• River: Tennessee River
• Length: 810 Miles
• Surface Area: 34,500 Acres
• Volume: 705,300 Acre Feet
• Length: 60 Miles
Chickamauga Lake is a reservoir along the Tennessee River created when the Chickamauga Dam, as part of the Tennessee Valley Authority, was completed in 1940. The lake stretches from Watts Bar Dam at mile 529.9 (853 km) to Chickamauga Dam at mile 471.0 (758 km) making the lake 58.9 miles (94.8 km) long. It borders Rhea County, Meigs County, and Hamilton County with 810 miles (1,303 km) of shoreline and two bridges crossing it at State Highway 60 and Highway 30. The lake is commonly used for recreational and outdoor activities, especially at the southern end, due to the high population density surrounding it. It was named after the Chickamauga (tribe) of Cherokees who used to live in the area.
The Hiwassee River flows into Chickamauga lake at Hiwassee Island, just north of the Highway 60 bridge at mile 500 (804.5 km).
Chickamauga Lake is immediately downstream from Watts Bar Lake and immediately upstream from Nickajack Lake.
Full pool for Chickamauga lake is 682 feet above sea level. The normal operating envelope is a level of approximately 676 ft through the end of March, rising steadily to full pool level of 682 feet by the middle of May. Then, full pool is maintained through the end of August, at which time the level drops steadily back down to 676 ft by the end of November. Actual lake levels vary due to weather conditions and power needs.