I actually don't care about Noah's Ark. It doesn't affect Grace in any fashion.
I don't own a copy of it, so I can't vouch for it's quality, but it looks nicely done.
I do not agree with the idea of using the Bible as in inerrant and exact guide to history, and then fitting everything else into the framework it establishes. But obviously many people on this thread do. So, I present this for your perusal and evaluation, out of a sense of Freeper friendliness.
As you see, what you get here is history beginning in 4,004 BC. As much as you torture the evidence, you really can't make secular history fit into that timeline. (But, obviously the artist who made this chart disagrees, and did it, sorta.)
Enjoy!