Enhanced TIFF Sidescan-Sonar Mosaic of Overton Arm - Lake Mead, Nevada:  Geographic Coordinates
Lake Mead is a large interstate reservoir located in the Mojave Desert of southeastern Nevada and northwestern Arizona.  It was impounded in 1935 by the construction of Hoover Dam and is one of a series of multi-purpose reservoirs on the Colorado River.  The lake extends 183 km from the mouth of the Grand Canyon to …