Water management

FILE - In this Feb. 9, 2017 file photo, water flows through a break in the wall of the Oroville Dam spillway in Oroville, Calif. One year after the closest thing to disaster at a major U.S. dam in a generation, federal dam regulators say they are looking hard at how they overlooked the built-in weaknesses of old dams like California's Oroville Dam for decades, and expect dam managers around the country to study their old dams and organizations equally hard. (AP Photo/Rich Pedroncelli, file)

A woman collects water in a settlement near Cape Town on Friday, Feb. 2, 2018. South Africa's drought-hit city of Cape Town introduced new water restrictions in an attempt to avoid what it calls "Day Zero," the day in mid-April when it might have to turn off most taps. (AP Photo/Bram Janssen)

FILE - In this Nov. 6, 2011 file photo, Chad Devereaux examines bricks that fell from three sides of his in-laws home in Sparks, Okla., after two earthquakes hit the area in less than 24 hours. According to a study released on Thursday, Feb. 1, 2018, pumping energy drilling wastewater deep and nearer fault lines is a leading cause in much of the thousands of man-made earthquakes that have hit Oklahoma in recent years. (AP Photo/Sue Ogrocki, File)

FILE - In this Nov. 30, 2017, file photo, work continues on the Oroville Dam spillway in Oroville, Calif. The city of Oroville plans to sue state water officials for damages caused when thousands of its residents had to be evacuated last year after the Oroville Dam spillways failed. Oroville City Attorney Scott Huber says the city will file the lawsuit Wednesday, Jan. 17, 2018. (AP Photo/Rich Pedroncelli, File)

FILE - In this Aug. 13, 2013, file photo, Rep. Steve Southerland, R-Fla. and Sen. Marco Rubio listen to Florida Gov. Rick Scott announce a lawsuit against the state of Georgia, while touring Apalachicola, Fla. Florida is hoping the Supreme Court will come to the rescue of this slice of northwestern Florida, which the state says has been devastated by greedy water users in Georgia. The high court hears argument Monday, Jan. 8, 2018, in the long-running water war between the neighboring states. (AP Photo/Phil Sears, File)

Frank Gehrke, chief of the California Cooperative Snow Surveys Program for the Department of Water Resources, looks over a nearly snow barren meadow while conducting the first snow survey of the season at the Phillips Station snow course, Wednesday, Jan. 3, 2018, near Echo Summit, Calif. The snow survey showed the snow pack at this location at 1.3 inches of depth with a water content of .4 inches. California's water managers are saying it's too early yet for fears that the state is sliding back into its historic five-year drought.(AP Photo/Rich Pedroncelli)

FILE - In this July, 7, 2004, file photo, a sign at the entrance to the Arrowhead Mountain Spring Water Company bottling plant, owned by Swiss conglomerate Nestle, on the Morongo Indian Reservation near Cabazon, Calif. Nestle, which sells Arrowhead bottled water, may have to stop taking millions of gallons of water from Southern California's San Bernardino National Forest because state regulators concluded it lacks valid permits. The State Water Resources Control Board notified the company on Wednesday, Dec. 20, 2017, that an investigation concluded it doesn't have proper rights to pipe about three-quarters of the water it currently withdraws for bottling. (AP Photo/Damian Dovarganes, File)

FILE - In this Nov. 30, 2017, file photo, work continues on the Oroville Dam spillway in Oroville, Calif. California water officials plan to update a Northern California community about their efforts to repair the nation's tallest dam after damage to its spillways forced nearly 200,000 people to evacuate last February. (AP Photo/Rich Pedroncelli, File)