The construction of Kremasta Dam was completed in 1965 concentrating waters from four rivers: Acheloos, Agrafiotis, Tavropos and Trikeriotis.

[2] In addition to supplying energy to the national grid during times of high demand, it avoids flooding of the Acheloos.

It was constructed in 1966 and is owned by the Public Power Corporation of Greece (DEH A.E.).

The water of the lake penetrates along the beds of the rivers mentioned above, and forms a lot of fjords and small islands.

The municipalities with shores on the lake are Agrinio and Amfilochia in Aetolia-Acarnania, and Agrafa and Karpenisi in Evrytania.