Castle Rock Park Boat Ramp in Juneau County offers one of the largest public launches on Castle Rock Lake with 2 docks, 4 launch lanes, and 84 parking stalls, making it well-suited for both fishing and recreational boating.

Located 12 miles north of Mauston, the ramp is open year-round with day-use passes required ($5 per day or $25 yearly). Docks are typically removed in November and reinstalled in March for seasonal operation.