Newport Dunes Waterpark is a one-of-a-kind waterscape with the largest fleet of inflatables and watercraft rentals, inside a secluded, tranquil bay in Orange County, California. With more than a million gallons of seawater and acres of open space, Newport Dunes Waterpark is more than just an inflatable obstacle course. We offer tons of fun with our Newport Beach watersports rentals, including stand-up paddleboards, kayaks, pedal boats, and Duffy boats. The Waterpark is opened to both resort guests and the public. You are guaranteed to have a day packed with endless fun and adventure.