Region
Amazon River
1
Amazon River Valley
1
Aral Sea (Uzbekistan and Kazakhstan)
1
Arctic regions
1
China
1
France
1
Istanbul (Turkey)
1
Jordan River
1
Jordan River Valley
1
Mekong River
1
Mekong River Valley
1
Mexico City (Mexico)
1
Mississippi River
1
Mississippi River Valley
1
New York (N.Y.)
1
Palm Springs (Calif.)
1
Shanghai (China)
1
Tijuana (Baja California, Mexico)
1
United States
1
Zimbabwe
1