The arch dam Luzzone was completed in 1963. In the years 1997–1998, its height was increased by 17 m.
Lago di Luzzone is a lake in Ticino, Switzerland. The reservoir has a volume of 108 million m³ and a surface area of 1.27 km². It is located in the upper Blenio valley, on the territory of the municipalities of Ghirone and Aquila.
The lake lies at a height of 1,606 metres above sea level and is surrounded by peaks over 3,000 metres. The highest is Piz Terri (3,149 m), on the north-east side of the lake, seconded by the Plattenberg (3,041 m), on the east side. The Torrone di Nav (2,832 m) overlooks the lake from the south side while Pizzo Pianca (2,377 m) overlooks the lake from the north side.