Waterloo / Lost Island Waterpark KOA

4550 Hess Rd

Waterloo, IA 50701

Reserve: 800-562-2483

Info: 319-233-3485

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Local Area Attractions

Lost Island Waterpark Photo

Lost Island Waterpark

Iowa's largest waterpark, wavepool, lazy river, over 13 major waterslides.  2 onsite cafes, beer tent, gift shop, showers and much, much more.  Open June-August

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Lost Island GoKarts and Adventure Golf Photo

Lost Island GoKarts and Adventure Golf

Open weekends in May, daily June through August, and weekends in September. www.thelostisland.com

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