2005 Honda Civic leaking water in driver floorboard?

My drivers side floorboard is completely saturated with water and I am completely boggled. I don't think its the heating core because it's on the drivers side not the penger side, I checked to make sure my a/c lines aren't leaking in and the window is not leaking either. The water started from the middle of the floorboard and aculates outwards so it can't be coming from the dashboard. I've just ran out of ideas on what it could be.