Intermittent closures are expected between 8 a.m. and 5 p.m. daily between June 24 and 28 and July 6-30, 2020 at Chickamauga Lock located at Tennessee River mile 471 in Chattanooga, Tennessee, for diving and maintenance operations. For both closure periods, no lockage will be started that cannot be completed by 8 a.m. For more information, contact the lock at 423-875-6230.