An image of water flowing over one of the Hoover Dam spillways. Electric transmission towers in Black Canyon are visible in the background, and automobiles are parked in an observation area in the foreground. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
A grayscale image showing the downstream face of Hoover Dam and cars parked at a lookout point. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image showing a bird's eye view of the Hoover Dam's downstream face and Fortification Hill. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of Hoover Dam's downstream side. Fortification Hill is visible in the background. Note: Boulder Dam was officially renamed Hoover Dam in 1947.