Region
United States
70
Arizona
6
New Mexico
5
Wyoming
5
Alaska
4
Oregon
4
Arkansas
3
Colorado
3
Idaho
3
Nevada
3
Texas
3
Utah
3
Alabama
2
California
2
Middle Atlantic States
2
Montana
2
North Dakota
2
Atlantic Ocean
1
Black Mesa (Navajo County and Apache County)
1
Canada
1
Caribbean Area
1
Cold regions
1
Copper River
1
Copper River (Alaska)
1
Cottonwood Lake (Stutsman County)
1
Cottonwood Lake (Stutsman County, N.D.)
1
Great Lakes (North America)
1
Houston
1
Illinois
1
Iran
1
Kansas
1
Louisiana
1
Mirror Lake (Grafton County)
1
Mirror Lake (Grafton County, N.H.)
1
New Hampshire
1
North Carolina
1
Pacific Islands (Trust Territory)
1
Pennsylvania
1
Potomac River
1
Potomac River Estuary
1
San Francisco Bay Area
1
South Dakota
1
Southern States
1
Washington (State)
1
West (U.S.)
1
White Sands Missile Range
1