Kutaisi - Rioni river

The Rioni River is the longest river entirely within the borders of Georgia, with a length of 327 kilometers (203 miles). It originates in the Caucasus Mountains, in the region of Racha, and flows west to the Black Sea, entering it north of the city of Poti (near ancient Phasis). The city of Kutaisi, which was once the ancient city of Colchis, is located on its banks. The Rioni River drains the whole western Transcaucasus into the Black Sea, while the river Kura drains the eastern Transcaucasus into the Caspian Sea.