Iron Mountain Hot Springs

Garfield County, Colorado · Near Glenwood Springs
39.5553°N, 107.3362°W · 5,740 ft
60°F air · Good soaking weather 5,740 ft Roadside Camping nearby (16.3 mi)
Aerial view of the ground around Iron Mountain Hot Springs LiDAR bare-earth view of the same ground around Iron Mountain 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.

Iron Mountain Hot Springs is a hot springs resort on the banks of the Colorado River in Glenwood Springs, Garfield County, right in town. No temperature is on file for this record, so the page cannot say how hot the pools run. What the 1965 USGS sample does show is extremely salty water, with dissolved solids in the tens of thousands of milligrams per liter, and an alkaline pH.

Location
1 miles from Glenwood Springs, CO

The river and the road are both right there; the record puts the source within a few dozen feet of the road. Glenwood Springs sits at mid elevation. Snow is heavy, around eight and a half feet a year, with moderate rain. Thompson Creek Campground is the closest camp on file, about sixteen miles out. Land owner and designation are blank.

no best months is on record for this one. Fee and hours are absent from the record, as is any current pool temperature, so ask the resort. The chemistry reading is sixty years old and describes the source, which may bear no relation to what is in a pool. Thompson Creek Campground, sixteen miles.

History of Iron Mountain Hot Springs

Wikipedia describes Iron Mountain Hot Springs as a therapeutic natural hot springs resort on the Colorado River in Glenwood Springs. The USGS chemistry sample dates to October 1965.

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 Iron Mountain Hot Springs.

Setting
Hillside
The spring sits on a steep slope that climbs to the east.
Highest ground nearby
282 ft above the spring
Within a quarter mile, to the east
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
148 milliwatts per square meter of heat flow

That's about 2½ times the US average of 65. It's higher than at 93% 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
25°
Jan
29°
Feb
37°
Mar
43°
Apr
52°
May
67°
Jun
73°
Jul
71°
Aug
64°
Sep
48°
Oct
34°
Nov
25°
Dec
Annual Precip: 22.3 in Annual Snow: 101.9 in
Current Conditions
60°F
E 15.3 mph 81% Good soaking weather
Today 78° Low 52° Chance Showers And Thunderstorms 45% precip
Wednesday 77° Low 54° Chance Showers And Thunderstorms 47% precip
Thursday 76° Low 51° Showers And Thunderstorms 76% precip
Friday 76° Low 48° Showers And Thunderstorms Likely 64% precip
Saturday 77° Low 46° Chance Showers And Thunderstorms 32% precip
Water Chemistry Sampled 1965-10-10

The water at Iron Mountain Hot Springs is slightly alkaline (pH 8.5) with 22000 mg/L total dissolved solids. It is notably rich in calcium (may support bone density and joint health), magnesium (known for muscle relaxation and stress relief), and sodium (supports circulation and skin hydration).

pH 8.5 Slightly Alkaline
pH influences mineral absorption through skin
Higher mineral concentration for therapeutic soaking
Calcium 753 mg/L
May support bone density and joint health
Magnesium 138 mg/L
Known for muscle relaxation and stress relief
Sodium 7,150 mg/L
Supports circulation and skin hydration
Sulfate 2,210 mg/L
Traditionally used for skin conditions and inflammation
Chloride 10,500 mg/L
Natural antiseptic with skin health benefits
Where to Stay

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Nearby Camping
Thompson Creek Campground 16.3 mi away

The Thompson Creek Recreation Management Area is located just a few miles southwest of Carbondale and provides beautiful, remote recreational opportunities. On the North end of the RMA is the Lorax trail, which is a popular non motorized route. In the southwest corner of the area is the Thompson Creek campground and trail, which winds along Thompson Creek to views of the rare geologic “fin” formations. There are 4 shaded campsites along the creek with metal fire rings. There are not picnic...

Fee No fee
Stay limit April-August: 7 Days, September-March: 14 days.
Reserve on Recreation.gov →
Mile-High Advisory 5,740 ft

Iron Mountain Hot Springs sits at 5,740 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
No data recorded
Avg Air Temp 47°F
Access
Road Access Roadside
Distance to Road 39 ft
Frequently Asked Questions
Where is Iron Mountain Hot Springs located?
Iron Mountain Hot Springs is located in Garfield County, Colorado at 5,740 feet elevation, near Glenwood Springs. Coordinates: 39.5553°N, 107.3362°W.
How do I get to Iron Mountain Hot Springs?
Iron Mountain Hot Springs has Roadside road access (39 ft from the road).
Can I camp near Iron Mountain Hot Springs?
Yes, Thompson Creek Campground is located nearby (16.3 miles away). No fee.
What minerals are in the water at Iron Mountain Hot Springs?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 8.5 (slightly alkaline). Total dissolved solids measure 22,000 mg/L.
Sources: USGS NWIS, Wikipedia