Little Grass Valley Reservoir, reservoir in Plumas County, California, US

Little Grass Valley Reservoir is a man-made lake in Plumas County, set within the northern Sierra Nevada among pine and fir forests. The water fills a forested valley and the surrounding shoreline has several campgrounds and boat launch areas.

The Maidu people lived in this area for generations before settlers arrived for mining and grazing in the 1800s. The dam was completed in 1961, flooding the valley and creating the reservoir that exists today.

Little Grass Valley Reservoir is the centerpiece of the Little Grass Valley Recreation Area, run by the Feather River Ranger District of Plumas National Forest. The reservoir's name comes from the grassy valley the dam flooded; the South Feather Water and Power Agency owns the dam. Visitors today boat, camp, fish, swim, picnic, ride horses and mountain bikes, and watch wildlife around the water.

The reservoir is reached by a paved road from the town of Quincy and is open to day visitors as well as campers. Arriving early in summer is a good idea since the campgrounds and shoreline spots fill up quickly on weekends.

Little Grass Valley Dam, which impounds the lake, is a rock-fill structure 840 feet long and 210 feet high with 18 feet of freeboard, owned by the South Feather Water and Power Agency. The reservoir drains into the South Fork Feather River. The Pacific Crest Trail runs north of the lake and is reached via the Bald Mountain Trail from Horse Camp.