With a surface of about and a drainage basin of , Toke is a substantial body of water in Telemark. The approximately 115 mile (185 km)-long shoreline, a large part of which consists of an old lakebed with deposits of silt, is strongly exposed to erosion because of development for power production. With its long shoreline and innumerable larger and smaller islands and narrow bays, Toke is a popular destination for boaters and sportsfishermen. Trout, Arctic char, whitefish, and perch are all found in the lake.