Southwest Pass, Mississippi River is a river entrance leading from Head of Passes at the lower Mississippi River through the jettied lower delta to the Gulf of Mexico, the principal deep-draft outlet of the river. The tide is diurnal and small, with a mean range of 0.80 ft (0.24 m) at the Pilottown station at Head of Passes.
- Type
- River entrance
- Location
- Louisiana, United States
- Setting
- Leading from Head of Passes at the lower Mississippi River through the jettied lower delta to the Gulf of Mexico, the principal deep-draft outlet of the river
- Tidal range
- The tide is diurnal and small, with a mean range of 0.80 ft (0.24 m) at the Pilottown station at Head of Passes.
- Notable
- The Mississippi River Ship Channel deep-draft project from the Gulf to Baton Rouge was deepened to 50 ft, completed in stages by the US Army Corps of Engineers (USACE).
