Gizmo Isle
A named island on the lake near Rockwood, best known as the home of Gizmo Jam, the lake's annual on-island concert.
Gizmo Isle is a lake island on Watts Bar near 1701 New Hope Road in Rockwood. It is best known as the host of Gizmo Jam, the annual on-island concert. Outside of the event, public information about the island is thin.