1893. 2011-06-01T13:49:13Z. 2015-10-21T15:00:11Z. U.S. Geological Survey. English. Public. Anderson County (Tenn.), Blount County (Tenn.), Knox County (Tenn.), Loudon County (Tenn.), McMinn County (Tenn.), Monroe County (Tenn.), Roane County (Tenn.), and Tennessee.