Region
United States
11
Alaska
4
Florida
3
California
2
Everglades
2
Missouri
2
New York (State)
2
Appalachian Basin
1
Arkansas
1
Broward County
1
Broward County (Fla.)
1
Cache River National Wildlife Refuge (Ark.)
1
Cape Cod
1
Chesapeake Bay (Md. and Va.)
1
Chesapeake Bay Watershed
1
Delta Junction Region
1
DuPage County
1
Greene County
1
High Plains (U.S.)
1
High Plains Aquifer
1
Illinois
1
Kuskokwim Bay
1
Long Island
1
Long Island (N.Y.)
1
Maine
1
Massachusetts
1
Nevada
1
New Jersey
1
Oklahoma
1
Pennsylvania
1
Penobscot River
1
Russia (Federation)
1
Siberia
1
Tahoe, Lake, Watershed (Calif. and Nev.)
1
Tennessee
1
White River National Wildlife Refuge (Ark.)
1