TRG® Island Cabins® are located on 13 "Private" acres on Nickajack Lake, close to Chattanooga. On a flat island four feet out of river. ''NO STEEP LAND OR STAIRS'' Boat docks are level with land! 70% of the 27 mile TRG is owned by TVA, Prentice Cooper State Forest and TRG Trust. Consisting of over 37,000 acres.