Collier Memorial State Park, Williamson River
River · Oregon
ℹ️ Community-reported spot. Details below are compiled from public sources and are reported to be accurate — always verify locally before visiting.
About this swimming hole
A state park on the spring-fed Williamson River known for its large springs, campground and riverside picnic areas. The river's constant spring flow keeps it swimmable and clear, with the headwater springs themselves too cold for more than a dare-dip.
Good to know
| Water type | River |
|---|---|
| Water temperature | 55-60 in summer |
| Best season | July-September |
| Fees | Oregon State Parks day-use fee |
| Reservations required | No |
| Hours | daylight hours |
| Parking | day-use and campground lots |
| Amenities | restrooms, picnic areas, campground |
| County | Klamath County |
| Nearest town | Chiloquin |
| Safety notes | no lifeguard; spring water is very cold |
Map
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Frequently asked questions
Does Collier Memorial State Park, Williamson River require reservations?
No reservations are required at Collier Memorial State Park, Williamson River based on current information — but verify before you go.
Is there a fee to visit Collier Memorial State Park, Williamson River?
Reported fee info: Oregon State Parks day-use fee. Fees can change — confirm with the official link.
When is the best time to visit Collier Memorial State Park, Williamson River?
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