We are excited to announce the pools at Glen Helen & Yucaipa Regional Parks will open Memorial Day Weekend, beginning Saturday, May 27 from 10 a.m. to 4 p.m. through Monday, May 29. Splashpads are open at Guasti, Mojave Narrows & Prado. Follow us on Facebook & Instagram for pool updates. View Glen Helen pool schedule. View Yucaipa pool schedule.