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<br />STORAGE IN RESERVOIRS
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<br />Reservoirs in Rio Grande Basin in New Mexico
<br />(Constructed or enlarged since 1929)
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<br />Heron Reservoir.-Water_stage recorder, !at 36039'56", long 106042'13", on Willow Creek. Storage began in October 1970. Capadty,
<br />401,300 acre-ft atelevaUon 7 J86.1 ft (low point on crest of Spillway); dead storage, 1,340 acre-ftatelevation 7,003.0 ft. Used for storage
<br />of transmountain water.
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<br />Month-end elevation, in feet, and contents, in acre-feet
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<br />Date Elevation Contents Change in Contents
<br />DEcember 31, 1990 7,18250 380,390
<br />January 31,1991 7,181.74 376,06(1 -4,330
<br />February 28 7,18028 367,800 -8.260
<br />March 31 7,17621 345,350 -22,450
<br />April30 7,17155 320,650 -24,700
<br />May31 7,179.33 362,490 +41,84(1
<br />June 30 7,185.46 397,560 +35,070
<br />July31 7,186.05 401,040 +3,480
<br />August 31 7,185.84 399,800 -1.240
<br />September 30 7,185.87 399,980 +180
<br />October 31 7,18559 398,330 -1,650
<br />November 30 7,185.38 397,100 -1,230
<br />December 31 7,184.91 394,340 -2,760
<br />Calendar year 1991 +13,950
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<br />HI Vado Reservoir.-Water-stage recorder and surface follower, lat 36035'39", long 106044'00", on Rio Chama. Storage began In January
<br />1935.. Capacity, 186,250 acre-ft at gage height 6,902.0 feet (crest of spillway); dead storage,. 480 acre-ft, below gage height 6,775.0 ft
<br />(invert of outlet works), as derermlned by survey in 1984. Datum 01 gage Is 821 feet above mean sea level, datum of 1929. Storage
<br />includes both Rio Grande and transmountaJn water.
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<br /> Month-end gage height, in feel, and contents, in acre-feet
<br />Dare Gage height Contents Change in oontents 1M Warer
<br />ecember 31, 1990 6,872.08 104,500 85,690
<br />nuary 31, 1991 6,870.07 100,170 -4,330 80,720
<br />bruary 28 6,870.70 101,510 + 1,340 81,530
<br />arch 31 6,880.60 124,520 +23,010 104,650
<br />lril30 6,897.50 172,010 +47,490 152,220
<br />ly31 6,897.33 171,490 -520 151.270
<br />Ie 30 6,894.27 162,160 -9,330 143,440
<br />r 31 6,891.74 154,680 -7,480 136,010
<br />gust 31 6,888.88 146,490 -8,190 127,84(1
<br />ltember 30 6,886.71 140,480 -6,010 121,980
<br />ober31 6,882.85 130,25(1 -10,230 111,780
<br />lember 30 6.881.33 126,360 -3,890 107,140
<br />ember 31 6,877.65 117.270 -9,090 98,170
<br />!ndar year 1991 +12,770
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