Seeweiher
Hesse, Germany
The Seeweiher is a reservoir north of the village of Waldernbach in the municipality of Mengerskirchen (county of Limburg-Weilburg) in the Westerwald in the German state of Hesse. It impounds the Vöhlerbach, a tributary of the Kallenbach which, in turn, flows into the River Lahn. It has a surface area of 13 hectares. The Seeweiher was impounded in 1452 and is thus one of the oldest reservoirs in Hesse.
Reservoir data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).