10 Largest Dams In The United States 

10. Fort Peck Dam (5.52 cubic miles)

9. Oahe Dam (6.98 cubic miles)

8. Garrison Dam (7.05 cubic miles)

7. Glen Canyon Dam (8.53 cubic miles)

6. Hoover Dam (8.95 cubic miles)

5. New Bullards Bar Dam (645 feet)

4. Glen Canyon Dam (710 feet)

3. Dworshak Dam (717 feet)

2. Hoover Dam (726 feet)

1. Oroville Dam (770 feet)