There presently exist several long dendrochronologies, each comprised of about 10,000 individual growth-rings. These are examined for the possibility of multiple ring growth per year in their earliest portions due to unusual climatic conditions following the Flood. It is found that the tree-ring/radiocarbon data are contrary to the suggestion of multiple ring growth. Since it seems that the Flood must have occurred before the oldest rings of these series grew, the implication is that the Flood must have occurred more than 10,000 years ago.