Nisser
Nisser is a lake in Norway. It is the 13th-largest lake in the nation by area with a surface area of 76.30 km², the 10th largest by volume at 7.19 km³, and the 13th deepest at 234 m. It is located in Nissedal and Kviteseid municipality in Telemark county, and is Telemark’s largest lake. Part of the Arendal watershed, water enters from the discharge of Vråvatn, and its outlet is the Nisserelva river.