A water protest sign is seen near Bakersfield, California, United States, July 23, 2015. California is in the fourth year of a catastrophic drought. Picture taken July 23, 2015. REUTERS/Lucy Nicholson 

A dry ditch is seen on Gless Ranch in Kern County, California, United States, July 23, 2015. California is in the fourth year of a catastrophic drought. Picture taken July 23, 2015. REUTERS/Lucy Nicholson 

A boy plays near a dock at Seaport Boat Launch that rests on a portion of dried up lake bed at Lake Elsinore in Lake Elsinore, California July 23, 2015. REUTERS/David McNew 

People taste recycled wastewater at the Edward C. Little Water Recycling Facility during the West Basin Municipal Water District's tour of a water recycling facility in El Segundo, California July 11, 2015. REUTERS/David McNew TPX IMAGES OF THE DAY

Fire personnel trucks are shown along a road in a burned out area of the Washington Fire near Markleeville, California in this handout photo released to Reuters June 24, 2015. A wind-whipped wildfire was about three miles (4.8 km) outside a California mountain town in the Lake Tahoe area on Wednesday, prompting road and campsite closures, as fires blackened swathes of four states on the drought-stricken U.S. West Coast. REUTERS/Matt Call/ Nevada Department of Forestry/Handout via Reuters ATTENTION EDITORS - FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS PICTURE WAS PROVIDED BY A THIRD PARTY. REUTERS IS UNABLE TO INDEPENDENTLY VERIFY THE AUTHENTICITY, CONTENT, LOCATION OR DATE OF THIS IMAGE. THIS PICTURE IS DISTRIBUTED EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS 

A firefighter from the Plumas Hotshots sets a backfire while battling the Saddle Fire in the Shasta-Trinity National Forest near Hyampom, California, June 13, 2015. An out-of-control wildfire raging through a Northern California forest as the state battles a devastating drought has forced authorities to warn about 250 people to evacuate or prepare to leave their homes in a remote town, officials said on Friday. Sparked by lightning, the wildfire has scorched more than 1300 acres in drought-parched Northern California. Picture taken June 13, 2015. REUTERS/Noah Berger TPX IMAGES OF THE DAY

A woman takes a self portrait beneath an umbrella near the San Francisco Oakland Bay Bridge during a light rain in San Francisco, California June 10, 2015. More than one-third, or 39 percent, of likely California voters surveyed by the Public Policy Institute of California named water shortages and the drought, now in its fourth year, as the state's most pressing issue. REUTERS/Robert Galbraith 

Agricultural farm land is shown next to the desert in the Imperial valley near El Centro, California May 31, 2015. California is enduring its worst drought on record. REUTERS/Mike Blake TPX IMAGES OF THE DAY 

Workers roll out artificial turf after digging up a lawn due to the drought, at a home in Laguna Niguel, California, United States May 13, 2015. California water regulators last week adopted the state's first rules for mandatory cutbacks in urban water use as the region's catastrophic drought enters its fourth year. Some communities will be required to trim water use by as much as 36 percent. REUTERS/Lucy Nicholson 

Leaflets explaining new water rules are seen in the car of Enrique Silva, Department of Water and Power (DWP) Water Conservation Response Unit supervisor, as he patrols the streets looking for people wasting water during the drought in Los Angeles, California April 17, 2015. California's cities and towns would be required to cut their water usage by up to 35 percent or face steep fines under proposed new rules, the state's first-ever mandatory cutbacks in urban water use as the state enters its fourth year of severe drought. Communities where residential customers use more than 165 gallons of water per person per day would have to cut back by 35 percent. REUTERS/Lucy Nicholson 

Homes with swimming pools are seen in the Palm Springs area, California April 13, 2015. The average daily water usage per person in Palm Springs is 201 gallons, more than double the California average. California's cities and towns would be required to cut their water usage by up to 35 percent or face steep fines under proposed new rules, the state's first-ever mandatory cutbacks in urban water use as the state enters its fourth year of severe drought. Communities where residential customers use more than 165 gallons of water per person per day would have to cut back by 35 percent. Picture taken April 13, 2015. REUTERS/Lucy Nicholson 

