The Rock Lake - Sandy Beach Launch boat ramp is located in Lake Mills, Wisconsin and provides access to Rock Lake. It is a concrete boat ramp that has a width of 28 feet and an asphalt parking area that can accommodate up to 40 vehicles and trailers.

Rock Lake is a 1363-acre lake that is known for its clear water and excellent fishing. It is a popular destination for boating, fishing, and water sports. The lake has a maximum depth of 60 feet and an average depth of 23 feet.

A variety of watercraft are permitted on Rock Lake, including motorized boats, canoes, kayaks, and paddleboards. However, there are certain regulations that must be followed, such as a 10 mph speed limit in certain areas and a requirement for a boating license for operators born on or after January 1, 1989.

The information regarding the Rock Lake - Sandy Beach Launch boat ramp was obtained from the Wisconsin Department of Natural Resources website and is accurate as of August 2021.