Volturnalia

Volturnalia, the festival dedicated to Volturnus, 'god of the waters,' god of fountains; a tribal river god who later was identified as god of the Tiber river. The Volturnus River, in southern Italy, is named for him. Volturnus was the father of the goddess Juturna, who was first identified with a spring in Latium near the Numicus River and later with a pool near the temple of Vesta in the Forum of Rome. They were both honored on this day with feasting, wine-drinking and games by Romans.