A golf course is seen in La Quinta, California April 13, 2015. California's cities and towns would be required to cut their water usage by up to 35 percent or face steep fines under proposed new rules, the state's first-ever mandatory cutbacks in urban water use as the state enters its fourth year of severe drought. Communities where residential customers use more than 165 gallons of water per person per day would have to cut back by 35 percent. Picture taken April 13, 2015. REUTERS/Lucy Nicholson 

A tractor collects golf balls on a driving range in the Palm Springs area, California April 13, 2015. The average daily water usage per person in Palm Springs is 201 gallons, more than double the California average. California's cities and towns would be required to cut their water usage by up to 35 percent or face steep fines under proposed new rules, the state's first-ever mandatory cutbacks in urban water use as the state enters its fourth year of severe drought. Communities where residential customers use more than 165 gallons of water per person per day would have to cut back by 35 percent. Picture taken April 13, 2015. REUTERS/Lucy Nicholson TPX IMAGES OF THE DAY FOR BEST QUALITY IMAGE ALSO SEE: GM1EB5D0S6I01 

A crow perches on a dead tree in Palmdale, California April 7, 2015. A spring storm was expected to bring several inches of rain to some areas of drought-parched California and up to two feet of snow to mountains beginning late on Monday, just days after Governor Jerry Brown ordered sweeping cuts in water use. REUTERS/Mario Anzuoni 

A buoy is seen where the water receded at Lake Cachuma in Santa Barbara, California March 27, 2015. California Governor Jerry Brown signed emergency legislation on Friday that fast-tracks over $1 billion in funding for drought relief and water infrastructure within the parched state. California is in its fourth year of a record-breaking drought. REUTERS/Lucy Nicholson 

A man stands in an empty public swimming pool in Burbank, Los Angeles, California March 19, 2015. California Governor Jerry Brown and top lawmakers on Thursday announced a $1 billion emergency legislative package to deal with the state's devastating multi-year drought. The state is entering the fourth year of record-breaking drought that has prompted officials to sharply reduce water supplies to farmers and impose strict conservation measures statewide. REUTERS/Lucy Nicholson 

Patchy snow covers a meadow in Phillips, California where the California Department of Water Resources measured the snowpack on January 29, 2015. The reading at Phillips is 2.3 inches of water equivalent, 12% of the historic average for this location. REUTERS/Max Whittaker (UNITED STATES - Tags: ENVIRONMENT) 

Houseboats sit on Lake Kaweah, well below the visible high-water mark in Lemon Cove, California January 17, 2015. A combination of record high temperatures and sparse rainfall during California's three-year drought have produced the worst conditions in 1,200 years, according to a study accepted for publication by the American Geophysical Union (AGU). Picture taken January 17, 2015. REUTERS/Lucy Nicholson (UNITED STATES - Tags: ENVIRONMENT) 

A fountain outside City Hall is shut down due to the drought, in downtown Los Angeles, California, January 6, 2015. REUTERS/Lucy Nicholson (UNITED STATES - Tags: ENVIRONMENT) 

Macario Beltran, 41, (C) a mechanic whose family's well has run dry, fills containers in his truck with water from the fire station, with his daughters Abigail, 6, (L) and Denika, 10, in Porterville, California October 14, 2014. In one of the towns hardest hit by California's drought, the only way some residents can get water to flush the toilet is to drive to the fire station, hand-pump water into barrels and take it back home. The state's three-year drought comes into sharp focus in Tulare County, the dairy and citrus heart of the state's vast agricultural belt, where more than 500 wells have dried up. Picture taken October 14, 2014. REUTERS/Lucy Nicholson (UNITED STATES - Tags: ENVIRONMENT SOCIETY TPX IMAGES OF THE DAY TRANSPORT)

ATTENTION EDITORS - PICTURE 12 OF 12 FOR WIDER IMAGE STORY 'WHEN THE WELL RUNS DRY'
SEARCH 'NICHOLSON TULE' FOR ALL IMAGES 

