Dubuque, Iowa Water Park

The greatest onsite Iowa Water Park around

Make a splash at Grand Harbor Resort’s onsite indoor waterpark! We offer 25,000 square feet of wet fun for the entire family. This refreshing experience includes waterslides, tube rides, rope ladders, waterspouts, water chutes, squirt guns and powerful water cannons as well as a lazy river, activity pools, and two giant hot tub whirlpools. Grab a snack at the River’s Edge Café or experience the “four story splash” – 350 gallons of water dumped every eight minutes from our four-story Huck Finn II Treehouse!

 BOOK THIS OFFER BEFORE DECEMBER 30, 2017 (Sale starts November 24th)

Individual Season Pass Special

 · Year Long Season Pass

· 3 visitor passes (one time use)

· $10.00 Concession Voucher

 $80.00  + tax

 Family Pass

 · Family of 4 yearly waterpark passes

 · $30.00 Grand Harbor Gift Card

 · 12 Visitor Passes  (one time use)

 $300.00 + tax

  

Please view our Waterpark Rate Calendar January 2018. 

Please view our Waterpark Rate Calendar December 2017


View the Waterpark Concessions Menu.
View our 2017 Operating Calendar.

Waterpark Gift Cards

Stop in or call 866-690-4006 today to purchase your hotel gift card!

Cave Arcade

Be sure to visit the “Cave,” our huge interactive game room, with all of your favorite video and arcade games, including the Wheel of Fortune, Whack-a-Mole and Ski Ball. Collect tickets to redeem for prizes at our prize redemption center.

Seasonal Hours for the Arcade are:

Thursday – 4:00 p.m. to 9:00 p.m.
Friday – 8:00 a.m. to 10:00 p.m.
Saturday – 8:00 a.m. to 10:00 p.m.
Sunday – 8:00 a.m. to 9:00 p.m.
Closed - Monday, Tuesday and Wednesday

Please call 1-866-690-4006 for daily hours

Birthdays and Groups

Birthday Party Packages

Call Tony Roma's at 563-690-3249 to book your party

$200 Superstar Package ($250 on Saturdays and Grand Harbor Holidays)

  • Choice of (24) chicken tenders or two two-topping pizzas
  • Two platters of french fries                                                        
  • Two pitchers of soda (Coke, Diet Coke, Sprite, Root Beer, Orange Fanta, Cherry Coke and Lemonade)
  • (12) cookie sundaes
  • 10 swimmer's Admissions
  • 2 Free Adults/Chaperones
  • Free Birthday Child
  • Reserved seating inside the waterpark

All Star Package $150.00 ($190 on Saturdays and Grand Harbor Holidays)

  • 10 swimmer's Admissions
  • 2 Free Adults/Chaperones
  • Free Birthday Child
  • Reserved seating inside the waterpark

Add Ons

  • $19.99 (12) Chicken tenders
  • $7.00/Pitcher of soda              
  • $1.00/Cookie sundae
  • $30.00/Birthday cake
  • $50.00/Banquet room

Pizza Add Ons

  • One topping - $14.00                                          
  • Two toppings - $16.00
  • Three toppings - $18.00
  • Specialty (Meat Lovers, Supreme, Veggie, Hawaiian, BBQ Chicken) - $24