World Waterpark is a water park located at West Edmonton Mall in Edmonton, Alberta, Canada. Opened to the public in 1986, it is the largest indoor water park in North America. It has a maximum capacity of about 5,000 guests, an average air temperature of 31 °C (88 °F), and also contains the world's largest indoor wave pool with a capacity of 12.5 million litres.

The highest slides in the park are Twister and Cyclone, which are both 83 feet (25 m) high.

Blue Thunder wave pool

This wave pool has four active wave bays, each with 2 panels operated by a 1,500 horsepower (1,100 kW) hydraulic system (8 total active panels). For many years, the (4) panels in the two outer wave bays have been disabled, apparently due to the waves being far too intense, resulting in injuries; guests were being thrown into each other when all 12 panels were operating, as they were in the 1980s.

Waves are generated (in 10 minutes on, 5 minutes off sessions) of approximately 4 to 5 feet, utilizing only the 8 active wave panels. It is arguably the most popular attraction in the park, as many swimmers (most with yellow inner tubes) can be found bobbing in the water. The start of every session is marked with a loud air horn blast, warning swimmers to be ready for a wave to flip them over. Every now and then, the large crowd of people in the pool will jokingly scream after hearing the air horn, a common behavior among frequent users of the wavepool.[original research?]

Most evenings, after regular park business hours, the Blue Thunder wave pool is used by clubs for surfing, kayaking, and stand-up paddle boarding. For these activities, the waves are often programmed for increased intensity and continuous operation.

In September 2018, the water park underwent a $2.5 million renovation including repainting the Wavepool, renovated cabanas, additional bathrooms, new beach area flooring and upgraded signage.