Las Vegas Sun

December 19, 2014

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

New York Times / Jim Wilson

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