bigsur, although on privately owned land up until recently, Rocky Fork Creek has been a publicly accessible trout fishery for quite a while. I fished it a few times about 15 years ago. You will recall Damon Hearne, Trout Unlimited Southeast Conservation Coordinator, speaking about the stream's history at the May Little River Chapter TU meeting as it is now one of TU’s southeastern brook trout restoration projects.
The hatchery in Unicoi is a federal egg producing facility. It wouldn't be involved regardless.
“Joe” Fred Turner
QuadX2 Stream Maps of the Southern Appalachians