Region
Alaska
13
California
6
Colorado
4
Montana
4
Utah
4
Washington (State)
4
Nevada
3
Texas
3
United States
3
Alaska, Gulf of
2
Brooks Range
2
Idaho
2
Indiana
2
Nebraska
2
New Mexico
2
Oregon
2
Puerto Rico
2
Searles Lake
2
Yellowstone National Park
2
Alabama
1
Azores
1
British Columbia
1
Canada
1
Cascade Range
1
Charleston Region
1
China
1
Cook Inlet Watershed
1
Cowlitz River Watershed
1
Daviess County
1
Desecheo Island
1
Douglas County
1
Fort Belknap Indian Reservation
1
Garfield County
1
Grand Mesa
1
Great Basin
1
Gubik Formation (Alaska)
1
Hagerman Region
1
Iliamna Lake
1
Jackson Hole
1
Japan
1
Jefferson County
1
Jemez Mountains
1
Juneau
1
Kansas
1
Kenai Peninsula
1
Kentucky
1
La Sal Mountains
1
La Sal Mountains (Utah)
1
Leadville
1
Long Beach
1
more ...