Most of the planes that were in the hangars closest to the road/drainage ditch will be totaled. In fact, some have already received confirmation they will get a check. Some will be rebuilt. They're putting dehumidifiers in the planes and will pull the interiors, some of the instruments, etc.
I agree with what others said, we can replace the factory-built planes. My friend with the pretty RV-7 spent 11 years building it... it kills me to see it that way.
Doc - my plane is fine. I had two feet of water and I had the elevators up, so really it only got to my wheels and tailwheel. I had already ordered new springs and hardware to rebuild the tailwheel anyway. The worst part for me was I had to turn the water hose on the plane, which I've never done before. That's the last thing you want to do to a polished plane. I'll spend hours polishing this weekend.
I can tell you we all understand people have lost their lives, homes, cars, etc. I can't imagine being the guy who survived only to find he lost his wife and kids. We all know we're lucky in the grand scheme.