Hot Seeps (San Emidio Desert)

Lyon County, Nevada · Near Fernley
40.3890°N, 119.4020°W · 4,076 ft
203°F 46°F air · Good soaking weather 4,076 ft Roadside
Dangerously Hot, Not Safe for Soaking

Hot Seeps (San Emidio Desert) reaches 203°F, far above safe soaking levels. Contact with this water will cause severe burns. Look for cooled downstream pools or view from a safe distance only.

Aerial view of the ground around Hot Seeps (San Emidio Desert) LiDAR bare-earth view of the same ground around Hot Seeps (San Emidio Desert)
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.

The name says seeps and the temperature says near boiling, a couple of hundred degrees. Hot Seeps in the San Emidio Desert are listed in Lyon County with Fernley the nearest town at fifty-eight miles. Ownership and access are unknown; water chemistry and a photo are missing too. They sit within fifty feet of a road.

Location
32 miles from Cold Springs, NV

The seeps are essentially roadside, under fifty feet from a road with no name in the record, in low desert a little above four thousand feet. This is dry ground, an annual ten inches of precipitation, with twenty-odd inches of snow over winter. The ground they rise through and what drains from them go undescribed.

Water near boiling will take skin off. Keep back from the seeps and keep anyone small or four-legged back further. The record likes December through February. Because no owner is named and access is not recorded, assume permission is needed until you learn otherwise. Roadside class; no fee or camping on file.

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 Hot Seeps (San Emidio Desert).

Setting
Open ground
Flat, open ground all around.
Highest ground nearby
79 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
119 milliwatts per square meter of heat flow

That's about twice the US average of 65. It's higher than at 71% 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
36°
Jan
39°
Feb
45°
Mar
53°
Apr
61°
May
72°
Jun
81°
Jul
80°
Aug
71°
Sep
57°
Oct
44°
Nov
35°
Dec
Annual Precip: 9.8 in Annual Snow: 20.8 in
Best Time to Visit
December Air 35°F · Water 203°F · +168° contrast
January Air 36°F · Water 203°F · +167° contrast
February Air 39°F · Water 203°F · +164° contrast
December offers 46°F more contrast than July
Current Conditions
46°F
N 21.6 mph 40% Good soaking weather
Tuesday 79° Low 47° Sunny
Spring is +124° warmer
Wednesday 76° Low 50° Sunny 3% precip
Spring is +127° warmer
Thursday 75° Low 49° Sunny 2% precip
Spring is +128° warmer
Friday 79° Low 49° Sunny
Spring is +124° warmer
Saturday 81° Low 51° Sunny
Spring is +122° warmer
Temperature
203°F
Warm Hot Boiling
Water Temp 203°F (95°C)
Avg Air Temp 56°F
Above Ambient +147°F
Access
Road Access Roadside
Distance to Road 48 ft
Frequently Asked Questions
What is the water temperature at Hot Seeps (San Emidio Desert)?
Hot Seeps (San Emidio Desert) has a water temperature of 203°F (95°C). This is considered a hot spring, well above body temperature.
Where is Hot Seeps (San Emidio Desert) located?
Hot Seeps (San Emidio Desert) is located in Lyon County, Nevada at 4,076 feet elevation, near Fernley. Coordinates: 40.3890°N, 119.4020°W.
How do I get to Hot Seeps (San Emidio Desert)?
Hot Seeps (San Emidio Desert) has Roadside road access (48 ft from the road).
Is it safe to soak at Hot Seeps (San Emidio Desert)?
No, not at the source. The water at Hot Seeps (San Emidio Desert) reaches 203°F, which can cause severe burns within seconds. Look for cooled side pools or downstream stretches, and test with a hand before anything else.