Lake Kegonsa State Park is a state park of Wisconsin, United States, on the northeast shore of Lake Kegonsa. It is located in Dane County southeast of Madison, Wisconsin. The park consists of forest, prairie, and wetlands. Known for its campground, beach, and approximately 5 miles of hiking trails, the park offers swimming, fishing, water-skiing, sailing, and a boat landing. Lake Kegonsa itself covers 3,209 acres and is more than 30 feet deep.