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<br />UNITED STATES DEPARTMENT OF THE INTERIOR
<br />GEOLOGICAL A.VEY
<br />WATER RESOURCES~IVISION
<br />UTAH DISTRICT
<br />
<br />f /If} .
<br />
<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BASIN
<br />(Provisional records for February 1969)
<br />
<br /> Monthly dischar"e Maximum daily Minimum daily
<br /> Percent of
<br />Stream !o/ 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 3,529 131 98,820 196,000 4,480 17 2,290 6
<br />Adjusted b/ 3,168 118 88,697 175,930 - - - -
<br />Green River at
<br />Green River, Utah 2,074 5,610 270 157,070 311,500 6,620 24 4,150 3
<br />Adjusted c/ 3,560 172 99,674 195,600 - - - -
<br />San Juan River
<br />near Bluff, Utah 867 2,359 272 66,060 131,000 2,790 17 1,750 11
<br />Adjusted d/ 787 91 22,032 44,100 - - - -
<br />
<br />a/ Median of mean discharges for June for 30-year period 1931-60.
<br />~/ Adjusted for change in storage in Blue Mesa Reservoir. Storage began October 27, 1965.
<br />c/ Adjusted for change in storage in Flaming Gorge Reservoir. Storage began November 1, 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 /> sa. mi. (acre-feet) (acre-feet) (acre-feet)
<br />Blue Mesa Reservoir nr
<br />Saninero Colorado 3 426 829 500 422 330 -20 070
<br />Flaming Gorge Reservoir at 15.100a/
<br />Flaming Gorge Dam, Utah 3,749,000 1,669,100 -115,900
<br />Navajo Reservoir nr 3,230a/
<br />Archuleta, New Mexico 1,696,000 707,300 -86,900
<br />Lake Powell Reservoir at
<br />Glen Canyon Dam, Arizona 107,700a/ 25,002,000 7,337,000 +187,000
<br /> Totals 31 276 500 10 135 730 - 35 870
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<br />!o/ Approximate
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<br />Ted Arnow, District Chief (WRD)
<br />Salt Lake City, Utah
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