Botnedalsvatn is a lake in the valley Botnedalen in the municipality Tokke in Telemark, Norway. The level of Botnedalsvatn is regulated with a dam, and water from the reservoir is delivered through a tunnel to the Byrte Hydroelectric Power Station located near the southern end of Byrtevatn.
Coordinates: 59°29′57″N 7°43′02″E / 59.49917°N 7.71722°E