Hell Hole Reservoir
General data
- Name: Hell Hole Reservoir
- Water system: Sacramento River
- Water type: Artificial lake
- Progression: Rubicon River (California) -> Middle Fork American River -> North Fork American River -> Folsom Lake -> American River (Sacramento River tributary) -> Sacramento River -> Suisun Bay -> Carquinez Strait -> San Pablo Bay -> San Francisco Bay -> Golden Gate strait -> Pacific Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
Hell Hole Reservoir is an artificial, crescent-shaped lake in the Sierra Nevada mountain range 10 miles (16 km) west of Lake Tahoe in California, United States. The lake is about 3.5 miles (5.6 km) long when at full capacity.
The lake was created in 1966 with the completion of Lower Hell Hole Dam across the Rubicon River, a major tributary of the Middle Fork of the American River. Hell Hole is named for a deep canyon which is now under the waters of the lake.