Spatial Coverage
- Ontario1
- Papua New Guinea1
- Pentwater (Mich.)1
- Pere Marquette Lake (Mich.)1
- Pere Marquette Lake.1
- Port Washington (Wis.)1
- Port Wing (Wis.)1
- Presque Isle Bay (Pa.)1
- Rhein-Main Region (Germany)1
- Rimouski (Québec)1
- Round Island (Mackinac County, Mich.)1
- Saginaw (Mich.)1
- Saginaw Bay.1
- Saginaw River (Mich.)1
- Saginaw River.1
- Saint Clair, Lake, Region (Mich. and Ont.)1
- Saugatuck (Mich.)1
- São Francisco River Valley (Brazil)1
- Sebastopol (Calif.)1
- Sebastopol.1
