Free, lots of sites, beautiful location.
This is a large dispersed camping area with a river-side "beach" suitable for RVs and what not (it's rocky not sandy, so tents might be pretty uncomfortable), as well as a dirt-ground area further in with trees that are great for tents and hammocks. Rock firepits are easily found, although I didn't see much wood around to gather so might want to bring some. When I was there it wasn't too crowded but there we always other people around. Two clean portable latrines when I was there as well - nice plus.
All in all, a great place to settle in and take in the scenery or do some fishing. Not too far from town either, for supply runs, and using Verizon I had perfect reception. Big plus for those of us working on the road!
Month of VisitSeptember