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<br />.
<br />
<br />UNITED STATES DEPAR1Arr OF THE
<br />GEOLOG I"l!f'L SURVEY
<br />Water Resources Division
<br />Utah District
<br />
<br />INTERIOR
<br />
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<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BASIN
<br />
<br />September 1971
<br />
<br /> ....J?,,,. "I>
<br /> Monthly discharge Max imum . ,HIliI\'''; Minimum dailv
<br /> Percent of 1"'1'0
<br />Stream !./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 2,50B ~,90B 196 147,230 292,000 5,940 10 4,300 17
<br />Adjusted11.1 4,095 163 122,864 243,700 - - - -
<br />Green River at
<br />Green River, Ut 1,816 3,508 193 105,240 208,740 3,880 13 3,320 6
<br />AdjustedE.! 2,332 128 69,947 138,740 - - - -
<br />San Juan River
<br />near Bluff, Ut 990 812 82 24,345 48,290 1,920 9 468 27
<br />Adjuste~/ 733 74 21,976 43,590 - - - -
<br />
<br />!.I Median of mean discharges for the month for 3D-year period 1931-60.
<br />B/ 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 I, 1962.
<br />~/ Adjusted for change in storage in Navajo Reservoir. Storage began June 27, 1962.
<br />
<br /> Drainage area Usable End-oi-month Change during
<br />Reservoir above dam capacity usable contents month
<br /> sa. mi.. (acre-feet) (acre-feet) (acre-feet)
<br />Blue Mesa Reservoir near
<br />Sapinero, Colorado 3,426 829,500 532,300 -48,300
<br />Flaming Gorge Reservoir at !./ 15,100 3,749,000 2,931,000 -70,000
<br />Flaming Gorge Dam, Utah
<br />Navajo Reservoir near a/ 3,230 993,200 - 4,700
<br />Archuleta, New Mexico 1,696,000
<br />Lake Powell Reservoir at !!/107 , 700 25,002,000 13,609,000 -329,000
<br />Glen Canyon Dam, Arizona
<br />Totals 31,276,500 18,065,500 -452,000
<br />
<br />!.I Approximate
<br />
<br />Leon J. Jensen, Engineer
<br />Salt Lake City, Utah
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