Columbia Island Marina

Columbia Island Marina! services for both the owner looking for a year-round slip as well as for those looking for a great place to enter the Potomac for cruising by the monuments. located just west of the 14th Street Bridge in the Pentagon Lagoon, our amenities include: Nearly 400 slips, limited transient dockage Unleaded gas dock, pump-out station, Columbia Island CafU offers hamburgers, hot dogs, sandwiches, beer and ice. Picnic area and public restrooms.