Warm Spring

Mono County, California · Near Bridgeport
38.2030°N, 119.1180°W · 7,696 ft
77°F 38°F air · Good soaking weather 7,696 ft Short Walk Camping nearby (10.3 mi)
Aerial view of the ground around Warm Spring LiDAR bare-earth view of the same ground around 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.

Mono County's Warm Spring sits about six miles from Bridgeport at nearly 7,700 feet. The USGS sampled it in the fall of 2011 and logged 77 degrees, tepid. No owner or access note is on record, and no second name has attached itself to it. Bridgeport is as close as towns get here, per the record, and a USGS site number is the spring's only other identity.

Location

A walk of a few hundred yards from an unnamed road. This is cold country: average temperature in the low forties and close to six feet of snow each winter, with summers short and dry. Crags Campground, some ten miles distant, is the nearest on file. Nothing on file describes the ground around the outlet.

The record lists the three winter months as best. Those are deep-snow months at this elevation, so a winter visit means snow travel. No fee recorded. Access unknown. The temperature reading is from a 2011 sample, recent as these things go. Tepid water at this altitude is something to look at.

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 Warm Spring.

Setting
Hillside
The spring sits on a steep slope that climbs to the east.
Highest ground nearby
271 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
134 milliwatts per square meter of heat flow

That's about twice the US average of 65. It's higher than at 85% 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
27°
Jan
26°
Feb
30°
Mar
37°
Apr
45°
May
59°
Jun
66°
Jul
65°
Aug
58°
Sep
47°
Oct
36°
Nov
25°
Dec
Annual Precip: 14.3 in Annual Snow: 69.3 in
Best Time to Visit
December Air 25°F · Water 77°F · +52° contrast
February Air 26°F · Water 77°F · +51° contrast
January Air 27°F · Water 77°F · +50° contrast
December offers 41°F more contrast than July
Current Conditions
38°F
S 22.5 mph 53% Good soaking weather
Tuesday 73° Low 42° Sunny
Spring is +4° warmer
Wednesday 70° Low 40° Sunny
Spring is +7° warmer
Thursday 69° Low 39° Sunny
Spring is +8° warmer
Friday 71° Low 40° Sunny
Spring is +6° warmer
Saturday 73° Low 42° Sunny 2% precip
Spring is +4° warmer
Where to Stay

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Nearby Camping
Crags Campground 10.3 mi away

Overview Crags Campground is located just 10 miles from Bridgeport, California, at an elevation of 7,000 feet. The Twin Lakes area is close by, offering boating, fishing, hiking and horseback riding opportunities.Recreation Robinson Creek offers good rainbow trout fishing and can be easily accessed from within the campground. Numerous hiking trails are in the vicinity, including the popular Robinson Creek Trail.Facilities The campground contains one group site that can accommodate up to 45 pe...

Reservable Yes
Reserve on Recreation.gov →
Mile-High Advisory 7,696 ft

Warm Spring sits at 7,696 feet above sea level, way above the mile-high mark. You may not feel the altitude strongly, but hot water still dehydrates you faster at elevation. UV is about 31% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

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Temperature
77°F
Warm Hot Boiling
Water Temp 77°F (25°C)
Avg Air Temp 44°F
Above Ambient +34°F
Mild soaking conditions September
Access
Road Access Short Walk
Distance to Road 0.2 mi
Frequently Asked Questions
What is the water temperature at Warm Spring?
Warm Spring has a water temperature of 77°F (25°C). This is a warm thermal spring.
Where is Warm Spring located?
Warm Spring is located in Mono County, California at 7,696 feet elevation, near Bridgeport. Coordinates: 38.2030°N, 119.1180°W.
How do I get to Warm Spring?
Warm Spring has Short Walk road access (0.2 mi from the road).
Can I camp near Warm Spring?
Yes, Crags Campground is located nearby (10.3 miles away).
Sources: USGS NWIS, Wikipedia