Las Vegas Sun - Photograph : Lake Mead

January 18, 2018

Currently: 50° — Complete forecast

In this July 24, 2014, photo, dropping water levels reveal larger islands in Lake Mead compared to a picture on an interpretive sign on a hill overlooking the lake in Lake Mead National Recreation Area.

John Locher / AP

In this July 24, 2014, photo, dropping water levels reveal larger islands in Lake Mead compared to a picture on an interpretive sign on a hill overlooking the lake in Lake Mead National Recreation Area.