River of historic importance as it served as a way of communication between the coast and the hinterland, the ancient inhabitants of Sicily.
Starting from the meeting of the Amerillo and the Vizzini rivers, near the gorge of the Parathours and Palaunisi and just after, past the narrows of their gorges, it meets the lake in the territory of Licodia Eubea forming Lake Dirillo, an artificial basin created by the Ragoleti dam.
The reservoir capacity of over 20 million cubic meters, was fitted out as a sports area for tourists and includes, in addition to fishing, canoeing.
The lake is set in a magnificent landscape and its waters are inhabited by trout, pike, perch…
Called by the Romans Achates because of the presence of agate stone, it took the name Wadi Ikrilu (River of Acrille) in Arab times.