Good point since the flood water is not rushing over the track itself.
Sometimes river dirt can actually be great to actually put on a racetrack. Not at PRP though.
At Tri-State Speedway in Indiana they put black gumbo down supposedly from a river bottom and that stuff was the tackiest clay I've ever seen anywhere.
Once WOO Outlaw Sprints were doing wheelies and I stepped in some clay that I couldn't hardly scrape off.