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<br />
<br />UNITED STATES DEPARorA OF THE INTERIOR
<br />GEOLOGICAL SURVEY
<br />Water Resources Division
<br />Utah District
<br />
<br />February 1972
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<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BAS IN
<br />
<br /> C:r~ 7~
<br /> Monthly discharge Maximum 'Minimum dan"
<br /> Percent of fl' 80)/
<br />Stream ,!/Median (Cfs) Mesn (Cfs) 3D-year -1'0
<br /> 1931-60 this month median Cfs-davs Acre-feet Cfs Date Cfs Date
<br />Colorado River
<br />near Cisco, Utah 2,690 3,888 145 112,760 223,700 4,300 24 2,890 1
<br />Adjusted!l./ 3,009 112 87,270 173,100 - - - -
<br />Green River at
<br />Green River, Ut 2,074 5,032 243 145,930 289,500 6,860 20 3,540 4
<br />Adjusted.f.1 3,816 184 110,663 219,500 - - - -
<br />San Juan River 111,400 4
<br />near Bluff, Ut 867 1,936 223 56,150 2,030 11 1,760
<br />Adjusted~/ 1,001 115 29,040 57,600 - - - -
<br />
<br />a/ Median of mean discharges for the month for 3D-year period 1931-60.
<br />lit 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 1, 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 capacity usable contents month
<br /> so. mi. (acre-feet) (acre-feet) (acre-feet)
<br />Blue Mesa Reservoir near
<br />Sapinero, Colorado 3,426 829,500 321,100 -50,600
<br />Flaming Gorge Reservoir at 2,/15,100 3,749,000 2,562,000 -70,000
<br />Flaming Gorge Dam, Utah
<br />Navajo Reservoir near !,/ 3, 230 .1,696,000 875,100 -53,800
<br />Archuleta, New Mexico
<br />Lake Powell Reservoir at 2,/107,700 25,002,000 13,112,000 +169,000
<br />Glen Canyon Dam, Arizona
<br />Totals 31,276,500 16,870,200 -5,400
<br />
<br />,!/ Approximate
<br />
<br />Leon J. Jensen, Engineer
<br />Salt Lake City, Utah
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