Windigo Lake is a freshwater lake located in north central Wisconsin in the Town of Bass Lake, Sawyer County, United States, in township 40 north, range 9 west. The lake is irregular in shape, with numerous peninsulas and bays, and is approximately one mile in diameter. Windigo Lake is 529.6 acres (2.143 km2) in size (including islands) with a maximum depth of 51 feet (16 m) and a shoreline of 9 miles (14 km). The lake does not have an obvious inflow or outflow stream and is classified as a seepage lake, i.e., a lake without an inlet or an outlet.