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<br />.
<br />
<br />UNITED STATES DEPARTMENT aHE INTERIOR
<br />GEOLOGICAL SURVEY
<br />Water Resources Division
<br />Utah District
<br />
<br />RECEIVED
<br />JUN 0 81972
<br />
<br />f~'
<br />
<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BAS IN
<br />/ ...........~' /
<br />June 1971---...... ." ~/ ' of "'"
<br />......-. .,,!
<br />
<br />COLO. WATER
<br />iXlNSBNA lION BOAftO
<br />
<br />o
<br />c.
<br />r...
<br />C..;J
<br />c.;,
<br />'~
<br />
<br /> Monthly discharge Maximum dailv Minimum dailu
<br /> Percent of
<br />Stream a/Median (Cfs) Mean (Cfs) 3D-year
<br /> 1931-60 this month median Cfs-davs Acre-feet Cfs Date Cfs Date
<br />Colorado River
<br />near Cisco. Utah 18,345 7,034 38.3 218,040 432,500 11,100 23 3,590 1
<br />Adjuste<i2/ 8,114 44.2 251,525 498,900 - - - -
<br />Green River at
<br />Green River. Ut 14,180 10,268 72.4 318,310 631,400 13,500 20 5,500 4
<br />Adjuste~7 13,098 92.4 406,050 805,400 - - - -
<br />San Juan River
<br />near Bluff, Ut 5,334 1,200 22.5 37,188 73,760 1,610 7 819 15
<br />Adjuste~/ 2,258 42.3 70.000 138,860 - - - -
<br />
<br />a/ Median of mean discharges for the month for 30-year period 1931-60.
<br />h/ 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 />~/ 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 near
<br />Sapinero, Colorado 3,426 829,500 386,300 +66,400
<br />Flaming Gorge Reservoir at a/ 3,749,000 2,902,000 +174,000
<br />Flaming Gorge Dam. Utah 15,100
<br />Navajo Reservoir near !il/ 3,230 1,696 , 000 911,900 +65,100
<br />Archuleta, New Mexico
<br />Lake Powell Reservoir at !il/ 107,700 25,002,000 13,363,000 +139,000
<br />Glen Canyon Dam, Arizona
<br />Totals 31,276,500 17,563,200 +444,500
<br />
<br />!!/ Approximate
<br />
<br />Leon J. Jensen, Engineer
<br />Salt Lake City, Utah
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