This list ranks operating water parks by their own physical footprint in acres — the land the slides, pools, and lazy rivers actually sit on, not a surrounding resort, hotel complex, or theme-park campus bundled in next door. Figures come from each park’s own site, Wikipedia infoboxes backed by citations, or operator and tourism-board coverage; a few combined water-and-dry-ride resorts (including some marketed as ‘world’s largest’) were left out because their published acreage mixes in non-water space or couldn’t be pinned to a single sourced number.
Calypso Waterpark in Limoges, Ontario, Canada leads at 100 acres, a figure confirmed by its own Wikipedia infobox and consistently described in Canadian press as the country’s largest waterpark. Splish Splash in Calverton, New York follows at 96 acres, a figure that traces back to two independent newspaper citations on its Wikipedia page rather than a single marketing claim. Chimelong Water Park in Guangzhou, China comes in third at roughly 74 acres (over 300,000 square meters), ahead of a three-way tie at 70 acres among American outdoor parks: Schlitterbahn New Braunfels, Noah’s Ark Waterpark, and Water World in Colorado. H2OBX Waterpark in Powells Point, North Carolina sits on an 80-acre site that’s widely repeated in press coverage, but its developed, ride-covered footprint has been reported at closer to 26 acres — the figure this list uses, which places it well down the ranking rather than near the top.
The Full Ranking
Figures below are each park’s current operating footprint in acres, with the hectare equivalent alongside; data was checked against the sources listed at the end of this page.
| # | Water Park | Location | Size |
|---|---|---|---|
| 1 | Calypso Waterpark | Limoges, Ontario, Canada | 100 acres (40.5 ha) |
| 2 | Splish Splash | Calverton, New York, USA | 96 acres (38.9 ha) |
| 3 | Chimelong Water Park | Panyu District, Guangzhou, China | ~74 acres (30 ha) |
| 4 | Schlitterbahn New Braunfels | New Braunfels, Texas, USA | 70+ acres (28.3+ ha) |
| 5 | Noah’s Ark Waterpark | Lake Delton, Wisconsin, USA | 70 acres (28.3 ha) |
| 6 | Water World | Federal Heights, Colorado, USA | 70 acres (28.3 ha) |
| 7 | Blizzard Beach | Bay Lake, Florida, USA | 66 acres (26.7 ha) |
| 8 | Aquatica Orlando | Orlando, Florida, USA | 59 acres (23.9 ha) |
| 9 | Typhoon Lagoon | Bay Lake, Florida, USA | 56 acres (22.7 ha) |
| 10 | Aquaventure Waterpark | Dubai, United Arab Emirates | 55.6 acres (22.5 ha) |
| 11 | Siam Park | Costa Adeje, Tenerife, Spain | 46 acres (18.5 ha) |
| 12 | Yas Waterworld | Yas Island, Abu Dhabi, UAE | ~40 acres (16.3 ha), combined estimate |
| 13 | Caribbean Bay | Yongin, South Korea | 37.6 acres (15.2 ha) |
| 14 | Volcano Bay | Orlando, Florida, USA | 27 acres (10.9 ha) |
| 15 | H2OBX Waterpark | Powells Point, North Carolina, USA | 26 acres (10.5 ha), developed footprint |
| 16 | Desaru Coast Adventure Waterpark | Desaru, Johor, Malaysia | 21 acres (8.5 ha) |
| 17 | Beach Park (aquatic park) | Porto das Dunas, Aquiraz, Brazil | 8.6 acres (3.5 ha) |
Calypso, Splish Splash, and Chimelong at the Top
Calypso Waterpark opened in 2010 in Limoges, Ontario, about 35 kilometers east of Ottawa, and has been described as Canada’s largest waterpark ever since; its own Wikipedia infobox and operator coverage put its footprint at 100 acres, enough to lead this entire list. Splish Splash opened in 1991 on eastern Long Island and has grown to 96 acres, a figure documented in New York Times and New York Daily News coverage rather than a single operator press release. Chimelong Water Park, part of the Guangzhou Chimelong Tourist Resort in Panyu District, opened in 2007 and has since expanded; tourism-board and travel-industry sources now consistently describe it as covering more than 300,000 square meters, or roughly 74 acres, putting it a clear third behind Calypso and Splish Splash.
Schlitterbahn New Braunfels, Noah’s Ark Waterpark, and Water World in Colorado each publish acreage right around 70 acres. Schlitterbahn is split across two tram-linked campuses on the Comal River and is described as ‘over 70 acres’; Noah’s Ark and Water World both list exactly 70 acres in their own infobox-level figures. None of the three publishes a precise, audited number down to a tenth of an acre, so the honest read is a three-way tie for fourth rather than a strict order among them.
How the Measure Works, and Where Claims Get Disputed
Acreage looks like a simple number but gets murky fast, and H2OBX is the clearest example on this list. Press coverage since the park’s 2017 opening has repeated an 80-acre figure, but that describes the full site along US 158 in Powells Point, North Carolina, not the developed, ride-covered area. Pre-opening coverage described a roughly 30-acre first phase, and reporting on the built-out park has put the developed footprint closer to 26 acres, with the rest of the 80-to-95-acre parcel held as undeveloped land for future phases that haven’t been built. This list ranks H2OBX by that 26-acre developed footprint rather than the oft-repeated site-wide figure, which is why it lands well down the list instead of near the top.
