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<br />UNITED STATES DEPARTMENT OF THE INTERIOR
<br />GEOLOGICAL SURVEY
<br />WATER RESOURCES DIVISION
<br />Utah District
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<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BASIN
<br />(Provisional records for February 1968)
<br />
<br /> Month1v dischante Maximum dailv Minimum dailv
<br /> Percent 0 f ..
<br />Stream 2.1 Median (ds) 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 ~I 2,690 3,476 129 100,790 200,300 4,120 23 - -
<br />Adjusted bl 2,956 110 85,734 170,050 - - - -
<br />Green River at
<br />Green River, Ut. ~I 2,074 3,747 181 108,660 215,500 4,490 27-29 - -
<br />Adjusted cl 2,234 108 64,785 128,500 - - - -
<br />San Juan River
<br />near Bluff, Utah 867 894 103 25,928 51,430 1,140 15 490 1
<br />Adjusted il 819 94.5 23,761 47,130 - - - -
<br />
<br /> Total End-of-month Change during
<br />Reservoir capacity contents month
<br /> (acre-feet) (acre-feet) (acre-feet)
<br />Blue Mesa 940,800 353,800 -30,250
<br />Flaming Gorge 3,789,000 2,077,900 -87,000
<br />Navajo 1,709,000 588,000 -4,300
<br />Lake Powell 27,000,000 8,201,000 +64,000
<br />Totals 33,438,800 11,220,700 -57,550
<br />
<br />~I Median of mean discharges for February for 30-
<br />year period 1931-60.
<br />EI Adjusted for change in storage in Blue Mesa
<br />Reservoir. Storage began November 27, 1965,
<br />~I Adjusted for change in storage in Flaming Gorge
<br />Reservoir. Storage began November 1, 1962.
<br />il Adjusted for change in storage in Navajo Reservoir.
<br />Storage began June 28, 1962.
<br />~I Ice affected.
<br />
<br />Ted Arnow
<br />District Chief (WRD)
<br />Salt Lake City, Utah
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