Lago del Barbellino
Italy
Lago del Barbellino is the largest artificial lake in the Province of Bergamo, Lombardy, Italy. It is located in Valbondione among the Bergamasque Alps. The reservoir contains 18.5 million cubic metres of water. In 1931 a dam was built to supply hydroelectric power to the Seriana Valley where the textile industry was rapidly developing.
Reservoir data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).