Akhelóos

Akhelóos

or

Achelous

(äkhĕlô`ôs), river, 137 mi (221 km) long, rising in the Pindus Mts., NW Greece, and flowing generally south, traversing many mountain gorges, and emptying into the Ionian Sea opposite Keffallinía. It is a source of hydroelectric power. It formed a part of the boundary between ancient Aetolia and Acarnania and was formerly called Aspropotamos.