<P> The river has been dammed numerous times, primarily in the 20th century by Tennessee Valley Authority (TVA) projects since the 1930s . The placement of TVA's Kentucky Dam on the Tennessee River and the Corps of Engineers' Barkley Dam on the Cumberland River led to the development of associated lakes, and the creation of what is called Land Between the Lakes . A navigation canal located at Grand Rivers, Kentucky, links Kentucky Lake and Lake Barkley . The canal allows for a shorter trip for river traffic going from the Tennessee to most of the Ohio River, and for traffic going down the Cumberland River toward the Mississippi . </P> <P> Cities in bold type have more than 30,000 residents </P> <Ul> <Li> Bridgeport, Alabama </Li> <Li> Chattanooga, Tennessee </Li> <Li> Cherokee, Alabama </Li> <Li> Clifton, Tennessee </Li> <Li> Crump, Tennessee </Li> <Li> Decatur, Alabama </Li> <Li> Florence, Alabama </Li> <Li> Grand Rivers, Kentucky </Li> <Li> Guntersville, Alabama </Li> <Li> Harrison, Tennessee </Li> <Li> Huntsville, Alabama </Li> <Li> Killen, Alabama </Li> <Li> Kingston, Tennessee </Li> <Li> Knoxville, Tennessee </Li> <Li> Langston, Alabama </Li> <Li> Lenoir City, Tennessee </Li> <Li> Loudon, Tennessee </Li> <Li> Muscle Shoals, Alabama </Li> <Li> New Johnsonville, Tennessee </Li> <Li> Paducah, Kentucky </Li> <Li> Redstone Arsenal, Alabama </Li> <Li> Savannah, Tennessee </Li> <Li> Scottsboro, Alabama </Li> <Li> Sheffield, Alabama </Li> <Li> Soddy - Daisy, Tennessee </Li> <Li> Signal Mountain, Tennessee </Li> <Li> South Pittsburg, Tennessee </Li> <Li> Triana, Alabama </Li> <Li> Waterloo, Alabama </Li> </Ul> <Li> Bridgeport, Alabama </Li>

Where does the mississppi river start and end