Upper Warm Spring

Inyo County, California · Near Lone Pine
36.8300°N, 117.7360°W · 1,832 ft
Warm 1,832 ft Open Backcountry National Park Service

Upper Warm Spring is a backcountry water source in Death Valley National Park, Inyo County, roughly 26 miles out from Lone Pine. Whatever is known about its temperature lives in the name. It is called warm, nothing more, no reading, so do not expect a soak. Public access is open and there is a photo on record. The nearest road is more than eight miles away.

Location

Getting there is a walk of eight miles and change from the closest road, left unnamed in the record, inside a national park where the ground is managed by the Park Service. The elevation is modest, under two thousand feet, and the climate is desert: about six inches of rain in a year and the odd dusting of snow. Average temperatures run in the low seventies, which in this park means summer highs far beyond that. Nothing in the record describes the terrain or a trail.

Nothing is listed for best season or for camping, and no fee appears. The walk in is long and the water may be barely warm, so this is a destination for people who already know how to move through desert backcountry. Check with the park before setting out, since conditions change and the record here is thin. Temperature unknown, so do not bathe on the strength of the name.

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 Upper Warm Spring.

Aerial view of the ground around Upper Warm Spring LiDAR bare-earth view of the same ground around Upper Warm 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.

Setting
Open ground
Flat, open ground all around.
Highest ground nearby
51 ft above the spring
Within a quarter mile, to the east
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
97 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 42% 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
51°
Jan
55°
Feb
62°
Mar
71°
Apr
78°
May
91°
Jun
95°
Jul
94°
Aug
86°
Sep
73°
Oct
59°
Nov
49°
Dec
Annual Precip: 6.4 in Annual Snow: 7.4 in
Where to Stay

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Temperature
Warm
Warm Hot Boiling
Avg Air Temp 72°F
Access
Open
Road Access Backcountry
Distance to Road 8.4 mi
Land
Ownership Federal
Agency National Park Service
Designation National Park
Unit Death Valley National Park
Manager National Park Service
Protection 1 - Permanent protection, natural state
Frequently Asked Questions
What is the water temperature at Upper Warm Spring?
Upper Warm Spring is classified as warm. An exact temperature measurement has not been recorded.
Where is Upper Warm Spring located?
Upper Warm Spring is located in Inyo County, California at 1,832 feet elevation, near Lone Pine. Coordinates: 36.8300°N, 117.7360°W.
How do I get to Upper Warm Spring?
Upper Warm Spring has Backcountry road access (8.4 mi from the road).
Is Upper Warm Spring free to visit?
Upper Warm Spring has Open access. It is managed by National Park Service.