Lower Colorado River Operations Schedule

Note: You may now view this report with near real-time data at this link. The link is updated hourly with our most recent operations data and operational projections.


Releases from Davis and Parker dams will vary from about 4,400 cubic feet per second
(cfs) to 20,000 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)
       -----       -----     -----     -----     -----     -----      -----
       Aug 20      10900     446.8     11400     642.2     13000      1078.5
       Aug 21      10700     446.7     12100     642.2     13000      1078.4
       Aug 22      10400     446.7     12100     642.2     13000      1078.5
       Aug 23       7600     447.0     12100     642.2     13000      1078.6
       Aug 24      10500     446.9     12100     642.2     13000      1078.6
       Aug 25      10500     446.9     12100     642.3     13000      1078.7
       Aug 26      10100     446.9     12100     642.1     10600      1078.8
       
       Average     10100               12000               12600
       
       Aug 27 to
       Sep  2       8900     446.7     12400     641.9     12500      1079.2
       
       Sep  3 to
       Sep  9       8800     447.1     13700     640.9     12300      1079.1


Current Lake Powell storage is 11,767 thousand acre-feet (KAF) (48 percent of capacity).
Lake Mead storage is 9,861 KAF (38 percent of capacity).  Total system storage is 29,205
KAF (49 percent of capacity).  Lake Powell elevation is 3,600.18 feet.

The preliminary observed April-July unregulated inflow for the Colorado River is 2.60
million acre-feet or 36 percent of average.

Yesterday, the average Colorado River flows were 678 cfs near the Yuma Fourth Avenue
Bridge and 1,596 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 20-Aug-2018 are expected to be 1,417 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.

                This Schedule can now be accessed on the Internet at:
                   www.usbr.gov/lc/region/g4000/hourly/rivops.html



Last updated: 17-August-2018


Please contact the Water Operations Control Center via e-mail at bcoowaterops@usbr.gov or via phone at (702) 293-8373 for additional questions or information.