Gorgeous !
We drove in and just expected to find a spot for a picnic. But ended up being able to camp for the night. This campground is very clean, and well-maintained. The campsites are far apart and all of them are next to a serene mountain river. There’s a tiny bit of noise from the highway above the campground but not much. they do take reservations but if a campsite is open for a few days you can pay cash and reserve it on the site 
Site3
Month of VisitJune