Sportsmen's Centennial Park Boat Ramp, located 5 miles east and 3 miles south of Garrison, offers multiple poured concrete boat ramps (main ramp and low-water ramps) for accessing Lake Sakakawea.

The county-owned park features 97 campsites with electric hookups available, a fish cleaning station, convenience store, playground, and swimming beach, making it a full-service recreation destination for boaters and anglers.