Now that I'm less confused about terminology being used I think fords and floodways/floodplains should be tagged differently, in the case of fords they can be assumed to be safe to cross when there is water present, floodways/floodplains/floodprone on the other hand can be hazardous when water is crossing the road way and I even wrote a page stub about the latter case:
http://wiki.openstreetmap.org/wiki/Key:flood_prone _______________________________________________ Talk-au mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-au

