O'Neill Regional Park's 4,500 acres are situated in beautiful Trabuco and Live Oak Canyons. The park is heavily wooded with coast live oak and sycamore trees. The hillsides surrounding the park are filled with cactus, wild buckwheat, sagebrush and chaparral of scrub oak, buckthorn and mountain mahogany. Trabuco and Hickey Creeks also meander through the park, flowing in winter and early spring, dry in summer and fall.
The park serves both as an overnight camping and day use/picnic facility.
Picnic areas vary in size and are available on a first come, first served basis or by reservation. Barbeques and picnic tables are available throughout the park. Call the park for more information.
More than 23 miles of scenic trails can be explored by foot, bicycle or horseback. Other day use activities include horseshoe pits, two large community turf areas and a children’s playground.
The Arroyo campground offers 79 campsites varying in size to accommodate RVs or tent camping for up to eight people per site. Reservations for individual sites can be made online, by phone or in person. The park offers eight large group campsites for parties of 17 or more and five equestrian campsites, each equipped with horse corrals, barbeques and fire pits. Reservations for groups of 17 or more can be made by calling the park office at (949) 923-2260.
Whiting Ranch Wilderness Park and day use areas in the western end of O’Neill Regional Park were closed Friday for a mountain lion investigation and will remain closed until further notice.
Park visitors reported multiple mountain lion sightings at O'Neill Regional Park Thursday evening and OC Parks rangers conducted an investigation. Friday morning, wardens from the California Department of Fish and Wildlife joined the investigation and recommended closing the area as a precaution.
Additional sightings were reported at Whiting Ranch Wilderness Park midday Friday, and wildlife officials recommended closing that park as well.
The O’Neill closure includes the Vedanta Wilderness Area, Eagle Grove Day Use Area, Live Oak and connecting trails. The Mesa Day Use Area, Arroyo Trabuco and campgrounds remain open.
Thursday’s sightings at O’Neill Regional Park follow three sightings at Whiting Ranch Wilderness Park on Monday, Sept. 19. Rangers and game wardens investigated those sightings on Monday and Tuesday. Rangers placed warning signs at Whiting Ranch Wilderness Park and continue to patrol the area.
Visitors to all wilderness areas should always remain alert to potential hazards and report any sightings to the park office at (949) 923-2260. If you encounter a mountain lion, make yourself look large, make noise, throw rocks and do not turn your back to the animal or run.
Please see the mountain lion flier on our website for information about what to do if you encounter one.
Rangers at Whiting Ranch Wilderness Park received three reports of mountain lion sightings at the park on Monday, Sept. 19. Rangers and game wardens investigated all the sightings. Rangers have placed warning signs at the park and continue to patrol the area.
Visitors to all wilderness areas should always remain alert to potential hazards and report any sightings to the park office at (949) 923-2245.
Significant traffic on unauthorized trails has caused damage in the Ladera Ridge (Las Flores) area of the park. This area is closed, and in the interest of protecting the valuable natural resources found on both County and the Rancho Mission Viejo Reserve, measures will be taken to prevent further destruction.
Making Orange County a safe, healthy, and fulfilling place to live, work, and play, today and for generations to come, by providing outstanding, cost-effective regional public services.
You Are Now Leaving the County of Orange Official Portal