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<br />
<br />UNITED STATES DEPARTMENT OF THE INTERIOR
<br />GEOLOGICAL SURVEY
<br />WATER RESOURCES DIVISION
<br />Utah District
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<br />
<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BASIN
<br />(Provisional records for April 1967)
<br />
<br /> Month1v dischar"e Maximum daily Minimum dailv
<br /> Percent of
<br />Stream !!I Median (ds) Mean (ds) 30-year
<br /> 1931-60 this month median Cfs-davs Acre-feet Cfs Date Cfs Date
<br />Colorado River
<br />near Cisco, Utah 7,081 3,465 48.9 103,960 206,200 4,140 13 2,700 19
<br />Adjusted 'E,I 7,081 3,222 45.5 96,649 191,700 - - - -
<br />Green River at
<br />Green River, Ut. 7,381 4,390 59.5 131,700 261,200 5,260 23 3,740 1
<br />Adjusted ~I 7,381 5,448 73.8 163,451 324,200 - - - -
<br />San Juan River
<br />near Bluff, Ut. 3,254 525 16.1 15,745 31,230 981 1 254 23
<br />Adjusted dl 3,254 943 29.0 28,299 56,130 - - - -
<br />
<br /> Total . End-of-month Change during
<br />Reservoir capacity contents month
<br /> (acre-feet) (acre-feed (acre-feed
<br />Blue Mesa . 940,800 375,600 -14,500
<br />Flaming Gorge 3,789,000 2,155,000 +63,000
<br />Navajo 1,709,000 381,500 +24,900
<br />Lake Powell 27,000,000 7,066,000 -302,000
<br />Totals 33,438,800 9,978,100 -228,600
<br />
<br />~I Median of mean discharges for April for 30-
<br />year period 1931-60,
<br />'E,I Adjusted for change in storage in Blue Mesa
<br />Reservoir. Storage began November 27, 1965.
<br />cl Adjusted for change in storage in Flaming
<br />- Gorge Reservoir, Storage began November 1,
<br />1962.
<br />ill Adjusted for change in storage in Navajo
<br />Reservoir. Storage began June 28, 1962.
<br />
<br />Ted Arnow
<br />District Chief (WRD)
<br />Salt Lake City, Utah
<br />
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