Region
United States
95
Atlantic Coast (U.S.)
15
Colorado
12
Washington (State)
12
California
11
Chief Joseph Dam (Wash.)
10
Pacific Coast (U.S.)
9
Florida
8
Nevada
8
Chief Joseph Dam
7
Arizona
5
Wyoming
5
Alaska
4
Idaho
4
Indiana
4
Michigan
4
New Mexico
4
Ohio
4
Pacific Coast
4
Texas
4
Alabama
3
Georgia
3
Grand Valley (Colo. and Utah)
3
Mexico
3
Mexico, Gulf of
3
Oklahoma
3
Pennsylvania
3
Utah
3
Arkansas
2
Canada
2
Illinois
2
Maumee River Watershed (Ind. and Ohio)
2
Mesa County
2
Mid-Atlantic Bight
2
Middle Atlantic States
2
Minnesota
2
Missouri
2
Montana
2
New York (State)
2
Pacific Coast (North America)
2
South Atlantic Bight
2
Tennessee
2
West (U.S.)
2
Albany
1
Aleutian Islands
1
Allen County
1
American Falls (Idaho)
1
American Falls Dam (Idaho)
1
Aswan High Dam (Egypt)
1
Atlantic Ocean
1
more ...