A sign on a farm trailer reading 'Food grows where water flows,' hangs over dry, cracked mud at the edge of a farm April 16, 2009 near Buttonwillow, California. (Photo by David McNew/Getty Images)

Published on June 18, 2009

The California Department of Water Resources issued its lowest ever initial estimate on how much water will be delivered from the State Water Project. Winter rain and snowfall may provide relief, but will likely not counteract three years of drought.

Published on November 30, 2009

The rocks surrounding this dry section of the San Luis Reservoir, show the where the water line used to be. The water supply is down more than 185 feet from normal levels. (Photo by David Paul Morris/Getty Images)

Published on June 18, 2009

The white 'bathtub ring' on the rocks around Lake Mead is from mineral deposits left by higher levels of water.

Published on June 18, 2009

Water reserves are drying up in the Lexington Reservoir located near Los Gatos, California. The reservoir supplies water to Silicon Valley residents. (Photo by Simon Davidson/Flickr)

Published on June 18, 2009

The California Aqueduct carries water from the Sierra Nevada Mountains to Southern California as urgent calls for California residents to conserve water grow. (Photo by David McNew/Getty Images)

Published on June 18, 2009

Water authorities were ordered to cutback on the use of large pumps in the Sacramento-San Joaquin River Delta water system to help preserve the endangered smelt fish. (Photo courtesy of U.S. Fish & Wildlife Services)

Published on June 18, 2009

Dust billows as a farmer plows a dry field April 16, 2009 near Buttonwillow, California. Central Valley farmers and farm workers are suffering through the third year of the worsening California drought with extreme water shortages and job losses.

Published on May 11, 2009

The white 'bathtub ring' on the rocks along the Colorado River is from mineral deposits left by higher levels of water. A seven year drought and increased water demand spurred by explosive population growth in the Southwest has caused the water level to drop over 100 feet to its lowest level since the 1960s.

Published on April 21, 2009

Lake Oroville, the main reservoir for the Calif. water project system, is 25 percent below average and at 64 percent of capacity. (Photo courtesy of Association of California Water Agencies)

Published on June 18, 2009

The Kern River, located near Bakersfield, remains dry -- a condition that is expected to worsen during California's severe drought. (Photo by David McNew/Getty Images)

Published on June 18, 2009