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<br />. <br /> <br />UNITED STATES DEPARTMENT OF THE INTERIOR <br />GEOLOGICAL SURVEY <br />Water Resources Division <br />Utah District <br /> <br />. <br /> <br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BASIN <br /> <br />o <br /><:3 <br />['.) <br />C() <br />CJl <br />, ;> <br /> <br />February 1973 <br /> <br /> Monthly oischarge Maximum dailv Minimum dailv <br /> Percent of <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 2,690 4,190 156 117,330 232,700 4,300 6 4,100 13 <br />Adjusted.!l.l 3,857 143 107,991 214,200 - - - - <br />Green River at <br />Green River, Ut 2,074 4,112 198 115,130 228,400 4,400 26 4,000 1 <br />AdjustedE.! 2,546 123 71, 288 141,400 - - - - <br />San Juan River <br />near Bluff. Ut 867 3,156 364 88,360 175,300 4,980 8 2,040 5 <br />Ad j us t ed.!!.1 2,119 244 59,340 117,700 - - - - <br /> <br />al Median of mean discharges for the month for 3D-year period 1931-60. <br />bl 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 dam capac ity usable contents month <br /> sa. mi. (acre-feet) (acre-feet) (acre-feet) <br />Blue Mesa Reservoir near <br />Sapinero, Colorado 3,426 829,500 315,000 -18,500 <br />Flaming Gorge Reservoir at 13.1 15,100 3,749,000 2,875,000 -87,000 <br />Flaming Gorge Dam, Utah <br />Navajo Reservoir near ~I 3,230 1,696,000 888,200 -57,600 <br />Archuleta, New Mexico <br />Lake Powell Reservoir at ~I 107,700 <br />Glen Canyon Dam, Arizona 25,002,000 12, 21 7 , 000 -36,000 <br />Totals 31,276,500 16,295,200 -199,100 <br /> <br />13.1 Approximate <br /> <br />Leon J. Jensen, Engineer <br />Salt Lake City, Utah <br />