Oso Group
Open for the 2026 season. Operating dates are April 17 through September 20. Reservations required via Recreation.gov with 2-day minimum on weekends and 3-day minimum on holidays.
Heat Advisory issued July 31 at 11:43AM PDT until August 2 at 8:00PM PDT by NWS San Diego CA
* WHAT...High temperatures in the 90s to around 100 below 6000 feet expected. * WHERE...San Bernardino County Mountains. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses.
Air Quality Alert issued July 30 at 4:00PM PDT by NWS San Diego CA
* WHAT...The South Coast AQMD has issued an air quality alert due to harmful levels of ozone pollution. Visit https://www.aqmd.gov/alertinfo to check current and forecasted air quality levels. * WHERE...San Bernardino, Redlands, Riverside, Crestline and the Coachella Valley.. Levels of ozone pollution can vary by time and location depending on emissions and air pollution transport. * WHEN...until 8 PM Sunday. The highest ozone levels typically occur in the afternoon and early-evening hours. * IMPACTS... Ozone air pollution can cause serious health problems, including trouble breathing, asthma attacks, and lung damage. Everyone can be affected, but sensitive groups such as people with lung disease, older adults, people who are pregnant, children, and those who spend a lot of time outdoors are at greater risk.
About
Oso Group Campground occupies a scenic spot in the Barton Flats area of the San Bernardino Mountains, surrounded by pine forest at roughly 6,600 feet elevation. The single group site can host up to 100 people and 20 vehicles, making it well-suited for large family reunions, scout troops, or organizational gatherings. Amenities include multiple picnic tables, pedestal grills, a central group fire ring, and potable water, though restrooms are not available on site. The campground provides access to excellent hiking, biking, and equestrian trails, including the Santa Ana River Trail and the Rio Monte Trail, which leads to panoramic views of the Santa Ana River Valley. Jenks Lake, a short drive away, offers fishing for rainbow trout, largemouth bass, bluegill, and catfish, along with non-motorized boating. Bears frequent the area, so proper food storage is essential. Reservations are required and can be made through Recreation.gov up to 12 months in advance. The site requires a 2-day minimum stay on weekends and a 3-day minimum on holiday weekends. Roads and parking areas are gravel and dirt.
Directions
Take I-10 East to Redlands. Take the University Street exit (Exit 80). Turn left (northbound) on University Street. Turn right onto E. Lugonia Avenue/SR-38. Continue on State Highway 38 for approximately 22 miles to the campground entrance.
Amenities
| Water | Yes |
| Fires Allowed | Yes |
| Toilets | No |
| Dump Station | — |
| Wifi | — |
| Pets Allowed | Yes |
| Showers | No |
| Electric Hookups | — |
| Water Hookups | — |
| Sewer Hookups | — |
| Camp Store | — |
| Price | $480 |
Vehicle
| Max RV Length | 40ft |
| Max Trailer Length | 40ft |
| Big Rig Friendly | — |
| Pull Through Sites | No |
Cell Service
| AT&T | Yes |
| Verizon | Yes |
| T-Mobile | None |
Availability
Photos
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