SMITH, Ky. (July 15, 2013) – The U.S. Army Corps of Engineers Nashville District is offering public tours of Martins Fork Dam here Saturday, July 27 and Aug. 17, 2013. Visitors can choose from a 9 a.m. and 11 a.m. tour time. Guided tours of the structure are free to the public and are approximately 45 minutes in length.