Chance Spring

Mono County, California · Near Mammoth Lakes
37.6380°N, 118.8870°W · 7,200 ft
73°F 37°F air · Good soaking weather 7,200 ft Open Short Walk CITY Camping nearby (2.9 mi)

Chance Spring sits on land belonging to the Los Angeles city water and power department, in Mono County, and Mammoth Lakes is under six miles away. Cool for a soak is the reading, well short of bath warmth, so this is a spring to know about more than one to plan a trip around. Public access is open. A 1991 sample came back alkaline and high in dissolved solids, iron included.

Location

High desert at seventy-two hundred feet, with around eight feet of snow most years and dry conditions otherwise. No name is given for the nearest road, which lies some four hundred forty feet off, short-walk territory. The ground belongs to the utility, without park or forest standing. Sherwin Creek campground is about three miles.

The listed season is winter. Sherwin Creek, three miles, handles camping. The water is too cool to warm you up in winter air, and the sample is from 1991, so the chemistry is an old reading and the temperature carries no date. Fee: nothing listed.

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 Chance Spring.

Aerial view of the ground around Chance Spring LiDAR bare-earth view of the same ground around Chance 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
Gentle slope
The ground tilts gently up to the north.
Highest ground nearby
193 ft above the spring
Within a quarter mile, to the north
Cross-section through the spring

A slice through the ground from north to south, about 0.6 miles end to end.

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

Heat Below
135 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
29°
Jan
28°
Feb
32°
Mar
39°
Apr
46°
May
59°
Jun
66°
Jul
65°
Aug
59°
Sep
48°
Oct
37°
Nov
26°
Dec
Annual Precip: 18.3 in Annual Snow: 98.5 in
Best Time to Visit
December Air 26°F · Water 73°F · +47° contrast
February Air 28°F · Water 73°F · +45° contrast
January Air 29°F · Water 73°F · +44° contrast
December offers 40°F more contrast than July
Current Conditions
37°F
Clear WNW 25.0 mph 48% Good soaking weather
Tuesday 74° Low 42° Sunny
Wednesday 70° Low 41° Sunny
Spring is +3° warmer
Thursday 69° Low 39° Sunny
Spring is +4° warmer
Friday 71° Low 40° Sunny
Spring is +2° warmer
Saturday 73° Low 42° Sunny 1% precip
Water Chemistry Sampled 1991-04-17

The water at Chance Spring is alkaline (pH 8.7) with 1410 mg/L total dissolved solids. It is notably rich in sodium (supports circulation and skin hydration), chloride (natural antiseptic with skin health benefits), and total dissolved solids (higher mineral concentration for therapeutic soaking).

pH 8.7 Alkaline
pH influences mineral absorption through skin
Higher mineral concentration for therapeutic soaking
Calcium 1 mg/L
May support bone density and joint health
Magnesium 0 mg/L
Known for muscle relaxation and stress relief
Sodium 370 mg/L
Supports circulation and skin hydration
Sulfate 140 mg/L
Traditionally used for skin conditions and inflammation
Chloride 260 mg/L
Natural antiseptic with skin health benefits
Iron 11 µg/L
Iron-rich springs may support circulation
Where to Stay

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Nearby Camping
Sherwin Creek 2.9 mi away

Overview Sherwin Creek Campground is located in the eastern Sierra Nevada Mountains within 2 miles of the full-service community of Mammoth Lakes, California. Popular among anglers, hikers, off-road vehicle enthusiasts and photographers, the campground is near some of the most spectacular wilderness and outdoor recreation areas in the Sierras.Recreation With a motocross track and trails, Sherwin Creek is a hot spot for off-road vehicle enthusiasts. The area's majestic scenery and challenging...

Reservable Yes
Reserve on Recreation.gov →
Mile-High Advisory 7,200 ft

Chance Spring sits at 7,200 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 29% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

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Temperature
73°F
Warm Hot Boiling
Water Temp 73°F (23°C)
Avg Air Temp 45°F
Above Ambient +28°F
Mild soaking conditions September
Access
Open
Road Access Short Walk
Distance to Road 438 ft
Land
Ownership Local
Agency CITY
Designation LOTH
Unit Los Angeles Department of Water and Power
Manager CITY
Protection 4 - No known protection
Frequently Asked Questions
What is the water temperature at Chance Spring?
Chance Spring has a water temperature of 73°F (23°C). This is a warm thermal spring.
Where is Chance Spring located?
Chance Spring is located in Mono County, California at 7,200 feet elevation, near Mammoth Lakes. Coordinates: 37.6380°N, 118.8870°W.
How do I get to Chance Spring?
Chance Spring has Short Walk road access (438 ft from the road).
Is Chance Spring free to visit?
Chance Spring has Open access. It is managed by CITY.
Can I camp near Chance Spring?
Yes, Sherwin Creek is located nearby (2.9 miles away).
What minerals are in the water at Chance Spring?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 8.7 (alkaline). Total dissolved solids measure 1,410 mg/L.
Sources: USGS NWIS