According to Gerald Schroeder MIT and Harvard libraries have hundreds of thousands of book. None of those books contradict the Bible. All of the books show us how accurate and true the Bible is.
Then without a doubt, you agree with the scriptures?
And if you agree with scriptures, then you must see that this was not a local flood but a world wide flood.
Undeniable verses that tell you, and imply, world wide:
Genesis 6:17 - And, behold, I, even I,
do bring a flood of waters upon the earth,
to destroy all flesh,
wherein is the breath of life,
from under heaven; and
every thing that is in the earth shall die.
Genesis 7
4 For yet seven days, and I will cause it
to rain upon the earth forty days and forty nights; and
every living substance that I have made will I destroy from off the face of the earth.
6 And Noah was six hundred years old when the
flood of waters was upon the earth.
8 Of clean beasts, and of beasts that are not clean, and of fowls, and
of every thing that creepeth upon the earth,
10 And it came to pass after seven days, that the waters of the
flood were upon the earth.
12 And the rain was upon
the earth forty days and forty nights.
14 They, and every beast after his kind,
and all the cattle after their kind, and every creeping thing that creepeth upon the earth after his kind, and every fowl after his kind, every bird of every sort.
15 And they went in unto Noah into the ark,
two and two of all flesh, wherein is the breath of life.
17 And the flood was forty days
upon the earth; and the waters increased, and bare up the ark, and it was lift
up above the earth.
18 And the waters prevailed, and were increased
greatly upon the earth; and the ark went upon the face of the waters.
19 And the waters prevailed
exceedingly upon the earth; and all the
high hills,
that were under the whole heaven, were covered.
20
Fifteen cubits upward did the waters prevail; and
the mountains were covered.
21
And all flesh died that moved upon the earth, both of fowl, and of cattle, and of beast, and of every creeping thing that creepeth upon the earth, and every man:
22
All in whose nostrils was the breath of life, of all that was in the dry land,
died.
23
And every living substance was destroyed which was upon the face of the ground, both man, and cattle, and the creeping things, and the fowl of the heaven; and they were destroyed from the earth: and Noah only remained alive, and they that were with him in the ark.
24 And the waters prevailed
upon the earth an hundred and fifty days.
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I really do not see how this can be confused with local.