Avalanche Bay is the largest indoor waterpark in Michigan at 88,000 square feet and located at Boyne Mountain Resort, a short drive from Bay Harbor. The weather is always perfect and you'll have plenty to explore with six exciting water slides, a children's pool, relaxing hot tubs, RipZone surf simulator and a lazy river!
New for 2021
This winter, resort guests enjoy 10% off Avalanche Bay passes as part of our new Stay & Save program!
You'll use your Confirmation Number as your discount code when purchasing waterpark passes online.