Abigail Beltran, 6, whose family's well has run dry, climbs on a water storage tank in her front yard in Porterville, California October 14, 2014. In one of the towns hardest hit by California's drought, the only way some residents can get water to flush the toilet is to drive to the fire station, hand-pump water into barrels and take it back home. The state's three-year drought comes into sharp focus in Tulare County, the dairy and citrus heart of the state's vast agricultural belt, where more than 500 wells have dried up. Picture taken October 14, 2014. REUTERS/Lucy Nicholson (UNITED STATES - Tags: ENVIRONMENT SOCIETY)

ATTENTION EDITORS - PICTURE 10 OF 12 FOR WIDER IMAGE STORY 'WHEN THE WELL RUNS DRY'
SEARCH 'NICHOLSON TULE' FOR ALL IMAGES 

Firefighters battle a blaze in San Marcos, California May 14, 2014. More than 20 structures, including several homes, burned to the ground and thousands of people were ordered to evacuate on Wednesday, as a wind-lashed wildfire roared out of control in the heart of a Southern California coastal community. The so-called Poinsettia Fire, which erupted shortly before 11 a.m. in Carlsbad, some 25 miles north of San Diego, quickly became the most pressing battle for crews fighting flames across the region amid soaring temperatures and hot Santa Ana winds. REUTERS/Sam Hodgson (UNITED STATES - Tags: ENVIRONMENT DISASTER TPX IMAGES OF THE DAY) 

The shadow of an Osprey aircraft carrying the White House press pool falls upon a farm field near Fresno, California February 14, 2014. President Barack Obama will pledge on Friday to speed federal assistance to help California recover from a crippling drought that is threatening the critical agriculture industry in the No. 1 farm state. REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS ENVIRONMENT AGRICULTURE TRANSPORT TPX IMAGES OF THE DAY) 

A sign advising to pray for rain hangs above an exhibit area at the 47th Annual World Ag Expo in Tulare, California, February 12, 2014. The expo takes place as a third year of drought plagues California farmers with the driest year on record and prompting California Governor Jerry Brown to declare a statewide drought emergency. Picture taken on February 12, 2014. REUTERS/David McNew (UNITED STATES - Tags: AGRICULTURE ENVIRONMENT) 

A visitor walks near the receding waters at Folsom Lake, which is 17 percent of its capacity, in Folsom, California January 22, 2014. California Governor Jerry Brown last week declared a drought emergency, and the dry year of 2013 has left fresh water reservoirs with a fraction of their normal water reserves. Picture taken January 22, 2014. REUTERS/Robert Galbraith (UNITED STATES - Tags: ENVIRONMENT TPX IMAGES OF THE DAY) 

General view of water levels near the Truckee River Dam in Tahoe City, CA May 9, 2015. Lake Tahoe water levels are low this year due to the state's drought. Picture taken May 9, 2015. REUTERS/James Glover II

A field of dead almond trees is seen in Coalinga in the Central Valley, California, United States May 6, 2015. Almonds, a major component of farming in California, use up some 10 percent of the state's water reserves according to some estimates. California ranks as the top farm state by annual value of agricultural products, most of which are produced in the Central Valley, the vast, fertile region stretching 450 miles (720 km) north-sound from Redding to Bakersfield. California water regulators on Tuesday adopted the state's first rules for mandatory cutbacks in urban water use as the region's catastrophic drought enters its fourth year. Urban users will be hardest hit, even though they account for only 20 percent of state water consumption, while the state's massive agricultural sector, which the Public Policy Institute of California says uses 80 percent of human-related consumption, has been exempted. REUTERS/Lucy Nicholson 

A worker walks through farm fields in Los Banos, California, United States, May 5, 2015. California water regulators on Tuesday adopted the state's first rules for mandatory cutbacks in urban water use as the region's catastrophic drought enters its fourth year. Urban users will be hardest hit, even though they account for only 20 percent of state water consumption, while the state's massive agricultural sector, which the Public Policy Institute of California says uses 80 percent of human-related consumption, has been exempted. REUTERS/Lucy Nicholson TPX IMAGES OF THE DAY