............

June 25.............

June 27.............

July'2... ...........

July5..............

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

Area of 

section.

Sq.ft. 

242

240

235

225

218

213

291

220

219

211

193

178

172

143

128

126

120

96

95

2,765

459

2,390

1,218

335

289

229

202

507

3,413

1,105

104

130

1,857

395

145

110

90

67

1,008

457 999

939

352

Gage 

height.

Feet. 

1 9

1 9

1.8

1.7

1.65

1.6

2.2

1.7

1.6

1.6

1.4

1.2

1.0

.8

.6

,6

14.05

11.35

3.05

12.3

7.6

1.8

1.3

1.1

3.3

16. 95

7.8

1.2

1.4

9.1

3.15

1.3

1.0

.7

.5

.4

 7.15

3.45

1.8

6.3

2.6

Discharge.

Sec.-ft. 1 13

115

90

87

87

74

173

88

on

77

67

1Q

20

9

10

9

7

3

4

8,086

391

6,856

2,930

167

111

53

28

480

14,164

3,310

530

24

57

5,351

428

46

1Q

2

2

0

3,002

565

109

2,317

276

Date.

July 17... ..........

July 23. ............

July 29.............

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

August 28. .........

Sept ember 23.......

Octobers..........

October6. .........

October 12.........

October 17.........

October 22. ........

October 25. ........

October 28. ........

Area of 

section.

Sq.ft. 

539

198

571

313

180

147

3,193

243

164

153

126

117

631

193

138

111

97

122

146

453

309

491

153

302

183

142

125

169

116

109

474

518

210

141

128

107

3,173

510

277

114

105

280

110

100

98

101

96

Gage 

height.

Feet. 

3.85

1.45

4.05

2.15

1.0

.9

15.85

2.1

1.4

1.2

.9

.8

4.65

1.65

1.1

.8

.6

.9

1.25

3.6

2.65

3.8

1.3

2.65

1.55

1.2

1.0

1.4

.9

.7

3.95

3.9

1.8

1.2

.9

.8

15.85

4.55

2.4

1.4

1.2

2.8

1.3

1.1

1.0

1.0

1.0

Discharge.

Sec.-ft. 

696

54

825

162

7

7

12,932

168

53

43

13

5

1.396

97

20

, 4

4

14

34

485

260

685

51

276

80

32

24

57

22

5

660

634

97

25

12

4

10,280

896

217

45

33

268

43

28

17

23

18
EIO SAN JUAN DRAINAGE BASIN. 161

Daily gage height, in feet, of Rio San Juan near La Quemada, Tamaulipas, Mexico,

for 1900, 1901, and 1902.

Bay.

1900.o 

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

1901.6 

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

Jan.

1.25

1.2

1.15

1.2

1.2

1.2

1.25

1.25

1.3

1.25

1.25

1.3

1.35

1.55

1.3

1.35

1.25

1.15

1.2

1.3

1.25

1.2

1.2

1.25

1.1

1.2

1.2

1.2

1.2

1.3

1.3

Feb.

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.1

1.05

1.2

1.1

1.1

1.1

1.0

1.1

1.0

1.0

1.0

1.0

1.0

1.0

.95

.9

.9

.8

.......

Mar.

0.8

.8

.8

.8

.8

.8

.8

.75

.7

.7

.7

.6

.6

.5

.4

.4

.4

.3

.2

.2

.2

.2

.15

.1

Apr.

4.85

3.1

3.6

.1

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

May.

6l75

6.05

4.5

3.8

2.6

2.2

2.1

2.25

2.2

1 Q

1.85

1.7

1.45

1.4

4.5

14.85

14.8

10.05

6.65

4.5

6.6

14.0

14.8

9

QC

6.50

5.15

4.4

4.0

3.6

3.25

3.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

3.75

2.55

1.7

1 AK.

1.25

1.15

.95

.8

.7

.65

2.6

1.85

1.4

1.3

5.0

2.0

3.15

2.2

1.85

1.65

June.

4.35

11.6

9.25

5.5

6.8

7.75

6.7

4.55

3.6

3.2

3.0

2.9

2.75

2.35

2.25

2.15

2.0

2.8

2.45

1.35

1.1

QC

.85

10.3

9 OK

8.0

1.3

1.35

1.15

QC

7C

.7

.6

.5

.5

.5

.4

.4

.4

.4

*3C

.45

22.0

1Q EC

July.

4.15

3.46

9 Q

2.65

2.45

3.25

2.85

2 A

7.7

10.9

9 65

5.85

4 9

4.0

1.95

1.85

1.7

1.75

5

o<;

6.4

5.85

3.2

3.2

3.05

2.6

1.5

1.5

1.35

1.55

1.1

.7

.5

.35

2.6

2.35

.65

.55

Aug.

7.75

7.65

8.35

6.45

4.6

4.85

5.1

6.1

8.1

9.95

13.05

12.6

11.25

9.2

7.6

5.95

.45

.4

.25

1.25

1.1

1.3

1.6

1.35

1.3

1.3

1.15

1.0

1.0

.8

.7

.7

.7

.65

.6

.4

.4

1.2

1.7

1.15

Sept.

6.95

.85

3.0

2.2

10.45

5.0

2.55

2.45

2.1

1.85

1.6

1.15

.8

.45

.8

.45

.55

.35

.35

.25

.0

.1

.0

.35

.25

.55

.95

.8

12.15

8.6

4.7

3.6

2.35

3.15

3.15

6.05

8.4

5.6

3.65

3.35

2.05

2.75

4.5

5.15

3.4

4.5

3.35

2.55

2.3

2.05

1 QK

16.35

17.1

13.3

8.1

5.8

Oct.

