Lyons Dam is the concrete single-arch dam in Tuolumne County, California constructed in 1930 by the Pacific Gas and Electric Company, with a height of 132 feet, and a length of 535 feet at its crest.
River Ranch Campground is part private, part public. The private sites on River Ranch Campground are open; the public sites in Hacienda Campground remain closed. It features tent camping, camping trailer, picnic tables and toilets.