About the water park at Treasure Island
Treasure Island Resort & Casino is a family hotel in Welch, Minnesota, home to the Lagoon. The park has a lazy river, a toddler area and 2 slides.
Check heights before you go: the strictest rule we found is 48" for Looping body slides (2). Each ride is listed below.
The Lagoon
Dashed = the hotel doesn't publish itSize from 2016 opening coverage.
Two looping 276-foot body slides; slides and lazy river closed Oct 19 to Nov 17, 2026 for a refresh.
320-foot lazy river with rapids.
Zero-depth toddler area with a toucan slide, dump bucket and geysers.
Good to know
Passes are not automatic: members of the free Island Passport Club get up to 3 wristbands with a king room and 5 with a queen room. Otherwise $14.97 per person.
Check the hotel calendar before you go.
Slides and attractions
Looping body slides (2)
48" min276-foot body slides
Toucan slide
No minimum listedToddler slide
Lazy river
No minimum listedLazy river with rapids
Activity pool
No minimum listedActivity pool
Adult area
No minimum listed21+ hot tubs and swim-up bar
Rooms for families
- King and double queen rooms across the Buffalo, Eagle and Wolf towers
- Luxury suites
More to do
Drive times
| From | Drive |
|---|---|
| Minneapolis | 45 min |
| Madison | 3 hr 35 min |
| Des Moines | 4 hr |
| Green Bay | 4 hr 15 min |
| Rockford | 4 hr 30 min |
| Milwaukee | 4 hr 50 min |
| Omaha | 5 hr 15 min |
| Chicago | 5 hr 50 min |
Estimates from each city's downtown, without traffic.
Nearby water park hotels
Parents ask
Is the water park included with a stay at Treasure Island?
Yes, with limits. Passes are not automatic: members of the free Island Passport Club get up to 3 wristbands with a king room and 5 with a queen room. Otherwise $14.97 per person.
How big is the water park at Treasure Island?
The indoor water park is 40,000 sq ft. Size from 2016 opening coverage.
Does Treasure Island have a wave pool or lazy river?
Wave pool: no. Lazy river: yes. 320-foot lazy river with rapids.
Is Treasure Island good for toddlers?
Yes. Zero-depth toddler area with a toucan slide, dump bucket and geysers.
What are the height requirements at Treasure Island?
Published minimums: Looping body slides (2) 48". Other attractions list no minimum.
How far is Treasure Island from Minneapolis?
About 45 min by car (around 46 miles). From Madison it is about 3 hr 35 min. These are estimates without traffic.
Can you visit the water park at Treasure Island without staying?
Yes, the hotel sells day passes. Prices and availability are not published, so check before you go.
Compare with similar hotels
Sources
Checked October 2026. Hotels change prices, hours and attractions, so confirm before you book. Report a change.