Region
Colorado
160
United States
20
West (U.S.)
18
California
12
Colorado River Watershed (Colo.-Mexico)
11
South Platte River Watershed (Colo. and Neb.)
10
Georgia
9
Nevada
7
White River Watershed (Colo. and Utah)
7
Louisiana
6
New Mexico
6
Dolores River (Colo. and Utah)
5
Floridan Aquifer
5
Hawaii
5
New Jersey
5
Rio Grande Watershed (Colo.-Mexico and Tex.)
5
San Juan River Watershed (Colo.-Utah)
5
South Platte River Valley (Colo. and Neb.)
5
Yampa River Watershed
5
Afghanistan
4
Florida
4
Gunnison River Watershed
4
Maryland
4
Montana
4
Rio Grande (Colo.-Mexico and Tex.)
4
Utah
4
Wisconsin
4
Alabama
3
Arizona
3
Arkansas River Watershed
3
Connecticut
3
Gunnison River Watershed (Colo.)
3
North Platte River Watershed
3
Ogallala Aquifer
3
Pennsylvania
3
Puerto Rico
3
Tennessee
3
White River (Colo. and Utah)
3
Alamogordo
2
Arkansas
2
Atlanta
2
Denver
2
Denver Basin
2
El Paso County
2
Everglades National Park
2
Flint River Watershed
2
Glynn County
2
Grand County
2
Great Lakes Region (North America)
2
Green River Watershed (Wyo.-Utah)
2
more ...