Region
Boise River
2
Idaho
2
Tennessee
2
Washington (State)
2
Boise River (Idaho)
1
Chattahoochee River
1
Chattahoochee River Watershed
1
Everglades
1
Florida
1
Fort Union Coal Region
1
Georgia
1
Kentucky
1
Kentucky River Watershed
1
Minnesota
1
Mississippi River Watershed
1
Montana
1
Ohio
1
Saint Helens, Mount (Wash.)
1
Texas
1
United States
1
Wisconsin
1