Raging Waters is the largest water park in Los Angeles, delivering over 40 years of splashy summer memories for families across Southern California. Located in San Dimas, CA, this LA water park features more than 50 family-friendly attractions — from high-speed slides and twisting tube rides to lazy rivers, wave pools, and dedicated kids' zones. Refuel at on-site dining spots, relax in a private cabana, and take advantage of easy parking. Whether you're planning a birthday, group trip, or classic summer day out, this San Dimas, California water park is where LA comes to make a splash.