U.S. Army Corps of Engineers, Nashville District announced the Nickajack Lock at Tennessee River mile 424.7 in Jasper, Tennessee, is closed Sept. 15 through 6 p.m. Oct. 5, 2020. The lock will then undergo intermittent closures between 6 a.m. and 4 p.m. daily Oct. 6-13, 2020. It will resume normal operations 4 p.m. Oct. 13, 2020. The lock closures allow maintenance personnel to perform repairs on the upper and lower lock gates.