The Hiwassee River has its headwaters on the north slope of Rocky Mountain

Rocky Mountain (Georgia)

Rocky Mountain is the name of nine distinct mountains located in the North Georgia mountains that are spread among six different counties in Georgia-Fannin County:...

 in Towns County

Towns County, Georgia

Towns County is a county located in the U.S. state of Georgia. It was created on March 6, 1856. As of the 2000 census, the population was 9,319. The 2007 Census Estimate shows a population of 10,894. Its county seat is Hiawassee.-History:...

 in northern Georgia

Georgia (U.S. state)

Georgia is a state located in the southeastern United States. It was established in 1732, the last of the original Thirteen Colonies. The state is named after King George II of Great Britain. Georgia was the fourth state to ratify the United States Constitution, on January 2, 1788...

 (as the Hiawassee River) and flows northward into North Carolina

North Carolina

North Carolina is a state located in the southeastern United States. The state borders South Carolina and Georgia to the south, Tennessee to the west and Virginia to the north. North Carolina contains 100 counties. Its capital is Raleigh, and its largest city is Charlotte...

 (there assuming its more common moniker Hiwassee) before turning westward into Tennessee

Tennessee

Tennessee is a U.S. state located in the Southeastern United States. It has a population of 6,346,105, making it the nation's 17th-largest state by population, and covers , making it the 36th-largest by total land area...

, flowing into the Tennessee River

Tennessee River

The Tennessee River is the largest tributary of the Ohio River. It is approximately 652 miles long and is located in the southeastern United States in the Tennessee Valley. The river was once popularly known as the Cherokee River, among other names...

 a few miles west of State Route 58 in Meigs County, Tennessee

Meigs County, Tennessee

Meigs County is a county located in the U.S. state of Tennessee. As of 2010, the population was 11,753. Its county seat is Decatur.-History:Before 1819, the area that is now Meigs County was Cherokee territory. White settlers established ferries to cross the Tennessee River from Rhea County as...

. The river is 147 miles (236.6 km) long.
The river is dammed by the Tennessee Valley Authority

Tennessee Valley Authority

The Tennessee Valley Authority is a federally owned corporation in the United States created by congressional charter in May 1933 to provide navigation, flood control, electricity generation, fertilizer manufacturing, and economic development in the Tennessee Valley, a region particularly affected...

 (TVA) in three locations, all in western North Carolina.