This diagram shows the four diversion tunnels (on the outside), the coffer dams, Hoover Dam...

This diagram shows the four diversion tunnels (on the outside), the coffer dams, Hoover Dam itself, the location of the generators, and the water lines feeding the generators. Lake Mead is to the right, and the Colorado River flows out to the left.

Location
Hoover Dam
Photographer
Margaret Hovell
Date taken