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<br />Rio Grande below Elephant Butte Dam, N. Mex
<br />
<br />Location.--Water_s!age recorder, !at 33008'45", long 107012'20", in swi sec.25, T.13 S., R4 W., (projected),
<br />in Pedro Armendariz Grant, on left bank 1.0 mile downstream from dam and Ii miles upstream from Cuchillo
<br />Negro River. Datum of gage is 4,242,09 ft above mean sea level, dljtum of 1929. Prior to Apr. 23, 1942, at
<br />several different sites and datums.
<br />
<br />D.ainage area.--28,900 sq ml, approximately (indludes 2,940 sq mi in closed basin in San Luis Valley, Colo.).
<br />
<br />Average discharge.--50 years (1915-64), 1,038 cis (751,500 acre-feet per year),
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<br />Extremes.--1915_84: Maximum daily discharge, 8,200 cfs May 22, 1942; no flow at times prior to 1929.
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<br />Remarks. --Records good. Flow regulated by Elephant Butte Reservoir. Diversions for irrigation of about 800,000
<br />acres above station.
<br />
<br /> .Monthlv and yearly discharj!€ in cubic feet per second
<br />Month Second- Maximum Minimum Mean Runoff in
<br /> foot-days dailv dailv Acre-feet
<br />January . 154.0 7.8 3.5 4.97 305
<br />February 162.1 8.4 4.4 5.59 322
<br />March 11,108.3 728 5.4 358 22,030
<br />April 20,337 740 390 678 40,340
<br />May. 412 18 12 13.3 817
<br />June 8,527 793 13 284 16,910
<br />Juiy. 20,848 758 383 673 41,350
<br />August. 21,132 1,090 278 682 41,910
<br />September. 9,494.2 1,380 4.1 316 18,830
<br />October . 127.6 5.0 2.8 4.12 253
<br />November . 77.6 3.2 1.6 2.59 154
<br />December . 91.1 4.6 2.6 2.94 181
<br />Calendar year 1964 . 92,470.9 1,380 1.6 253 183,400
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<br />Rio Grande below Caballa Dam, N. Mex.
<br />
<br />Location.--Water_Slage recorder, lat 32053'05", long 107017'30", in NEtSWt sec.30, T.16 s., R4 W., 600 ft up-
<br />stream from BOjarquez Bridge, 4,200 ft downstream from Caballo Dam, I 1/3 miles upstream from Percha
<br />diversion dam, and 3 miles northeast of Arrey. Datum of gage is 4,140.9 ft above mean sea level, datum of
<br />1929. Oct. 13, 1938, to Dec. 31, 1945 at datum 5.0 ft higher.
<br />
<br />Drainage are'.--30,200 sq mi, approximately (includes 2,940 sq mi in closed baSin in San Luis Valley, Colo.).
<br />
<br />Average discharge.-_27 year (1938-64), 912 cIs (660,300 acre-ft per year).
<br />
<br />Extremes.--1938_64: Maximum dally diSCharge, 7,650 cfs May 20, 1942; minimum dally, 0.1 cfs Oct. 31 to Nov. 14,
<br />1954, Nov. 7 to Dec. 31, 1955.
<br />
<br />Remarks.--Records good. Considerable diversion above station for irrigation.
<br />Elephant Butte Reservoirs.
<br />
<br />Flow regulated by Caballa and
<br />
<br /> Monthlv and yearly di.scharlre in cubic feet per second
<br />Month Second_ Maximum Minimum Mean Runoff in
<br /> foot-davs dailv dailv Acre-feet
<br />January . 44.7 1.5 1.4 1.4 89
<br />February 41.4 1.5 1.4 1.4 82
<br />March 17,655.6 1,270 1.4 570 35,020
<br />April 12,841 1,020 2 428 25,470
<br />May. 62 2 2 2.0 123
<br />June 18,285 1,010 2 610 36,270
<br />July. 20,813 881 529 671 41,280
<br />August. 23,543 1,060 286 759 46,700
<br />Septemb er . 10,517.2 1,350 1.6 351 20,860
<br />October . 35.0 1.6 1.0 1.1 69
<br />November . 29.0 1.0 .9 1.0 58
<br />December . 32.2 U 1.0 1.0 84
<br />Calendar year 1964. 103,899.1 1,350 .9 284 206,100
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