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<br />UNITED STATES DEPARTMENT OF THE INTERIOR
<br />GEOLOGICAL SURVEY
<br />WATER RESOURCES DIVISION
<br />Utah District
<br />
<br />rr-/? ~
<br />
<br />STREAMFLOW AND RESERVOIR CONTENTS IN UPPER COLORADO RIVER BASIN
<br />(Provisional records for May 1969)
<br />
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<br />
<br /> Monthly discharge Max imum da il y Minimum daily
<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 18,345 16,848 91.8 522,300 1,036,000 21,000 28 13,100 10
<br />Adjusted b/ 19,507 106 604,713 1,199,430 - - - -
<br />Green River at
<br />Green River, Utah 14,810 18,106 122 561,300 1,113,000 20,500 16,17 10,800 2
<br />Adjusted c/ 19,775 134 613,016 1,215,900 - - - -
<br />San Juan River
<br />near Bluff, Utah 5,334 4,292 80.5 133,040 263,900 5,960 24 2,340 17
<br />Adjusted d/ 7,026 132 217,800 432,000 - - - -
<br />
<br />a/ Median of mean discharges for June 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 /> so. mi. (acre-feet) (acre-feet' {acre-feet'
<br />Blue Mesa Reservoir nr
<br />Saoinero Colorado 3 426 829 500 525 700 +163 430
<br />Flaming Gorge Reservoir at
<br />Flaming Gorge Dam Utah a/ 15 100 3 749 000 1 815 000 +102 900
<br />Navajo Reservoir nr
<br />Archuleta New Mexico a/ 3 230 1 696 000 *1 063 500 +168 100
<br />Lake Powell Reservoir at
<br />Glen Canyon Dam Arizona a/107,700 25,002,000 9,553,000 +1,504,000
<br /> Totals 31 276 500 12 957 200 +1 938 430
<br />
<br />!!-/ Approximate
<br />* Dead storage figure changed from 175,200 acre-ft
<br />to 12,600 acre-ft by U.S. Bureau of Reclamation.
<br />
<br />Ted Arnow, District Chief (WRD)
<br />Salt Lake City, Utah
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