Talsperre Lichtenberg, reservoir in Germany

Talsperre Lichtenberg is a large water storage facility built in the Erzgebirge region to supply the area and prevent flooding. The dam is constructed of stone and stretches 300 meters across the valley, standing about 43 meters above the ground with a bitumen-lined surface to prevent seepage.

Built between 1966 and 1975 near Frauenstein in the Erzgebirge, the dam impounds the Gimmlitz stream. Raw water can be transferred here from the Rauschenbach reservoir via the Freiberg mining water channel and passed on to Klingenberg. After almost 50 years of continuous operation, a refurbishment estimated at around 30 million euros began in January 2025, starting with a diversion of the Gimmlitz and a cofferdam.

The reservoir is fed by the Gimmlitz stream, and its water is also transferred from the Rauschenbach dam via the Freiberg mining water channel. Fishing is reserved for the Südsachsen angling association, while swimming and water sports are prohibited because the lake supplies drinking water.

The dam crest is open to walkers and displays old valves as exhibits; during the current refurbishment it is fully closed to visitors. Swimming and water sports are not allowed because the reservoir supplies drinking water, and fishing is reserved for the Südsachsen angling association. A circular trail runs around the reservoir.

The intake tower stands in the reservoir, not on the dam crest, and is reached by no walkway; it draws water and serves as the spillway. On the walkable crest itself, old valves taken out of service are displayed as exhibits. The reservoir is fed by the Gimmlitz and has a pre-dam at Dittersbach plus two pre-basins at Dittersbach and Burkersdorf.