Region
Penn
Pennsylvania
23
Philadelphia
18
Delaware River (N.Y.-Del. and N.J.)
8
Delaware River Valley (N.Y.-Del. and N.J.)
8
Schuylkill River (Pa.)
8
New Jersey
7
Delaware River Estuary
6
Delaware
4
Susquehanna River
4
New Castle Co
3
Philadelphia Metropolitan Area
3
Philadelphia Region
3
Schuylkill River
3
United States
3
York Co
3
Camden
2
Camden Co
2
Gloucester City
2
Lehigh River Valley
2
Ohio River Valley
2
Wilmington
2
York
2
Allegheny River (Pa. and N.Y.)
1
Atlantic Coast
1
Camden Region
1
Delaware River
1
Delaware River Watershed (N.Y.-Del. and N.J.)
1
Middle Smithfield
1
New York (State)
1
Pahaquarry
1
Philadelphia (Pa.)
1
Philadlephia
1
Susquehanna River Valley
1