As a wildlife sanctuary, Thomas F. Riley Wilderness Park is home to an abundant number of native plants and animal life. Old groves of Western Sycamores and Coast Live Oaks border the park's two seasonally flowing creeks. The remaining land features rolling hills and canyons of Coastal Sage Scrub and grasslands.
This 544 acre wilderness park has five miles of multi-use and single track trails offering outdoor enjoyment for hikers, equestrians and mountain bikers. Ranger-led programs as well as self-guided hikes provide opportunities for the visitor to learn about the richness of this sanctuary. The park's outdoor "classroom" atmosphere offers students of all ages, scouts and other youth oriented organizations, a place to experience firsthand, the intricate relationships between the park's wildlife and habitat, offering an opportunity to work on outdoor projects and fulfill classroom requirements.
Parking is available for 50 vehicles including horse trailers. For equestrians, there are 4 pipe corrals and a watering fountain. Other amenities available are picnic tables, portable restrooms, drinking fountains and handicap access to the visitor center.
The Ranger Station houses a hands-on classroom and a variety of interpretive displays which highlight the park's wildlife and history. Surrounding the station is a one acre native plant butterfly garden, a large deck for picnicking and enjoying the views, and informational bulletin boards.
The OC Parks mobile application is now available to download. The new app makes it easy to explore all that the County regional and wilderness parks have to offer.
Using the OC Parks app for iOS or Android, you can easily get outside and find a park near you with the most detailed, accurate maps of all regional, wilderness, beach and historic parks and regional trails operated by the County of Orange. The app also offers detailed park descriptions and photos.
The mobile app lets users easily locate the closest playgrounds, parking and restrooms in each park. Search recent OC Parks news, events and alerts regarding park access, weather, trail conditions and more.
Starting in August, hikers will be collecting imagery of Orange County trails using the Google Street View Trekker, a wearable backpack with a camera system on top. The Trekker automatically gathers images as it goes. Later the imagery will be stitched together to create the 360-degree panoramas you see today in Google Maps.
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.
Starting Sunday, March 13, the spring-summer hours for regional parks are 7 a.m. to 9 p.m. That includes Carbon Canyon, Clark, Craig, Laguna Niguel, Mason, Mile Square and Yorba regional parks. Irvine Regional Park opens at 6 a.m. and will close at 9 p.m. Wilderness parks are open at 7 a.m. and close at sunset year round.
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.
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