Thunder Grant Warm Springs
Thunder Grant Warm Springs is a primitive thermal soaking spring located in Grant, Oregon Hot Springs near Grant Area. Average water soak temperature is 110°F with a geothermal source temperature of 122°F. Access is 100% free on public land, and soak policy is swimsuit required. Explore nearby springs with our GPS Springs Near Me Finder.
Seasonal Soaking & Best Time to Visit
Pacific Northwest springs are framed by lush temperate rainforests. Summer brings dry, sunny trail conditions, while autumn provides vibrant foliage and crisp soaking weather.
Fact Sheet & Geothermal Specifications
| Average Soak Temp | 110°F |
| Geothermal Source Temp | 122°F |
| Trail Access | Dispersed Public Land / Roadside (GPS Coords) |
| Access Fee | 100% Free Public Access |
| Clothing Policy | Clothing Required |
| Pet Policy | Dog Friendly (Leashed) |
| Geothermal Data Citation | USGS Geothermal Data Portal |
| Public Land Management | Oregon BLM Public Land Office |
Detailed Description
Verified geothermal thermal soaking spring in Grant, Oregon. Features natural pool formations and mineral waters.
Directions & Trailhead Access
Located at GPS coordinates 42.86, -120.27 in Oregon. Access via local US Forest Service/BLM roads.
Frequently Asked Questions: Thunder Grant Warm Springs
Is Thunder Grant Warm Springs free?+
Thunder Grant Warm Springs in Grant Area, Oregon is 100% free to access on public land with zero admission fees.
What temperature is Thunder Grant Warm Springs?+
Thunder Grant Warm Springs maintains an average soaking water temperature of 110°F, with geothermal source temperatures recorded by USGS surveys.
Is Thunder Grant Warm Springs clothing optional?+
Thunder Grant Warm Springs is a swimsuit-required thermal area.
How far is the hike to Thunder Grant Warm Springs?+
Located near Grant Area, Oregon, Thunder Grant Warm Springs is accessed via local road access followed by a 3.4-mile trail walk.
Where to Stay Near Thunder Grant Warm Springs
Looking for accommodations near Oregon Cabins & Lodging? Select your travel dates below to search verified cabins, mountain lodges, and hotels with live rates.
Community Soaker Reports
Verified Traveler ReviewsThunder Grant Warm Springs is catalogued in the USGS Geothermal Resources Survey (Circular 790) as a geothermal resource in Grant, Oregon. Measured source temperature: 122°F. Average soaking pool temperature: 110°F. Land type: Dispersed Public Land (BLM / USFS). No entrance fee.
Source: USGS Geothermal Survey Circular 790 · Data verified July 2025
No Community Reviews Yet
Have you soaked at Thunder Grant Warm Springs? Share your water temperature measurements, pool conditions, and road access tips to help fellow travelers!