From the Bureau of Reclamation:
In preparation for the initial 2016 water supply allocation announcement later this winter, the Bureau of Reclamation is providing an update on water supply conditions for the federal Central Valley Project (CVP). The water year (WY) runs from October 1 to September 30; the contract year for most CVP contractors runs from March 1 to February 28.
The CVP’s reservoir carryover storage from WY 2015 into WY 2016 (October 1, 2015) was 2.9 million acre-feet, which was 24 percent of capacity and 47 percent of the 15-year average for that date in six key CVP reservoirs (Shasta, New Melones, Trinity, Folsom, Millerton, and the federal portion of San Luis). The table below shows conditions in those reservoirs as of January 22 for 2016, 2015, 2014 and 2013. As of January 19, 2016, storage in major CVP reservoirs was .963 million acre-feet lower than a year ago.
“On December 30, the California Department of Water Resources (DWR) held their first manual snow survey of the year and found the water content to be 16.3 inches, or 136 percent of the January 1 average. With this promising news and El Niño storms beginning to materialize, we are feeling encouraged,” said Mid-Pacific Regional Director David Murillo. “However, storage in our reservoirs remains low, and we must be prudent as we develop initial operation plans and allocations for CVP water contractors.”
CVP Reservoir Storage Comparisons
for 2016, 2015, 2014 & 2013 and 15-Year Average
As of January 22 for Each Year
Storages Listed in Millions of Acre-feet (MAF)
CVP Reservoir
Capacities2016 % of
15-yearAverage2015 2014 2013 15-Year Average Shasta 4.552 1.859 68 1.962 1.659 3.424 2.735 Trinity 2.448 .589 40 .856 1.168 1.913 1.484 Folsom 0.977 .343 85 .447 .166 .557 .405 New Melones 2.420 .355 26 .556 1.047 1.624 1.366 Millerton 0.520 .195 70 .184 .206 .303 .280 Fed. San Luis 0.966 .129 20 .332 .335 .709 .646 Total 11.883 3.470 49 4.337 4.581 8.530 6.916
As of January 19, DWR reported that the Northern Sierra 8-Station Precipitation Index Water Year total was 25.4 inches, which is about 109 percent of the seasonal average to date and 51 percent of an average water year (which is 50.0 inches). The San Joaquin 5-Station Precipitation Index Water Year total was 20.6 inches, which is 116 percent of the seasonal average to date and 50 percent of an average water year (which is 40.8 inches).
On January 15, 2016, Reclamation, DWR, the U.S. Fish & Wildlife Service, National Marine Fisheries Service, and California Department of Fish and Wildlife submitted the 2016 Drought Contingency Plan to the State Water Resources Control Board (SWRCB). The Plan outlines projected water operations and potential modifications to water quality rules and water rights permits that project operators may seek, depending on developing hydrologic conditions. The Plan is available on the SWRCB website at http://www.waterboards.ca.gov/waterrights/water_issues/programs/drought/tucp/docs/febnov_2016plan.pdf.
As required by the exchange and settlement contracts, an initial declaration of whether 2016 is a Shasta Critical year will be announced on or before Feb. 15, 2016. Water supply updates will be made monthly or as appropriate and will be posted on Reclamation’s website at http://www.usbr.gov/mp/cvp-water.
Reclamation balances the operation of the CVP and delivery of CVP water for agricultural, municipal and industrial, and environmental purposes based on factors that include hydrology, changing river and Delta conditions, storage in CVP reservoirs, regulatory requirements, court decisions, biological opinions, environmental considerations, operational limitations and input from other agencies and organizations.
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