0.75

1.75

2.65

2.05

1.75

1.55

1.45

1.45

1.85

1.65

1.55

1.5

1.0

.9

.75

.75

.75

.85

.9

.9

1.8

1.7

1.75

1.8

1.85

1.75

3.05

1.9

1.55

1.15

11.05

9.55

7.2

5.8

4.9

4.3

3.9

3.65

3.6

3.4

3.25

3.2

12.0

8.75

4.2

3.1

2.85

2.7

2.6

2.5

2.5

7.05

11.4

10.35

9.0

7.0

5.55

5.0

4.55

4.25

4.25

Nov.

0.95

.85

.8

1.05

.8

.8

.8

.75

".8.8

.75

.7

.8

.8

.7

.65

.7

.95

1.05

.95

.85

1.25

1.1

.85

.95

1.05

1.0

1.05

.95

1.1

4.05

3.95

3.8

3.6

3.5

3.35

3.15

2.9

2.8

2.75

3.2

3.05

2.9

2.75

2.55

2.55

2.7

2.55

2.5

2.55

2.7

2.6

2.6

2.6

2.5

2.5

2.45

9.35

11.3

12.1

Dec.

0.9

.95

1.15

1.1

1.1

1.15

1.05

1.05

.95

1.15

1.1

1.15

1.15

1.1

.95

.95

1.1

2.55

2.6

1.8

1.65

1.65

1.45

1.45

1.15

1.1

.85

.75

1.1

1.15

1.2

7.65

3.95

3.75

3.35

3.15

3.00

2.85

9.75

.55

2.15

2.75

2.75

2.7

2.7

2.5

2.5

2.45

2.35

2.3

2.35

2.45

2.5

2.5

2.4

2.4

2.3

2.3

2.4

2.35

2.4

2.4

a Gage heights at this station affected by Rio Grande. 

records exist. 

» No flow April 28-May 9,1901.

24440 IEB 248 10 11

Gage heights for 1900 complete so far as Mexican
.162 SURFACE WATER SUPPLY, 1901-8.

Daily gage height, in feet, of Rio San Juan near La Quemada, Tamaulipas, Mexico, 

for 1900, 1901, and 1 902 Continued.

Day.

1902. 

1............

2............

3............

4............

5............

7.. ..........

8............

9............

10............

11............

12............

13............

14............

15............

Jan.

2.4

2.5

2.75

2.6

2.55

2 55

3.55

2.6

2.55

2.6

2.6

9 n

2.05

2.0

2.0

Feb.

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.65

1.6

1.6

1.7

1.7

1.7

1.7

Mar.

1.3

1.3

1.2

1.15

1.1

1.0

1.0

.9

g

g

.85

.85

.85

.8

Apr.

0.55

.5

.45

.45

.5

.4

.45

.45

.45

.4

.35

.3

1.2

.85

May.

0.9

.85

.8

.75

.85

1.6

8.4

4.55

2.35

1.95

1.65

1.45

1.35

Day.

1902. 

16............

17............

18............

19............

20............

22............

23............

24............

25............

26............

28............

29............

30............

31............

Jan.

2.0

2.1

2.0

1.85

2.2

1 9

1.9

1.85

1.85

1.8

1.75

1.8

1.8

1.8

1.8

1.7

Feb.

1.7

1.7

1.6

1.6

1.55

1 ^

1.5

1.55

1.55

1.5

1.5

1.4

1.3

Mar.

0.8

.8

.8

.75

.7

.7

.65

.65

.6

.6

.55

.55

.55

.5

Apr.

0.85

11.55

8.8

8.25

4.85

3.1

2.15

1.8

1.45

1.35

1.35

1.25

1.2

1.05

.95

May.

NOTE. Gage heights at this station affected by Rio Grande.

Daily gage height, in feet, of Rio San Juan near Santa Rosalia ranch, Tamaulipas, 

Mexico, for 1902 to 1904, 1907, and 1908.

Day.

1902. 

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

1903. 

1............... 

2...............

3...............

4...............

5...............

6................

7...............

8...............

9...............

10...............

Jan.

1 0 

95

9

9

9

9

9

9

9

Feb.

0.7

.7

.7

.6

.6

.6

.55

Mar.

...:...

Apr. May.

1.15

1.0

.95

.9

.8

.8

1.05

1.3

1.1

.95

.8

.75

.7

.6

.55

.5

3.95 

2.6

3.6

2.15

1.65

2.95

4.7

2

7K

2.2

2.0

June.

0.5

.5

.4

.3

.3

.3

.3

.3

.2

.2

2

.1

.1

.1

.1

.0

.0

- .05

- .1

- .1

- .1

 2

 2

- .2

- .3

- .3

- .35

- .4

- .4

.3 

.2

1.55

1.4

2.9

4 95

3 9

2 OK

2.6

My.

-0.45

- .5

- .5

- .55

- .6

 .6

3.75

3.0

2 9

2.9

2.65

2.0

1.85

1.8

1.3

1.3

.8

.5

.4

.3

.15

.05

.0

.0

- .1

- .1

- .2

- .2

-2.65

11.95

4.25

2.5 

1.85

1.55

1.35

2

0

7.0

5.6

*> QK

2.65

2.0

Aug.

2 95

9.1

5.55

3.4

1.8

1.25

.7

.55

.5

.5

.5

.5

.4

.4

.4

.3

.3

.25

.1

.1

.05

.0

.0

.0

.0

- .1

 2

- .2

- .2

- .25

 3

21.5 

14.3

7.25

4.0

3

*>

2.85

2.45

2.25 *> n

1.65

Sept.

