It is located at an elevation of 926 m, its surface area is 0.056 km².

Its waters eventually join the Fecht (a local river) via a small tributary, the Wormsabachrunz, which empties into Lac de Fischboedle, which is nearby.

It is located near the foot of Hohneck and near the Kastelberg, in the Wormsa Valley.

The purpose of the dam was to regulate the flow of water to the textile mills and sawmills in the Munster valley, most of which were supplied with electricity independently.

The lake is surrounded by many hiking trails marked out by the Club Vosgien.