The Rioni is the main river of western Georgia. Wikipedia

River in Western Georgia, known to the ancient Greeks as the Phasis. Wikipedia Disambiguation

River in western Georgia Wikidata

The main river of western Georgia, originating in the Caucasus Mountains, in the region of Racha, it flows west to the Black Sea and empties into it north of the port of Poti. The city of Kutaisi is on its banks. Known as Phasis to classical authors. Wiktionary

River. Wiktionary (translation)