Region
New Jersey
Delaware
6
Pennsylvania
6
Delaware River Valley (N.Y.-Del. and N.J.)
3
New Castle Co
3
Philadelphia (Pa.)
3
Philadelphia Metropolitan Area
3
Delaware River Estuary
2
Maryland
2
Penn
2
Philadelphia
2
Camden
1
Camden (N.J.)
1
Delaware River (N.Y.-Del. and N.J.)
1
Delaware River Watershed (N.Y.-Del. and N.J.)
1
Gloucester City
1
Gloucester City (N.J.)
1
Middle Atlantic States
1