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<br />UNITED STATES DEPARTMENT OF THE INTERIOR
<br />GEOLOGICAL SURVEY
<br />Water Resources Division
<br />Utah District
<br />
<br />11 (J.
<br />f."
<br />
<br />.
<br />
<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BASIN
<br />June 1971
<br />
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<br />
<br /> Monthly discharge Naximum daily. Minimum dail v
<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 22,485 19,097 85 572,900 1,136,000 22,400 19 15,400 13
<br />Adjusted~/ 22,714 101 681,422 1,351,600 - - - -
<br />Green River at
<br />Green River, Ut 19,435 17.933 92 538,000 1,067,000 21,700 22 13,600 9
<br />Adjustcd!:.! 26,552 137 796,572 1 580,000 - - - -
<br />San Juan River
<br />near Bluff, Ut 5,105 2,187 43 65,620 130,160 2,760 23 1,500 3
<br />Adjusteci2.1 3,218 63 96,526 191,460 - - - -
<br />
<br />a/ Median of mean discharges for the month for 30-year period 1931-60.
<br />b/ Adjusted for change in storage in Blue Mesa Reservoir. Storage began October 27, 1965.
<br />~I Adjusted for change in storage in Flaming Corge Reservoir. Storage began Novemher 1, 1962.
<br />~I Adjusted for change in storage in Navajo Reservoir. Storage began June 27, 1962.
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<br /> Drainage area Usable End-of-month Change during
<br />Reservoir above dam capac ity usable contents month
<br /> SQ. mi. (acre-feet) (acre-feet) (acre-feet)
<br />Blue Nesa Reservoir near
<br />Sapinero, Colorado 3,426 829,500 58l,100 +215 600
<br />Flaming Gorge Reservoir at .!I
<br />Flaming Gorge Dam, Utah 15,100 3,749,000 2,850 000 +513 000
<br />Navajo Reservoir near !.I 3,230 1,696,000 986,500
<br />Archuleta, New Mexico + 61,300
<br />Lake Powell Reservoir at
<br />Glen Canyon Dam, Arizona a/107,700 25,002,000 14,317,000 +1 286,000
<br />Totals 31 276 500 18 734 600 +2,075.QOO
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<br />2./ Approximate
<br />
<br />Leon J. Jensen, Engineer
<br />Salt Lake City, Utah
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