Place
- North Carolina10
- Ohio10
- Pennsylvania10
- South Dakota10
- Utah10
- Washington (D.C.)10
- West Virginia10
- Wyoming10
- Northeastern States9
- Noyo River (Calif.)9
- Noyo River Watershed (Calif.)9
- Maine, Gulf of7
- Monterey County (Calif.)7
- Long Island Sound (N.Y. and Conn.)6
- Pacific Ocean6
- United States. Virgin Islands6
- Chesapeake Bay (Md. and Va.)5
- Fundy, Bay of5
- Albemarle Sound (N.C.)4
- Atlantic Ocean4