In the Genesis story of the Noah it is very clear where the water came from and it fits nicely with the first paragraphs of the story of creation. The mountains were not flattened in the bible as you proposed earlier. "Fifteen cubits upward did the waters prevail; and the mountains were covered" Yep, the mountains were still there and they were all covered.
Would you mind telling us where the Bible says the water came from? Then I will try to respond, since I believe it to be Truth.
