Enjoy the Mississippi-themed indoor waterpark in the Grand Harbor Resort.

You'll feel as if you stepped back in time to the days of Huckleberry Finn...complete with paddle wheelers in the place they were built - the Dubuque Boat and Boilerworks. While the rustic, industrial atmosphere takes you back to the days when the local boatyard was turning out boat after boat, you'll have much, much more fun than the average boat craftsman!

Prepare to get soaked! Every 9 minutes the Huck Finn II's whistle will blow. And when it does...watch out! A huge bucket will dump nearly 800 gallons of water on the brave adventurers who dare to get close. That's when the real fun begins.

25,000 square feet of wet fun for kids and adults of all ages with thrilling waterslides, an exhilarating inside/outside tube ride, rope ladders, water spouts, water chutes, squirt guns and powerful water cannons. There's also a relaxing lazy river, several pools and two giant hot tub whirlpools.