Stonyford Recreation Area
Stonyford, CA
Managed by USDA Forest Service, Mendocino National Forest, Grindstone Ranger District
- Vehicles allowed
- ATVDirt Bike
- Season
- Trails are open yearlong except Black Diamond (85344), open 08/03-03/30. All trails close after about 2 inches of rain in 24 hours or when saturated, until 48 hours with no measurable precipitation.Source: Forest Service MVUM layer 2, Grindstone Ranger District, attribute query run 2026-10-04 and Forest Service MVUM layer 2, Grindstone Ranger District, small attribute query run 2026-10-04 · Oct 4, 2026
- Closures
Closures: not checked yet. Check with USDA Forest Service, Mendocino National Forest, Grindstone Ranger District
- Official map
Stonyford Area Motor Vehicle Opportunity GuideUSDA Forest Service, Mendocino National Forest, Grindstone Ranger District · Checked Oct 11, 2026