Actually, the worst case would be getting caught and arrested by Corps guys. Permits for gathering driftwood from Corps lakes are available but without the permit it can be serious business. We have two Corps lakes near us and the people who get permits for certain areas of shoreline are very, make that VERY touchy about folks taking "their" driftwood. That said, do it in the dark with quiet saws. Looks like an interesting piece of wood.
BTW, we own some property near Kentucky Lake, just a spit away from Cumberland. Fine country there. Almost as nice as the Ozarks.
"Folks is funny critters."
Think for yourselves and let others enjoy the privilege to do so, too. ~Voltaire