For reservations call: 866-690-4006
Make Sure The Park Is Open During Your Stay!
Grand Harbor Waterpark is open daily during spring break, summer & select holiday periods.
The Park is closed Mondays, Tuesdays & Wednesdays during select seasons.
Please view the Grand Harbor Waterpark Park Hours for complete details.
The Grand Harbor Resort & Waterpark occasionally notifies guests on our email list about exclusive vacation packages, seasonal promotions, local Dubuque events, and news about the resort.
Join our mailing list, and be among the first to know.