OLD HICKORY, Tenn. (May 8, 2014) – The U.S. Army Corps of Engineers at Old Hickory Lake is now accepting registration applications for the Saturday, May 17, lock and dam tour beginning at 11 a.m. at the Old Hickory Lock parking area. Free to the public and approximately 75 minutes in length, the guided tour will give registered participants an opportunity to not only view the facilities, but also learn about the lake’s history and important role the navigational lock and powerhouse facilities play with the cities and towns along the Cumberland River.