Rocky Brook Falls
Waterfall · Washington
About this swimming hole
Rocky Brook Falls is one of the tallest waterfalls on the Olympic Peninsula, fanning 200 feet over ledges into a large splash pool surrounded by boulders. A short, easy trail past a small hydroelectric building leads to the base. It was named Washington's best swimming hole by one national roundup — the setting is that pretty.
Good to know
| Water type | Waterfall |
|---|---|
| Water temperature | 50s in summer |
| Depth | large splash pool at the falls base |
| Best season | July-September |
| Fees | Free |
| Reservations required | No |
| Parking | trailhead pullout; short walk in |
| County | Mason County |
| Nearest town | Brinnon |
| Safety notes | no lifeguard; slippery rocks; cold water |
Map
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Frequently asked questions
Does Rocky Brook Falls require reservations?
No reservations are required at Rocky Brook Falls based on current information — but verify before you go.
Is there a fee to visit Rocky Brook Falls?
Reported fee info: Free. Fees can change — confirm with the official link.
When is the best time to visit Rocky Brook Falls?
The best season is typically July-September.
⚠️ Verify before you go. Conditions, fees, reservations, and access can change — confirm details with the official link before visiting. Last verified: September 2026