The Rock River - Legion Auxiliary Park Boat Ramp is a concrete boat ramp located in Horicon, Wisconsin. It is a single-lane ramp that is approximately 20 feet wide, making it suitable for smaller watercraft such as fishing boats, kayaks, and canoes. The ramp provides access to the Rock River, which flows through Horicon Marsh State Wildlife Area and eventually empties into the Mississippi River.

According to the Wisconsin Department of Natural Resources, the Rock River is open to a variety of watercraft, including motorboats, sailboats, and personal watercraft (PWCs). However, the department notes that PWC use is restricted in certain areas of the Rock River, and that boaters should always check for specific regulations and restrictions before launching.

In addition to the boat ramp, the Legion Auxiliary Park also features a picnic area, playground, and restrooms. The park is open year-round and is free to the public.

It should be noted that the information provided is accurate as of the time of writing, but boaters should always check for the latest regulations and conditions before launching their watercraft.