Best Water Parks in Idaho (2026)
Idaho surprised me the first time I drove through it. I'd built my whole idea of water parks around flat Midwestern heat, and here was a state doing it against a backdrop of pine and granite. I worked the wave pool at Oceans of Fun in Kansas City as a teenager, and I've chased slides across a lot of states since, but Idaho is one of the few where the setting is half the reason to go.
The state splits into three pockets. Up north near Coeur d'Alene you get the big one, Silverwood, plus a couple of indoor parks that run year-round. Down in the southeast there's a state-run outdoor park at Lava Hot Springs and a genuinely cheap municipal park in Rexburg. And out west, the Boise metro has the region's largest outdoor water park.
Here's the quick table, then the honest rundown on each. Every price is what I could verify for 2026.
| Park | City | Type | Adult price |
|---|---|---|---|
| Silverwood Theme Park (Boulder Beach) | Athol | Outdoor | $47 |
| Raptor Reef | Hayden | Resort | $29.95 |
| Lava Hot Springs Waterpark | Lava Hot Springs | Outdoor | $12 weekday |
| Rexburg Rapids | Rexburg | Outdoor | $8 |
| Roaring Springs | Meridian | Outdoor | Varies |
| Silver Rapids at Silver Mountain | Kellogg | Indoor | Varies |
Silverwood Theme Park and Boulder Beach, Athol
This is the headliner, and it's the reason a lot of families point their summer at north Idaho. Silverwood Theme Park in Athol sits about 30 minutes north of Coeur d'Alene, and the thing I most want you to understand about it is the ticket. One admission covers both the theme park and Boulder Beach, the water park. There is no separate water-park ticket to buy. You get roller coasters and slides on the same wristband.
The summer online rate is $47 for ages 8 to 64, with youth 3 to 7 and seniors 65 and up at $26. Spring and fall run lower, and Silverwood layers in seasonal events like Scarywood in October. It runs daily through summer and shifts to weekends in spring and fall.
:::tip{title="One ticket, two parks"}
Because Boulder Beach is included with Silverwood admission, the real value move is treating it as a two-in-one day, not a water-park-only trip. Ride coasters in the cooler morning, move to the water in the afternoon heat. Buy the ticket online in advance at silverwoodthemepark.com for the rate above.
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Raptor Reef, Hayden
Raptor Reef is the indoor water park inside Triple Play Family Fun Park in Hayden, which puts it just north of Coeur d'Alene, not down in the Boise area where it sometimes gets mislisted. Because it's indoor, it runs year-round, and that's its whole appeal in a state with real winters.
Water park general admission is $29.95 for guests 42 inches and over, and $22.95 for anyone under 42 inches. There's an evening pass from 6 p.m. to close at $19.95 and $16.95, and an all-day combo that bundles the water park with the rest of Triple Play at $74.95. Hours shift week to week, so check before you go. For a family that wants slides plus arcade and go-karts under one roof on a cold or rainy day, the combo is the one to look at.
Lava Hot Springs Waterpark
This is a personal favorite in concept. Lava Hot Springs Waterpark is the outdoor slide complex at the state-run Lava Hot Springs Olympic Swimming Complex in southeast Idaho, and it's separate from the famous hot pools in the same town, which are priced on their own and run year-round.
The pricing rewards weekdays. On a weekday it's $12 for ages 12 and up, $10 for ages 3 to 11, $3 for 2 and under, and a twilight rate of $6 from 6 p.m. to close. Weekends and holidays step up to $15 for 12 and up and $12 for ages 3 to 11. The 2026 main season runs May 22 through September 7. If you're already routing through southeast Idaho, pairing the slides in the afternoon with the mineral pools in the evening makes a full, unusual day. Details are at lavahotsprings.com.
Rexburg Rapids
Rexburg Rapids is the municipal outdoor park in Rexburg, and it's the value champion of this whole guide. Standard daily admission is a flat $8 for ages 3 to 59, seniors and military are $5, and kids 0 to 2 get in free with a swim diaper. There's no upsell tier hiding behind that number.
It's not going to out-slide Silverwood, and it isn't trying to. What it is: a clean, well-run community park where a family of four can have a genuine summer afternoon for the price of a couple of fast-food combos. For locals in eastern Idaho, this is the easy repeat trip all summer.
Roaring Springs, Meridian
Out in the Boise metro, Roaring Springs in Meridian is the largest outdoor water park in the region. It brands itself as Boise, though it physically sits in the Meridian suburb, and it's confirmed operating for 2026.
I want to be straight with you on price. The official site is a JavaScript app that doesn't expose current pricing to the tools I verify with, so rather than post a number I can't stand behind, I've left the adult price as varies. Check the live rate directly at roaringsprings.com before you plan your spend. For a Boise-area family, this is still the default full-scale outdoor option, so it belongs on your list even with the pricing asterisk.
Silver Rapids at Silver Mountain, Kellogg
Silver Rapids is the indoor water park at Silver Mountain Resort in Kellogg, up in the Panhandle. Our directory also carries it under the Silver Mountain Resort listing, since the two are the same place. It's open most of the year with seasonal hours, which makes it the north Idaho pick when the weather won't cooperate.
Here's the important operational detail. Silver Rapids does not sell walk-up tickets. A limited number of individual day tickets have to be booked online or by phone in advance, and access is often bundled with lodging. The published day price isn't listed, so I'm not going to invent one.
:::warning
Two Idaho parks need a call before you commit. Roaring Springs doesn't publish pricing in a form I can verify, and Silver Rapids sells no walk-ups. For Silver Rapids, the surest route is a Splash and Stay lodging package, which has run from around $57 per person per night and includes two days of water park access, or call 208-784-1930 for individual day-ticket availability.
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Picking your Idaho park
Geography does most of the deciding here.
- North Idaho, want it all: Silverwood in Athol, coasters and Boulder Beach on one ticket.
- North Idaho, off-season or rainy: Raptor Reef in Hayden or Silver Rapids in Kellogg, both indoor.
- Southeast Idaho: Lava Hot Springs for the slide-plus-hot-pool combo, or Rexburg Rapids for the $8 family day.
- Boise metro: Roaring Springs, the region's biggest outdoor park.
:::key
Idaho punches above its size for water in 2026. Silverwood gives you a true destination park where the water is included, two indoor parks cover the calendar's cold edges, and southeast Idaho has some of the cheapest good water days anywhere, starting at $8 in Rexburg. Prices were verified for the 2026 season, but two parks, Roaring Springs and Silver Rapids, need a direct check before you buy.
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Brian Williams
Brian has been passionate about water parks since childhood and worked at one as a teenager. He founded Water Parks World to help families find the best water park experiences across America.
