Portland Harbor is a harbor at the mouth of the Fore River on the southern Maine coast, sheltered by Cape Elizabeth, Peaks Island and the Casco Bay island chain. The tide is semidiurnal, with a mean range of 9.12 ft (2.78 m) at the Portland station.
- Type
- Harbor
- Location
- Maine, United States
- Setting
- At the mouth of the Fore River on the southern Maine coast, sheltered by Cape Elizabeth, Peaks Island and the Casco Bay island chain
- Tidal range
- The tide is semidiurnal, with a mean range of 9.12 ft (2.78 m) at the Portland station.
- Notable
- Portland Head Light at Fort Williams Park (1791) is the oldest lighthouse in Maine, commissioned under the administration of George Washington (US Coast Guard / National Register of Historic Places).
