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Every Hot Spring

Sunflower Hot Springs

Sunflower Hot Springs is a primitive, undeveloped hot spring in Valley County, Idaho. Water at the source is recorded at 149°F (65°C), hot enough to scald. Records place it on public land.

149°F65°C recorded at the source
Scalding at the source. Do not enter without a cooled, mixed pool.

Sunflower Hot Springs is a geothermal mineral spring in Boise National Forest, Idaho, United States.

Facts

Coordinates
44.7292, -114.9936 (Google Maps, OSM)
Source temperature
149°F (65°C)
Access
Public land
Type
Primitive (undeveloped)
Fee
Not recorded
Clothing optional
Not recorded
Nearest town
Not recorded
State
Idaho
Data sources
NOAA NCEI, OpenStreetMap, Wikipedia, Wikidata, Official sources (linked below). See sources

Map

Larger marker is Sunflower Hot Springs; smaller markers are other springs within 50 miles.

Quick answers

Can you soak at Sunflower Hot Springs?
Records place Sunflower Hot Springs on public land. That is not a guarantee of current access: closures, fire restrictions and road conditions change, so check with the land manager before you go.
How hot is Sunflower Hot Springs?
The hottest recorded reading at the source is 149°F (65°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 Sunflower Hot Springs?
Sunflower Hot Springs is in Valley County, Idaho, at coordinates 44.7292, -114.9936.
What other hot springs are near Sunflower Hot Springs?
The closest listed springs, in straight-line distance, are Thomas Creek Ranch Hot Spring, under 1 mi; Sunflower Flat Hot Spring, 1 mi; and Cox Hot Springs, 8 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.

Checked against

  1. Wikipediaen.wikipedia.org/wiki/Sunflower_Hot_Springs

Merged from

  1. NOAA NCEI Thermal Springs List (archived 2025): survey location and source temperature, public domain
  2. OpenStreetMap: mapped feature and its tags, ODbL
  3. Wikipedia: short description, CC BY-SA 4.0
  4. Wikidata: name, county and website, CC0