Geneva Lake

Geneva Lake is a body of freshwater in Walworth County in the southeastern portion of the U.S. state of Wisconsin. On its shores are the city of Lake Geneva, and the villages of Fontana-on-Geneva-Lake, and Williams Bay. The lake is known as the only place in the world where mail jumping is practiced, an unusual mail delivery system maintained as a local tradition. The lake covers an area of approximately 5,401 acres, with a maximum length of 7.7 miles, a mean depth of 61 feet, and a maximum depth of 135 feet. Geologists believe that it is a filled-in kettle formed from a receding glacier.