Little Grass Valley Reservoir
General data
- Name: Little Grass Valley Reservoir
- Water system: Sacramento River
- Water type: Artificial lake
- Progression: South Fork Feather River -> Feather River -> 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
Little Grass Valley Reservoir is an artificial lake in Plumas County, California and Plumas National Forest near the Pacific Crest Trail.
The lake's waters are impounded by Little Grass Valley Dam, which was completed in 1961.