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<br />UNITED STATES DEPARTMENT OF THE INTERIOR
<br />GEOLOGICAL SURVEY
<br />WATER RESOURCES DIVISION
<br />Utah District
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<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BASIN
<br />
<br /> Monthlv dischai"e Maximum dail, Minimum dailv
<br /> Percent of
<br />Stream 2.1 Median (Cfs) Mean (Cfs) 30-year
<br /> 1931-60 this month median Cfs-davs Acre-feet Cfs Date Cfs Date
<br />Colorado River
<br />near Ciscob Utah 2,768 4,987 180 154,590 306,600 5,600 1 4,460 15
<br />Adjusted_/ 3,710 134 114,999 228,100 - - - -
<br />Creen River at
<br />Creen River, Utah 1,829 2,350 128 72,850 144,500 2,800 2,3,6 2,070 18
<br />AdjustedE./ 1,797 98.3 55,710 110,500 - - - -
<br />San Juan River
<br />near Bluff, Utah 632 2,520 399 78,120 155,000 2,720 19 2,330 14
<br />Adjuste~1 1,025 162 31,762 63,000 - - - -
<br />
<br />al Median of mean discharges for the
<br />hi Adjusted for change in storage in
<br />~/ Adjusted for change in storage in
<br />~I Adjusted for change in storage in
<br />
<br />month for 30-year period 1931-60.
<br />Blue Mesa Reservoir. Storage began October 27, 1965.
<br />Flaming Gorge Reservoir. Storage began November 1, 1962.
<br />Navajo Reservoir. Storage began June 27, 1962.
<br />
<br /> Drainage area Usable End-of-month Change during
<br />Reservoir above dam capacity usable contents month
<br /> so. mi. (acre-feet) (acre-feet) ( acre-feet'
<br />Blue Mesa Reservoir near
<br />Sapinero, Colorado 3,426 829,500 647,700 -78,500
<br />Flaming Corge Reservoir at
<br />F1aminlt Gorlte Dam Utah a/ 15,100 3,749,000 1,761,000 -34,000
<br />Navajo Reservoir near
<br />Archuleta, New Mexico al 3,230 1,696 , 000 1,049,000 -92,000
<br />Lake Powell Reservoir at
<br />Glen Canyon Dam, Arizona .!/I07,700 25,002,000 12,129,000 -108,000
<br />Totals 31,276,500 15,586,700 -312,500
<br />
<br />~/ Approximate
<br />
<br />Leon J. Jensen, Engineer
<br />Salt Lake City, Utah
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