After reviewing the manual snow survey data from the California Department of Water Resources that was provided the week of May 6, the Bureau of Reclamation has cut previously announced allocations.
The Friant Division Class 1 water supply allocation is being decreased from 50 percent to 45 percent. Class 2 water remains at 0 percent. (The first 800 acre-feet of water supply is considered Class 1 and the next 1.4 million acre-feet is considered Class 2.). The latest information on upstream operations, canal demand schedules, and the San Joaquin River Restoration Program flow release schedule have also been incorporated into this allocation update.
Currently, precipitation in the Upper San Joaquin River watershed at Huntington Lake is about 20.4 inches, which is about 51 percent of average for this time of year. Additionally, accumulated natural river flow to date for Water Year 2013 for the Upper San Joaquin Basin is about 600,000 acre-feet, which is about 67 percent of the historical average for this date, and about 33 percent of the total water year average of 1.8 million acre-feet.
Water supply updates will be made as appropriate and will be posted on http://www.usbr.gov/mp/pa/water. For additional information, please contact the Public Affairs Office at 916-978-5100 (TTY 916-978-5608) or email [email protected].
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