Hot Springs Valley

Plumas County, California · Near Chester
40.4400°N, 121.4200°W · 5,816 ft
83°F 39°F air · Good soaking weather 5,816 ft Open Short Walk National Park Service Camping nearby (1.3 mi)

Hot Springs Valley is a thermal point inside Lassen Volcanic National Park, Plumas County, about fourteen miles from Chester. The water is warm, below body temperature, and very low in dissolved minerals by the USGS sample. Access is listed as open. National Park Service rules apply to anything you do at the water.

Location

From Chester-Warner Valley Road it is close to a mile on foot. Warner Valley Campground lies barely more than a mile from the spring. At nearly six thousand feet inside the park, winter snow is very deep and the year is wet. This is Park Service land with a National Park designation.

Warner Valley Campground is the obvious base, a short distance off. the best months on record says winter, which conflicts with the snowfall; check the park's road status before trusting the month figure. The water is warm and cannot burn anyone. Park rules govern bathing; ask before getting in. The water sample is from 1981.

History of Hot Springs Valley

The spring lies within Lassen Volcanic National Park. A USGS sample from September 1981 found almost nothing dissolved in the water.

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 Springs Valley.

Aerial view of the ground around Hot Springs Valley LiDAR bare-earth view of the same ground around Hot Springs Valley
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
Valley floor
Gentle slopes rise on both sides.
Highest ground nearby
192 ft above the spring
Within a quarter mile, to the south
Cross-section through the spring

A slice through the ground from southwest to northeast, about 0.6 miles end to end.

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

Heat Below
108 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 58% 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
32°
Jan
32°
Feb
35°
Mar
40°
Apr
48°
May
60°
Jun
68°
Jul
67°
Aug
60°
Sep
49°
Oct
38°
Nov
30°
Dec
Annual Precip: 46.7 in Annual Snow: 202.7 in
Best Time to Visit
December Air 30°F · Water 83°F · +53° contrast
January Air 32°F · Water 83°F · +52° contrast
February Air 32°F · Water 83°F · +52° contrast
December offers 38°F more contrast than July
Current Conditions
39°F
E 3.6 mph 63% Good soaking weather
Tuesday 65° Low 45° Sunny 1% precip
Spring is +18° warmer
Wednesday 59° Low 43° Sunny then Slight Chance Light Rain 20% precip
Spring is +24° warmer
Thursday 59° Low 42° Sunny 7% precip
Spring is +24° warmer
Friday 68° Low 44° Sunny
Spring is +15° warmer
Saturday 70° Low 48° Sunny
Spring is +13° warmer
Water Chemistry Sampled 1981-09-09

The water at Hot Springs Valley is slightly acidic (pH 6.7) with 49 mg/L total dissolved solids.

pH 6.7 Slightly Acidic
pH influences mineral absorption through skin
Higher mineral concentration for therapeutic soaking
Calcium 6 mg/L
May support bone density and joint health
Magnesium 2 mg/L
Known for muscle relaxation and stress relief
Sodium 2 mg/L
Supports circulation and skin hydration
Sulfate 0 mg/L
Traditionally used for skin conditions and inflammation
Chloride 3 mg/L
Natural antiseptic with skin health benefits
Where to Stay

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Nearby Camping
Warner Valley Campground 1.3 mi away

Overview Warner Valley campground is a limited development facility in the south eastern area of the park. It has vault toilets and potable water spigots. Numerous trails can be accessed from the campground. Recreation Hiking trails accessible from the campground Facilities Vault toilets - seasonal Natural Features Lassen Volcanic national park is known for its volcanic history, as well as its diversity of plants and animals. It contains 300 active volcanic domes, as well as many hydrotherma...

Reservable Yes
Reserve on Recreation.gov →
Mile-High Advisory 5,816 ft

Hot Springs Valley sits at 5,816 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 23% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

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Temperature
83°F
Warm Hot Boiling
Water Temp 83°F (28°C)
Avg Air Temp 47°F
Above Ambient +37°F
Mild soaking conditions September
Access
Open
Road Access Short Walk
Nearest Road Chester-Warner Valley Road
Distance to Road 0.9 mi
Land
Ownership Federal
Agency National Park Service
Designation National Park
Unit Lassen Volcanic National Park
Manager National Park Service
Protection 1 - Permanent protection, natural state
Frequently Asked Questions
What is the water temperature at Hot Springs Valley?
Hot Springs Valley has a water temperature of 83°F (28°C). This is a warm thermal spring.
Where is Hot Springs Valley located?
Hot Springs Valley is located in Plumas County, California at 5,816 feet elevation, near Chester. Coordinates: 40.4400°N, 121.4200°W.
How do I get to Hot Springs Valley?
Hot Springs Valley has Short Walk road access, with the nearest road being Chester-Warner Valley Road (0.9 mi from the road).
Is Hot Springs Valley free to visit?
Hot Springs Valley has Open access. It is managed by National Park Service.
Can I camp near Hot Springs Valley?
Yes, Warner Valley Campground is located nearby (1.3 miles away).
What minerals are in the water at Hot Springs Valley?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 6.7 (slightly acidic). Total dissolved solids measure 49 mg/L.
Sources: USGS NWIS