Lost Island Waterpark

Consistently ranked among the best in the nation, Lost Island Waterpark is a premier tropical oasis featuring over 11 major slides, a massive wave pool, and one of the longest lazy rivers in the Midwest.

buy tickets
Credit | Travel Iowa

Top 5 Attractions

  • Wailua Kupua

    Experience the power of a hydromagnetic water coaster that propels your raft through high-speed climbs and sudden drops.

  • Molokini Crater

    Plunge down a dark tunnel before spinning around the walls of a massive 60-foot funnel.

  • Tá Katipo

    Unleash your competitive side on side-by-side mat racers where you can challenge friends and family to a high-speed sprint to the finish line.

  • Kailahi River

    Drift along one of the longest lazy rivers in the Midwest, where tropical scenery and gentle waterfalls offer the ultimate island escape.

  • Lost Soul Falls

    Test your courage on a pair of near-vertical speed slides where you free-fall at 28 feet per second for the ultimate adrenaline rush.

Waterpark Attractions

Explore

Park Offerings

Lost Island Waterpark is a premier tropical oasis in the heart of the Midwest, featuring a rare hydromagnetic water coaster, one of the region’s longest lazy rivers, and immersive island theming that transports you to a paradise far away.

Food & Drink

explore

Adventure Golf

explore

Waterpark Cabanas

Explore

Lost Island Mermaids

explore

Go-Karts

Explore

Top 5 Attractions

  • Wailua Kupua

    Experience the power of a hydromagnetic water coaster that propels your raft through high-speed climbs and sudden drops.

  • Molokini Crater

    Plunge down a dark tunnel before spinning around the walls of a massive 60-foot funnel.

  • Tá Katipo

    Unleash your competitive side on side-by-side mat racers where you can challenge friends and family to a high-speed sprint to the finish line.

  • Kailahi River

    Drift along one of the longest lazy rivers in the Midwest, where tropical scenery and gentle waterfalls offer the ultimate island escape.

  • Lost Soul Falls

    Test your courage on a pair of near-vertical speed slides where you free-fall at 28 feet per second for the ultimate adrenaline rush.

  • Island Pass

    Experience both parks!

    Explore

FAQs

What are the park hours for the 2026 season?

For the 2026 season, the waterpark is scheduled to be open daily from June 5th through August 23rd. Standard operating hours typically are 10:30AM - 6:30PM, but it is always a good idea to check the official calendar for weather-related updates or special event closures.

Waterpark Hours & Events

How much does parking cost?

Parking is $10 per day for standard vehicles and a portion of every parking fee is donated to Make-A-Wish® Iowa.

Are life jackets and tubes provided?

Yes! Life jackets are provided free of charge on a first-come, first-served basis. Additionally, tubes are free and located in corrals near each applicable slide.

Are there height and weight restrictions for the slides?

Must be 48 inches tall to ride these rides: Molokini Crater, Tangerine Tempest, Polynesian Plunge & Somoan Splash, Lost Soul Falls

Must be at least 42 inches tall to ride with adult; over 48 inches to ride alone: Wailua Kupua, Kiwi Koaster, Emerald Adventure & Jade Rapids

Rides for all heights: Tá Katipo, Calypso Cascade, Blue Iguana Lagoon, Star Fish Cove, Tsunami Bay, Tahiti Village, Kailahi River

The following are weight restrictions for number of tube riders: single rider - 275lbs, double riders - 400lbs, quad riders - 700lbs