Geneva Lake, along with Lake Como, Lake Delavan & others, helps make up the Geneva Lakes area. They were created from the two great Michigan glaciers; 30,000 & 14,000 years ago. The 5,200-acre lake is situated at the southern end of the Kettle Moraine and is eight miles long, two miles wide and 144 feet deep which makes it the largest lake in the region. It is fed by natural aquifers from Lake Superior.

The lake has a rich history that dates to the days of Potawatomi Indian Chief Big Foot and his tribe of about 500 who lived near what is now Williams Bay in the 1830s. By the turn-of-the-century, all of the shoreline property on the lake had been developed into estates, private resort parks, or private camps, except for the public beaches and parks in the three communities of Fontana, Lake Geneva and Williams Bay.