Hartsel Hot Springs

Park County, Colorado · Near Fairplay
39.0170°N, 105.7930°W · 8,954 ft
126°F 46°F air · Good soaking weather 8,954 ft Short Walk Camping nearby (10.1 mi)

Hartsel Hot Springs comes out hot, in the range where you would want to mix it with cooler water before sitting in it. The site is in Park County, eighteen miles from Fairplay. The USGS keeps a chemistry record from 1976 and OpenStreetMap marks the point under the same name. Public access goes unrecorded, as does ownership.

Location

Roughly five hundred feet separate the spring from the closest road, which the record files as a short walk. The elevation is close to nine thousand feet. This is a dry, high basin with modest snow for Colorado and not much rain. The record names no land unit and no road.

Winter months rank best in the record. Water this hot can burn; test before you touch. Happy Meadows campground is the nearest on file at about ten miles. The pH reading is slightly acidic and dates to 1976. Since land ownership and access are both blank, assume nothing about your right to be there until you have checked.

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 Hartsel Hot Springs.

Aerial view of the ground around Hartsel Hot Springs LiDAR bare-earth view of the same ground around Hartsel Hot 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 west.
Highest ground nearby
106 ft above the spring
Within a quarter mile, to the west
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
169 milliwatts per square meter of heat flow

That's about 2½ times the US average of 65. It's higher than at 96% 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
11°
Jan
15°
Feb
25°
Mar
33°
Apr
43°
May
58°
Jun
62°
Jul
60°
Aug
53°
Sep
39°
Oct
25°
Nov
12°
Dec
Annual Precip: 13.9 in Annual Snow: 46.2 in
Best Time to Visit
January Air 11°F · Water 126°F · +115° contrast
December Air 12°F · Water 126°F · +114° contrast
February Air 15°F · Water 126°F · +111° contrast
January offers 51°F more contrast than July
Current Conditions
46°F
Clear S 25.0 mph 66% Good soaking weather
Today 69° Low 44° Partly Sunny then Chance Showers And Thunderstorms 48% precip
Spring is +57° warmer
Wednesday 70° Low 46° Slight Chance Rain Showers then Chance Showers And Thunderstorms 68% precip
Spring is +56° warmer
Thursday 66° Low 43° Showers And Thunderstorms 77% precip
Spring is +60° warmer
Friday 69° Low 39° Partly Sunny then Chance Showers And Thunderstorms 38% precip
Spring is +57° warmer
Saturday 66° Low 38° Mostly Sunny then Chance Showers And Thunderstorms 46% precip
Spring is +60° warmer
Water Chemistry Sampled 1976-04-26

The water at Hartsel Hot Springs is slightly acidic (pH 6.6). It is notably rich in calcium (may support bone density and joint health), sodium (supports circulation and skin hydration), and sulfate (traditionally used for skin conditions and inflammation).

pH 6.6 Slightly Acidic
pH influences mineral absorption through skin
Calcium 120 mg/L
May support bone density and joint health
Magnesium 21 mg/L
Known for muscle relaxation and stress relief
Sodium 670 mg/L
Supports circulation and skin hydration
Sulfate 380 mg/L
Traditionally used for skin conditions and inflammation
Chloride 820 mg/L
Natural antiseptic with skin health benefits
Iron 420 µg/L
Iron-rich springs may support circulation
Where to Stay

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Nearby Camping
Happy Meadows 10.1 mi away

Overview Happy Meadows Campground is situated along the South Platte River near the Eleven Mile Reservoir and Eleven Mile Canyon. Excellent fishing, tubing, and hiking await visitors. Eleven Mile Canyon is rich in natural resources and historic significance. Originally called Granite Canyon, the towering gray walls rise 500 feet above the river.Recreation World-class trout fishing is a major attraction on the South Platte. Visitors can also venture to Florissant Fossil Beds to view fossils...

Reservable Yes
Reserve on Recreation.gov →
High Altitude Advisory 8,954 ft

At 8,954 feet, Hartsel Hot Springs is in high-altitude territory where the air is noticeably thinner. Soaking in hot water accelerates dehydration and can amplify altitude effects like headache and fatigue. UV radiation is roughly 36% stronger here. Wear sunscreen even on overcast days and take breaks from the water to rehydrate.

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Temperature
126°F
Warm Hot Boiling
Water Temp 126°F (52°C)
Avg Air Temp 36°F
Above Ambient +90°F
Great soaking conditions September
Access
Road Access Short Walk
Distance to Road 0.1 mi
Frequently Asked Questions
What is the water temperature at Hartsel Hot Springs?
Hartsel Hot Springs has a water temperature of 126°F (52°C). This is considered a hot spring, well above body temperature.
Where is Hartsel Hot Springs located?
Hartsel Hot Springs is located in Park County, Colorado at 8,954 feet elevation, near Fairplay. Coordinates: 39.0170°N, 105.7930°W.
How do I get to Hartsel Hot Springs?
Hartsel Hot Springs has Short Walk road access (0.1 mi from the road).
Can I camp near Hartsel Hot Springs?
Yes, Happy Meadows is located nearby (10.1 miles away).
What minerals are in the water at Hartsel Hot Springs?
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 6.6 (slightly acidic).
Is it safe to soak at Hartsel Hot Springs?
With care. At 126°F Hartsel Hot Springs is hot enough to need short sessions, fifteen to twenty minutes, and plenty of water. Enter slowly and get out if you feel light-headed.