Region
United States
57
États-Unis
26
Atlantic Coast (Middle Atlantic States)
2
Gulf of Mexico
2
Hudson River (N.Y. and N.J.)
2
Long Island Sound (N.Y. and Conn.)
2
Mexico, Gulf of
2
Mexique, Golfe du
2
New York (State)
2
Wisconsin
2
Adirondack Mountains Region
1
Adirondack Mountains Region (N.Y.)
1
Aspect de l'environnement
1
Atlantic Ocean
1
Austin
1
Austin (Tex.)
1
CHESAPEAKE BAY (US)
1
California
1
Chesapeake Bay
1
Chesapeake Bay (Md. and Va.)
1
Chesapeake, Baie de (Mar. et Virg.)
1
Cold Spring Harbor (NY)
1
Delaware
1
États du Sud-Atlantique (États-Unis)
1
George, Lake, New York (State)
1
Golfe du Mexique
1
Great Lakes Watershed
1
Great Lakes Watershed (North America)
1
Green Bay
1
Houston (Tex.)
1
Lincoln County
1
Mexicogulfen
1
Middle East
1
Mississippi
1
Montreal
1
Natural resources: Water Quality Criteria United States
1
Northeastern States
1
Pacific Coast (U.S.)
1
Pacific Ocean
1
Persian Gulf Region
1
Persique, Région du golfe
1
San Joaquin Valley
1
South Atlantic States
1
Southern States
1
Texas
1