Switzerland. Canton Ticino. Verzasca valley. Vogorno lake. Empty reservoir of Verzasca dam. The reservoir is dried due to the first renovation works since dam’s construction (60 years ago). The Contra Dam, commonly known as the Verzasca Dam, is an arch dam on the Verzasca River. The dam creates the Vogorno lake, a water surface area of 1.68 km2. 23.01.22 © 2022 Didier Ruef