Raccoon Mountain Reservoir
General data
- Name: Raccoon Mountain Reservoir
- Water system: Tennessee River
- Water type: Artificial lake
- Progression: Nickajack Lake -> Tennessee River -> Ohio River -> Mississippi River -> Gulf of Mexico -> Atlantic Ocean -> Planet Earth
- Climates: Subtropical
- Continents: North America
- Countries: United States of America
Raccoon Mountain Reservoir (more accurately the upper reservoir at TVA’s Raccoon Mountain Pumped‑Storage Plant) is a man‑made storage lake used for hydroelectric power generation near Chattanooga in southeast Tennessee. It’s a bit different from typical river‑fed lakes. The water source and “outflow” is the Tennessee River via Nickajack Reservoir at the base of the mountain. During low demand, water is pumped up from Nickajack Reservoir on the Tennessee River to fill the upper reservoir. Lake Info When power generation is needed, water is released down through tunnels inside the mountain, driving turbines, and then it is discharged back into Nickajack Reservoir / the Tennessee River.