The lake was formed by the construction of a gravity dam on the Stura di Viù river, completed in 1924.
It is a significant point of passage on the path to the summit of Rocciamelone, the highest peak in the Susa Valley area.
The water levels are strictly managed for the purpose of hydroelectric power production by Enel.
During the winter, the access road from Usseglio is typically closed to public vehicular traffic due to avalanche risk.
The reservoir area is a designated part of the Natura 2000 network, recognized for its alpine biodiversity.
Lago di Malciaussia is an artificial reservoir situated at 1,805 meters above sea level in the Viù Valley of the Graian Alps. Created by a dam constructed in the 1920s to support hydroelectric power generation, it serves as a starting point for alpine trekking. The surrounding landscape is dominated by the peak of Rocciamelone, which reaches 3,538 meters. The lake area acts as a gateway to the Rifugio Tazzetti and the ascent toward the Colle della Croce. High-altitude pastures and glacial remains characterize the upper reaches of the valley.
The crest of the dam provides the most expansive panoramic view of the lake against the Rocciamelone massif.
Bring a windbreaker even in mid-summer, as temperatures drop rapidly at this altitude.
Check the local road conditions before departure, as the narrow mountain road is subject to seasonal restrictions.
Use sturdy, waterproof hiking boots to navigate the rocky terrain around the reservoir perimeter.
Attempting to drive up the mountain during late autumn or spring, as the road is often blocked by snow or ice.
The access road from Usseglio is strictly seasonal and often closed to traffic during the winter and early spring months.
Practice leave-no-trace principles; remain on marked trails to protect the fragile alpine meadow ecosystem.
