NATIONAL WATERPARK DAY

History of NATIONAL WATERPARK DAY

Since their introduction in the late 1940s and early 1950s, waterparks have grown immensely in popularity. The United States has been recorded to have the largest and most concentrated waterpark market in the world. More than 1,000 water parks already exist with multiple new parks opening each year in the U.S.

The waterslide was first seen in New Zealand during a display at their International Exhibition in 1906. Ever since, waterslides have quickly evolved, especially in the 1970s. They were built to accommodate larger numbers of people as their love for them grew. In line with the excitement of the public, they were developed to be taller and faster.

Thrill-seekers took to wave pools and rough water rides, while lazy rivers were popular among those who just wanted to chill out. Major organizations involved in the management of waterparks are the International Association of Amusement Parks and Attractions (I.A.A.P.A.) and the World Waterpark Association (W.W.A.), which is the trade association of the industry.

After the innovations and observations of how people loved the waterslides, National Waterpark Day was then founded by Kalahari Resorts and Conventions on July 28, 2017. Travis Nelson, spokesperson for Kalahari Resorts and Conventions once said that “Visiting a waterpark is a quintessential summer experience.” And we agree — a summer without being in the water is one not enjoyed to the fullest.

Travis also commented that Kalahari Resorts founded National Waterpark Day to commemorate the fun and lingering memories families are sure to create at their waterparks every summer. Today, waterparks are found all over the globe. They provide fun for the whole family and many serve as resort destinations.

NATIONAL WATERPARK DAY timeline

2000s

Too Many People

Efforts are made to reduce long waiting lines at waterparks by introducing conveyor belts to lift passengers or using water jets.

1994

The U.S. Gets a Taste

The United States gets its first indoor waterpark.

1977

The Inaugural Indoor Waterpark

The world’s first indoor waterpark is built-in Alpamare, Switzerland.

1923

The Early Form of Aqua Rides

Herbert Sellner designs a ride with water toboggans that would slide down large inclines and skim across bodies of water.

NATIONAL WATERPARK DAY FAQs

When is National Waterpark Day?

National Waterpark Day 2026 falls on Tuesday, July 28, inviting everyone to enjoy a refreshing escape from the summer heat. It’s the perfect mid-week opportunity to hit the slides!

How many waterparks are there in the U.S.?

As of recent estimates, there are approximately 1,000 waterparks operating across the United States, ranging from large outdoor parks to indoor resorts. This vast number ensures that most Americans are within driving distance of a refreshing aquatic experience.

What is the largest waterpark in the U.S.?

The largest outdoor waterpark in the U.S. is Noah’s Ark Waterpark in Wisconsin Dells, spanning 70 acres with dozens of slides and two wave pools. For indoor options, the largest is usually cited as Kalahari Resorts & Conventions in Sandusky, Ohio.

What makes a waterpark different from a swimming pool?

While both involve water, a waterpark offers a wide array of specialized attractions like waterslides, wave pools, lazy rivers, and splash pads, designed for entertainment and thrill. A swimming pool, by contrast, is primarily for swimming, lounging, or basic recreation.

NATIONAL WATERPARK DAY Activities

Visit a waterpark

It would be a crime to miss the main point of this day without good reason. Cool down at your local waterpark or travel across the country to a major water attraction for the ultimate summer fun.

Share on social

Good things are better when shared. Let your friends know about this day by posting about it on social media. Don’t forget to use the hashtag #NationalWaterparkDay.

Stay safe in the sun

We’re all excited to see the sun again during summer, but don’t forget that its U.V. rays are powerful. Use sunscreen and wear a hat while you’re not in the water.

5 Fun Facts About Waterparks And Waterslides

Canada pioneers indoor waterparks

North America’s first indoor waterpark was built in Canada and named World Waterpark in Edmonton, Alberta.

The largest indoor waterpark

Kalahari Resorts in Wisconsin is the biggest indoor waterpark, measuring 125,000 square feet.

An abandoned waterpark

Disney World has an abandoned waterpark that is slowly being salvaged by nature.

A deadly waterslide

Schlitterbahn Waterpark in Kansas City was home to what used to be the tallest waterslide, which was 168 feet high, but was shut down when a 10-year-old rider died using the waterslide.

Waterpark H.Q.

Wisconsin Dells calls itself the waterpark capital of the world as it possesses over 20 waterparks.

Why We Love NATIONAL WATERPARK DAY

It keeps us cool

Summer heat can get unbearable. Being in the water is a sure bet for keeping ourselves cool.

It’s family-friendly

Going to a waterpark is something that parents can safely enjoy with their kids. And the family memories from such moments are priceless.

It’s healthy fun

Being in the sun gives us vitamin D, and we get a burst of ‘feel-good’ hormones: endorphins, dopamine, and adrenaline. Way to stay healthy while having fun!