Fort Stevenson State Park is located on the North Eastern shore of Lake Sakakawea and is home to two marinas, Garrison Bay and de Trobriand Bay.
Garrison Bay, a deep-water marina on the west side of the park, has a floor elevation of 1790msl and is host to 61 electric dock slips ranging in size from 26 to 56 feet in length. There are also 4 jet ski docks. All slips are available on a seasonal basis, four of the slips are dedicated for transient use and any slips not rented for the season are also available for transient use on a monthly, weekly or daily basis. The marina supports a gas dock with premium gas only, sewage pump out services, rental boats, boat storage and canoe/kayak/SUP rental and storage services.
de Trobriand Bay is located on the east side of the park and has a functional elevation range from 1828msl to 1854msl. This location can accommodate 44 electric slip sizes ranging from 26 to 40 feet and 4 buoyed moorings. All slips are available on a seasonal basis and any slips not rented for the season are also available for transient use on a monthly, weekly or daily basis. The marina supports showers, canoe/kayak/SUP storage, boat storage, soda vending machines, and a fish cleaning station.
Lake Sakakawea State Park's marina has a functional elevation range from 1805msl to 1855msl and is protected by a concrete breakwater. Marina facilities are supported by Lakeshore convenience store, a gas dock, pump-out service, and boat and camper storage. A total of 74 slips ranging in size from 24-72 feet in length are available for seasonal rent along with 3 transient slips available for daily use. Dry storage is available for both summer and winter seasons.
Lewis & Clark State Park's marina ranges from 20ft to 50ft in length and protected by a rock breakwater. Two piers are available; Pier 1 slips are 20 feet to 28 feet and Pier 2 slips are 46 feet and 50 feet. The Marina offers fuel (unleaded) and a septic pump out service on the water. Navigable water levels are 1830MSL and above. Canoe and kayak rentals are offered during normal store hours during the summer season. Dry storage is available for both summer and winter seasons.