The Kulkwitzer See is a lake in the Saxon Lake District, which emerged from two former lignite mining areas southwest of Leipzig. From 1864 coal was mined here, first underground and from 1937 open pit.
First mentioned around 979.
In 1970 it was decided to devastate the towns of Eythra and Böstdorf (belonging to Eythra) with a view to continuing the Zwenkau opencast mine. Eythra was relocated until 1986 and then dredged.