Open for the 2026 season. The campground operates from April 17 through September 20. Reservations required via Recreation.gov. Minimum 2-day stay on weekends, 3-day minimum on holiday weekends.
Heat Advisory issued July 20 at 12:11PM PDT until July 27 at 8:00PM PDT by NWS San Diego CA
* WHAT...High temperatures in the mid-80s to 90s expected below 6000 ft. Low temperatures in the low to mid-70s. * WHERE...Riverside County Mountains, San Bernardino County Mountains, and San Diego County Mountains. * WHEN...From 10 AM Wednesday to 8 PM PDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Widespread moderate HeatRisk. Elevated low temperatures will limit overnight relief from the heat.
About
Oso Group Campground is a reservable group site nestled in a dense pine forest within the Barton Flats Recreation Area of San Bernardino National Forest. Situated at an elevation of 6,600 feet along scenic Highway 38, this campground offers a peaceful mountain retreat approximately 22 miles from the Mill Creek Work Station. The single large group site can accommodate up to 100 people and 20 vehicles, making it ideal for family reunions, scout troops, and organized group outings. The campground features potable drinking water, flush toilets, multiple picnic tables, and a central group fire ring with grills. The site includes shaded tent pads and primarily open group areas. Bears frequent this area, so proper food storage is essential. Firewood must be purchased locally to prevent the spread of invasive pests. Recreation opportunities abound with access to hiking, biking, and horseback riding trails including the Santa Ana River Trail. Jenks Lake nearby offers fishing and non-motorized boating. The campground operates seasonally from mid-April through late September, with a minimum 2-day stay required on weekends and 3-day minimum on holiday weekends.
Directions
From I-10 East, take University Street exit (EXIT 80). Turn left on University Street, then right onto E. Lugonia Avenue/SR-38. Continue on Highway 38 approximately 22 miles from Mill Creek Work Station to the campground entrance.
Amenities
| Water | Yes |
| Fires Allowed | Yes |
| Toilets | Yes |
| Dump Station | — |
| Wifi | No |
| Pets Allowed | Yes |
| Showers | No |
| Electric Hookups | — |
| Water Hookups | — |
| Sewer Hookups | — |
| Camp Store | No |
| Price | $480 - $490 |
Vehicle
| Max RV Length | — |
| Max Trailer Length | — |
| Big Rig Friendly | — |
| Pull Through Sites | — |
Contact
| Phone | +1 (909) 382-2600 |
Cell Service
| AT&T | Yes |
| Verizon | Yes |
| T-Mobile | None |
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