 The DLRG operates a lifeguard station on weekends and holidays.Auesee is also popular with divers, and in 2000, a yacht called "The" "Poiseidon" was sunk into the lake for divers to explore.The lake water is tested once a month during swimming season in accordance with the 2006 European Union Bathing Waters Directive, and may be closed down temporarily if harmful bacteria are found.