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Every Hot Spring

Napa Rock Soda Spring, Phillips Sod

Napa Rock Soda Spring, Phillips Sod is a geothermal spring in California. Water at the source is recorded at 78°F (26°C).

78°F26°C recorded at the source
Warm: pleasant on a hot day, cool in winter.

Facts

Coordinates
38.5190, -122.2600 (Google Maps, OSM)
Source temperature
78°F (26°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 Napa Rock Soda Spring, Phillips Sod; smaller markers are other springs within 50 miles.

Quick answers

How hot is Napa Rock Soda Spring, Phillips Sod?
The hottest recorded reading at the source is 78°F (26°C). That is the outlet temperature, not a pool temperature; water cools as it flows away from the source.
Where is Napa Rock Soda Spring, Phillips Sod?
Napa Rock Soda Spring, Phillips Sod is in California, at coordinates 38.5190, -122.2600.
What other hot springs are near Napa Rock Soda Spring, Phillips Sod?
The closest listed springs, in straight-line distance, are Napa Vichy Springs, 12 mi; White Sulphur Springs, 12 mi; and St Helena White Sulphur Spring, 13 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