Lower Colorado River Operations Schedule
Releases from Davis and Parker dams will vary from about 4,500 cubic feet per second
(cfs) to 25,000 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:
Parker Davis Hoover
Dam Lake Dam Lake Dam Lake
Average Havasu Average Mohave Average Mead
Release Elev. Release Elev. Release Elev.
Date (cfs) (ft) (cfs) (ft) (cfs) (ft)
---- ----- ---- ----- ---- ----- ----
Sep 27 11000 446.6 14200 637.1 13400 1084.5
Sep 28 10500 446.5 14200 637.0 13400 1084.4
Sep 29 10000 446.4 14200 636.9 13400 1084.3
Sep 30 9500 446.4 14200 636.8 13400 1084.2
Oct 1 10000 446.4 14200 636.6 10900 1084.1
Oct 2 11000 446.2 13800 636.2 8900 1084.1
Oct 3 11500 446.0 13800 635.8 8200 1084.0
Average 10500 14100 11700
Oct 4 to
Oct 10 8100 445.9 12400 634.4 10000 1083.7
Oct 11 to
Oct 17 7400 446.0 12000 633.2 10000 1083.3
Current Lake Powell storage is 15,277 thousand acre-feet (KAF) (63 percent of
capacity). Lake Mead storage is 10,183 KAF (39 percent of capacity). Total
system storage is 33,205 KAF (56 percent of capacity). Lake Powell elevation
is 3,633.75 feet.
The observed April-July inflow for the Colorado River is 5.8 million acre-feet or
73 percent of average.
Yesterday, the average Colorado River flows were 1,050 cfs near the Yuma Fourth
Avenue Bridge and 1,307 cfs at the Northerly International Boundary. The
average release from Painted Rock Dam was 0 cfs and Alamo Dam was 56 cfs. The
Morelos Dam diversions for the week of 27-Sep-2010 are expected to be 1,127 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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