Overview Little Beaver Campground is located on the south-eastern shore of Little Grass Valley Reservoir, approximately four miles from the town of La Porte, CA. This campground is the largest campground at the reservoir and is adjacent to a swimming beach, boat launch ramp, amphitheater, and Lakeshore Trail.Recreation Little Grass Valley Recreation Area offers opportunities for many recreation experiences. Three boat launch ramps provide access to the water for fishing, water-skiing, sailing,