Cucamonga-Guasti Regional Park is a 150-acre county park in Ontario, California, with two lakes, picnic areas and facilities for family recreation. You can plan a visit around fishing, a picnic or the splash pad, keeping in mind that hours and fees vary by season and admission type.
- Location: 800 N. Archibald Ave., Ontario, CA 91764.
- Park setting: Two lakes, picnic tables, group picnic shelters, a playground and a splash pad.
- Typical hours: Open daily
- Admission basics: Vehicle fees vary by day; walk-in admission is $3 per person.
Park setting and activities
Cucamonga-Guasti Regional Park combines lakeside recreation with places to picnic and play. San Bernardino County describes the park as having picnic tables, group picnic shelters and a playground, as well as a splash pad. The splash pad is a zero-depth water-play area for children of all ages.
Fishing is available at both lakes year-round. The usual stocking pattern is trout from November to April and catfish from May to September. Stocking generally takes place on Thursdays, but dates and lake locations can change, and weather or other factors can cause delays. The lake being stocked is closed to fishing that day.
Fishing requires both a California state fishing license and a separate park permit. Daily permit fees are $15 for adults, $5 for children ages 4–14 and $20 per person on holidays. Fishing workshops and derbies also take place throughout the year.
How do you get to Cucamonga-Guasti Regional Park?
The park is at 800 N. Archibald Ave. in Ontario, and county tourism directions point drivers to I-10 at the Archibald exit. If you’re arriving by air at Ontario International Airport, how to get from ONT to Rancho Cucamonga is useful to consider when planning onward transport.
Allow time for the drive from the airport or your starting point, especially if you’re visiting for a scheduled activity.
New Kansan Motel is in Rancho Cucamonga, and you can browse this Rancho Cucamonga motel.
Hours, fees and seasonal facilities
The county describes the park’s usual schedule as 7:30 a.m. to 5 p.m. in fall and winter, and 7:30 a.m. to sunset in spring and summer. The park is closed on Christmas Day.
Opening hours
- Monday to Sunday: 7:30 AM–5 PM
Last checked November 2026. Hours can change on holidays and for special events.
Vehicle entrance fees are $10 Monday through Friday, $15 on weekends and $20 on holidays. Walk-in admission is $3 per person. Dogs cost $1 each and must stay on a 6-foot leash; assistance dogs for qualified individuals with a disability are exempt from the dog fee.
Picnic areas include four large covered shelters, two small covered shelters, picnic tables and barbecue grills. The non-refundable reservation fee is $10.
Small shelters Secundo, Catfish Cove and Kingfisher cost $100 per day; Grapevine, Mountain View, Orchard and Great-Horned Owl cost $400 per day. Reservations require liability insurance, and shelter fees are non-refundable if you cancel less than 30 days before the reservation date.
What to check before visiting
Check current park conditions before planning fishing or other water activities. Stocking schedules and lake locations can change, and a lake may close to fishing on its stocking day. For current hours, fees and facility conditions, check the official site before you go.
The park phone number provided by San Bernardino County is 909-481-4205. Confirm details with the county if you’re arranging a shelter reservation or building your day around a particular activity. For local transportation beyond the park drive, how to get around Rancho Cucamonga can help with planning.
FAQs
Where is Cucamonga-Guasti Regional Park?
It is at 800 N. Archibald Ave., Ontario, CA 91764. Directions from the county tourism listing use I-10 at the Archibald exit.
Does the park have picnic shelters?
Yes. Covered shelters are available to rent, and reservations require liability insurance.
Can you fish at the park throughout the year?
Fishing is available year-round, with seasonal trout and catfish stocking. You need a California state fishing license as well as a separate park fishing permit.