Actually it's not "liberal" Christians who support the local flood interpretation, but some of the most respected conservative defenders of the Bible. Liberal Christians believe the flood is just a myth.
The liberal "Christians" I know are willing to support the local flood interpretation because of the "proof". There is ample evidence of a local flood, so it is nothing that needs faith. I have never seen a conservative believer defend a local flood. Could you point me in the right direction?
Thanks.