I had the opportunity to visit Buffalo Crossing from September 16-19. The weather was as incredible as the campsites - High 75'/Low 44'. This campground is managed by the USDA Forest Service. A camp host will stop by to collect the fees. We arrived on a Wednesday night and the campground was at most 1/2 full. There are about 16 camp sites with several that would support a Class B RV. There was no problem with the 24' travel trailer we had. There is also a 55' diameter roundabout at the end of the campground near site #16. I would not recommend a Class A for this campground. IMO the best site in the campground is #11 which offers the most room, fire pit, picnic table, and plenty of overhead cover.
It is also closest to the well-maintained bathrooms. The star filled night skies at this campground were amazing. The East Fork of the Black River is just a couple of steps from every site. On my trip we landed Rainbow and Brown Trout. I'll definitely be going back.