4. Garrison Dam
Capacity: 18,500,000
Reservoir: Lake Sakakawea
State: North Dakota
The Garrison Dam cost some $300 million to make back in 1953. Apart from being one of the largest hydroelectric dams in USA, its position in the world isn’t so bad either. The Garrison Dam is the fifth largest earthen dam in the whole world.
Pixabay / Public Domain
