Science Activities
Become a scientist for the day for Glen Helen Regional Park.
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 WATERSLIDES: The splash pas is open. The red and yellow slides are unavailable until further notice. We are offering a 50% discount on swim admission.
SPLASH PADS: Are open at Cucamonga-Guasti, Mojave Narrows & Prado Regional Parks.
MOJAVE NARROWS: The ADA-accessible tent campground restrooms are closed until further notice.
SART CLOSURE ALERT: Due to the Mission Blvd. Bridge project in Riverside, north side access from the San Bernardino County side will need to turn around from July 28 – Aug. 12. See map & details.
YUCAIPA ENTRANCE NOTICE: 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.