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Madison Arm Resort is a full-service boat launch and marina facility located on the Madison Arm of Hebgen Lake, approximately 3 miles north of West Yellowstone on US Highway 191, then 5 miles west on Forest Service Road 291. The resort sits on the south shore of this scenic alpine lake within the Gallatin National Forest and offers excellent access for kayakers, canoeists, and motorboaters. The launch facilities include boat ramps, marina docking, fuel services, and boat rental options including kayaks and paddleboards for those without their own equipment.
The resort is a comprehensive recreation hub with amenities including 52 full hook-up RV sites, 22 tent sites, cabin and cottage rentals, a general store stocked with tackle, bait, and fishing licenses, and a snack bar. Boaters will find trailer parking, boat slips available for additional fees, and complete marina services. The location offers convenient access to paddling on Hebgen Lake and proximity to the Henry's Lake Wilderness Study Area, with nearby Forest Service campgrounds (Rainbow Point and Lonesomehurst) providing additional camping options within 10 miles. The resort is only 8.5 miles from the west entrance to Yellowstone National Park, making it an ideal base for exploring the region's waterways.