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<br />.
<br />
<br />UNITED
<br />
<br />STATES DEPAR~ OF THE INTERIOR
<br />GEOLOGIC~URVEY
<br />Water Resources Division
<br />Utah District
<br />
<br />d.~
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<br />
<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BASIN
<br />January 1971
<br />
<br /> Month1v discharoe Maximum dailv 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 Cisco, Utah 2,487 5,423 218 168,110 333,400 6,520 13 3,820 8
<br />Adjuste~1 3,679 148 114,041 226,200 - - - -
<br />Green River at
<br />Green River, Utah 1,632 2,378 146 73,710 146,200 2,740 25 2,000 20
<br />Adjuste~1 2,638 162 81,775 162,200 - - - -
<br />San Juan River
<br />near Bluff, Utah 609 2,610 429 80,910 160,500 3,090 22 2,090 8
<br />Adjuste~1 799 131 24 754 49 100 - - - -
<br />
<br />al Median of mean discharges for the month for 30-year period 1931-60.
<br />hi Adjusted for change in storage in Blue Mesa Reservoir. Storage began October 27, 1965.
<br />~I Adjusted for change in storage in Flaming Gorge Reservoir. Storage began November I, 1962.
<br />~I 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 darn capac ity usable contents month
<br /> sa. mi. (acre-feet) (acre-feet) (acre-feet'
<br />Blue Mesa Reservoir near
<br />Sapinero, Colorado 3,426 829,500 540,500 -107,200
<br />Flaming Gorge Reservoir at 2.1
<br />Flaming Gorge Darn, Utah 15,100 3,749,000 1, 777 , 000 + 16,000
<br />Navajo Reservoir near J!I
<br />Archuleta, New Mexico 3,230 1,696,000 937,600 -111,400
<br />Lake Powell Reservoir at
<br />Glen Canyon Dam, Arizona .!!/107,700 25,002,000 12,228,000 + 99,000.
<br />Totals 31 276 500 15 483 100 -103 600
<br />
<br />!!I Approximate
<br />
<br />Leon J. Jensen, Engineer
<br />Salt Lake City, Utah
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