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.
Gold Spotted Oak Borer (GSOB), an invasive beetle that has killed thousands of oak trees in San Diego and Riverside counties in a short span of time, has now been detected in Orange County. The GSOB was discovered in approximately 60 trees on County park land in northern Orange County. Since GSOB is transported in oak firewood, it is critical that Californians keep firewood local and not move it out of the area.
The Polyphagous Shot Hole Borer (PSHB) is an invasive beetle that attacks common native and landscape trees, leading to branch dieback and overall decline. This can have a devastating effect on local trees, and you may see some being treated or removed in County parks.
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