Dams and reservoirs
They are among the biggest, heaviest and most impressive structures in the Alps – the dams and reservoirs situated in the Valais mountains. The biggest of them can be admired during guided tours. Made by human hands, they serve as powerful testimony to the importance of hydraulic energy for a mountain canton’s economy. The Valais reservoirs will continue to play a significant role in the future – as Switzerland’s greatest source of renewable energy. A visit is sure to be an unforgettable experience.
Built between 1946 and 1951, Cleuson can hold 20 million cubic meters of water from the Printze and produce on average 70 million kw/h of power a year. It is a gravity dam standing 87m high and 420m wide at its widest point. Because of the breathtaking view and its turquoise waters, the Cleuson dam is an excellent place for an excursion. The trails are passable between 20 June and 30 September. Please check the weather and trail conditions before your hike, and be sure to use a map.
Capacity: 20 Mio. m3