Terwilliger (Cougar) Hot Springs

Facility · Oregon ·

Managed by the USDA Forest Service

Willamette National Forest (NF) · Open Access

1,700 ft
Elevation
Terwilliger Hot Springs 2016-04-04
Photo: Kane5187, CC BY-SA 4.0, via Wikimedia Commons

As you walk the 1/4 mile trail to this clothing optional hot springs, you are enveloped in the dark hues of primeval woodland, touched by mottled light filtering down from treetops high above and the invigorating scene of the lagoon with the gorgeous Rider Creek waterfall spilling into it.

There are six soaking pools spaced apart by rock walls laid out in steps down a ravine. Temperatures range from 85 degrees in the lower pool to 112 degrees in the upper pool. The pools are 3-12 feet across and an average of 2-3 feet deep. The pool floors are mostly bedrock but some gravel, sand and debris remain at the bottom of the pool.

If you do visit this popular hot springs, please preserve the experience for you and for future visitors by observing the following: There is no alcohol allowed, the hot springs are for day use only and camping is restricted to developed campgrounds in the Cougar Recreation Area. 

Getting there

Road conditions may change rapidly and visitors should use extreme caution when traveling on Aufderheide Scenic Byway (Forest Road 19), especially in the winter. This road is not maintained for snow and ice and travel is at your own risk.

FROM HIGHWAY 126: From Blue River, OR, travel 4 miles east on Highway 126 to Aufderheide Scenic Byway (Forest Road 19). Continue on south Aufderheide Drive, taking a right at the Y to the top of Cougar Reservoir. Continue south on Aufderheide Drive for 5 miles to Terwilliger Hot Springs parking lot.

FROM HIGHWAY 58: Take Westfir Road across from the Middle Fork Ranger Station and turn left at the stop sign. Continue to the red covered bridge. Go past the bridge and the road becomes Aufderheide Drive (Forest Road 19). Continue on Aufderheide Scenic Byway for about 50 miles until you reach the Terwilliger Hot Springs parking lot.

44.08360, -122.23296 · 44°5'0.9"N 122°13'58.6"W

Directions (Google Maps) · Directions (Apple Maps)

Typical weather

Typically 89°F in Aug, down to 48°F in Dec.

JanFebMarAprMayJunJulAugSepOctNovDec
High °F495358647479898982685548
Low °F393941455055595854484339
Precip in13.07.59.88.24.32.70.70.61.95.811.012.1

1991–2020 averages from the nearest NOAA station, 3.3 mi away — not measured at the facility itself, and elevation can make a real difference over that distance.

Map

Member photos

Common questions about Terwilliger (Cougar) Hot Springs

Can you reserve a site at Terwilliger (Cougar) Hot Springs?
No. Terwilliger (Cougar) Hot Springs is not reservable through Recreation.gov, so sites are first-come, first-served or booked elsewhere.

Camping near Terwilliger (Cougar) Hot Springs

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Recreation.gov last updated this record on 2026-02-25.

Facility information and photographs from Recreation.gov (RIDB). SpotOpened is not affiliated with Recreation.gov or any federal agency.