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<br />42
<br />
<br />RIO GRANDE COMPACT COMMISSION REPORT
<br />
<br />Rio Grande below Caballo Darn, N. Mex.
<br />
<br />Location.--Water-stage recorder, lat 32053'05", long 107017'31", in NE\SW\ sec. 30, T. 16 s.,
<br />R. 4 W., 2,000 ft upstream from Interstate Highway 25, 4,200 ft downstream from Cabal10
<br />Dam, 1.3 miles upstream from Percha diversion darn, and 3 miles northeast of Arrey. Datum
<br />of gage is 4,140.9 ft above mean sea level, datum of 1929. October 13, 1938 to December 31,
<br />1945 at datum 5.0 ft higher.
<br />
<br />Drainage area.--30,700 sq m!, approximately (includes 2,940 sq roi in closed basin in San Luis
<br />Valley, Colo.).
<br />Average discharge.--35 years (1938-72) 868 cfs (628.900 acre-ft per year).
<br />Extremes.--1938-71: Maximum daily discharge, 7,650 cfs May 20, 19#2; minimum daily, 0.1 crs
<br />Oct. 31 to Nov. 1#, 1954, Nov. 7 to Dec. 31) 1955.
<br />
<br />Remarks.--Records good. Considerable diversion above station for irrigation. Flow regulated
<br />by Caba110 and Elephant Butte Reservoir.
<br />
<br /> Monthlv and vearl discharQ'e in cubic feet ner second
<br /> Second- Haximum !v:inimum Runoff in
<br />Month foot-davs dail y dail y Mean Acre-feet
<br />January 27 .8 1.0 0.5 0,90 55
<br />February 5.9 .5 .1 ,20 12
<br />Narch 43,386 2,070 285 1,400 86,060
<br />April 14,08" 700 288 469 27,940
<br />t-1ay 6,542.2 542 4.4 211 12,980
<br />June 12,749,8 1)410 4.4 425 25,290
<br />July 30,031 1,850 373 969 59,570
<br />August 21,100 2,110 25 681 41,850
<br />September 3,406.7 960 1.6 114 6,760
<br />October 75.9 2.9 1.7 2.45 151
<br />November 66.2 2.3 2.1 2.21 131
<br />December 66.4 2.3 2.1 2,14 132
<br />Calendar year 1972 131,5"1. 9 2,110 .1 359 260,900
<br />
<br />Bonito ditch below Caballo Dam, N. Mex.
<br />
<br />Records available.--January 1938 to December 1972. Published as supplementary data with Rio
<br />Grande below caballo Dam in U.S.O.S. Water-Supply Papers beginning with October 19~7.
<br />
<br />Pemarks.--Ditch diverts directly from Caballo Reservoir for irrigation of lands on right bank
<br />of river. The total release ,from Project Storage, as used in computations of Compact
<br />Commission, is the combined flow of this ditch and Rio Grande below Caballo Dam.
<br />
<br /> Monthlv and vearl d1scharp:e in cubic feet "er second
<br /> Second- Uaximum Minimum Runoff in
<br />!>lonth foot-davs dailY dailv Mean Acre-feet
<br />January 0 0 0 0 0
<br />February 0 0 0 0 0
<br />March 65 10 0 2.10 129
<br />April 29.3 18 0 .98 58
<br />r4ay 38.9 16 0 1. 26 77
<br />June 74.6 10 0 2.49 148
<br />July 51. 0 31 0 1. 65 101
<br />August 34.1 7.5 0 1.10 68
<br />September 51.2 10 0 1. 71 102
<br />October 0 0 0 0 0
<br />r~cvember 0 0 0 0 0
<br />December 0 0 0 0 0
<br />Calendar year 1972 3"4.1 31 0 .94 683
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