Lac de la Haute-Sûre, is a commune, in the canton of Wiltz in north-western Luxembourg. The commune is named after the Upper Sûre Lake, a reservoir on the upper Sauer river. The commune's administrative centre is Bavigne.
Lac de la Haute-Sûre was formed on 1 January 1979 from the former communes of Harlange and Mecher, both in Wiltz canton. The law creating Lac de la Haute-Sûre was passed on 23 December 1978.
Wikipedia https://en.wikipedia.org/wiki/Lac_de_la_Haute-Sûre
Coordinates 49°55'15.735" N 5°50'53.004" E