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Wild spring

Mormon Bend Hot Springs

  • Free
  • 3 hr 28 min from Boise
  • Roadside

A hot spring near the Forest Service's Mormon Bend Campground on the Salmon River east of Stanley, listed by the Stanley-Sawtooth Chamber among the area's soakable springs. The campground has 15 sites and is open April through September.

✓ Verified November 2026

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Price
Free
Nearest town
Stanley
From Boise
3 hr 28 min
Hike (one way)
Roadside

Plan your visit

Tickets & booking

PriceFree
AccessFree public access

On site

LodgingNo
Camping nearbyYes
Land managerUnknown

Not stated by the land manager: swimwear, ages, dogs.

Soak responsibly

  • Pack out everything, including food scraps and toilet paper. Use WAG bags where required.
  • No soap, shampoo or sunscreen in the pools; rinse away from the water.
  • Check permits and closures with unknown before you go.
  • Keep groups small and give others space. Respect posted dog and camping rules.

Water temperature

This venue doesn't publish pool temperatures.

Mineral profile

Total dissolved minerals

274 mg/L

Lightly mineralized · Sodium–sulfate (sodium sulfate water)

Sodium68.5 mg/L
Calcium2.1 mg/L
Magnesium0.10 mg/L
Potassium2.3 mg/L
Chloride5.2 mg/L
Sulfate41.5 mg/L
Silica91.5 mg/L
pH
9.1
Temp at source
119°F
Fluoride
14 mg/L
Iron
0.03 mg/L

Lab analysis of the source water at “11n 14e 21 1s” (0.5 mi from Mormon Bend Hot Springs), sampled 1954–1972 by the USGS and partners (data). Pool water may be cooled, mixed or treated, and spring chemistry is generally stable over decades. We report measurements only; we don't make health claims.

What's here

  • near Mormon Bend Campground
  • Salmon River

Getting there

  • From Boise3 hr 28 min140 mi
  • From Stanley12 min7 mi
  • From Friedman Memorial / Sun Valley (SUN)1 hr 58 min81 mi

Typical driving time without traffic or snow.

Elevation6,191 ft
Road
  • Paved road
  • Off Highway 75 east of Stanley

Things to do near Stanley

park

Salmon River Recreation Complex

Forest Service campgrounds and river access along Highway 75 east of Stanley

town

Stanley

Small mountain town at the junction of Highways 21 and 75 with lodging, food and visitor information

lake

Redfish Lake Recreation Complex

Campgrounds, beaches, day-use areas and a lodge around Redfish and Little Redfish lakes south of Stanley

Straight-line distances. Campground and trailhead data © OpenStreetMap contributors.

Nearby springs

Basin Creek Hot Springs: 1 mi · Boat Box Hot Springs: 3 mi · Sunbeam Hot Springs: 4 mi

Sources (2)

· checked November 2026

Prices, hours and rules are checked against the official site and land-agency pages. Spot something out of date? Let us know.

  1. stanleycc.org: Relax
  2. fs.usda.gov: Mormon bend campground