Talsperre Kauscha, Flood retention basin in Kauscha, Dresden, Germany

Talsperre Kauscha is a flood-control dam in Kauscha, Dresden, built in two phases between 1977–1979 and 1983–1985 and officially commissioned in 1985. Its homogeneous embankment is made of loess loam. The reservoir holds 0.245 million m³, of which 0.14 million m³ is reserved for flood retention. The 228-metre Gebergrundbrücke carrying the A17 Dresden–Prague motorway crosses the lake.

The dam was built in two phases, 1977–1979 and 1983–1985, at Kauscha near Dresden for flood protection and service-water supply, and was officially commissioned in 1985. It is maintained by the Gottleuba barrage and river authority based in Bad Gottleuba. In 2011 the dam received an outflow gauge, an electrical connection and remote data transmission for early warning, at a cost of 120,000 euros.

The reservoir takes its name from the Kauscha district where it lies. Its stored water is used mainly for irrigation of the surrounding strawberry fields; swimming in the lake was possible until the summer 2002 flood, but silting and low water levels have ruled it out since. The 228-metre Gebergrundbrücke of the A17 Dresden–Prague motorway crosses the lake.

The reservoir lies in the Kauscha district south of Dresden, and the A17 Dresden–Prague motorway crosses the lake on the 228-metre Gebergrund bridge. The dam is maintained by the Gottleuba barrage and river authority, based in Bad Gottleuba. Swimming has not been possible since the 2002 flood because of silting and low water levels.

The reservoir was used for swimming until the summer 2002 flood; silting and low water levels have made bathing impossible since. Its main use today is irrigation water for the surrounding strawberry fields. The 228-metre Gebergrund bridge of the A17 Dresden–Prague motorway crosses the lake.