A few other things to consider. If all of the Earth's water were to melt, how high would the Water Table be? Apparently around 200-250 feet above our current level, far from covering the mountains.
Genesis 7:19-20
And the waters prevailed exceedingly upon the earth; and all the high hills, that were under the whole heaven, were covered.
Fifteen cubits upward did the waters prevail; and the mountains were covered.
Mt Everest; 29,029 ft above sea level. Almost 5 miles.
Another interesting point. When we moved to a Native American village to pastor several years ago, the Natives told stories that the White Man deemed as being ridiculous. Tales, passed down from previous generations.
We told them, "Throw that junk away so we can tell you about Noah and the Ark".
Hmmmmm.......