Sufnersee
Canton of the Grisons, Switzerland
Sufnersee is a reservoir between Splügen and Sufers on the Hinterrhein river in the Grisons, Switzerland, surrounded by peaks of the Adula Alps. The Sufers dam was built in 1962. The reservoir has a volume of 17.5 million m³ and its surface area is 0.90 km².
Reservoir data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).