 Petenwell Lake, an impoundment of the Wisconsin River, covers the western border of the town.Lake Arrowhead, Lake Sherwood, and Camelot Lake are impoundments on Fourteenmile Creek, a tributary of the Wisconsin River, and are surrounded by census-designated places named after the lakes.According to the United States Census Bureau, the town has a total area of , of which is land and , or 13.13%, is water.