The Alpa-Gera-Talsperre is a dam in the Italian region of Lombardy on the Cormor River . It has a 178 m high gravity dam as a barrier structure. The dam is considered to be the first to be built using the RCC ( rolled concrete , roller compacted concrete ) method, whereby, in contrast to today's method, the concrete was approached with trucks and distributed with bulldozers, but not rolled. The reservoir has a storage capacity of 65 million cubic meters. Directly below is another reservoir, Lago Campomoro.
The Cormor is a tributary of the Adda , into which it flows over the Torrente Lanterna and the Torrente Mallero near Sondrio .
