"California is in its fifth year of drought. Rain and snowstorms in Northern and Central California in the winter of 2015-2016 improved hydrologic conditions but did not eliminate the state's ongoing drought. As of March 29, 2016, approximately 73% of the state was suffering from severe drought conditions. This figure represents an improvement from one year ago, when 93% of the state fell under the severe drought designation. The stress on water supplies due to the drought has resulted in cutbacks in water deliveries to districts receiving water from federal and state facilities, in particular the federal Central Valley Project (CVP, operated by the Bureau of Reclamation within the Department of the Interior) and the State Water Project (SWP, operated by the state of California). These cutbacks are continuing in 2016, although their exact magnitude has yet to be finalized. In 2015, California Governor Jerry Brown mandated a 25% reduction in water use for nonagricultural users. In November 2015, Governor Brown directed the State Water Resources Control Board (SWRCB) to extend restrictions if drought conditions persisted. The SWRCB extended and revised emergency conservation regulations on February 2, 2016. A drought declaration made by Governor Brown on January 17, 2014, also remains in effect."
CRS Report for Congress, R44456
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html