FILE - This May 31, 2018 file photo shows the reduced water level of Lake Mead behind Hoover Dam in Arizona. Arizona is nearing a deadline to approve a plan to ensure a key reservoir in the West doesn't become unusable as a water source for farmers, cities, tribes and developers. Other Western states are watching. The U.S. Bureau of Reclamation expects full agreement on a drought contingency plan by Thursday, Jan. 31, 2019. (AP Photo/Ross D. Franklin, File)

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