^ Most flood geologists take the flood date to be about 2500 BC via the Biblical genealogies. Of thetop of my head, everyone agrees that Moses was 1450 BC +-100y and Abraham 1950 BC +-150y and the genealogies connect Noah to Abraham via about 5 or 6 generations. So it's very easy to dat the flood scriptually.
From my readings the well established consensus oldest civilisations on this planet are peoples more like the Sumerians and they archeaologically date to about the time of the flood. The other stuff like the Chinese etc is less certain.
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