Raging Waters reopens after 18-month closure Published SAN DIMAS, Calif. - Raging Waters Los Angeles reopened on Saturday, welcoming guests for the first time since the COVID-19 pandemic began. The reopening of the water park after 18 months concluded the longest off-season in the park's history. The first season after the onset of the pandemic features the return of such crowd favorites as the million-gallon Wave Cove pool and attractions like Aqua Rocket, Dr. Von Dark's Tunnel of Terror and Dragon's Den. Cleanliness and safety are the focus. The most important elements of Raging Waters' m...