Region
Pennsylvania
12
New Jersey
11
Delaware River Valley (N.Y.-Del. and N.J.)
9
Philadelphia
9
Delaware River (N.Y.-Del. and N.J.)
5
Delaware
4
Philadelphia Metropolitan Area
4
Camden
3
New Castle Co
3
Penn
3
Philadelphia (Pa.)
3
Delaware River
2
Ohio
2
Athens (Pa.)
1
Athens Region
1
Atlantic Coast
1
Benjamin Franklin Bridge (Philadelphia, Pa.)
1
Camden (N.J.)
1
Camden Co
1
Camden Region
1
Connecticut River Valley
1
Delaware River Bridge (Philadelphia, Pa. and Camden, N.J.)
1
Delaware River Estuary
1
Delaware River Watershed (N.Y.-Del. and N.J.)
1
Gloucester City
1
Gloucester City (N.J.)
1
Holland Tunnel (Jersey City, N.J., and New York, N.Y.)
1
Hudson River (N.Y. and N.J.)
1
Maumee River Valley (Ind. and Ohio)
1
Miami River Region (Ohio)
1
Mississippi River Valley
1
Monongahela River
1
Monongahela River (W. Va. and Pa.)
1
New York
1
New York (State)
1
Philadelphia Metropolian Area
1
Philadelphia Region
1
Port Raritan District
1
Raritan River
1
Rhine River and Valley
1
Schuylkill River
1
Schuylkill River (Pa.)
1
Springfield (Mass.)
1
Susquehanna River Valley
1
Tioga River Region (Pa. and N.Y.)
1
United States
1
Virginia
1