Hot Brook Springs

Fall River County, South Dakota · Near Hot Springs
43.4520°N, 103.5080°W · 3,625 ft
75°F 39°F air · Good soaking weather 3,625 ft Short Walk Camping nearby (1.1 mi)
Aerial view of the ground around Hot Brook Springs LiDAR bare-earth view of the same ground around Hot Brook 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.

Hot Brook Springs is a tepid spring three miles from the town of Hot Springs, South Dakota, in Fall River County. Despite the name, the water is cooler than a bath. It is a USGS site with a water analysis on file from 2012. Cold Brook Campground is about a mile away. Who owns it, and if you can visit, is not recorded.

Location

Around 3,600 feet, three feet or so of snow each winter, twenty inches of precipitation. A short walk, a bit over a hundred yards, separates it from an unnamed road. Cold Brook Campground is close enough to make a base. No land manager appears.

The record favors winter. Short walk in. The 2012 analysis found the water close to neutral, modest in dissolved solids, with iron among the minerals. Ownership and access are blank; check before you go. No fee listed. Cold Brook Campground is a mile off.

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 Brook Springs.

Setting
Canyon floor
Steep ground climbs away on both sides of the spring.
Highest ground nearby
484 ft above the spring
Within a quarter mile, to the northeast
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
57 milliwatts per square meter of heat flow

That's close to the US average of 65. It's higher than at 0% 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
28°
Jan
27°
Feb
39°
Mar
45°
Apr
55°
May
68°
Jun
75°
Jul
72°
Aug
64°
Sep
48°
Oct
38°
Nov
29°
Dec
Annual Precip: 20.3 in Annual Snow: 37.3 in
Best Time to Visit
February Air 27°F · Water 75°F · +48° contrast
January Air 28°F · Water 75°F · +47° contrast
December Air 29°F · Water 75°F · +47° contrast
February offers 48°F more contrast than July
Current Conditions
39°F
Clear NW 20.7 mph 81% Good soaking weather
Today 75° Low 53° Sunny
Wednesday 86° Low 58° Sunny 1% precip
Thursday 73° Low 59° Chance Rain Showers 54% precip
Spring is +2° warmer
Friday 84° Low 53° Mostly Sunny 9% precip
Saturday 76° Low 50° Chance Rain Showers 39% precip
Water Chemistry Sampled 2012-08-05

The water at Hot Brook Springs is slightly alkaline (pH 7.5) with 398 mg/L total dissolved solids.

pH 7.5 Slightly Alkaline
pH influences mineral absorption through skin
Higher mineral concentration for therapeutic soaking
Calcium 69 mg/L
May support bone density and joint health
Magnesium 26 mg/L
Known for muscle relaxation and stress relief
Sodium 37 mg/L
Supports circulation and skin hydration
Sulfate 69 mg/L
Traditionally used for skin conditions and inflammation
Chloride 45 mg/L
Natural antiseptic with skin health benefits
Iron 0 µg/L
Iron-rich springs may support circulation
Nearby Camping
Nearby Camping
Cold Brook Campground 1.1 mi away

Overview Located less than 1 mile north of Hot Springs, South Dakota sits one of the area's most perferred campgrounds. At the south end of Cold Brook Campground sits Cold Brook Lake, a popular destination for those looking to take a swim at the beach, snorkel in the crystal clear water or wet a line while trying to catch a variety of fish species. At the north end of the campground sits a wildlife area with a two-track trail that is good for a morning stroll or a short bike ride with the pos...

Reservable Yes
Reserve on Recreation.gov →
Temperature
75°F
Warm Hot Boiling
Water Temp 75°F (24°C)
Avg Air Temp 49°F
Above Ambient +26°F
Mild soaking conditions September
Access
Road Access Short Walk
Distance to Road 349 ft
Frequently Asked Questions
What is the water temperature at Hot Brook Springs?
Hot Brook Springs has a water temperature of 75°F (24°C). This is a warm thermal spring.
Where is Hot Brook Springs located?
Hot Brook Springs is located in Fall River County, South Dakota at 3,625 feet elevation, near Hot Springs. Coordinates: 43.4520°N, 103.5080°W.
How do I get to Hot Brook Springs?
Hot Brook Springs has Short Walk road access (349 ft from the road).
Can I camp near Hot Brook Springs?
Yes, