Mountain Creek Waterpark is built among the beautiful mountains of Sussex County New Jersey. There are over 30 fun attractions for kids and adults! You’ll find some of the most thrilling water rides at Mountain Creek, all along the backdrop of picturesque mountains, making it seem as if the thrills are carved from the rushing mountain waters. The Alpine Mountain Coaster is a unique Sussex County, NJ kids attraction that allows you to control your own speed as you ride down a mountain. Other mountain adventures include water rides wrapped around mountain terrain, a zip-lining adventure and more. In the winter, Mountain Creek transforms into an action-packed winter adventure park.