There are plenty of
outdoor water parks throughout Pennsylvania. But what is a water park-loving person to do when the water slide/wave pool bug hits in the middle of January? Head to an indoor water park!
Temperature controlled and weatherproof, indoor water parks offer year-round getaways with guaranteed slide time. There aren't a heck of a lot of parks in the state, but choices include Great Wolf Lodge, which is part of the biggest chain of water park resorts, and Splash Lagoon, both of which made my list of the best indoor water parks in North America.
All of the parks are part of resorts that include hotels. Some of the resorts restrict water park admission to registered guests of the hotels, while others offer passes to the general public, sometimes on a restricted basis. Check the details by clicking on the parks below. The water park resorts are arranged alphabetically.

© Arthur Levine, 2006. Licensed to About.com.Located in the Pocono Mountains town of Scotrun. The 78,000-square-foot indoor water park includes a water coaster and a wave pool. The park is open to Great Wolf Lodge hotel guests only.

Jeremy Levine, 2006. Licensed to About.com.Located in Erie. At 70,000 square feet, Splash Lagoon is a relatively large indoor water park and offers a good selection of rides including two a wave pool and two bowl rides. The park is open to guests of four affiliated Erie hotels. General public passes are also available of a limited basis.

Split Rock Resort, 2009. Used with permission.Located in the Pocono Mountains town of Lake Harmony. The medium-sized indoor water park, which is known as H2Oooohh! (cute name), offers a FlowRider surfing ride and a wave pool. The park is open to the resort's hotel guests, but also offers public day passes based on availability.