Étang de Soulcem

Dam in Ariège, France

42°40′05″N 01°26′48″E / 42.66806°N 1.44667°E / 42.66806; 1.44667Construction began1980Opening date1983Operator(s)Électricité de FranceDam and spillwaysImpoundsRousseau de MounicouHeight66.50 m (218.2 ft)Length275 m (902 ft)Width (base)15 m (49 ft)ReservoirCreatesÉtang de SoulcemTotal capacity29,300,000 m³ (1.03×10⁹ cu ft)Catchment area44.3 km² (17.1 sq mi)Surface area0.91 km² (0.35 sq mi)Power StationHydraulic head409 m (1,342 ft) (via chutes to the Soulcem hydro plant)Annual generation62 GWh/yearAverage flow 7 m³/s
Peak flow 85 m³/s
Evacuation flow134 m³/s

Étang de Soulcem is a large artificial lake in the Pyrenees mountains in Ariège, France. It is at an elevation of 1570 m and is used for hydroelectricity, generating 62 GWh/year. The lake, which has a surface area of 0.91 km², was formed following the construction by Électricité de France of a dam across the northern end of the Vicdessos valley in 1980–1983.

The lake contains various fish including brown trout (S. trutta), Arctic char (S. alpinus), brook trout (S. fontinalis), and common minnow (P. phoxinus).