Paoha Island Springs

Mono County, California · Near Bridgeport
37.9930°N, 119.0280°W · 6,388 ft
181°F 46°F air · Good soaking weather 6,388 ft Open Hike CITY Camping nearby (11.9 mi)
Very Hot Source, Use Extreme Caution

At 181°F, the source water at Paoha Island Springs 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.

Paoha Island Springs is a scalding thermal feature in Mono County, with water that comes out far above bath temperature, hot enough to cook. The land is held by the Los Angeles Department of Water and Power and access is on record as open. Bridgeport is the nearest town, around twenty miles away. The springs are reached on foot, a hike of close to three miles from the nearest road.

Location

Getting there means walking in across ground the record does not describe. The elevation is high basin country, above six thousand feet, and winters drop several feet of snow. Summers are dry. The land is city-owned, a Los Angeles Department of Water and Power holding, and no road is named in the file. Lower Virginia Creek Primitive Campground is about twelve miles away.

Do not get in this water. At the recorded temperature it will scald skin on contact. The listed season is winter, which at this elevation and snowfall is a strange recommendation; the hike in will be snowbound most of those months, so judge the timing yourself. The water was sampled in 2018. Access is open per the record, and no fee is 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 Paoha Island Springs.

Aerial view of the ground around Paoha Island Springs LiDAR bare-earth view of the same ground around Paoha Island Springs
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 northwest to southeast, about 0.6 miles end to end.

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

Heat Below
130 milliwatts per square meter of heat flow

That's about twice the US average of 65. It's higher than at 81% 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
31°
Jan
31°
Feb
35°
Mar
43°
Apr
52°
May
64°
Jun
72°
Jul
71°
Aug
64°
Sep
52°
Oct
41°
Nov
30°
Dec
Annual Precip: 15.1 in Annual Snow: 67.5 in
Best Time to Visit
December Air 30°F · Water 181°F · +151° contrast
January Air 31°F · Water 181°F · +150° contrast
February Air 31°F · Water 181°F · +150° contrast
December offers 42°F more contrast than July
Current Conditions
46°F
WSW 3.0 mph 55% Good soaking weather
Tuesday 77° Low 49° Sunny
Spring is +104° warmer
Wednesday 74° Low 46° Sunny
Spring is +107° warmer
Thursday 73° Low 47° Sunny
Spring is +108° warmer
Friday 74° Low 48° Sunny
Spring is +107° warmer
Saturday 76° Low 50° Sunny 2% precip
Spring is +105° warmer
Where to Stay

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Nearby Camping
Lower Virginia Creek Primitive Campground 11.9 mi away

Rustic campsites with fire rings in Jeffrey Pine Forest. There is no trash service please pack out your trash.

Reserve on Recreation.gov →
Mile-High Advisory 6,388 ft

Paoha Island Springs sits at 6,388 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 26% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

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Temperature
181°F
Warm Hot Boiling
Water Temp 181°F (83°C)
Avg Air Temp 49°F
Above Ambient +132°F
Great soaking conditions September
Access
Open
Road Access Hike
Distance to Road 2.9 mi
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 Paoha Island Springs?
Paoha Island Springs has a water temperature of 181°F (83°C). This is considered a hot spring, well above body temperature.
Where is Paoha Island Springs located?
Paoha Island Springs is located in Mono County, California at 6,388 feet elevation, near Bridgeport. Coordinates: 37.9930°N, 119.0280°W.
How do I get to Paoha Island Springs?
Paoha Island Springs has Hike road access (2.9 mi from the road).
Is Paoha Island Springs free to visit?
Paoha Island Springs has Open access. It is managed by CITY.
Can I camp near Paoha Island Springs?
Yes, Lower Virginia Creek Primitive Campground is located nearby (11.9 miles away).
Is it safe to soak at Paoha Island Springs?
No, not at the source. The water at Paoha Island Springs reaches 181°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