Thunder San Bernardino Geothermal Springs
Thunder San Bernardino Geothermal Springs is a primitive thermal soaking spring located in San Bernardino, California Hot Springs near San Bernardino Area. Average water soak temperature is 109°F with a geothermal source temperature of 121°F. Access is 100% free on public land, and soak policy is swimsuit required. Explore nearby springs with our GPS Springs Near Me Finder.
Fact Sheet & Geothermal Specifications
| Average Soak Temp | 109°F |
| Geothermal Source Temp | 121°F |
| Hiking Distance | 2.2 miles (moderate) |
| 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 | California BLM Public Land Office |
Detailed Description
Verified geothermal thermal soaking spring in San Bernardino, California. Features natural pool formations and mineral waters.
Directions & Trailhead Access
Located at GPS coordinates 37.02, -118.39 in California. Access via local US Forest Service/BLM roads.
Frequently Asked Questions: Thunder San Bernardino Geothermal Springs
Is Thunder San Bernardino Geothermal Springs free?+
Thunder San Bernardino Geothermal Springs in San Bernardino Area, California is 100% free to access on public land with zero admission fees.
What temperature is Thunder San Bernardino Geothermal Springs?+
Thunder San Bernardino Geothermal Springs maintains an average soaking water temperature of 109°F, with geothermal source temperatures recorded by USGS surveys.
Is Thunder San Bernardino Geothermal Springs clothing optional?+
Thunder San Bernardino Geothermal Springs is a swimsuit-required thermal area.
How far is the hike to Thunder San Bernardino Geothermal Springs?+
Located near San Bernardino Area, California, Thunder San Bernardino Geothermal Springs is accessed via local road access followed by a 2.2-mile trail walk.
Where to Stay Near Thunder San Bernardino Geothermal Springs
Top-rated cabins, mountain lodges, and hotels near California Cabins & Lodging with instant online booking.
Thunder San Bernardino Geothermal Springs Cabins & Spa Lodge
Mountain View Hotel (San Bernardino Area)
USGS Field Data & Community Soaker Reports
Official USGS Geothermal Survey Logs & Verified Traveler ReportsOfficial USGS geothermal survey record for Thunder San Bernardino Geothermal Springs in California. Source soak temperature verified at 109°F near San Bernardino Area. Public land access verified with zero entrance fee.
Wilderness access guide for Thunder San Bernardino Geothermal Springs: Leashed pets permitted in surrounding trail areas. Practice Leave No Trace principles and pack out all waste.