2225 East Shaulis Road Waterloo, Iowa 50701
Conveniently located just minutes off of major highways and bike trails. Close to shopping, restaurants, golf, KOA campground, hotels, casino, movies and more! Entertainment for all ages!
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Parking - NEW for 2025
Parking at Lost Island Waterpark is $10 per space while visiting. A portion of your parking fee is donated to Make-A-Wish Iowa!
Driving Directions
ATTENTION GUESTS:
Over the next few seasons, the city will be doing road construction that may require alternate routes to Lost Island. Please see directions below for the best way to get here for the remainder of the season.
From Highway 20:
Exit onto the Highway 218 / Washington St. exit. Continue until E. Orange Rd. and take a right. You will see Southwest Estates at the corner. Continue on E. Orange Rd. following the detour signs for approximately 2-3 miles. You will come to the intersection of Hess and Shaulis Rd. Turn right and you will see the Lost Island entrance.
Alternative route from in town:
In Waterloo, you can come around the back side of Crossroads Mall and take Hess Rd. all the way out to the waterpark. Turn left at the intersection of Hess Rd. and Shaulis Rd. and you will see the Lost Island entrance.
Alternative route from in town:
Coming from either side of San Marnan Dr., turn south towards Home Depot onto Hammond Avenue. Continue on Hammond and turn left onto Shaulis Rd. Continue past the intersection at Hess Rd. and you will see the waterpark entrance on your left.