Berzdorfer See, Artificial lake in Görlitz, Germany.

Berzdorfer See is a large lake in eastern Germany spanning across the municipalities of Görlitz, Markersdorf, and Schönau-Berzdorf. Its expansive surface and substantial depth create a diverse water environment suitable for multiple recreational activities.

The site was a coal mining area for generations before the pit closed at the end of the 20th century. Flooding between 2002 and 2013 transformed the abandoned mining landscape into a lake.

The lake takes its name from Berzdorf village, whose residents were relocated to make way for mining operations. Today visitors swim and relax along its shores while the surrounding landscape gradually returns to green.

Two main facilities serve water sports: the Tauchritz port and the Blaue Lagune sailing base located at different shorelines. The lake is easily accessible with adequate parking and water access points scattered along the shore.

The flooding began in 2002 with water from the Pließnitz; from 18 February 2004 water was diverted from the Neiße through a one-kilometre pipeline of two 1.6-metre pipes, at up to 10 cubic metres per second. In August 2010 a dam on the Witka broke after heavy rain and, as mayor Siegfried Deinege recalled, the lake filled at a stroke. The target level of 186 m above sea level was reported reached on 6 February 2013.