I don't think I'm alone in wondering, when was Noah's flood? Although we can't answer this with precision, it is worth noting that some of the Bible's descriptions of Noah's culture correspond nicely to between 4000 to 3000 B.C.
One of those clues that intrigues me personally is the ancient practice of wine-making. The biblical text describes Noah as a vineyard farmer and wine-maker (Gen. 9:20). Recently, another wine-making site was discovered, one which corresponds to this time period. It dates to about 4000 B.C. This is the oldest complete wine-making facility ever discovered. Basically, archaeologists can reconstruct the process from start to finish all in this one location.
Ironically, it's in Turkey, near the mountains of Ararat. (Sound familiar?)
What we can say is that the time and place are broadly consistent with the biblical description and as such offer interesting corroborating evidence.
Here is a link to a popular news piece about this discovery: "Chemical analysis confirms discovery of oldest wine-making equipment ever found"
Here is a link to the technical paper: Hans Barnard, et al., "Chemical evidence for wine production around 4000 BCE in the Late Chalcolithic Near Eastern highlands," Journal of Archaeological Science Volume 38, Issue 5, May 2011, Pages 977-984.