Fast-Flowing (ôkus, rhoos)
OKYRHOE (Ocyrhoe) was a Naiad-nymph of Kolkhis (Colchis), at the eastern end of the Black Sea, loved by the sun-god Helios.
CLASSICAL LITERATURE QUOTES
R. E. Bell, Women of Classical Mythology (sourced from Pseudo-Plutarch On Rivers 5) :
"By Helios she was the mother of Phasis. Once after he was grown, Phasis surprised his mother with a lover and killed her. In despair he threw himself into the Arktouros River and drowned. Afterward the river was called the Phasis."
- Women of Classical Mythology - English Encyclopedia of Mythology C20th A.D.
Other references not currently quoted here: Pseudo-Plutarch On Rivers 5.