Unnamed Thermal Spring

Harney County, Oregon · Near Hines
43.1850°N, 119.0580°W · 4,122 ft
154°F 32°F air · Good soaking weather 4,122 ft Restricted Short Walk US Fish and Wildlife Service
Very Hot Source, Use Extreme Caution

At 154°F, the source water at This spring is hot enough to cause burns. Some hot springs this hot have cooler side pools or downstream areas suitable for soaking. Always test the water temperature before entering.

Aerial view of the ground around the spring LiDAR bare-earth view of the same ground around the spring
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 unnamed thermal point sits inside Malheur National Wildlife Refuge in Harney County, roughly 26 miles from Hines. It runs scalding. Access is on record as restricted, which on a federal wildlife refuge usually means the refuge sets the terms and you should ask before going anywhere near it. Nothing on file suggests anyone soaks here, and the temperature alone would rule that out.

Location

High desert basin here, a little over four thousand feet up, light on snow and dry all round. South Harney Lake Lane runs closest, and the point sits about a fifth of a mile from it, so on paper the walk is short. This ground is Fish and Wildlife Service land, run as refuge, which means wildlife rules come before anything a visitor wants.

December through February get the best marks on file. Access is restricted, so contact the refuge before making a plan around this spot. Water at this temperature causes burns instantly; keep hands and feet clear of any outflow. A sample taken in the summer of 2018 gave a neutral pH, and that is the most recent chemistry on file. No campground is listed nearby.

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 this spring.

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

A slice through the ground from southwest to northeast, about 0.6 miles end to end.

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

Heat Below
69 milliwatts per square meter of heat flow

That's close to the US average of 65. It's higher than at 4% 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
29°
Jan
33°
Feb
40°
Mar
47°
Apr
55°
May
64°
Jun
75°
Jul
74°
Aug
64°
Sep
50°
Oct
38°
Nov
29°
Dec
Annual Precip: 11.6 in Annual Snow: 21.7 in
Best Time to Visit
January Air 29°F · Water 154°F · +125° contrast
December Air 29°F · Water 154°F · +125° contrast
February Air 33°F · Water 154°F · +121° contrast
January offers 46°F more contrast than July
Current Conditions
32°F
Clear N 0.0 mph 86% Good soaking weather
Tuesday 67° Low 41° Mostly Sunny 2% precip
Spring is +87° warmer
Wednesday 65° Low 44° Sunny 5% precip
Spring is +89° warmer
Thursday 64° Low 44° Chance Rain Showers then Slight Chance Showers And Thunderstorms 36% precip
Spring is +90° warmer
Friday 68° Low 44° Sunny 4% precip
Spring is +86° warmer
Saturday 69° Low 44° Sunny
Spring is +85° warmer
Water Chemistry Sampled 2018-07-16

The water at This spring is neutral (pH 7.2).

pH 7.2 Neutral
pH influences mineral absorption through skin
Where to Stay

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Temperature
154°F
Warm Hot Boiling
Water Temp 154°F (68°C)
Avg Air Temp 50°F
Above Ambient +104°F
Great soaking conditions September
Access
Restricted
Road Access Short Walk
Nearest Road South Harney Lake Lane
Distance to Road 0.2 mi
Land
Ownership Federal
Agency US Fish and Wildlife Service
Designation National Wildlife Refuge
Unit Malheur National Wildlife Refuge
Manager US Fish and Wildlife Service
Protection 2 - Permanent protection, some use allowed
Frequently Asked Questions
What is the water temperature at ?
has a water temperature of 154°F (68°C). This is considered a hot spring, well above body temperature.
Where is located?
is located in Harney County, Oregon at 4,122 feet elevation, near Hines. Coordinates: 43.1850°N, 119.0580°W.
How do I get to ?
has Short Walk road access, with the nearest road being South Harney Lake Lane (0.2 mi from the road).
Is free to visit?
has Restricted access. It is managed by US Fish and Wildlife Service.
What minerals are in the water at ?
Water chemistry analysis shows the presence of pH. The pH is 7.2 (neutral).
Is it safe to soak at ?
No, not at the source. The water at reaches 154°F, which can cause severe burns within seconds. Look for cooled side pools or downstream stretches, and test with a hand before anything else.
Sources: USGS NWIS