CUCAMONGA-GUASTI FULL PARK CLOSURE: Due to a special event, the park will be closed to the public on Saturday, Sept. 26.
LAKE ALGAE NOTICES: Both lakes at Cucamonga-Guasti & Glen Helen are under a Caution status. Prado is under a Warning status. Learn more about algal blooms.
CALICO GHOST TOWN: The phone line is currently down. If you need assistance, call our main number 909-387-2757.
GLEN HELEN FULL PARK CLOSURE: Due to a special event, the park will be closed to the public on Sept. 25-27.
MOJAVE NARROWS: Splash pad will be closed after Monday, Sept. 7 through May 2027 for construction of a new splash pad.
PRADO: Due to current lake conditions, fishing activities at Prado Regional Park are temporarily suspended until further notice.
SPLASH PADS: Are open at Cucamonga-Guasti & Prado.
YUCAIPA: Be advised that lining up or stopping on Oak Glen Rd. to enter Yucaipa is not permitted prior to 7:30 a.m. ‘No Stopping’ signs are posted along Oak Glen Rd. for safety and traffic impact.

Learn how to recycle organic resources, such as yard trimmings, as well as fruit and vegetable waste into compost for gardens. Join us at Cucamonga-Guasti Regional Park on Saturday, March 1, from 1 pm. to 3 p.m. for a hands-on education activity. All supplies will be provided, while they last.
Instead of putting organic waste into the garbage to be hauled to the landfill, learn to compost. All ages are welcome.
Admission is $10 per vehicle. Make a day out of this educational event and pack a picnic or come and enjoy a day of fishing at our lakes or enjoy the playground and splash pad. Leashed pets are welcome!
Cucamonga-Guasti Regional Park is open daily from 7:30 a.m. to 5 p.m., and is located at 800 N. Archibald Ave., in Ontario next to Top Golf.
Follow Regional Parks on Facebook and Instagram to stay updated on park news.