Iowa Is Home to One of the Best Waterparks in the US for Summer 2026

Summer road trips are right around the corner, and with gas prices climbing, you might be looking to stay a little closer to home this year. The good news? One of the best waterparks in the entire country is just a short drive south.

USA Today recently released its 10Best Readers' Choice rankings, and Lost Island Waterpark didn't just land in the top five, one of its biggest attractions was named the absolute best in the nation. Check out the national recognition this park received below, along with a guide to help you plan your visit.

This Northern Iowa Waterpark Was Just Named One of the Best in America

Lost Island Waterpark, in Waterloo, Iowa was recognized as the 4th best outdoor waterpark in the country, and some of its individual attractions ranked high in their respective categories too.

• No. 1 Best Wave Pool in the Country: Tsunami Bay at Lost Island is the best wave pool in the country. It's praised for being accessible and safe, and featuring a zero-depth entry and clear inner tubes.
• 2nd Best Water Coaster in the Country: Wailua Kupua uses magnets to launch you up inclines before plunging you into sudden drops and sharp turns.
• 3rd Best Lazy River in the Country: The Kailahi River features waterfalls, lush foliage, and island music.

Plan Your Trip: A Guide To Visiting Lost Island Waterpark in Waterloo, IA

The waterpark is the star of this article, but don't forget that the Lost Island also includes the Lost Island Theme Park, Adventure Golf, and Go-Karts. Whether you want to catch air on a roller coaster or settle a family grudge on the mini-golf course, there is enough to fill an entire weekend.

Lost Island Waterpark Hours of Operation

• Theme Park (Late May): Open weekends (May 23–25, 30–31) from 10:30 AM – 6:30 PM.

Summer Season (Starting June 5):

• Waterpark & Theme Park: 10:30 AM – 6:30 PM daily.
• Late Nights: Fridays & Saturdays (July 3 – August 15) until 9:30 PM.
• Golf & Go-Karts: 2:00 PM – 9:00 PM.

 How Much Are Tickets To Lost Island Waterpark in Waterloo, IA

Pro-Tip: Buy your tickets online before midnight the day before you go to save money!

• Standard Day Pass: $32.00 – $36.00 (Online) vs. $39.00 (Gate).
• One-Day Island Pass: $62.00 (Covers both the Waterpark and Theme Park).
• Two-Day Island Pass: $75.00 (The best value for a full weekend of fun).
• The Bundle: $47.50 for one waterpark admission, one round of golf, and one go-kart race.
• Kids 3 & Under: Always FREE!

If you plan on going more than once, the Standard Season Pass ($185) pays for itself quickly with free parking and food discounts.

Where Is Lost Island Waterpark?

2225 E Shaulis Rd, in Waterloo, Iowa