The Tallahatchie River is a river in Mississippi which flows 230 miles (370 km) from Tippah County, through Tallahatchie County, to Leflore County, where it joins the Yalobusha River to form the Yazoo River. The river is navigable for about 100 miles.Tallahatchie is a Choctaw name meaning "rock of waters." The sources of the Tallahatchie River have outcrops of iron sandstone.As part of the Flood Control Act of 1936, the federal government built an earth-filled flood control dam on the Tallahatchie near the town of Sardis, Mississippi, creating Sardis Lake. Source: Wikipedia