Natural swimming hole
Alder Flats, North Santiam
River · Oregon
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 less-visited North Santiam swimming stretch east of Detroit that rewards drivers willing to pull over and explore. The same turquoise glacial water as the famous holes, minus the permit system and the lines.
Good to know
| Water type | River |
|---|---|
| Water temperature | 50-55 in summer |
| Best season | July-September |
| Fees | Free |
| Reservations required | No |
| Hours | daylight hours |
| Parking | pullouts along the highway |
| County | Marion County |
| Nearest town | Detroit |
| Safety notes | no lifeguard; cold swift river; unimproved access |
Map
Nearby swimming holes
Frequently asked questions
Can you swim in Alder Flats, North Santiam?
Yes — Alder Flats, North Santiam is listed as a natural swimming spot in Oregon. Reported water temperature: 50-55 in summer. Heads-up: no lifeguard; cold swift river; unimproved access. There are rarely lifeguards at natural swimming holes — verify conditions locally before you go.
Does Alder Flats, North Santiam require reservations?
No reservations are required at Alder Flats, North Santiam based on current information — but verify before you go.
Is there a fee to visit Alder Flats, North Santiam?
Reported fee info: Free. Fees can change — confirm with the official link.
When is the best time to visit Alder Flats, North Santiam?
The best season is typically July-September.