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<br />.
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<br />.
<br />RECEiVED
<br />AUG 0 '71973
<br />
<br />UNITED STATES DE PAR. OF THE INTERIOR
<br />GEOLOG ICAL SURVEY
<br />Water Resources Division
<br />Utah District
<br />
<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BAS IN
<br />July 1973
<br />
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<br />
<br /> Monthly discharge Maximum daily Minimum daily
<br /> Percent of
<br />Stream ,!/Median (Cfs) Mean (Cfs) 3D-year
<br /> 1931-60 this month median Cfs-davs Acre-feet Cfs Date Cfs Date
<br />Colorado Rivet
<br />near Cisco, Utah 6,778 13,999 207 432,410 857,700 22,820 1 11,600 19
<br />Adjuste@1 15,618 238 484,144 960,300 - - - -
<br />Green River at
<br />Green River, Ut 5,975 8,,416 141 260,900 517,500 13.200 1 6,050 19
<br />Adjusted,!:} 8,872 148 275,019 545,500 - - - -
<br />San Juan River
<br />near Bluff A Ut 1,754 6,602 376 204,680 406,000 10,340 2 5,000 24
<br />Adjuste~1 5,255 300 162,894 323,100 - - - -
<br />
<br />a/ Median of mean discharges for the month for 3D-year period 1931-60.
<br />lil Adjusted for change in storage in Blue Mesa Reservoir. Storage began October 27, 1965.
<br />cl Adjusted for change in storage in Flaming Gorge Reservoir. Storage began November 1, 1962.
<br />~I 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 3,426 829,500 827,000 +102,600
<br />Flaming Gorge Reservoir at !!I 15.100 3,749,000 3,322,000 28,000
<br />Flaming Gorge Dam, Utah +
<br />Navajo Reservoir near !!I 3,230 1,696,000 1,644,100 - 82,900
<br />Archuleta, New Mexico
<br />Lake Powell Reservoir at !!I 107,700 25,002,000 17,039,000 +935.000
<br />Glen Canyon Dam, Arizona
<br />Totals 31,276,500 22,832,100 +982,700
<br />
<br />a/,Approximate
<br />
<br />Leon J. Jensen, Engineer
<br />Salt Lake City, Utah
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