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<br />UNITED STATES DEPARTMENT OF THE INTERIOR
<br />GEOLOGICAL SURVEY
<br />Water Resources Division
<br />Utah District
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<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BASIN
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<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 - - - -
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<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
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<br />13.1 Approximate
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<br />Leon J. Jensen, Engineer
<br />Salt Lake City, Utah
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