Flooded trailer

Been there, done that! Years ago, we drove our new camper through a torrential rain storm on the way to a campground and stopped for a break and gas. I decided to check on the camper and found that water was running down the floor of the camper like a river! Fortunately, our camper was still under warranty. Turns out a major slide seal was completely missing (must have been made on a Monday or Friday...). All lower cabinets and dinette panels warped/peeled and had to be replaced, as well as the carpet. Make sure the underbelly is removed, if there is one, and dry out the underside, too. I'd worry about the subfloor rotting.

Definitely get insurance involved, if the camper isn't under warranty.