For reservations call: 866-690-4006

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Family Fun at Our IA Hotel Waterpark


Make a splash at Grand Harbor Resort’s onsite indoor waterpark! We offer 25,000 square feet of wet fun for the entire family – including 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!

Waterpark gift cards

Stop in or call 866-690-4006 today to purcahse 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.

Arcade Hours are:

Thursday - 4pm to 9pm

Friday - 8am to 10:30pm

Saturday - 8am to 10:30pm

Sunday - 8am to 9pm

Closed - Monday, Tuesday and Wednesday

Birthdays and Groups

Birthdays at Grand Harbor Resort and Waterpark

Kids of all ages will love celebrating their birthday here! The Grand Harbor Resort & Waterpark offers two great birthday party packages, Ultimate Soaker and Crazy Cannonball. Both include:

  • Waterpark admission for 12 swimmers
  • One hour in private party room
  • Three large one-topping pizzas
  • Three two-liter bottles of soda
  • Quarter sheet cake
  • Arcade tokens
  • Personal server

Ultimate Soaker, Saturday's package, includes 100 arcade tokens and is $250.00, not including tax and service.
Crazy Cannonball, Sunday through Friday’s package, includes 80 arcade tokens and is $200.00, not including tax and service.
Non-swimmer guests are $5.00 plus tax. We appreciate a two-week in advance reservation to guarantee your party.
Call Alicia at (563) 690-3240 to book!

Upcoming Events

There’s always something exciting happening at the Grand Harbor Resort & Waterpark in Dubuque, Iowa. Browse our list of upcoming events below, and check back often for updates.

 Every Friday 4pm-8pm, Saturday 11am-8pm, Sunday 10am-1pm

  • Snowman Scavenger Hunt- One of our most popular activities. Start in the Watersquirts room to receive your scavenger sheet and search the first and second floors of the hotel to find missing items. Return to the watersquirts room to receive your prize!
  • Marcaroni Snowflakes- No two snowflakes are ever alike! Stop in to watersquirts and create your own masterpiece.
  • Pinecone Birdfeeder - Help a feathered friend this winter by making a birdfeeder out of pinecones!
  • Popsicle Stick Ornaments - Show off your creative side by making your own keepsake ornament to take home with you!
  • Other Fun-Filled Activities - Face Painting, Sand Art, Movies, Board games, Fuse Beads, Tissue Paper Flowers and Coloring!
  • Don't Forget the Popcorn!

WILD WILD WEST AT THE GRAND HARBOR ! SPRING BREAK APRIL 11TH THROUGH THE 20TH!  Hours are 11am-7pm in the Watersquirt Room on 2nd floor of hotel.

  • Snake in the Boot- Who can get more snakes in the boot? Two children at a time duel to see who will receive bragging rights. Each child receives 10 snakes, whoever gets the most in the boot wins!
  • Cow Ring Toss- Try to toss the ring around the bottle. The more you ring, the bigger the prize!
  • Panning for Gold- Join us in panning for gold! What will you discover?
  • Make your own Rope Coaster- Create a memento to take home with you!
  • Pin theBadge on the Cowboy- A unique twist on Pin the Tail on the Donkey. See who is closest!
  • Make your own Mustache and Western Photo Frame - Come tickle your nose with your very own custom made mustache! Decorsate a photo frame to display your favorite waterpark memories!
  • Design your Own "Wanted" Poster- Who is the baddest kid on the block? Creat your very own wild west souvenir to take home with you!


Other Area Attractions

Grand Harbor Resort & Waterpark’s central location, in the Port of Dubuque, IA, places you a short distance away from many of the area’s top activities and attractions. We’ve listed some of the highlights below; if you would like additional information about these or other things to do here in Dubuque, please ask us!