Yes, there is a camping spot located a few miles from the Deals Gap store, by the base of the dam on highway 28, just before Fontana Village. I can't remember the name, but have been there several times. Maybe 12 sites, have seen people primitive tent and trailer camp.
Also, nearer the Cherohala Skyway and Wheelers bike shop, there are some real nice state forest scenic camping sites along Santeelah lake. Beautiful views along the shore, just off highway 129.
Let me know if you more information.