Region
United States
26
Colorado
8
North America
7
Alaska
5
Canada
5
Hawaii
5
Idaho
5
California
4
China
4
Europe
4
Wyoming
4
Africa
3
Bridger National Forest
3
Bridger National Forest (Wyo.)
3
Oregon
3
Teton National Forest
3
Teton National Forest (Wyo.)
3
West (U.S.)
3
America
2
American Samoa
2
Arizona
2
Atlantic Ocean
2
Boise National Forest
2
Boise National Forest (Idaho)
2
Central America
2
Guam
2
Ireland
2
Klamath National Forest (Calif. and Or.)
2
Latin America
2
Mexico
2
Mexico, Gulf of
2
New Mexico
2
North Atlantic Ocean
2
North Pacific Ocean
2
Oklahoma
2
Pacific Ocean
2
Rome
2
Tahoe, Lake, Watershed (Calif. and Nev.)
2
Alaska, Gulf of
1
Antarctica
1
Appalachian Region
1
Arbuckle-Simpson Aquifer
1
Arbuckle-Simpson Aquifer (Okla.)
1
Arctic regions
1
Atlantic Coast (U.S.)
1
Barbados
1
Bering Sea
1
Big Lake Watershed (Matanuska-Susitna Borough)
1
Big Lake Watershed (Matanuska-Susitna Borough, Alaska)
1
Blue Glacier (Wash.)
1
more ...