Rock Lake, adjacent to the park, is well-known in archaeological circles for containing underwater effigy mounds and prehistoric stone structures.
The beach area is situated on a glacial lake, which was formed by the retreat of the Green Bay Lobe of the Laurentide Ice Sheet approximately 12,000 years ago.
The park provides one of the primary points for public watercraft access to Rock Lake's 1,365 acres of surface area.
Sandy Beach is a municipal park located on the eastern shore of Rock Lake in Lake Mills, Wisconsin. The site provides public access to the lakefront, featuring a sandy swimming area and a dedicated boat launch. Amenities include a playground, picnic areas with grills, and sand volleyball courts. A paved path traverses the park grounds, offering views of Rock Lake. The park serves as a community gathering space for seasonal recreation and water activities. It is managed by the City of Lake Mills Parks and Recreation Department.
The end of the public pier looking back toward the shoreline during sunset.
Bring water shoes if you plan on wading, as the lake bottom can be rocky in some sections.
Arrive early on summer weekends as the small parking area fills quickly.
Use the provided fish cleaning station if you are planning to fish from the pier or a boat.
Attempting to launch motorized watercraft during peak holiday weekends without an early arrival strategy.
Swimming area is only monitored by lifeguards during the peak summer season; park grounds remain open year-round.
No pets allowed on the beach; carry-in/carry-out trash policy applies; glass containers are prohibited on the beach.
