Butterfield Lake Boat Ramp is accessed through Riley Ranch County Park, located 6 miles north of North Bend off Highway 101, adjacent to the Oregon Dunes National Recreation Area.

The ramp is a primitive gravel launch suitable for non-motorized watercraft and small cartop boats, with boats restricted to electric trolling motors only.

Riley Ranch Park offers camping facilities, restrooms, picnic areas, and a fishing pier or dock for day-use visitors.