Region
United States
637
Colorado
172
Mexico
28
Colombia
10
Dominican Republic
9
North America
8
Chile
7
Honduras
6
Mexican-American Border Region
6
Nicaragua
5
Panama
5
Peru
5
Puerto Rico
5
Spain
5
Argentina
4
Guatemala
4
Uruguay
4
Bolivia
3
Ecuador
3
El Salvador
3
Cuba
2
Foreign countries
2
Alaska
1
Andes Region
1
Bexar County
1
California, Gulf of
1
Canada
1
Colorado River (Colo.-Mexico)
1
Costa Rica
1
Denver
1
Denver Metropolitan Area
1
Developing countries
1
Equatorial Guinea
1
Globeville (Denver, Colo.)
1
Gulf Coast (U.S.)
1
Hawaii
1
Japan
1
Pacific Area
1
Rio Grande (Colo.-Mexico and Tex.)
1
Río de la Plata Region (Argentina and Uruguay)
1
South America
1
Sun
1
Tallgrass Prairie National Preserve (Kan.)
1
Tegucigalpa (Francisco Morazán)
1
Texas
1
Tijuana River (Mexico and Calif.)
1
United States Virgin Islands
1
Western Hemisphere
1