Lava Hot Springs (Thermal Mineral Springs)

Caribou County, Idaho · Near Soda Springs
42.6194°N, 112.0142°W
Roadside Camping nearby (10.7 mi)
Aerial view of the ground around Lava Hot Springs (Thermal Mineral Springs) LiDAR bare-earth view of the same ground around Lava Hot Springs (Thermal Mineral Springs)
Aerial LiDAR bare earth

Drag the handle to compare the two views. The orange dot marks the spring, in a frame about three quarters of a mile wide.

This listing covers the Lava Hot Springs thermal mineral springs as a system, the geothermal springs Wikipedia describes in and around the Idaho town of the same name. No temperature is attached to this record, so the page makes no claim about how hot the water is. What is on file is a 1976 chemistry sample with a high mineral load, some iron among it, and a position on Main Street in town. The record places it in Caribou County, with Soda Springs as the nearest city, roughly twenty-two miles.

Location

Main Street runs about seventy feet from the point on record, which is to say the springs are in town. No land owner or public access status is attached to this entry. The climate here is moderate, with winters that are snowy without being extreme and a year that leans dry. Elevation is not recorded.

No best season is listed. Pebble Guard Station, about eleven miles away, is the only campground on file. Without a temperature on record there is no heat warning to give beyond the usual care around thermal water. Ownership and access are not recorded here, so look to the city itself for current arrangements.

History of Lava Hot Springs (Thermal Mineral Springs)

The springs gave the city of Lava Hot Springs its name, according to Wikipedia, which places the system in Bannock County, Idaho. A USGS thermal site number is attached to the record.

Terrain

Aircraft with laser scanners measured this ground to within inches. The scan strips out trees and buildings, leaving the bare shape of the land around Lava Hot Springs (Thermal Mineral Springs).

Setting
Gentle slope
The ground tilts gently up to the south.
Highest ground nearby
117 ft above the spring
Within a quarter mile, to the south
Cross-section through the spring

A slice through the ground from west to east, about 0.6 miles end to end.

Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.

Heat Below
88 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 27% of the springs on this site.

Heat flow measures the warmth working its way up through the ground from deep inside the earth. Where it runs high, rain and snowmelt that seep down through cracks in the rock come back up hot.

Heat flow estimate: Stanford Thermal Earth Model (Aljubran & Horne, 2024), CC BY 4.0.

Monthly Climate
23°
Jan
26°
Feb
34°
Mar
41°
Apr
52°
May
64°
Jun
73°
Jul
72°
Aug
62°
Sep
47°
Oct
34°
Nov
22°
Dec
Annual Precip: 20.0 in Annual Snow: 68.3 in
Current Conditions
Today 72° Low 43° Mostly Sunny
Wednesday 75° Low 49° Sunny then Slight Chance Showers And Thunderstorms 18% precip
Thursday 70° Low 44° Light Rain Likely then Chance Showers And Thunderstorms 74% precip
Friday 68° Low 39° Sunny then Slight Chance Light Rain 16% precip
Saturday 70° Low 39° Sunny 5% precip
Water Chemistry Sampled 1976-06-29

The water at Lava Hot Springs (Thermal Mineral Springs) is neutral (pH 6.8) with 776 mg/L total dissolved solids. It is notably rich in calcium (may support bone density and joint health), magnesium (known for muscle relaxation and stress relief), and chloride (natural antiseptic with skin health benefits).

pH 6.8 Neutral
pH influences mineral absorption through skin
Higher mineral concentration for therapeutic soaking
Calcium 120 mg/L
May support bone density and joint health
Magnesium 32 mg/L
Known for muscle relaxation and stress relief
Sodium 170 mg/L
Supports circulation and skin hydration
Sulfate 110 mg/L
Traditionally used for skin conditions and inflammation
Chloride 190 mg/L
Natural antiseptic with skin health benefits
Iron 70 µg/L
Iron-rich springs may support circulation
Where to Stay

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Nearby Camping
Pebble Guard Station 10.7 mi away

Overview Pebble Guard Station is located at the base of Bonneville Peak along beautiful Pebble Creek, a tributary of the Portneuf River. The rustic one-room cabin offers a secluded retreat on four fenced acres, surrounded by high mountain vistas. The original Pebble Guard Station was built in 1908. The current structure stands at a higher altitude and was built in 1933.Guests can drive to Pebble Guard Station during warmer months, but it can only be accessed by snowmobile or other snow means...

Reservable Yes
Reserve on Recreation.gov →
Temperature
No data recorded
Avg Air Temp 46°F
Access
Road Access Roadside
Nearest Road Main Street
Distance to Road 71 ft
Frequently Asked Questions
Where is Lava Hot Springs (Thermal Mineral Springs) located?
Lava Hot Springs (Thermal Mineral Springs) is located in Caribou County, Idaho, near Soda Springs. Coordinates: 42.6194°N, 112.0142°W.
How do I get to Lava Hot Springs (Thermal Mineral Springs)?
Lava Hot Springs (Thermal Mineral Springs) has Roadside road access, with the nearest road being Main Street (71 ft from the road).
Can I camp near Lava Hot Springs (Thermal Mineral Springs)?
Yes, Pebble Guard Station is located nearby (10.7 miles away).
What minerals are in the water at Lava Hot Springs (Thermal Mineral Springs)?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 6.8 (neutral). Total dissolved solids measure 776 mg/L.
Sources: USGS NWIS, Wikipedia