South dam of Lago Bianco

The South dam of Lago Bianco is a concrete barrier at the southern end of the reservoir at 2,234 meters elevation. It channels water through a series of power stations located further downstream in the valley.

Engineers built this dam between 1910 and 1911 as part of a larger water control project. The construction merged two smaller lakes into what is now Lago Bianco.

This structure is recognized as a protected heritage site in Switzerland due to its role in shaping the region. It shows how communities harnessed water resources to power the valley's development.

The dam sits at a high elevation that hikers can reach through mountain trails, but there are no marked public paths crossing it directly. You can view the structure from vantage points near the lake shore.

Water behind this dam flows southward through several rivers until reaching the Mediterranean Sea, while a nearby lake just kilometers away drains northward in the opposite direction. This hidden divide separates two different sea basins within the same mountain range.

Location: Poschiavo

Location: Grisons

Part of: list of cultural properties in Poschiavo

GPS coordinates: 46.39258,10.03044

Latest update: December 14, 2025 17:00