Region
United States
2,258
Colorado
261
California
112
Nevada
55
Utah
55
Alaska
51
Hawaii
51
Texas
48
Florida
46
Mississippi River
44
Atlantic Coast (U.S.)
42
Washington (State)
38
Arizona
37
West (U.S.)
32
New Mexico
30
New York (State)
30
Idaho
28
Wyoming
27
Oregon
26
Northeastern States
24
Ohio
24
Louisiana
23
Pacific Coast (U.S.)
23
Montana
21
Nevada National Security Site (Nev.)
21
India
18
Michigan
18
Tennessee
17
Illinois
15
New York
15
Denver
14
Massachusetts
14
Kansas
13
Missouri
13
Pennsylvania
13
Wisconsin
13
Pacific Coast
12
Bering Sea
11
Maryland
11
Mexico, Gulf of
11
North America
11
North Carolina
11
Puerto Rico
11
Chief Joseph Dam (Wash.)
10
Los Angeles
10
Maine
10
Nebraska
10
South Carolina
10
Alabama
9
Beaufort Sea
9
more ...