Location
Gigerwaldsee is a reservoir situated in the canton of Valais, Switzerland. It lies in the upper Valais region, near the village of Gigerwald in the municipality of Goms. The reservoir is part of the alpine valley of the Gigerwaldbach, a tributary of the Rhône River system.
Physical characteristics
- Surface area: Approximately 0.92 km² (0.36 sq mi).
- Volume: Around 37 million m³ (0.037 km³) of water storage capacity.
- Maximum depth: Roughly 60 m (197 ft).
- Elevation: The water surface sits at about 1,425 m (4,675 ft) above sea level.
- Catchment area: The reservoir drains a catchment of roughly 30 km² in the surrounding alpine terrain.
Dam and hydroelectric function
The reservoir is impounded by the Gigerwald Dam, a concrete gravity dam constructed in the mid‑1970s (completed in 1975). The dam forms part of the Gigerwald hydroelectric power scheme, which is operated by BKW Energie AG. Water released from the reservoir drives turbines at the Gigerwald power station, contributing to the regional electricity supply and supporting Switzerland’s renewable energy portfolio.
History and development
The creation of Gigerwaldsee was part of a broader series of hydroelectric projects in the Valais Alps undertaken during the 1960s and 1970s to meet growing energy demands. The dam’s construction involved typical alpine engineering challenges, such as rock stabilization and the management of seasonal meltwater.
Environmental and recreational aspects
The reservoir and its surrounding area are characterized by alpine flora and fauna, and the water body is subject to environmental monitoring to ensure compliance with Swiss water quality standards. While primarily a utilitarian structure, the lake also offers limited recreational opportunities, including fishing and hiking along designated trails that provide views of the reservoir and surrounding peaks.
Access
Gigerwaldsee is accessible via local road networks connecting the village of Gigerwald to the broader Valais road system. The nearest major settlement is the town of Brig, located approximately 35 km to the south. Public transport options are limited; most visitors reach the site by private vehicle.
References
Information compiled from publicly available Swiss hydroelectric project documentation, topographic maps of the Valais region, and the official communications of BKW Energie AG.
