Arrive as a family and leave as a pack at Great Wolf Lodge. Experience a world of play, all under one roof. Go with the flow in our water park resort or find adventurous dry-play throughout the lodge - this family getaway is one they will never forget. Great Wolf Lodge Water Park, located in Grand Mound, WA, is a water park resort built for family fun. Home to one of the best Indoor Waterparks in Washington as well as one of the top family resorts Grand Mound, there are lots of activities and attractions for the whole family. Whether it's hitting the water slides at Washington’s best water park, or going on our zipline, Great Wolf Lodge is the #1 place to be for those looking for a resort and water park Grand Mound.