Is the water park open?
The hotel says the water park closes temporarily for renovation from October 12, 2026, with no reopening date given. The hotel stays open.
About the water park at Grand Harbor
Grand Harbor Resort and Waterpark is a family hotel in Dubuque, Iowa, home to Grand Harbor indoor water park. The park has a lazy river.
We didn't find published height rules for its rides, so ask at the water park desk if you have small swimmers.
Grand Harbor indoor water park
Dashed = the hotel doesn't publish itA tube slide that runs inside and outside the building, plus small slides on the tree house.
A kiddie pool and a zero-entry spray area for small children.
Good to know
Listings show water park access as free for overnight guests; the hotel's own pages do not spell out passes.
Check the hotel calendar before you go.
Slides and attractions
Huck Finn tree house
No minimum listedMulti-story tree house with small slides, water guns and a tipping bucket
Tube slide
No minimum listedTube slide running inside and outside
Lazy river
No minimum listedLazy river
Basketball pool
No minimum listedActivity pool with hoops
Kiddie pool
No minimum listedChildren's pool
Hot tubs
No minimum listedTwo large hot tubs
Rooms for families
- Standard rooms with two queens, two doubles or a king plus sofa sleeper
- Junior suites with two queens, two doubles or a king, a sitting area and sofa sleeper
- Turret Suite with floor-to-ceiling windows
- Harbor View and Captain's Fireplace suites with a living room and wet bar
- Every room has a microwave and mini fridge
More to do
Drive times
| From | Drive |
|---|---|
| Madison | 1 hr 25 min |
| Rockford | 1 hr 30 min |
| Milwaukee | 2 hr 40 min |
| Chicago | 3 hr |
| Des Moines | 3 hr 5 min |
| Green Bay | 3 hr 35 min |
| Minneapolis | 4 hr |
| Omaha | 5 hr 15 min |
Estimates from each city's downtown, without traffic.
Nearby water park hotels
Parents ask
Is the water park included with a stay at Grand Harbor?
Yes. Listings show water park access as free for overnight guests; the hotel's own pages do not spell out passes.
How big is the water park at Grand Harbor?
The indoor water park is 25,000 sq ft.
Does Grand Harbor have a wave pool or lazy river?
Wave pool: not published. Lazy river: yes.
Is Grand Harbor good for toddlers?
Yes. A kiddie pool and a zero-entry spray area for small children.
How far is Grand Harbor from Madison?
About 1 hr 25 min by car (around 90 miles). From Rockford it is about 1 hr 30 min. These are estimates without traffic.
Can you visit the water park at Grand Harbor without staying?
Yes, the hotel sells day passes. Prices and availability are not published, so check before you go.
Lists this hotel is on
Sources
Checked October 2026. Hotels change prices, hours and attractions, so confirm before you book. Report a change.