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<br />UNITED STATES DEPARTMENT OF THE INTERIOR
<br />GEOLOGICAL AVEY
<br />Water Resources~ivision
<br />Utah District
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<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BASIN
<br />March 1971
<br />
<br /> Month1v discharo:e Maximum daily Minimum daily
<br /> Percent of
<br />Stream ~/ Median (Cfs) Mean (Cfs) 30-year
<br /> 1931-60 this month median Cfs -days Acre-feet Cfs Date Cfs Date
<br />Colorado River
<br />near Cisco, Utah 3,059 6,327 207 196,150 389,100 8,660 26 4,990 23
<br />AdjustedE./ 4,454 146 138,089 273,900 - - - -
<br />Green River at
<br />Green River, Ut 3,840 2,950 77 91,510 181,500 3,600 26 1,840 3
<br />AdjustedE./ 4,041 105 125,284 248,500 - - - -
<br />San Juan River ~ I
<br />near Bluff, Ut 1,222 1,645 135 51,010 101,200 2,960 1,020 17
<br />Adjusted.9.! 1,317 108 40,837 81,000 - - -
<br />
<br />a/ Median of mean discharges for the month for 30-year period 1931-60.
<br />~/ Adjusted for change in storage in Blue Mesa Reservoir. Storage began October 27, 1965.
<br />~/ Adjusted for change in storage in Flaming Gorge Reservoir. Storage began November 1, 1962.
<br />.9./ Adjusted for change in storage in Navajo Reservoir. Storage began June 27, 1962.
<br />
<br /> Drainage area Usable End-of-month Change during
<br />Reservoir above dam c apad ty usable contents month
<br /> sa. mi. (acre-feet) ( acre-feet) (acre-feet)
<br />Blue Mesa Reservoir near
<br />Sapinero, Colorado 3,426 829,500 305,700 -115,200
<br />Flaming Gorge Reservoir at ~/ 3,749,000 1,874,000 67,000
<br />Flaming Gorge Dam, Utah 15,100 +
<br />Navajo Reservoir near
<br />Archuleta, New Mexico a! 3,230 1,696,000 831,800 - 20,200
<br />Lake Powell Reservoir at
<br />Glen Canyon Dam, Arizona fl,./107,700 25,002,000 12,434,000 + 20,000
<br />Totals 31,276,500 15,445,500 - 48,400
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<br />~/ Approximate
<br />
<br />Leon J. Jensen, Engineer
<br />Salt Lake City, Utah
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