Lake Sakakawea State Park Marina features 74 boat slips (24-72 feet) protected by a concrete breakwater, with a gas dock, pump-out service, and on-site convenience store.

The park also operates two boat ramps—a multi-lane ramp on the west side and a single-lane ramp on the southeast side—both with courtesy docks, designated parking, fish cleaning stations, and floating gas pumps for convenient water access.