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<br />RIO GRANDE COMPACT COMMISSION REPORT
<br />
<br />Reservoirs'in Rio Grande Basin in New Mexico
<br />
<br />Elephant Butte Reservoir.--Water-stage recorder in NW~ sec. 30, T. 13 S.. R. 3 W., at dam
<br />on R~o Grande. Storage began Jan. 6, 1915; capacity. 2,137.200 acre-feet at gage height
<br />4.407.0 ft (crest of spillway), by survey of 1969. Datum of gage is 43.3 ft above mean
<br />sea level, datum of 1929. Water is used for power development and irrigation in New
<br />Mexico and Texas. Records furnished by Bureau of Reclamation.
<br />
<br /> Month-end gaDe heiDht in feet and contents, in acre~feet
<br /> Date Gage height Contents Change in Contents
<br />December 31, 1972 4,319.02 301.600 -
<br />January 31, 1973 4,323.10 343,400 +41,800
<br />February 28 4,326.80 384,400 +41,000
<br />March 31 4,325.i8 366,100 -18,300
<br />April 30 4,327.00 386,700 +20,600
<br />May 3i 4,339.99 551,900 +165, ZOO
<br />June 30 4,348.38 675.900 +124,000
<br />July 31 4,349.84 699,100 +23,200
<br />August 31 4,350.22 705.300 +6,200
<br />September 30 4,347.61 663,800 -41,500
<br />October 31 4,348.12 671,8-00 +8,000
<br />November 30 4,350.30 706,6{)0 +34,800
<br />December 31 4,355.52 794,200 +87 ;600
<br />Calendar year 1973 - - +492,600
<br />
<br />Caba1lo Reservoir.-.Water-stage recorder in SE~SW~ sec. 19, T. 16 S., R. 4 W., at dam on
<br />R~o Grande. Storage began Feb. 8, 1938; capacity, 344,000 acre-ft (by 1958 survey),
<br />at gage height 4,182.0 ft (above which spillway gates open automatically). Datum of
<br />gage is 43.3 ft above mean sea level, datum of 1929. 100,000 acre-ft of storage
<br />reserved for flood control. Records furnished by Bureau of Reclamation.
<br />
<br /> Month.end l7aue heil1ht in feet and contents in acre-feet
<br /> Date Gage height Contents Change in Contents
<br />December 31, 1972 4,147.28 68,070 -
<br />January 31, 1973 4,147.59 69,450 +1,380
<br />Feb.ruary 28 4,148.49 73,560 +4,110
<br />March 31 4,150.45 83,020 +9,460
<br />April 30 4,148.64 74,260 -8,760
<br />May 31 4,156.72 119,200 +44,940
<br />June 30 4,156.80 119,700 +500
<br />July 31 4,158.14 128,700 +9,000
<br />August 31 4,140.76 42,800 -85,900
<br />September 30 4,137.18 31,850 -10,950
<br />October 31 4,138.45 35,540 +3,690
<br />November ;0 4,139.20 37,810 +2,270
<br />December 31 4,139.89 39,970 +2,160
<br />Calendar year 1973 - - -28,100
<br />
<br />Project Storage.--This is the combined storage in Elephant Butte and Cabal10 Reservoirs.
<br />Total Project Storage capacity is 2,381,200 acre.feet which excludes the 100,000 acre-
<br />ft reserved for flood control in Caba110 Reservoir.
<br />
<br /> Month.end lTalTe heis/:ht in feet and contents in acre-feet
<br /> Date Gage height Contents Change in Contents
<br />December 31, 1972 - 369,700 -
<br />January 31, 1973 - 412,800 +43,100
<br />February 28 - 458,000 +45,200
<br />March 31 - 449,100 -8,900
<br />April ;0 - 461,000 +11,900
<br />May 31 - 671,100 +210,100
<br />June 30 - 795,600 +124,500
<br />July 31 - 827,800 +32,200
<br />August 31 - 748,100 -79,700
<br />September ;0 - 695,600 .52,500
<br />October 31 . 707.300 +11,700
<br />November 30 - 744,400 +37,100
<br />December 31 - 834,200 +89,800
<br />Calendar year 1973 - - +464,500
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