-0.3

- .3

- .3

- .3

 .2

1.6

3.8

4.45

7.25

3.55

2.45

2.2

5.65

3.75

3.08

9 7

1.55

1.05

.65

.45

.25

.15

.35

2.6

4.45

5.8

4.0

7.4

8.7

4.55

3.2 

3.3

3.35

4.9

3.85

3.4

3.0

2.85

2.85

2.7

Oct.

14.9

12.35

8.6

6.65

4.4

2.75

3.45

3.25

2.85

2.5

2.05

1.9

1.8

1.5

14.15

13.75

9.05

5.5

4.3

3.8

3.3

3.05

2.75

2.5

2.3

2.15

1.95

1.8

1.7

8.05

4.25

1.75

1.65

1.55

1.45

1 IK

1.25

1.15

1.1

1.05

1.0

Nov.

2.75

2.1

1.9

2.7

2.85

2.2

1.8

1.55

1.45

1.35

1.2

1.1

1.05

1.0

1.0

1.0

1.0

1.0

1.0

.9

.85

.8

.8

1.1

2.1

1.5

1.4

1.4

.95

1.0 

.95

.9

1.05

2.05

1.5

1.15

1.0

.95

Dec.

6.3

7.5

4.6

3.3

2.6

2.15

1.75

4.9

2.3

1.85

1.75

1.45

1.25

1.1

1.3

1.2

1.2

1.2

1.2

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.0

.9 

.9

.9

.9

g

.9

.9

1.0

1.0

1.0
BIO SAN JUAN DRAINAGE BASIN. 163

Daily gage height, in feet, of Rio San Juan near Santa Rosalia ranch, Tamaulipas, 

Mexico, for 1902 to 1904, 1907,.and 1908 Continued.

Day.

1903. 

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25.. ..............

26...............

27...............

28...............

29...............

30...............

31...............

1904. 

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

S9.. .............

30...............

1907. 

1...............

2...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Jan.

0.9

.9

.9 ,

.9

1.0

1.05

1.0

1.1

1.1

1.05

1.0

.95

.9

.9

.9

.9

.9

.8

.8

.8

.8

1.0

1.0

1.0

1.0

1.0

1.1

1.1

1.1

1.1

1.1

1.1

1.05

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.9

.9

.9

.9

.9

.85

.8

.8

.8

.8

.8

2.9

2.9

2.9

2.85

2.8

2.8

2.7

2.7

2.7

2.7

2.7

2.6

2.6

2.6

2.6

Feb.

0.5

.5

.5

.5

.5

.5

.5

.5

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.8

.8

.8

.8

.8

.8

.8

.8

.8

.7

.7

.7

.7

.7

.8

.8

.8

.75

.7

2.0

2.3

1.5

LI

.95

.85

.7

.6

.6

.6

2.3 a35

as

2.3

2.2

2.2

2.15

2.1

2.1 ai

2.1 ai ai

2.0

2.0

Mar.

0.5

.5

.5

.4

.4

.4

.4

.35

.3

.3

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

2.7

1.9

1.3

1.1

1.7

1.7

1.7

1.8

1.75

1 7

1.7

1.7

1.6

1.6

1.6

1.5

1 5

1.5

1.5

Apr.

0 Q5

g

13.76

5. 6

5.15

q QK

1 OR

1.65

1.45

1 OE

1.05

75

.65

.6

.5

.5

.4

.4

.4

.35

2.0

a 75

1.75

i q

1.05

1.05

1.3

1.0

1.0

1.0

1.0

1.0

.9

' .9.9

.8

.8

.8

as

2.2

2.05

May.

3.3

3.45

2.65

2.05

1.85

2.05

1.55

1.35

2.5

O 9K

1.5

1 OK

Q*

oc

7K

.65

.55

45

.35

.3

1.05

ao

4. 1

q -I

4.6

ao

1.55

1.6

8.3

8.0

4 7

ao

7.35

11.25

7.85

a 75

o q

1.65

1.45

1.3

1 T5

.95

9

.9

g

.8

.8

1.15

3.3

a 15

1.85

1.6

1.5

6.1

20.75

8.15

5.0

a 15

a 75

2.55

11.9

5.5

2.95 a7

June.

3.5

2.5

11.75

13 95

6.45

4.6

3

O

3

Q

2.85

2

Q

2.05

1 95

1.85

1.75

1.55

1 45

5.35

5.15

3

ftK

1.65

1 45

1.25

1.05

.85

1 5

U K

12.2

8. °

4.8

2.5

2.1

1 fi£

1.55

1 QH

1.75

1.55

1.35

1.15

2.0

4 1

2.55

3.0

2.05

1.35

95

.85

.75

.65

5.05

6.6

3.6 ao5

2.55

2.2

a 05

1.85

1.75

1.65

1.6

L5

1.5

1.4

1.4

July.

1.6

1.25

1.05

.85

.75

.65

.6

.5

.5

.4

.4

.3

.1

.1

.0

.0

2.2

7.5

.65

KC

4.K.

aos

1.9

3 i

2.2

1.5

1.15

.9

.8

.7

.6

.4

.25

.2

.2

.2

.1

.1

6.8

4.8

3.4

2.55

a 15

1.7

1 95

1.55

1.45

L4

18.2

9.7

9.0

8.0

17.4

9.25

4.8

3.85

3.7

4.2

a45

a 75

Aug.