Chimelong Water Park has a similar gap: its own operator site does not publish a standalone area figure at all, and the roughly 74-acre (300,000+ square meter) number comes from tourism-industry and travel-press coverage rather than a park press release. At least one Guangdong government-linked news portal instead cites 450 acres for the same park, attributing the number to an older industry report — a figure that lines up almost exactly with 450 mu (a Chinese land-area unit, not an acre), suggesting a unit mix-up rather than a genuine sixfold difference in size. This list uses the more conservative, more widely corroborated ~74-acre figure, but readers should treat Chimelong’s exact ranking as less certain than the others on this page.
Yas Waterworld in Abu Dhabi is a different kind of gray area: no operator has published one updated total for the park since its 2025 expansion. Wikipedia documents the pre-expansion footprint at 15 hectares (37 acres), and Miral’s own July 2025 release puts the ‘Lost City’ expansion that opened that month at 13,455 square meters (about 3.3 acres). Adding those two sourced numbers gives roughly 16.3 hectares (40 acres), which is how this list ranks Yas Waterworld; treat that total as a reasoned combination of two real figures, not an official park-wide number.
Disney’s own figures for Typhoon Lagoon also vary by source — 56 acres per Disney’s D23 archive, but 61 or 62 acres in some tourism write-ups — likely depending on whether parking and retention ponds are included; this list uses the lower, park-specific figure. Atlantis The Palm markets Aquaventure Waterpark in Dubai as the ‘world’s largest waterpark’ after a 2021 expansion that grew it to 22.5 hectares (55.6 acres). By acreage alone, that claim doesn’t hold up against the nine water parks ranked above it on this list — Aquaventure’s marketing title appears to rest on ride count or water volume rather than land area.
Notable Entries and Planning Notes
Beach Park in Brazil is famous and heavily visited, but its aquatic park proper covers just about 35,000 square meters (8.6 acres) — small next to the others here — because the wider, often-cited 170,000-square-meter figure for ‘Beach Park’ includes the resort’s hotels and beachfront, not just the water rides. Caribbean Bay in South Korea and Desaru Coast Adventure Waterpark in Malaysia are each the largest water park in their own country, yet both still fall in the 20-to-40-acre range — a reminder that ‘biggest in the country’ and ‘biggest in the world’ are different claims.
For trip planning, acreage is a rough guide to how much walking and how many hours a visit takes, but H2OBX is a reminder to check what a published figure actually measures: its 26-acre ranked footprint is the developed area with rides, while the 80-acre figure in most press coverage includes undeveloped land held for future phases. Indoor water parks, such as those built into malls or resort hotels, aren’t included here because their size is usually reported in square feet of enclosed space rather than acres, which isn’t a fair comparison against open-air park land. Aquatica Orlando’s 59-acre figure is sometimes confused with its sister park next door, SeaWorld Orlando, which covers about 200 acres (81 hectares); the two are separately gated parks and should not be conflated when comparing sizes.
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Largest Water Parks in the World by Acreage FAQs
What is the largest water park in the world by acreage?
Calypso Waterpark in Limoges, Ontario, Canada is the largest at 100 acres, a figure confirmed by its own Wikipedia infobox and consistently described in Canadian press as the country’s largest waterpark. Splish Splash in Calverton, New York follows at 96 acres, a figure backed by New York Times and New York Daily News coverage on its Wikipedia page.
How big is Calypso Waterpark in Ontario, Canada?
Calypso Waterpark, in Limoges, Ontario about 35 kilometers east of Ottawa, covers 100 acres according to its own Wikipedia infobox. That makes it both Canada’s largest waterpark and, by acreage, the single largest water park on this list, ahead of Splish Splash in New York.
How big is H2OBX Waterpark in North Carolina?
H2OBX Waterpark in Powells Point, North Carolina sits on an 80-acre site, a figure repeated across most press coverage since it opened in 2017 — but that’s the full parcel, not the water park itself. The developed area with slides and pools has been reported at closer to 26 acres, which is the figure this list uses to rank it; the rest of the site is undeveloped land held for potential future phases.
How big is Chimelong Water Park really?
Chimelong Water Park in Guangzhou, China does not publish a standalone acreage figure on its own site. Travel-industry and tourism sources most consistently describe it as covering more than 300,000 square meters, or roughly 74 acres, though at least one government-linked news portal cites a much larger 450-acre figure for the same park, which appears to stem from confusing the Chinese land unit mu with acres.
Which water parks are tied for fourth place by size?
Schlitterbahn New Braunfels in Texas, Noah’s Ark Waterpark in Wisconsin, and Water World in Colorado each publish a figure right around 70 acres, close enough that none can be called a clear leader over the others.
Is Aquaventure at Atlantis The Palm really the world’s largest water park?
That is Atlantis’s own marketing claim. By land area, Aquaventure covers 22.5 hectares (about 55.6 acres), which ranks tenth on this list; the ‘world’s largest’ title appears to be based on ride count or water volume rather than acreage.
How big is Aquatica Orlando, and is it really 81 acres?
No. Aquatica Orlando covers 59 acres, a figure confirmed by Wikipedia (citing the St. Petersburg Times), the park’s own design firm Water Technology Inc., and multiple tourism sources. The 81-acre figure sometimes seen likely confuses it with the adjacent SeaWorld Orlando, which covers roughly 200 acres, or 81 hectares — a different park and a different unit.
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