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