12/21 Lower Colorado River Operations Schedule
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Colorado River



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Lower Colorado River Operations Schedule

Releases from Davis and Parker Dams will vary from about 8,000 cfs to 22,000 cfs during a 24-hour period. River levels will vary during the 24-hour periods with the higher levels coinciding with periods of peak hydroelectric power generation. Levels below the dams are usually highest during the afternoon and early evening. Average daily releases may vary in response to changing conditions.

Average daily releases and midnight lake elevations for the week, as well as anticipated averages for the following 2 weeks, are scheduled as follows:

Date Parker Dam Average Release (cfs) Lake Havasu Elev. (cfs) Davis Dam Average Release (cfs) Lake Mohave Elev. (ft) Hoover Dam Average Release (cfs) Lake Mead Elev. (ft) Glen Canyon Dam Average Release (cfs)
Dec 20 7,000 446.0 7,800 638.6 11,000 1213.4 17,500
Dec 21 3,000 446.3 6,800 638.8 11,000 1213.4 17,500
Dec 22
2,500
446.6 6,800 639.1 11,000

1213.5

17,500
Dec 23
2,500
446.7 6,800 639.4 11,000 1213.6 17,500
Dec 24 7,000 446.4 9,500 639.3 8,600 1213.7 17,500
Dec 25 7,500 446.0 9,500 639.1 7,400 1213.8 17,500
Dec 26 7,000 445.8 9,900 639.0
8,600
1213.9 17,500
Average 6,600 andnbsp; 9,200 andnbsp; 10,400 andnbsp; 17,500
Dec 27 Jan 2 5,600
445.7
8,700
639.9
10,600 1214.5 17,300
Jan 3 Jan 9 5,200
445.9
9,000
640.4
10,100
1215.1 16,300

Current Lake Powell storage is 21,672 thousand acre-feet (KAF) (90 percent of capacity). Lake Mead storage is 24,844 KAF (91 percent of capacity). Total system storage is 51,946 KAF (92 percent of capacity). Lake Powell elevation is 3682.8 feet.

Yesterday, the average Colorado River flows were 726 cfs near the Yuma Fourth Avenue Bridge and 1,840 cfs at the Northerly International Boundary. The average release from Painted Rock Dam was 0 cfs and Alamo Dam was 25 cfs. The Morelos Dam diversions for the week of Dec 20th are expected to be 2,060 cfs.

ALL RIVER USERS should remember that fluctuating river flows may conceal or create natural hazards such as moving sandbars, gravel bars, unstable riverbanks, floating or submerged debris, or other unfamiliar obstacles. Caution should be exercised while using the river between Davis Dam and the Mexican Border at San Luis, Arizona.

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