Sand Bar Flat Campground is a remote, first-come, first-served riverside campground on the Middle Fork Stanislaus River in Stanislaus National Forest, offering vault toilets, picnic tables, and excellent fly fishing access.

Access requires navigating approximately 10 miles of steep, narrow, unpaved forest roads from Highway 108 (not recommended for large RVs over 35 feet), and campers must bring their own drinking water as potable water is unavailable.

The campground operates seasonally April through December with basic amenities and a peaceful, secluded setting ideal for anglers and river recreation enthusiasts seeking a primitive experience away from crowds.