Madison Arm Resort offers full-service marina access on Hebgen Lake's Madison Arm with boat launching, docking facilities, fuel (including no-ethanol 91 octane for boats), and rentals of pontoon boats, aluminum fishing boats, kayaks, canoes, and paddle boards.

The resort features 52 full hook-up RV sites, 22 tent sites, cabin and cottage rentals, a well-stocked general store, laundromat, and fish cleaning station, making it a comprehensive base for water recreation and camping near Yellowstone National Park (8.

5 miles away). Located on the south shore of Madison Arm in Gallatin National Forest, the facility is open May 15 through October 1.