Columbia River Entrance is a river entrance between Cape Disappointment in Washington and Clatsop Spit at Fort Stevens in Oregon, leading from the Pacific Ocean into the Columbia River. The tide is mixed semidiurnal, with a mean range of 6.77 ft (2.06 m) at the Astoria, OR station.
- Type
- River entrance
- Location
- Oregon, United States
- Setting
- Between Cape Disappointment in Washington and Clatsop Spit at Fort Stevens in Oregon, leading from the Pacific Ocean into the Columbia River
- Tidal range
- The tide is mixed semidiurnal, with a mean range of 6.77 ft (2.06 m) at the Astoria, OR station.
- Notable
- Long known as the "Graveyard of the Pacific" for its hazardous bar; the US Coast Guard's National Motor Lifeboat School at Cape Disappointment is the service's only heavy-weather coxswain training facility (USCG).
