Jim,
If the campground is above about river mile 7 then it should be, or in this case should have been, a Forest Service Campground, either Marble Creek at about river mile 9 or Mineral Park, which is another 10 miles further upstream. The Forest Service has the same funding or lack of funding problem that you mentioned for DNR, and many of their facilities are open on a limited seasonal basis and can even closed for a year or more at a time. I still use them for access...but it can be a real bummer if the outhouses are locked up for the season!
;-)