Lake DuBay

Lake DuBay is a reservoir on the Wisconsin River in Marathon and Portage Counties in the U.S. state of Wisconsin. The lake covers an area of 6700 acre and has a maximum depth of 30 ft. A dam on the lake is used to generate hydroelectric power. The community of Knowlton is located on the shore of the lake, as are 122 homes and three parks. Interstate 39 and U.S. Route 51 provide access to the lake, as do several county highways. While the lake is frozen in winter, it is used for ice racing by the "Winter Thunder Club".