Vogtlandsee, reservoir in Vogtlandkreis, Saxony, Germany

Vogtlandsee is an artificial reservoir in Vogtlandkreis covering about 6 hectares and surrounded by forest. The lake sits on moorland substrate, which creates acidic water that prevents fish from living here.

The lake was constructed between 1935 and 1937 to provide flood protection through a dam approximately 7 meters high. Today the structure also serves water management purposes for surrounding regions.

The name Vogtlandsee was chosen in 1937, replacing the older name Moorteich, after the region's Vogtland location. Because the moorland catchment makes the water too acidic for fish, the lake is used mainly for flood protection and as service water for farming and forestry. Its hidden position has long made it a nudist bathing lake.

The lake is open year-round and can be reached from a parking area at Waldpark Grünheide, from which a flat 1 kilometer (0.6 mile) path leads to the water. The trail is also accessible for people with mobility limitations and offers easy access with no admission fee.

The northern island is cut off from the bank by only a narrow channel of water. In the large sedge fen of the silted shore, especially on the west bank, the bog pools hold the Small Whiteface dragonfly (Leucorrhinia dubia), a species tied to acidic moorland water. Because the water is too acidic, no fish live in the lake, so waterfowl such as the little grebe nest undisturbed.