Castilla Springs

Utah County, Utah · Near Mapleton
40.0380°N, 111.5290°W · 4,920 ft
104°F 72°F air · Good soaking weather 4,920 ft Short Walk Camping nearby (5.8 mi)

Castilla Springs comes out hot, comfortably above a bath, about six miles from Mapleton. A 1967 analysis shows the water loaded with dissolved minerals, salty, with sulfate and chloride high. No owner and no public access status appear in the record, so whoever manages it today is unknown here. Utah County is where it sits, with Diamond campground close by.

Location

A short walk of five hundred feet or so separates the spring from the road, and that road carries no name on file. Winter is serious in this corner of Utah: six feet of snow most years and close to twenty inches of precipitation. Diamond campground is under six miles off.

December to February is the window the record gives, though with that much snow the short walk may be in drifts. The water is above 100 degrees, so lower yourself in gradually. Nothing on file confirms public access. The mineral reading is nearly sixty years old. No fee is mentioned.

Monthly Climate
25°
Jan
29°
Feb
37°
Mar
43°
Apr
54°
May
68°
Jun
76°
Jul
74°
Aug
65°
Sep
50°
Oct
37°
Nov
25°
Dec
Annual Precip: 19.0 in Annual Snow: 72.3 in
Best Time to Visit
January Air 25°F · Water 104°F · +79° contrast
December Air 25°F · Water 104°F · +79° contrast
February Air 29°F · Water 104°F · +75° contrast
January offers 51°F more contrast than July
Current Conditions
72°F
Mostly Cloudy SSE 49.7 mph 41% Good soaking weather
Labor Day 75° Low 49° Sunny 4% precip
Spring is +29° warmer
Tuesday 79° Low 48° Sunny
Spring is +25° warmer
Wednesday 82° Low 50° Sunny
Spring is +22° warmer
Thursday 83° Low 52° Sunny 2% precip
Spring is +21° warmer
Friday 84° Low 54° Sunny 3% precip
Spring is +20° warmer
Water Chemistry Sampled 1967-10-20

The water at Castilla Springs is slightly alkaline (pH 7.9) with 6610 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 7.9 Slightly Alkaline
pH influences mineral absorption through skin
Higher mineral concentration for therapeutic soaking
Calcium 469 mg/L
May support bone density and joint health
Magnesium 80 mg/L
Known for muscle relaxation and stress relief
Sodium 1,680 mg/L
Supports circulation and skin hydration
Sulfate 1,400 mg/L
Traditionally used for skin conditions and inflammation
Chloride 2,320 mg/L
Natural antiseptic with skin health benefits
Where to Stay

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Nearby Camping
Diamond 5.8 mi away

Overview Diamond Campground is located among shady cottonwoods and willow at an elevation of 5,200 feet. The family sites are located just 15 miles from Spanish Fork and the group sites are 2-3 miles further. Visitors enjoy exploring local trails and relaxing along the stream.Recreation The stream and creek offer fishing for brown and cutthroat trout. An interpretive nature trail winds through the campground along the stream. Hiking, biking and off-road vehicle trails are abundant in the area...

Reservable Yes
Reserve on Recreation.gov →
Temperature
104°F
Warm Hot Boiling
Water Temp 104°F (40°C)
Avg Air Temp 49°F
Above Ambient +55°F
Good soaking conditions September
Access
Road Access Short Walk
Distance to Road 505 ft
Frequently Asked Questions
What is the water temperature at Castilla Springs?
Castilla Springs has a water temperature of 104°F (40°C). This is considered a hot spring, well above body temperature.
Where is Castilla Springs located?
Castilla Springs is located in Utah County, Utah at 4,920 feet elevation, near Mapleton. Coordinates: 40.0380°N, 111.5290°W.
How do I get to Castilla Springs?
Castilla Springs has Short Walk road access (505 ft from the road).
Can I camp near Castilla Springs?
Yes, Diamond is located nearby (5.8 miles away).
What minerals are in the water at Castilla Springs?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 7.9 (slightly alkaline). Total dissolved solids measure 6,610 mg/L.
Sources: USGS NWIS