Castle Hot Springs (Arizona)

Yavapai County, Arizona · Near Black Canyon City
33.9828°N, 112.3619°W · 2,120 ft
60°F air · Good soaking weather 2,120 ft Roadside Camping nearby (13.0 mi)
Aerial view of the ground around Castle Hot Springs (Arizona) LiDAR bare-earth view of the same ground around Castle Hot Springs (Arizona)
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.

The record holds a second entry under the Castle Hot Springs name in Yavapai County, this one placed almost on the road, with Black Canyon City about fifteen miles off. No temperature is attached to this record, so use the resort's own word on how hot the water runs. The USGS carries the point with a 1979 chemistry that reads slightly alkaline with sodium and sulfate among the minerals. Landowner and access are both blank.

Location

Roadside. The closest road passes about two hundred feet away, though its name is not on file. Low desert in the Hieroglyphic Mountains, where snow is a rumor and the temperature averages in the low seventies across the year. Rain is scant. Horsethief Cabin, about thirteen miles away, is the only camp shown, and nothing sits closer.

No best months are given on this record. The approach is a few steps from the road. Since this is a resort property, expect the operator to control entry and plan to ask first. The water has no temperature on file, so do not assume a soak. Horsethief Cabin is the single overnight listing. Nothing on fees.

History of Castle Hot Springs (Arizona)

The resort holds National Register status and, per Wikipedia, has lately been restored. The water chemistry on file dates to a June 1979 sample.

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 Castle Hot Springs (Arizona).

Setting
Canyon floor
Steep ground climbs away on both sides of the spring.
Highest ground nearby
327 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
68 milliwatts per square meter of heat flow

That's close to the US average of 65. It's higher than at 4% 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
53°
Jan
55°
Feb
63°
Mar
70°
Apr
76°
May
89°
Jun
90°
Jul
90°
Aug
84°
Sep
73°
Oct
62°
Nov
52°
Dec
Annual Precip: 12.0 in Annual Snow: 2.5 in
Current Conditions
60°F
WSW 3.6 mph 93% Good soaking weather
Tuesday 93° Low 77° Chance Showers And Thunderstorms 39% precip
Wednesday 89° Low 75° Showers And Thunderstorms Likely 60% precip
Thursday 91° Low 74° Chance Showers And Thunderstorms then Mostly Sunny 32% precip
Friday 96° Low 76° Sunny 3% precip
Saturday 98° Low 77° Sunny 4% precip
Water Chemistry Sampled 1979-06-22

The water at Castle Hot Springs (Arizona) is slightly alkaline (pH 7.7). It is notably rich in sulfate (traditionally used for skin conditions and inflammation) and chloride (natural antiseptic with skin health benefits).

pH 7.7 Slightly Alkaline
pH influences mineral absorption through skin
Calcium 29 mg/L
May support bone density and joint health
Magnesium 2 mg/L
Known for muscle relaxation and stress relief
Sodium 220 mg/L
Supports circulation and skin hydration
Sulfate 220 mg/L
Traditionally used for skin conditions and inflammation
Chloride 140 mg/L
Natural antiseptic with skin health benefits
Where to Stay

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Nearby Camping
Horsethief Cabin 13.0 mi away

Overview Horsethief Cabin is situated in a clearing of Ponderosa pines at an elevation of over 6,000 feet in the Bradshaw Mountains of the Prescott National Forest. The original cabin was built in 1939 as quarters and a staging area for Forest Service crews charged with protecting the southern end of the Bradshaw Mountains against wildfires. The cabin was remodeled and modernized over the years, but eventually fell into disuse by the 1980s. The historic structure now enjoys a second life as a...

Reservable Yes
Reserve on Recreation.gov →
Temperature
No data recorded
Avg Air Temp 71°F
Access
Road Access Roadside
Distance to Road 215 ft
Frequently Asked Questions
Where is Castle Hot Springs (Arizona) located?
Castle Hot Springs (Arizona) is located in Yavapai County, Arizona at 2,120 feet elevation, near Black Canyon City. Coordinates: 33.9828°N, 112.3619°W.
How do I get to Castle Hot Springs (Arizona)?
Castle Hot Springs (Arizona) has Roadside road access (215 ft from the road).
Can I camp near Castle Hot Springs (Arizona)?
Yes, Horsethief Cabin is located nearby (13.0 miles away).
What minerals are in the water at Castle Hot Springs (Arizona)?
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 7.7 (slightly alkaline).
Sources: USGS NWIS, Wikipedia