There is much evidence to support the perspective of a global flood from many different perspectives: Biblical, geographic, genetic, geological, archaeological and biological. I have only heard of a few weak counter-arguments from one or perhaps two perspectives and these counter-arguments had little beyond opinion to support their position. As a result, I will focus on the six major Biblical and Scientific perspectives. God gave us free will so you are free to research the counter-arguments on your own should you still not be convinced the Global flood perspective is overwhelmingly persuasive.
In Genesis 7, the Bible indicates that the flood was Global. For example,
“For forty days the flood kept coming on the earth, and as the waters increased they lifted the ark high above the earth. The waters rose and increased greatly on the earth, and the ark floated on the surface of the water. They rose greatly on the earth, and all the high mountains under the entire heavens were covered. The waters rose and covered the mountains to a depth of more than fifteen cubits.,”
Genesis 7:17-20 NIV
NOTE: 15 cubits is around 25 feet, so the highest mountain on earth at the time was covered by at least 25 feet of water. It goes without saying that everything else on earth would also be covered by water. If all of earth was covered by water, the flood had to be Global. The only remaining living things on the face of the earth were on the Ark. This is supported by the Bible in Genesis 7:23:
“Every living thing on the face of the earth was wiped out; people and animals and the creatures that move along the ground and the birds were wiped from the earth. Only Noah was left, and those with him in the ark.”
Genesis 7:23 NIV
And Jesus himself indicates the flood was Global when he said,
“People were eating, drinking, marrying and being given in marriage up to the day Noah entered the ark. Then the flood came and destroyed them all.”
Luke 17:27 NIV
Furthermore, one of Jesus’ closest Apostles, Peter supports the Global flood perspective as found in 2 Peter 3:4-6,
“… Ever since our ancestors died, everything goes on as it has since the beginning of creation.” But they deliberately forget that long ago by God’s word the heavens came into being and the earth was formed out of water and by water. By these waters also the world of that time was deluged and destroyed.”
2 Peter 3:4-6 NIV
So, the Bible is very clear that the flood was Global. In addition, this perspective is further supported by current scientific evidence.
Google Maps supports the geographic perspective that the flood was Global at the following link,
Genetic support includes population growth studies that match what would be expected if Noah’s flood was Global can be found at:
Geological and Archaeological perspective:
Geological and archaeological evidence of marine sediment and sea fossils found on the summit of Mount Everest indicate that at some point in time the mountain was completely under water. More detail on this is found at:
More geological and archaeological evidence is found by the discovery of Whale fossils found high in the Andes mountains at the following link:
And finally, biological evidence of a Global flood is explained at the following link:
Based on a combination of the above set of six different perspectives, there is more than enough evidence for one to reasonably conclude that Noah’s flood was Global rather than local.