A flood which overran a-part of Greece while Ogyges was king of Attica. There were two floods so called- one in Boeotia, when the lake Copais overflowed its banks; and another in Attica, when the whole territory was laid waste for two hundred years (B.C. 1764).
Varro tells us that the planet Venus underwent a great change in the reign of Ogyges (3 syl.). It changed its diameter, its colour, its figure, and its course.
Ogyges Deluge occurred more than 200 years before Deucalion's Flood.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894