The Hatchie River is a 238-mile-long (383 km) river in northern Mississippi and southwestern Tennessee. It is of considerable geographic, cultural, and historic significance. In large measure this is because it is the only major river of West Tennessee that has never been impounded, channelized, or otherwise modified by human activity to any major degree, although several of its tributaries have. Its environs are indicative of what much of West Tennessee must have resembled prior to the time of European settlement in early 19th century.