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Every Hot Spring

Alkali Flats Warm Spring

Alkali Flats Warm Spring is a geothermal spring in Idaho. Water at the source is recorded at 93°F (34°C).

93°F34°C recorded at the source
Warm: pleasant on a hot day, cool in winter.

Facts

Coordinates
43.0380, -112.0040 (Google Maps, OSM)
Source temperature
93°F (34°C)
Access
Unknown
Type
Unknown
Fee
Not recorded
Clothing optional
Not recorded
Nearest town
Not recorded
State
Idaho
Data sources
NOAA NCEI. See sources

Map

Larger marker is Alkali Flats Warm Spring; smaller markers are other springs within 50 miles.

Quick answers

How hot is Alkali Flats Warm Spring?
The hottest recorded reading at the source is 93°F (34°C). That is the outlet temperature, not a pool temperature; water cools as it flows away from the source.
Where is Alkali Flats Warm Spring?
Alkali Flats Warm Spring is in Idaho, at coordinates 43.0380, -112.0040.
What other hot springs are near Alkali Flats Warm Spring?
The closest listed springs, in straight-line distance, are Warm Spring (Bingham County), under 1 mi; Warm Spring (Caribou County), 7 mi; and Yandell Springs, 10 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