1996 civic coupe

I cant figure out where this leak is coming from, I know its not the ac because its not getting wet in the passenger side. I doubt its in any of the window seals or the sunroof because my interior isnt wet and the actual rugs above the carpet are completely dry. It feels as if its when I go over a puddle of water.. Is there any holes under the car that I should know about?

 

Jack that car up and put some jackstands under it.
crawl around and look at the bottom carefully look for missing plugs.
Also look at the lower firewall for missing plugs too.