1 45

o n

2.65

1.95

2.4

12.3

24.3

9.7

9

0

9.1

7.4

6.2

5.35

5.1

4.5

3.8

3.65

3.5

3.4

3.25

1.05

.85

.75

.65

.55

.5

.4

.35

ao

aes

a 55

4.7

K 1

2.35

2.85

aes

as

1.7

1.3

.95

.9

.8

.75

1.15

QK

.65

.55

.45

.4

.35

1.2

1.2

1.2

1.1

1.1

1.05

1.0

1.0

1.0

1.0

.95

.9

.9

.9

.85

Sept.

2

QC

2.25

2.1

2.8

2.85

2

KK

2.65

2.15

O KK

2.2

2.3

2»3

^ Q

^ 4fi

2.6

2.25

2.05

1.85

.25

.05

.0

.0

.0

.0

46

7.6

7.7

8.9

2.75 ia2

15.25

27.0

22.5 las

a 75

ai

16.6

15.6

8.45 a5

ia2

18.45

9.65

8.0

.8

.8

.8

.8

.8

.7.7 '

.7

.65

.6

.6

2.05

as

2.65

2.0

Oct.

1 95

1.45

1.25

1.05

.95

.9

.8

.8

.7

.7

.7

.7

.7

.7

2.7

1.85

1.35

1.2

1.1

1.05

1.2

a95 a4

5.55

5.5

5.15

&7

5.45

47

44

4. 1

a95 a85

Q 7

3.45 a25

3 1

ao

0 Q

2.8 a?

ae

ass a5

2.4

2.35

O OK,

a2

2.2

2.2

2.2

2.2

1.75

1.55

1.4

1.3

1.2

1.1

2.55

ao

aea9

a25 a5

a 15

1.85

1.7

Nov.

0 9

9

9

9

9

.8

.8

.8

.8

9

9

9

.9

.9

.9

9

2.2 a2a25

O Q

a45

O K

a 65

2.8

as

ag

ag

as

as

2.8

as

a?

2.7 "> 55

ai

2.8

2.8

2.7

2.7 a?

2.7

2.7

2.7 a?a7a?

ass

ae

2.4

2.4

ass

2.3

as

2.25

2.2 a2

a2

as

aoai a?

Dec.

1.0

1.0

1.0

1.0 1.1

1.1 1.1 1.1 1.1 1.1

1.1 1.1 1.1 1.1 1.1

1.1 1.1 1.1 1.1

1.0

1.0

as

asa?

ae

as

as

as

% 95

a 15

3.1 ai

3.0

ao

a 95

2.9 2.g

2.85

2.8

2.8

as

as

2.8

2.8

2.8

2.7

ae

as

2.5

ae

2.6

a5a85 a55

ass a2

3.05

ag

as

a 75

2.7

2.6

2.55

2.5

2.4

2.4
164 SURFACE WATER SUPPLY, 1907-8.

Daily gage height, in feet, of Rio San Juan near Santa Rosalia ranch, Tamaulipas, 

Mexico, for 1902 to 1904, 1907, and 1908 Continued.

Day.

1907. 

16...............

17...............

18. ..............

19. ..............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

1908. 

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

Jan.

2.5

2.5

2.5

2.5

2 5

2.4

2 4

2.35

2.3

2.3

2.3

as

2.3 2.3>

2.3

2.3

1.9

1.9

1.9

1.9

1.9

1.9

1.9

1.9

1.85

1.8

1.8

1.8

1.8

1.75

1.7

1.7

1.7

1.7

1.7

1.65

1.6

1.6

1.6

1.6

1.6

1.55

1.5

2.2

a 05

1.9

1.8

Feb.

2.0

2.0

1.95

1.9

1.9

1.9

1.8

1.8

1.8

1.8

1.7

1.7

1.7

1.8

1.7

1.7

1.7

1.7

1.7

1.6

1.6

1.6

1.6

1.6

1.5

1.5

1.5

1.5

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.3

1.3

1.3

1.3

1.3

1.3

1.3

Mar.

1.45

1.4

1.4

1.4

1.35

1.3

1 ^

1.3

1.2

1.2

1.2

1.1

1.0

1.0

1.0

1.2

1.2

1.2

1.1

1.1

1.1

1.0

1.0

1.0

1.0

.9

.9

.85

.8

.8

.8

.8

.8

.8

.7

.8

.8

.8

.8

.8

.8

.8

.8

.7

.7

.6

Apr.

1.9

1.8

1.7

1.7

1.6

1.5

1.7

1.8

1.6

1.5

1.4

3.85

4.15

2.8

2.15

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

6.8

14.05

13.75

11.05

5.6

3.8

3.0

2.4

2.0

11.0

10.05

7.25

3.85

2.7

2.3

2.1

1.8

1.75

1.7

1.55

May.

2 25

2.15

2.05

1.9

6.95

8.25

i 7

2.95

2.5

2.25

2.05

16.6

20.8

ae

5.2

3.9

1.5

i 4<;

1.35

1.3

1.25

1.2

1.1

1.0

1.0

.9

.9

.8

1.3

3.15

17.5

10.3

4.8

3.35

2.65

2.15

1.85

1.65

1.3

1.2

1.35

1.8

1.6

1.35

1.25

1.15

8.35

June.

1.4

1.4

5.65

7.4

4.8

3.95

3.15

2.75

a 55

2.3

2.05

1.9

1.85

1.75

1.65

4.1

2.9

2.15

1.75

1.4

1.3

1.2

1.1

1.0

.9

.8

.8

.75

.7

.7

.65

.6

.6

.5

.5

.5

.5

.4

1.75

10.45

6.6

3.35

5.4

3.75

2.7

July.

