Region
United States
54
Colorado
20
Mexican-American Border Region
11
Mexico
11
Arizona
7
Asia
5
California
5
Japan
5
Chile
3
Hawaii
3
New Mexico
3
Texas
3
Ascensión (Chihuahua)
2
California, Southern
2
Central America
2
Columbus
2
Gulf States
2
India
2
Larimer County
2
Washington (State)
2
Africa, Southern
1
Agua Prieta (Sonora)
1
Animas River Watershed (Colo. and N.M.)
1
Atlantic Coast (U.S.)
1
Atlantic Ocean
1
Balkan Peninsula
1
Bangladesh
1
Bihar
1
Boulder County
1
California, Northern
1
Cascadia Subduction Zone
1
Char Jabbar
1
Charleston
1
China
1
Ciudad Acuña
1
Clackamas County
1
Cochise County
1
Colorado Springs
1
Del Rio
1
Douglas
1
Europe
1
Florida
1
Gold King Mine (San Juan County, Colo.)
1
Gulf Coast (U.S.)
1
Gunnison County
1
Hood, Mount (Or.)
1
Imperial County
1
Imperial Valley (Calif. and Mexico)
1
Interstate 70
1
Kocaeli İli
1
more ...