Delio Lake
Delio Lake is a lake in the Province of Varese, Lombardy, Italy. At an elevation of 930 m, its surface area is about. It is a natural lake, but its shape has been altered by its use for energy production. It serves as the upper reservoir for the pumped-storage Roncovalgrande [Hydroelectric Plant].
In 2020 a hiker died after being caught in fast flowing water that escaped the banks of Lake Delio.