April 24, 2011
David Kadlubowski/The Arizona Republic, APThis Friday, July 31, 2009 picture shows Lake Mead from the Hoover Dam near Boulder City, Nev. Markings on the shoreline indicate the water level had dropped considerably. The Lake Mead reservoir reached a historic low level in November 2010 and water users in Arizona and Nevada braced for shortages within the year.