RESERVATION SITE: We are currently experiencing glitches after launching the new system. If you are experiencing difficulties making a reservation or see missing campsite/shelter photos, we are working to resolve these issues as soon as possible. Thank you for your patience. The new website is address is www.parkreservations.sbcounty.gov.
CUCAMONGA-GUASTI: The direct park phone line is out of service. Please call our main office at 909-387-2757. We apologize for any inconvenience.
MOJAVE RIVER FORKS: Due to an ongoing pavement project on State Route 173, there may be traffic delays leading to the park entrance.
PRADO: Day watering is scheduled by the Peacock, Red Tail Hawk, Blue Heron, Osprey and Mallard picnic shelters.

Regional Parks is excited to welcome back the one-day trout derby at Prado Regional Park on Saturday, Jan. 10, 2026, from 7:30 a.m. to 1 p.m. Gates open at 6:30 a.m. and pre-paid derby fees are encouraged. Derby fees are $20 per person and $15 per vehicle. A fishing license is required for all participants ages 16 years and older.
To pre-pay, visit https://bit.ly/3XgaY7Q.
PRADO LAKE CLOSURE FOR DERBY STOCKING
For the derby, 1,660 lbs. of trout, including lightning trout, will be stocked on Friday, Jan. 9. Due to the derby stocking, the lakes will be closed to the public for fishing on Friday, Jan. 9, and will reopen to the public after the derby ends at 1 p.m. on Saturday, Jan. 10.
Derby cash prizes will be awarded for:
• First place: $1,000
• Second place: $500
• Third place: $250
Participants will receive a wristband and packet with derby entry forms and rules. The derby is rain or shine, and no refunds will be given.
Regional Parks will have a weigh-in station available and encourages participants to allow plenty of time to weigh and enter their fish prior to the 1 p.m. cut-off time. Winners do not need to be present to claim their prize(s). Winners will be announced at approximately 1:15 p.m. at the Regional Parks weigh-in station area.
Park hours are 7:30 a.m. to 5 p.m. daily and is closed on Christmas Day. All prepaid participants will enter the park from Johnson and Pine Avenues just east of Euclid Avenue. The Johnson entrance is near the Prado Park Equestrian Center.
For seasonal stocking dates and fishing license information, visit parks.sbcounty.gov/park-fishing. For derby forms and rules, visit parks.sbcounty.gov/fishing-derby.