Lago di Gioveretto

Lake Gioveretto, called Zufrittsee in German, is an artificial reservoir at the head of the val Martello, at an altitude of 1,852 metres and close to the territory of the Stelvio National Park. It takes its name from the mountain that rises above it, the Gioveretto, 3,439 metres high.

The hydroelectric plant was designed in the early 1950s to harness the energy of the waters of the rio Plima, the rio di Lasa and some of their tributaries, and the various works were built between 1952 and 1956. The dam, the most significant of the works, was built between 1954 and 1956 by the firm Torno S.p.A. of Milan, and work could only be done in the summer months, because the winter weather conditions were prohibitive.

It is a lightened gravity concrete dam, of the type known as Marcello: at most 81.5 metres high and 380 metres long at the crest, made of 307,700 cubic metres of material to hold back 19,600,000 cubic metres of water. The catchment basin that feeds it measures 112.5 square kilometres. The power station is near Lasa, with a Pelton turbine fed by a penstock: 7 cubic metres per second of maximum flow, a head of 968 metres, 63 megawatts of power and 226 gigawatt hours a year.