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Ultimate Waterpark > Waterparks > Montana Water Parks > The Reef Indoor Water Park

The Reef Indoor Water Park

The largest indoor water park in the state of Montana. The Reef Water Park is as big as a football field and the climate controlled indoor facility has tube slides, body slides, wave pool, activity pools and a large hot tub that can be enjoyed year-round.

Climb up three stories to descend Barracuda Blaster single or double riders tube slide or Tropical Twister body slide. Ride the waves in the park's 55,000 gallon wave pool or frolic in the water activity pool with a basketball hoop and lily pad walk. For relaxing the park offers a 20-person hot tub with water heated to 103 degrees. For youngsters the parks has an interactive water play structure with slides, squirt guns, fountains and tunnels that is toped with a 250-gallon dumping bucket!

Amenities include plenty of seating, lounge chairs, party rooms, arcade and gift shop, plus a cafe serving food and beverages. The Reef is part of The Big Horn Resort.

More About The Reef Indoor Water Park

1801 Majestic Lane
Billings, MT 59102

(406) 839-9283

Park website:

  • Currently 3.33 / 5
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Rated: 3.3 out of 5 (3 votes)

Type of park:
Indoor Waterpark Resort

Opening year:
August 22, 2008

Operating season:
Reopened July 23, 2020. Open year-round. Operating days and hours vary by season.

Operating dates are subject to change. Always contact the park to verify days and hours before visiting.

Admission prices:
2020 Admission Rates

  • General Admission: $14.95
  • Child (under 48"): $12.95
  • Spectator: $5.00
Discounted admission offered to military and after 4:00 pm.

Directions & Location

Big Horn Resort and The Reef Indoor Water Park are located southwest of Billings off Interstate 90 at Highway 302.

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