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Every Hot Spring

Casa Diablo Hot Springs and Geyser

Casa Diablo Hot Springs and Geyser is a geothermal spring in California. Water at the source is recorded at 199°F (93°C), hot enough to scald.

199°F93°C recorded at the source
Scalding at the source. Do not enter without a cooled, mixed pool.

Facts

Coordinates
37.6480, -118.9140 (Google Maps, OSM)
Source temperature
199°F (93°C)
Access
Unknown
Type
Unknown
Fee
Not recorded
Clothing optional
Not recorded
Nearest town
Not recorded
Data sources
NOAA NCEI. See sources

Map

Larger marker is Casa Diablo Hot Springs and Geyser; smaller markers are other springs within 50 miles.

Quick answers

How hot is Casa Diablo Hot Springs and Geyser?
The hottest recorded reading at the source is 199°F (93°C). That is the outlet temperature, not a pool temperature; water cools as it flows away from the source. Water this hot can cause serious burns, so test any pool by hand first.
Where is Casa Diablo Hot Springs and Geyser?
Casa Diablo Hot Springs and Geyser is in California, at coordinates 37.6480, -118.9140.
What other hot springs are near Casa Diablo Hot Springs and Geyser?
The closest listed springs, in straight-line distance, are Casa Diablo Hot Springs, under 1 mi; Chance Spring, 2 mi; and Hot Spring at 37.65, -118.88, 2 mi.

Before you go

  • Temperatures are measured at the source and can be far hotter than any soaking pool. Test with a hand before stepping in.
  • Access, fees, and road conditions change. Verify with the land manager or owner; "public" here reflects survey records, not a current right of entry.
  • Water in natural springs is untreated. Keep your head above water and avoid soaking with open wounds. Some springs carry Naegleria fowleri risk.
  • Pack out everything, including soap residue. Many springs have been closed because of trash and overcrowding.

Sources

Dataset last rebuilt October 11, 2026. Not yet checked on site by a person. Access, fee, clothing and closure details appear only when a source below states them. How this data is built.

Merged from

  1. NOAA NCEI Thermal Springs List (archived 2025): survey location and source temperature, public domain