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.
"Akhelóos." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (September 24, 2018). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/akheloos
"Akhelóos." The Columbia Encyclopedia, 6th ed.. . Retrieved September 24, 2018 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/akheloos