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Hoover Dam on the Colorado River, Lake Mead, Southwest Desert, Arizona and Nevada Border Royalty Free Stock Photo

Hoover Dam on Colorado River on the Nevada Arizona Border, Southwest Desert Royalty Free Stock Photo

White Bathtub Rings on Canyon Rocks Showing Drought Conditions, Lake Mead, Arizona Nevada Border at Hoover Dam, USA Royalty Free Stock Photo

Low Water Levels at Hoover Dam at the Western End of Lake Mead during Drought, Arizona, Desert Southwest, USA Royalty Free Stock Photo

Hoover Dam in Desert Landscape with Low Water Levels and Bathtub Rings, Nevada Arizona Border, USA Royalty Free Stock Photo

Hoover Dam in Nevada Royalty Free Stock Photo

Hoover Dam on the Colorado River, Lake Mead, Southwest Desert, Arizona and Nevada Border

Hoover Dam Water Intake Towers during Drought Conditions at Western End of Lake Mead from Arizona side of the border, USA Royalty Free Stock Photo

Hoover Dam A Majestic Engineering Marvel on the Colorado River a National Landmark in the American Southwest Royalty Free Stock Photo

Hoover Dam in Black Canyon of the Colorado River, Nevada, USA Royalty Free Stock Photo

Aerial View of Hoover Dam, Canyon Road, and Lake Mead in the American Southwest Royalty Free Stock Photo

Side view of Hoover Dam on the Nevada and Arizona State border Royalty Free Stock Photo

Lake Mead at sunset, looking toward the Arizona side Royalty Free Stock Photo

The water intake towers are jutting into the canyon end of Lake Mead where the imposing structure of Hoover Dam blocks the flow of the Colorado River with Mike O`CallaghanÃ¢â¬âPat Tillman Memorial Bridge, Arizona, USA.