H2Oasis Indoor Waterpark, Indoor water park in Anchorage, United States

H2Oasis Indoor Waterpark is an indoor water park in Anchorage featuring multiple pool areas and water attractions. The facility includes a wave pool, a long lazy river channel, and several water slide varieties.

The facility opened in 2003 as Alaska's first indoor aquatic recreation center and was built to meet a community need. Its creation addressed the demand for year-round water activities in a region with long, cold seasons.

This facility serves as a social gathering place where local families spend time together during the long winter season when outdoor water activities are impossible. Visitors come here to enjoy water recreation and connect with others in their community.

The water is kept around 84 °F (27 °C), so the pools stay warm even when it is cold outside. The Master Blaster reaches 43 ft (13 m) and the wave pool produces 3–4 ft waves, so weaker swimmers should stay in the shallower areas. The lazy river encircles the park and serves as an easy route between the attractions.

The Master Blaster watercoaster stands 43 feet (13 m) high and runs 505 feet (154 m) long, making it the tallest and longest ride in the park. The wave pool produces 3 to 4 foot waves, and the water is held around 84 °F (27 °C).