# Sweet Warm Spring, Idaho

Sweet Warm Spring in Idaho. 68°F (20°C). Roadside. Gem County.

- Page: https://www.soakingsprings.com/hot-springs/idaho/sweet-warm-spring
- Source: Soaking Springs, researched and maintained by Armen Suny
- Updated: 2026-09-14

## Can you soak at Sweet Warm Spring?

The water leaves the ground at 68°F, cooler than most swimming pools. You can drive right up to it. We haven't confirmed whether it has a pool or charges a fee.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 68°F (20°C) (USGS record; developed pools are often cooled) |
| pH | 7.2 (Neutral) |
| Total dissolved solids | 580 mg/L |
| Elevation | 2,530 ft |
| Access | Roadside, 51 ft from the nearest road (Sweet Ola Highway) |
| County | Gem County |
| Nearest town | Emmett |
| Coordinates | 43.97200, -116.32500 |
| Best months to soak | January, December, February (largest gap between water and average air temperature) |
| Nearest campground | SWINGING BRIDGE, 17.1 mi |

## About Sweet Warm Spring

Sweet Warm Spring is barely warm, a few degrees under seventy in the one measurement on file, taken in August 1972. Dip a hand and you would register that it is not cold, and little more. It surfaces in Gem County, eleven miles from Emmett in the low country of southwestern Idaho. The land owner is not recorded and neither is any access status, so whether you can legally reach the water is an open question.

The Sweet Ola Highway runs right past, fifty feet or so from the spring, about as roadside as it gets. At around twenty-five hundred feet the weather is lowland weather: mild winters with light snow, and a fairly dry year. Whose ground it sits on is not listed.

Midwinter is listed as the best time to come, though with so little heat in the water the season hardly changes what you will find. The closest camping on file is Swinging Bridge, roughly seventeen miles off. No burn risk at all. What needs checking is permission, since nothing on record says the spring is open, and the reading itself dates back half a century.

## Water chemistry

Lab sample from 1972-08-04 (Water Quality Portal).

| Measure | Value |
|---|---|
| pH | 7.2 |
| Total dissolved solids | 580 mg/L |
| Calcium | 15 mg/L |
| Magnesium | 2.4 mg/L |
| Sodium | 99 mg/L |
| Sulfate | 57 mg/L |
| Chloride | 30 mg/L |
| Iron | 20 µg/L |

## Nearby

- Nearest city page: [Hot springs near Emmett](https://www.soakingsprings.com/hot-springs/near/idaho/emmett), 10 mi away
- State page: [Hot springs in Idaho](https://www.soakingsprings.com/hot-springs/idaho)
- [Roystone Hot Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/roystone-hot-springs): 151°F source, Short Walk, near Emmett, Gem County, developed pools, pools 95–104°F, year-round
- [Highland Land Co Warm Spring, ID](https://www.soakingsprings.com/hot-springs/idaho/highland-land-co-warm-spring): 73°F source, Short Walk, near Emmett, Gem County
- [Deer Hot Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/deer-hot-springs): 176°F source, pH 8.2, Short Walk, near Idaho City, Boise County
- [Warm Springs Creek Hot Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/warm-springs-creek-hot-springs): 167°F source, pH 8.4, TDS 307 mg/L, Roadside, near Idaho City, Boise County
- [Terteling Hot Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/terteling-hot-springs): 106°F source, Roadside, near Garden City, Ada County
- [Hot Spring Campground, ID](https://www.soakingsprings.com/hot-springs/idaho/hot-spring-campground): 124°F source, pH 9.0, Roadside, near Idaho City, Boise County, primitive pools

## Questions

**What is the water temperature at Sweet Warm Spring?**
Sweet Warm Spring has a water temperature of 68°F (20°C). This is a warm thermal spring.

**Where is Sweet Warm Spring located?**
Sweet Warm Spring is located in Gem County, Idaho at 2,530 feet elevation, near Emmett. Coordinates: 43.9720°N, 116.3250°W.

**How do I get to Sweet Warm Spring?**
Sweet Warm Spring has Roadside road access, with the nearest road being Sweet Ola Highway (51 ft from the road).

**Can I camp near Sweet Warm Spring?**
Yes, Swinging Bridge is located nearby (17.1 miles away).

**What minerals are in the water at Sweet Warm Spring?**
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 7.2 (neutral). Total dissolved solids measure 580 mg/L.

## Sources

- USGS thermal springs records, Water Quality Portal lab analyses, OpenStreetMap, Wikipedia/Wikidata, NOAA climate normals