When the summer heat hits, there’s no better escape than diving into thrilling water slides, lazy rivers, and massive wave pools. The United States is home to some of the most exciting and expansive water parks in the world. If you’re searching for the biggest water park in the US or planning a fun-filled vacation, this guide is for you.
We’ve compiled a list of the top 10 biggest water parks in the United States that offer endless aquatic adventure for the entire family. From indoor giants to sprawling outdoor complexes, these parks define what it means to be the biggest waterpark in the USA.
1. Noah’s Ark Waterpark – Wisconsin Dells, Wisconsin
Noah’s Ark Waterpark proudly holds the title of the biggest waterpark in the US. Located in the “Waterpark Capital of the World,” Wisconsin Dells, it spans over 70 acres and boasts more than 50 water rides and attractions. Highlights include the Black Anaconda (one of the longest water coasters in the country), two giant wave pools, and thrilling slides like Scorpion’s Tail. With family play areas and adventure zones, it’s the ultimate destination for water enthusiasts looking for the biggest water park in the USA.
2. Kalahari Resorts – Pocono Mountains, Pennsylvania
Kalahari Resorts in Pennsylvania is the biggest indoor waterpark in the United States, covering 220,000 square feet under one roof. As one of the most innovative and immersive parks, it features surfing simulators, a lazy river, raft rides, and kiddie areas. Its African-themed decor and all-season access make it a top pick for year-round fun. Kalahari also has locations in Ohio, Texas, and Wisconsin, each massive in its own right.
3. DreamWorks Water Park – East Rutherford, New Jersey
Part of the American Dream mega mall, DreamWorks Water Park is not only one of the biggest water parks in the United States but also among the most luxurious. It features the largest indoor wave pool in North America and dozens of DreamWorks-themed attractions, including rides inspired by Shrek, Kung Fu Panda, and Madagascar. It holds multiple world records and is considered by many to be the biggest waterpark in the US when combining its volume and indoor facilities.
4. Schlitterbahn Waterpark – New Braunfels, Texas
Schlitterbahn in Texas is famous for blending natural river water with thrilling man-made attractions. Spread across over 70 acres, it offers over 50 rides, including tube chutes, uphill water coasters, and a massive lazy river system. Known for its innovative “transportainment” concept, guests can float from one ride to another without leaving their tube. It’s often regarded as one of the biggest waterparks in the United States for its sheer size and unique experience.
5. Wilderness Territory – Wisconsin Dells, Wisconsin
Another gem in Wisconsin Dells, Wilderness Territory is North America’s largest combined indoor and outdoor water park resort. It features four indoor and four outdoor water parks, with over 500,000 square feet of water fun. From the country’s largest indoor wave pool to the Wild WaterDome, it’s a haven for thrill seekers and families. The resort experience adds to its appeal, marking it as one of the biggest waterparks in the USA.
6. Disney’s Typhoon Lagoon – Orlando, Florida
Disney’s Typhoon Lagoon is one of Orlando’s premier water parks and a standout among the biggest water parks in the United States. With a 2.5-acre wave pool producing up to 6-foot swells and a lush tropical setting, it feels like a storm-tossed paradise. Attractions like Crush ‘n’ Gusher water coasters and Miss Adventure Falls offer both adrenaline and charm, making this park an unforgettable part of any Florida vacation.
7. Aquatica Orlando – Orlando, Florida
Operated by SeaWorld, Aquatica combines high-speed thrills with marine life-themed attractions. Known for its innovative slides like Dolphin Plunge and the KareKare Curl, the park spans 59 acres and continues expanding. It offers sandy beaches, wave pools, and interactive water play areas, making it one of the biggest water parks in the USA and a must-visit for Orlando visitors.
8. Volcano Bay – Orlando, Florida
Universal’s Volcano Bay is an immersive, high-tech water park anchored by the 200-foot Krakatau volcano. Spanning 27 acres, it features state-of-the-art attractions like the Ko’okiri Body Plunge, one of the tallest body slides in the U.S. With virtual line reservations using TapuTapu bands and tropical theming throughout, it redefines the guest experience. It’s not the largest by acreage, but its innovation earns it a spot among the biggest waterparks in the United States.
9. Water World – Federal Heights, Colorado
Water World near Denver covers over 70 acres, making it one of the biggest water parks in the United States by area. It features over 50 attractions including raft rides, tube slides, family rides, and one of the world’s first water park dark rides. The variety and size of Water World make it a key player among the biggest waterparks US options for thrill-seekers and families alike.
10. Splashin’ Safari – Santa Claus, Indiana
Located in the quirky town of Santa Claus, Splashin’ Safari is part of Holiday World and is often listed among the biggest waterparks in the US. Known for record-setting water coasters like Mammoth and Wildebeest (two of the longest in the world), this 40-acre park offers a unique blend of classic fun and modern marvels. It consistently ranks high for cleanliness and family-friendliness.
FAQs – Biggest Water Parks in the USA
Q1. What is the biggest water park in the United States?
A1. Noah’s Ark Waterpark in Wisconsin Dells is widely considered the biggest water park in the US by outdoor area and attractions.
Q2. Which is the largest indoor water park in the United States?
A2. Kalahari Resorts in the Pocono Mountains, Pennsylvania, is the biggest indoor waterpark in the United States, with 220,000 square feet of indoor water fun.
Q3. Are there any year-round water parks in the USA?
A3. Yes, indoor water parks like DreamWorks Water Park and Kalahari Resorts are open year-round and climate-controlled.
Q4. What water park has the longest water coaster?
A4. Splashin’ Safari in Indiana is home to Mammoth and Wildebeest, two of the world’s longest water coasters.
Q5. Which city has the most water parks?
A5. Wisconsin Dells, Wisconsin, is known as the “Waterpark Capital of the World” and hosts multiple of the biggest water parks US wide.
Final Thoughts: Whether you’re planning a family vacation, a weekend adventure, or a cross-country road trip, visiting one of the biggest waterparks in the United States guarantees excitement and memories that last a lifetime. From the massive indoor realms of Kalahari and DreamWorks to the sprawling outdoor landscapes of Noah’s Ark and Schlitterbahn, these parks showcase the best of American water attractions. If you’re searching for the biggest water park in the USA, these destinations deliver on scale, thrill, and pure aquatic fun.
For more amazing rankings and U.S. travel guides, be sure to check out our curated lists at USATop-10
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