The ground of the lake is based on clay and brown coal which is covered by a sediment layer of aquatic remains, detritus and sludge.
Around the lake there is a 142 hectares big forest, which covers the lake and the species in the area.
The water quality was evaluated by the Stiftung Warentest in 2008 as recommended. Unluckily the lake does not stand under rasmar protection. The international agreement was ratified by the German government in 1976 and currently (2016) there 34 areas which stand under Ramsar protection.