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<br />. <br /> <br />UNITED STATES DEPARTME!<AF THE <br />GEOLOGICAL~VEY <br />Water Resources Division <br />Utah District <br /> <br />INTERIOR <br /> <br />~ <br /> <br />l'ol <br />CO <br />..... <br /> <br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BASIN <br /> <br />August 1971 <br /> <br />,~ <br /> <br /> Monthly discharge Maximum dailv 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 3,095 3.676 119 113,950 226,000 4,780 1 2.480 17 <br />Adjusted!?1 3.036 98 94,l27 186,700 - - - - <br />Green River at <br />Green River, Ut 2,683 3,226 120 100,010 198,400 35,400 21 2,970 6 <br />Adjusted.f.7 2,560 95 79.355 157,400 - - - - <br />San Juan River <br />near Bluff, Ut 1,056 1,530 145 47,429 94,080 5,340 22 423 17 <br />Adjusted.!!.! 1,644 156 50,960 101,080 - - - - <br /> <br />al Median of mean discharges for the month for 30-year period 1931-60. <br />h/ 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 />~/ 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 capacity usable contents month <br /> so. mi. (acre-feet) (acre-feet) (acre-feet) <br />Blue Mesa Reservoir near <br />Sapinero, Colorado 3,426 829,500 580,600 -39,300 <br />Flaming Gorge Reservoir at 2.1 15,100 3,749,000 3,001,000 -41,000 <br />Flaming Gorge Dam, Utah <br />Navajo Reservoir near g/ 3,230 1,696,000 997,900 + 7,000 <br />Archuleta, New Mexico <br />Lake Powell Reservoir at <br />Glen Canyon Dam, Arizona a/107,700 25,002,000 13,938,000 -380,000 <br />Totals 31,276,500 18,517,500 -453,300 <br /> <br />.!I Approximate <br /> <br />Leon J. Jensen, Engineer <br />Salt Lake City, Utah <br />