2.35

2.1

1.95

1.75

1.7

1.6

1 H><

1.5

1.4

1.7

1.65

1.55

1.45

1.4

1.3

1.3

2 0

1.9

1.9

2.15

4.85

3.9

a 45

1.95

2.7

2.95

1.95

1.65

1.45 a?

3.75

a 55 ai

1.8

1.65

1.5

1.35

1.15

.9

1.45

1.3

1.15

1.0

.95

.9

.9

13.1

Aug.

0.8

.8

.8

.9

1.0

.9

1.5

1.35

1.2

1.15

1.1

1.0

9.5

.9

.9

.85

6.25

4.9

3.15

2.4

2.0

1.75

1.5

1.35

1.35

1.55

1.4

1.15

1.0

.95

.9

.85

.8

.8

.7

.7

4.2

1.8

1.35

1.7

1.7

1.45

1.25

1.05

1.0

.9

.85

Sept.

1.6

1.5

1.45

1.45

1.4

1.35

3.15

4.0

2.4

1.7

1.55

2.2

3.6

2.6

2.0

.8

.8

.7

.7

.7

.6

.6

.6

.65

1.0

.9

.8

.7

.7

1.15

.9

2.3

3.4

3.05

2.25

2.35

2.85

3.7

2.5

1.9

1.6

1.45

1.3

1.15

1.15

Oct.

1.6

1.5

1.4

1.3

1.3

1.6

1.95

3.2

4.1

3.55

4.45

3.85

3.4

3.1

2.85

a 65

2.5

as

1.6

1.4

1.25

1.15

1.0

1.0

.95

.9

.9

1.35

1.25

1.0

1.0

.95

.9

.9

.9

.8

.7

.7

4.05

5.0

3.9

a9

2.2

1.75

1.6

1.5

1.3

Nov.

2.6

2.55

2.5

as

2.4

2.3 a2

2.1

2.0

2.0

1.9

1.95

2.0

2.1

as

1.3

1.3

1.15

1.0

1.0

95

9

9

8

8

.8

15.95

5.85

4.4

3.5

3.0

a45

2.15

1.75

1.55

1.45

1.3

1.2

1.2

1.2

1.2

1.1

1.0

1.0

1.0

Dec.

2.3

as

2 3

2.25

2.2

2.2

2 2

ai

2.1

2.1

2.0

2.0

2.0

1.95

1.9

1.9

1.0

1.0

a 55

a 25

1.85

1.55

1.4

1.3

1.2

1.2

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0
STJBFACE WATER SUPPLY, 1907-8. 165 

MISCELLANEOUS MEASUREMENTS IN RIO GRANDE DRAINAGE BASIN.

The following miscellaneous discharge measurements were made in 

the Rio Grande drainage basin in 1907 and 1908:

Miscellaneous discharge measurements in Rio Grande basin in 1907 and 1908.

Date.

Nov. 10,1907

Mar. 17,1908

June 11,1907

June 27,1907

July 30,1907

Nov. 8,1907

May 18,1908

June 9, 1908

July 31,1907

May 18,1908

June 9, 1908

May 5, 1908

Do.......

Do.......

Nov. 13,1907

May 17,1907

May 18,1907

Do.......

Do.......

Oct. 25,1907

Oct. 24,1907

Feb. 1,1907

Sept 22,1907

Do.......

Mar. 26,1907

Do.......

Do.......

Do.......

Do.......

Feb. 1, 1907

Sept. 22, 1907

Do.......

Feb. 1, 1907

Do.......

Stream.

.....do.............

.....do.............

.....do.............

.....do............

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

Fork.

South Fork.

.....do.............

.....do.............

.....do.............

.....do.............

'.....do.............

.....do.............

.....do.............

.....do.............

North Branch.

South Branch.

Tributary to 

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

Rio Taos.... .......

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

Black River. .......

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

.....do.............

Locality.

.....do....................

.....do....................

.....do....................

.....do....................

.....do....................

.....do....................

.....do....................

Taos, N. Mex.

N. Mex.

near Taos.

wood Hot Springs, N. 

Mex.

ter's farm, above Fort 

Stanton, N. Mex.

Parsons, N. Mex.

Parsons, N. Mex. 

High Rolls, N. Mex.......

southeast of Alamo 

Gordo, N. Mex.

T. 27 N., R. 26 E, New 

Mexico.

sec. 3, T. 27 N., R. 26 E'.

sec. 24, T. 28 N., R. 26 E. 

U. S. R. S. canal at spilland R. 28 E, New Mexico.

T. 28 N., R.26E.

28, T.28N., R.26E.

27, T. 28 N., R. 26 E. 

.....do....................

.....do....................

Gage 

height.

Feet.

&ii.37 6ias5

\ .34

.41

\ 1.02

.84

J .58

Discharge.

Sec.-ft. 

«20

o2

o30

o2

0

0

o2

0

050

723

282

43.7

33.2

7.1

19.4

10.6

8.2

4.5

8.0

10.3

3

0.25

1.1

9.6

2.1

2.4

11.1

7.8

4.2

15

15.2

0.25

0.9

1.8

a Estimated.

. *> Water surface measured down from cross painted at foot of truss post, downstream side of bridge, 33 

feet from right abutment of bridge. Highway bridge 1 mile south of Antonito.
INDEX.

A.

