Region
North America
Southwest, New
United States
5
Colorado River
4
Colorado River (Colo.-Mexico)
4
New Southwest
3
Spain
3
America
2
Colorado (Col.-Mexique : Fleuve)
2
Colorado River Valley
2
États-Unis (Nouveau Sud-Ouest)
2
Arizona
1
California
1
Colorado River Valley (Colo.-Mexico)
1
États-Unis (Ouest)
1
Florida
1
Latin America
1
Mexico
1
New Mexico
1
Southwest, Old
1
West (U.S.)
1
West United States
1