Isarus
Ἴσαρος
Isarus (Ἴσαρος: the Isar), a river of the Rhaetian Alps, flowing from an Alpine lake, and in a southern direction until it joins the Athesis near Pons Drusi. (Strab. iv. p.207, where the Ἴσαρος (or a) is said to receive the Atagis (Athesis); either a mistake of Strabo himself, or by a transcriber transposing the names. Comp. ILARUS.)
From William Smith (ed.), Dictionary of Greek and Roman Geography. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.