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 24,000 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)
       -----       -----     -----     -----     -----     -----      -----
       May 20      12700     448.2     15800     642.6     16400      1087.5
       May 21      12600     448.1     15800     642.6     16400      1087.3
       May 22      12400     448.1     15800     642.6     16400      1087.2
       May 23       6500     448.6     15800     642.6     16400      1087.1
       May 24      12900     448.5     15800     642.6     16400      1087.0
       May 25      12800     448.4     15800     642.6     16400      1086.9
       May 26      13000     448.2     15800     642.5     15100      1086.8
       
       Average     11800               15800               16200
       
       May 27 to
       Jun  2      11400     448.3     15700     642.5     16300      1085.9
       
       Jun  3 to
       Jun  9      12000     448.5     15300     642.7     16300      1085.2


Current Lake Powell storage is 9,775 thousand acre-feet (KAF) (40 percent of capacity).
Lake Mead storage is 10,677 KAF (41 percent of capacity).  Total system storage is 27,983
KAF (47 percent of capacity).  Lake Powell elevation is 3,578.07 feet.

The April-July unregulated inflow forecast for the Colorado River is 9.20 million acre-
feet or 129 percent of average.

Yesterday, the average Colorado River flows were 722 cfs near the Yuma Fourth Avenue
Bridge and 1,805 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-May-2019 are expected to be 1,870 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-May-2019


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.