Accuracy, degree of.......................... 24-25

Acknowledgments to those aiding........... 26

Acre-foot, definition of....................... 11

Alamo Gordo, N. Mex., 

Alamo River near:

discharge............................ 165

Alamo River near 

Alamo Gordo, N. Mex.:

discharge............................ 165

Albuquerque district, irrigation in........... 30

Antonito, Colo.,

San Antonio Creek at:

discharge............................ 165

Appropriations, amount of.................. 5

Authority for investigations, recital of....... 5

Avalon, N. Mex., 

Pecos River at:

description.......................... 124

discharge............................ 124

discharge, monthly.................. 125

gage heights......................... 125

rating table.......................... 125

Avalon canal, view of....................... 116

B. 

Black River at 

Judkins's ranch, New Mexico:

discharge............................ 165

Kennon's ranch, New Mexico:

discharge............................ 165

Black River canal at 

spillway:

discharge............................ 165

Blue Spring canal at 

Judkins's ranch, New Mexico:

discharge............................ 165

Blue Spring Creek at >

Judkins's ranch, New Mexico:

discharge............................ 165

Bolster, R. H., work of...................... 27

Bonita Creek at or near 

Fort Stanton, N. Mex.:

discharge............................ 165

Bonita Creek (South Fork) nearParsons, N. Mex.:

discharge ........................... 165

Bonita Creek (West Fork) nearParsons, N. Mex.:

discharge............................ 165

Brownsville, Tex., 

Rio Grande near:

description.......................... 93

discharge............................ 93-99

gage heights........................ 99-102

C.

Page. 

Cameron Creek at 

Fort Bayard, N. Mex.:

description........................ 110-111

discharge........\................... Ill

discharge, monthly.................. Ill

gage heights......................... Ill

Carlsbad, N. Mex., 

Pecos River at:

description........................ 125-126

discharge............................ 126

gage heights......................... 126

Carlsbad projects, views on.................. 116

Chatfleld, C. L., work of..................... 27

Colorado, cooperation of..................... 26

Conejos River near 

Mogote, Colo.:

description.......................... 103

discharge............................ 103

discharge, monthly.................. 106

gage heights....................... 104-105

rating table.......................... 106

Cooper, R. L., work of....................... 27

Cooperation, credit for.................... 26,30-31

Creede, Colo.,

Rio Grande near:

curves, figure showing .............. 21

description.......................... 32

discharge............................ 32

discharge, monthly.................. 34

gage heights......................... 33

rating table.......................... 34

Willow Creek at:

discharge............................ 165

Current meter, description of................ 17-18

plate showing........ .................. 18

use of................................ 16,18-19

Curves, discharge, chart showing............ 21

D.

Dayton, N. Mex., 

Pecos River near:

description.......................... 119

discharge............................ 119

discharge, daily..................... 121

discharge, monthly.................. 122

gage heights......................... 120

rating table.......................... 121

Penasco River near:

description........................... 139

...................... 140

...................... 140

Definitions of terms used.................... 11

167
168 INDEX.

Del Norte, Colo.,

Rio Grande near: Page, 

description.......................... 34-35

discharge............................ 35

discharge, monthly..............'.... 37

gage heights......................... 36

rating tables......................... 36

Devils River (mouth of), Tex., 

Rio Grande near:

description.......................... 65

discharge............................ 65-67

discharge, daily...................... 69

discharge, monthly.................. 70

gage heights......................... 68

Devils River at 

Devils River, Tex.:

description.......................... 141

discharge............................ 142

discharge, daily..................... 144

discharge, monthly.................. 145

gage heights......................... 143

Definitions, statements of............."...... 11

Discharge, computation of................... 19-24

curves for............................... 19-20

figure showing...................... 21

Discharge measurements, nature of.......... 13,14

Drainage, stream flow and......... ........ 7-8

Drainage basins, list of...................... 8

Dry Gulch at 

Wason, Colo.:

discharge............................ 165

E.

Eagle Pass, Tex., 

Rio Grande at:

description.......................... 70

discharge............................ 71-72

discharge, daily..................... 74

discharge, monthly.................. 75

. gage heights......................... 73

El Paso, Tex.,

Rio Grande near:

description.......................... 45

discharge............................ 46-47

discharge, daily..................... 49

discharge, monthly.................. 50

gage heights......................... 48

Equivalents, list of.......................... 12-13

Espanola Valley, irrigation in............... 30

F.

Fay wood, N. Mex., 

Mimbres River near:

description.......................... 109

discharge.......................... 109,165

gage heights......................... 110

Float method, description of................ 17

Flood prevention, stream flow and.......... 8

Follett, W. W., work in charge of........... 27

Fort Bayard, N. Mex., 

Caineron Creek at:

description........................ 110-111

discharge............................ Ill

discharge, monthly.................. Ill

gage heights......................... Ill

Stephens Creek near:

description.......................... 112

discharge............................ 112

...................... 113

Fort Stanton, N. Mex., 

Bonita Creek at or near:

discharge............................ 165

Fort Sumner, N. Mex., 

Pecos River near:

description........................ 116-117

discharge............................ 117

discharge, daily..................... 118

discharge, monthly.................. 119

gage heights....................... 117-118

Fox Creek at 

Mogote, Colo.:

discharge............................ 165

Freeman, W. B., work in charge of.......... 26-27

Fresnal River at 

High Rolls, N. Mex.:

discharge............................ 165

G.

Gage heights, nature of...................... 13

Gaging station, description of................ 16

classification of.......................... 20-24

Gallinas River near 

Las Vegas, N. Mex.:

description.......................... 134

discharge............................. 135

discharge, monthly.................. 137

gage heights....................... 135-136

rating tables......................... 136

Guerrero, Mexico, 

Rio Salado near:

description.......................... 145

discharge.......................... 146-151

gage heights....................... 152-155

H.

