Ancient historians like Josephus the Jew, Berosus the Chaldean, Hieronymus the Egyptian, Mnaseas, and Nicolaus of Damascus (Josephus even mentions these last four) discussed a powerful flood that occurred in their past. Ancient Greek historians like Xenophanes, Herodotus, Eratosthenes, and Strabo all commented on fossils being from a significant water event in the past (not always to the extent of biblical proportions but they understood the point).
— Ken Ham