Boulder Beach Water Park

About this park

The published 2026 season ended September 7, 2026. Check the official calendar for the next season. Water park inside Silverwood Theme Park in Athol, Idaho, with slides, a lazy river and cabanas. One Silverwood ticket covers both parks; the water park runs on a shorter summer schedule.

Visitor information

Park type

Water park at a theme park · Silverwood Theme ParkWater-park entry is included with the parent park’s admission, according to the park.

Park setting

Setting not recorded

Day visits and access

Day tickets for the publicThe park offers day admission to visitors who are not hotel guests. Availability can vary by date.

Last published admission (2026 season, now over)

Included with Silverwood ticketAdmission covers Silverwood Theme Park and Boulder Beach when both are open; Boulder Beach is not sold separately. Silverwood season passes also include it. Prices checked September 30, 2026.

Published 2026 season (over)

September 2026 calendar: Boulder Beach open 11am to 7pm through Monday, September 7, 2026, then shown closed on the remaining September dates.Exact daily hours and exceptions are on the park’s official calendar.

Address

27843 N. Hwy 95, Athol, ID 83801Street address as published by the park.

Phone

(208) 683-3400

Attractions named by the park

Lazy river, Water slides, CabanasIndividual rides have their own height, weight and supervision rules.

Park rules published by the park

Lockers

Lockers are rented at Boulder Beach Lockers; tubes for the lazy river can also be rented there.

Outside food and drink

A soft-sided cooler up to 12x12x12 inches with snacks or a personal lunch and factory-sealed non-alcoholic drinks are allowed.

Swimwear

Swimwear must be modest; no thongs, exposed zippers, buckles, denim or rivets. Diaper-aged children need swim diapers.

Ages, heights and supervision

All children must be accompanied by an adult in pool areas.