Frank G. Bonelli Regional Park

Frank G. Bonelli Regional Park is a Los Angeles County regional park centered on a man-made reservoir in San Dimas, California. It is named after Frank G. Bonelli, a former county supervisor.

The park’s primary attraction is the reservoir, which supports boating, fishing, a marina, and shoreline picnicking; additional facilities include picnic areas, trails, and a campground. Multiple boat ramps and a marina make on-water access straightforward for motorboats and paddlecraft, and there are designated areas for group gatherings and events.

Los Angeles County developed and operates the park for regional outdoor recreation and day use. The park has been maintained as a county recreation resource and expanded with campground and equestrian facilities over time.

Located in the San Gabriel Valley town of San Dimas, the park sits roughly 30 miles east of downtown Los Angeles and is adjacent to the Pomona and Glendora areas.

• Water recreation: Boat rentals, a marina, and multiple boat ramps concentrate water recreation at the park's reservoir, making summer weekends busiest.
• Management: Managed by Los Angeles County Parks and Recreation and named for a former county supervisor.

What to See #

• Puddingstone Reservoir: The park's central reservoir provides a marina, boat launches, and seasonal motorboat and paddlecraft access for fishing and recreation.
• Campground: Offers both tent and RV camping plus group sites and basic campground services for multi-night stays close to the lake.
• Equestrian facilities: A county-run equestrian facility and ring provide space for riding events and trail access adjacent to park open areas.