High Rolls, N. Mex., 

Fresnal River at:

discharge............................ 165

Hondo Reservoir inlet, works in, view of...... 30

Hondo Reservoir inlet near 

Roswell, N. Mex.:

description.......................... 137

discharge............................ 138

gage heights......................... 138

Hondo River (below outlet canal) near 

Roswell, N. Mex.:

description.......................... 139

gage height......................... 139

I.

Ice, measurements under.................... 19,24

Investigations, authority for................. 5

purposes of.............................. 7-8

scope of................................. 6-7

Irrigation, stream flow and.................. 7

J.

Judkins's ranch, New Mexico, 

Black River near:

discharge............................ 166

Blue Spring Canal at:

discharge............................ 165

Blue Spring Creek at:

discharge............................ 165
INDEX. 169

Page.

K.

Kennon's ranch, New Mexico, 

Black River at:

discharge..............

L.

Lake McMillan at 

Lakewood, N. Mex.:

165

...................... 141

Lake McMillan reservoir, view of............ 116

Lakewood, N. Mex., 

Lake MeMillan at:

gage heights......................... 141

Pecos River near:

description.......................... 122

discharge............................ 122

discharge, monthly.................. 124

gage heights......................... 123

rating table......................... 123

Lamb, W. A., work of...................... 27

Langtry, Tex.,

Rio Grande near:

description.......................... 60

discharge............................ 61-62

discharge, daily..................... 64

discharge, monthly.................. 65

gage heights......................... 63

La Quemada, Mexico, 

Rio San Juan near:

description.......................... 155

discharge.......................... 156-157

gage heights....................... 161-162

Laredo, Tex.,

Rio Grande near:

description.......................... 75

discharge............................ 76-79

gage heights......................... 81-82

Las Vegas, N. Mex., 

Gallinas River near:

description.......................... 134

discharge............................ 135

discharge, monthly.................. 137

gage heights....................... 135-136

rating tables......................... 136

Leasburg dam, etc., view of................. 30

Lobatos, Colo.,

Rio Grande near:

description.......................... 37

discharge............................ 38

discharge, monthly.................. 40

gage heights......................... 38-39

rating tables......................... 39

Los Angeles, current-meter rating station at,

view of.......................... 16

Lucero Creek near 

Taos, N. Mex.:

discharge............................ 165

M.

Margueretta Flume near 

 Pecos, Tex.:

description.......................... 127

discharge............................ 128

discharge, daily..................... 129

discharge, monthly.................. 129

gage heights......................... 128

rating tables........................ 129

Page. 

Mathers, J. G., work of.................... . 27

Meeker, R. L, work of....................... 27

Mesilla Valley, irrigation in.................. 30

Miller, C. D., work of........................ 27

Mimbres River near 

Faywood, N. Mex.:

description.......................... 109

discharge.......................... 109,165

gage heights......................... 110

Miscellaneous measurements in Rio Grande

basin............................ 165

Mogote, Colo.,

Conejos River near:

description.......................... 103

discharge............................ 103

discharge, monthly.................. 106

gage heights....................... 104-105

rating table..... .T. .................. 106

Fox Creek at:

discharge............................ 165

Moorhead, Tex.,

Pecos River near:

description.......................... 130

discharge.......................... 130-131

discharge, daily..................... 133

discharge, monthly.................. 134

gage heights......................... 132

N.

Navigation, stream flow and................ 7

New Mexico, cooperation of................. 26

Nuevo Lafedo, Mexico, 

Rio Grande, near:

description.......................... 75

discharge............................ 76

gage heights......................... 79-80

P.

Padgett, H. D., work of.,.................. 27

Parsons, N. Mex.,

Bonita Creek (South Fork) near:

discharge ........................... 165

Bonita Creek (West Fork) near:

discharge............................ 165

Pecos, Tex.,

Margueretta Flume, near:

description.......................... 127

discharge............................ 128

discharge, daily...................... 129

discharge, monthly.................. 129

gage heights......................... 128

rating tables........................ 129

Pecos River at or near 

Avalon, N. Mex.:

description.......................... 124

discharge............................ 124

discharge, monthly.................. 125

gage heights......................... 125

rating table.......................... 125

Carlsbad, N. Mex.:

description........................ 125-126

discharge............................ 126

...................... 126

Dayton, N. Mex.:

description.......................... 119

discharge............................ 119

discharge, daily.,.................... 121
170 INDEX.

Pecos River at or near Continued.

Dayton, N. Mex. Continued.

discharge, monthly.................. 122

gage heights......................... 120

rating tables......................... 121

Fort Sumner, N. Mex.:

description........................ 116-117

discharge............................ 117

discharge, daily...................... 118

discharge, monthly.-................. 119

gage heights....................... 117-118

Lakewood, N. Mex.:

description.......................... 122

discharge............................ 122

discharge, monthly.................. 124

gage heights......................... 123

rating table.......................... 123

Moorhead, Tex.:

description.......................... 130

discharge.......................... 130-131

discharge, daily...................... 133

discharge, monthly.................. 134

gage heights......................... 132

Pecos, Tex.:

description.......................... 127

discharge............................ 127

discharge, monthly.................. 128

gage heights......................... 127

rating table......................... 128

Pecos River basin:

description........................ 114-116

gaging stations...................... 116

irrigation............................ 115

miscellaneous measurements........ 165

stream flow....................... 116-141

Penasco River nearDayton, N. Mex.:

description........................ 139-140

...................... 140

...................... 140

Presidio, Tex.,

Rio Grande above:

description.......................... 50-51

discharge............................ 51-52

discharge, daily..................... 54

discharge, monthly.................. 55

gage heights......................... 53

Eio Grande below:

description.......................... 55-56

discharge............................ 56-57

discharge, daily..................... 59

discharge, monthly.................. 60

gage heights......................... 58

Publications, lists of......................... 8-11

R.

