Indoor Waterpark Resorts in Washington
1 resort in Washington with an indoor waterpark on site, in Centralia. 1 offer day passes according to their own websites. Hours change by season, so check the resort's calendar for your dates.
Great Wolf Lodge Grand Mound
- Indoor waterpark
- Day passes offered
- 56,000 sq ft indoor
- Water fort treehouse with tipping bucket
- Wave pool
- Lily pad walk
- Raft slide
Checked on the resort's own website, Nov 2, 2026