So, assuming this may happen again, and it's not going to get any deeper, what would be my best option for a new floor? We were thinking vinyl, since it's cheap enough, if I do it myself, that if it were to get ruined I'll just do it again.
Another thought was carpet tiles. I could just lift and dry out the wet ones should we get another 70-year flooding. But these can be expensive.
Then we noticed DRIcore tiles, http://www.dricore.com and wondered if this could be a solution. It's got a dimpled plastic-like membrane under OSB. The only concern I have with this is if water did make its way in, how would it get out? Could seepage eventually seep back down once the ground drains?
Any other ideas?