Rating curves, construction and use of....... 20

Rating station, view of...................... 16

Rating tables, construction of............... 20

nature of................................ 14

Revision, need for........................... 25-26

Rice, R. C., work of......................... 27

Rio Grande at or near 

Brownsville, Tex.:

description.......................... 93

discharge............................ 93-99

gage heights........................ 99-102

Rio Grande at or near Continued.

Creede, Colo.: Page. 

curves, figure showing .............. 21

description.......................... 32

discharge............................ 32

discharge, monthly.................. 34

gage heights......................... 33

rating table......................... 34

Del Norte, Colo.:

description.......................... 34-35

discharge............................ 35

discharge, monthly.................. 37

gage heights......................... 36

rating tables......................... 36

Devils River (mouth), Texas:

description.......................... 65

discharge............................ 66-67

discharge, daily...................... 69

discharge, monthly.................. 70

gage heights......................... 68

Eagle Pass, Tex.:

description.......................... 70

discharge............................ 71-72

discharge, daily...................... 74

discharge, monthly.................. 75

gage heights......................... 73

El Paso, Tex.:

description.......................... 45

discharge............................ 46-47

discharge, daily...................... 49

discharge, monthly.................. 50

gage heights......................... 48

Langtry, Tex.:

description.......................... 60

discharge............................ 61-62

discharge, daily...................... 64

discharge, monthly.................. 65

gage heights......................... 63

Laredo, Tex.:

description.......................... 75

discharge............................ 76-79

gage heights......................... 81-82

Lobatos, Colo.:

description.......................... 37

discharge............................ 38

discharge, monthly.................. 40

gage heights......................... 38-39

rating tables......................... 39

Nuevo Laredo, Mexico:

description.......................... 75

discharge............................ 76

gage heights......................... 79-80

(above) Presidio, Tex.:

description.......................... 50-51

discharge............................ 51-52

discharge, daily...................... 54

discharge, monthly.................. 55

gage heights......................... 53

(below) Presidio, Tex.:

description.......................... 55-56

discharge............................ 56-57

discharge, daily...................... 59

discharge, monthly.................. 60

gage heights.............:........... 58

Roma, Tex.:

description.......................... 83

discharge............................ 83-89

...................... 89-92
INDEX. 171

Rio Grande at or near Continued. 

San Marcial, N. Mex.:

description.......................... 40-41

discharge............................ 41-42

discharge, daily..................... 44

discharge, monthly.................. 45

gage heights......................... 43

Rio Grande basin:

description.......................... 27-31

gaging stations...................... 31

irrigation............................ 29-30

miscellaneous measurements........ 165

power............................... 30

stream flow........................ 32-164

Rio Grande canal, view on................... 30

Rio Salado near 

Guerrero, Mexico:

description.......................... 145

discharge.......................... 146-151

gage heights....................... 152-155

Rio San Juan near 

La Quemada, Mexico:

description.......................... 155

discharge.......................... 156-157

gage heights....................... 161-162

Santa Rosalia ranch, Mexico:

description.......................... 155

discharge.......................... 157-160

gage heights....................... 162-164

Roma, Tex.,

Rio Grande near:

description.......................... 83

discharge............................ 83-89

gage heights......................... 89-92

Roswell, N. Mex.,

Hondo Reservoir inlet near:

description.......................... 137

discharge............................ 138

gage he ights......................... 138

Hondo River (below outlet canal) near:

description.......................... 139

gage heights......................... 139

Run-off,computation of..................... 19-24

definition of............................. 11

S.

San Antonio Creek at 

Antonito, Colo.:

discharge............................ 165

San Luis Valley, irrigation in................ 29

San Marcial, N. Mex., 

Rio Grande near:

description.......................... 40-41

discharge............................ 41-42

San Marcial, N. Mex. Continued. 

Rio Grande near Continued.

discharge, daily...................... 44

discharge, monthly.................. 45

gage heights......................... 43

Santa Fe Creek at 

Santa Fe, N. Mex.:

description.......................... 107

discharge............................ 107

gage heights......................... 108

Santa Rosalia ranch, Mexico, 

Rio San Juan near:

description.......................... 155

discharge.......................... 157-160

gage heights....................... 162-164

Second-foot, definition of.................... 11

Section, changes in, estimation for........... 22-23

Slope method, description of................. 14

Stephens Creek near 

Fort Bayard, N. Mex.:

description.......................... 112

discharge............................ 112

gage heights......................... 113

Stewart, J. B., work of...................... 27

Stream measurements, accuracy of........... 24-25

data of, use of........................... 25-26

methods of.............................. 14-19

Sullivan, V. L., work of..................... 27

Swamps, drainage of, stream flow and....... 7-8

T. 

Tables, explanation of....................... 13-14

Taos, N. Mex.,

Lucero Creek near:

discharge............................ 165

Taos district, irrigation in................... 29-30

V. 

Velocity method, description of.............. 15-19

W.

Walters, M. I., work of...................... 27

Wason, Colo.,

Dry Gulch at:

discharge............................ 165

Water power, stream flow and............... 7

Water supply, stream flow and.............. 7

Weir method, description of................. 14-15

Willow Creek at 

Creede, Colo.:

discharge............................ 165

Wood, Mrs. B. D., work of.................. 27

Work, divisioncf............................ 26-27

o