Las Vegas Sun

May 6, 2016

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A view of Hoover Dam and Lake Mead on Wednesday, Dec. 18, 2013, near Boulder City shows canyon walls ringed with white mineral deposits indicating the drop in water levels.

Jim Wilson / The New York Times

A view of Hoover Dam and Lake Mead on Wednesday, Dec. 18, 2013, near Boulder City shows canyon walls ringed with white mineral deposits indicating the drop in water levels.