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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 />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BAS IN
<br />
<br />April 1972
<br />
<br /> Monthly discharge Maximum dailv Minimum dail" J
<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 7,081 3,088 43.6 92,640 183,800 4,420 14 2.630 8
<br />Adjusted.!!./ 3,131 44.2 93,925 186,300 - - - -
<br />Green River at
<br />Green River, Ut 7,381 5,339 72.3 160,170 317,700 8,250 18 3,130 7
<br />Adjuste~7 6,868 93.0 206,050 408,700 - - - -
<br />San Juan River
<br />near Bluff, Ut 3,254 1,074 33.0 32,208 63,880 1,820 1 600 26
<br />Adjusted!!/ 1,226 37.7 36,794 72 , 980 - - - -
<br />
<br />,!/ Median of mean discharges for the month 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 /> s". mi. (acre-feet) (acre-feet) (acre-feet)
<br />Blue Mesa Reservoir near
<br />Sapinero, Colorado 3,426 829,500 319,900 +2,500
<br />Flaming Gorge Reservoir at a/ 2,728,000 +91,000
<br />Flaming Gorge Dam, Utah 15,100 3,749,000
<br />Navajo Reservoir near
<br />Archuleta, New Mexico a/ 3,230 1,696,000 846,800 + 9,100
<br />Lake Powell Reservoir at
<br />Glen Canyon Dam, Arizona a/l07,700 25,002,000 13,224,000 -225,000
<br />Totals 31;276,500 17,118,700 -122,400
<br />
<br />,!/ Approximate
<br />
<br />Leon J. Jensen, Engineer
<br />'Salt Lake City, Utah
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