I went down there with a truck load the other day, and they had put up big "No Dumping" signs. I dumped it anyway, one eye out for the cops, because there was already a bunch of stuff there.
When I asked the county person in charge of the program what we are supposed to do, she said there were complaints about people dumping household trash there instead of flood debris. As far as she knew, it was still okay for flood debris.
But yesterday she sent another email that nothing at all can be put there. Fortunately, I have gotten most of my bulky debris hauled off, including a ruined water heater, so it's not the end of the world for me. Can't speak for all the other people who have yet to get started cleaning out their summer cabins.