The swimming lake is a reclaimed limestone quarry that was filled with groundwater after excavation ceased.
The park contains a 10-acre designated nature area to preserve native Wisconsin flora and fauna.
Waukesha County Parks maintains a specific 'carry-in, carry-out' waste policy throughout the grounds.
The quarry lake reaches significant depths, requiring buoy-marked boundaries for swimmer safety.
Fox Brook Park is a 211-acre Waukesha County park centered around a former limestone quarry that now functions as a deep-water swimming lake. The site features a man-made sand beach maintained for public swimming during the summer season. A paved, multi-use trail encircles the quarry, providing accessible views of the water and the surrounding woodlands. The terrain includes a mix of prairie, hardwood forests, and marshlands. The park is managed as a fee-based area with seasonal entry requirements. Anglers use the water for fishing, though swimming is strictly restricted to the designated beach area.
The elevated overlook point along the northern section of the trail provides a wide-angle view of the quarry water.
Bring polarized sunglasses to better view the clear water of the quarry lake.
Check the county park website for the latest water quality or bacteria alerts before heading out for a swim.
Arrive early on weekends to secure a parking spot, as the beach lot reaches capacity quickly.
Do not attempt to swim outside of the designated beach area or across the quarry, as the steep underwater drop-offs are hazardous.
The beach is only supervised by lifeguards during the summer season; swimming is prohibited outside of these dates.
Pets must be leashed at all times and are not permitted on the swimming beach.
