Acheloüs, the longest of all Greek rivers, rising in central *Epirus and debouching, after a course of 240 km. (150 mi.; mostly through mountainous gorges), into the NW corner of the Corinthian Gulf. Its lower reaches were affected by heavy alluviation (Hdt. 2. 10. 3; Thuc. 2. 102. 3) and constituted the frequently disputed frontier between *Acarnania and *Aetolia. Recent geological studies based on coring in the river's delta continue to refine our understanding of this process as it relates to historical periods. Acheloüs was personified early as a water- and *river-god (the son of *Oceanus and *Tethys), from whom all seas, rivers, and springs derived (Hom. Il. 21. 194–7; Hes. Theog. 337–40). For his mythology and widespread depiction in art, see H. P. Isler, LIMC 1/1 (1981) 12–36.Less
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