As you know the Great Smokey Mountain National Park is now closed. You can email you representatives and tell them to pass a budget and open back up our National parks and forests. Here is a few of their links you can use.
Congressman. John J. Duncan Jr.
There are a few alternative places you can fish in the meantime.
3. Western North Carolina Fly Fishing Trail
5. You can safely park near any of the GSMNP or National Forest gates and walk in.
Good Fishing
Joe <((((<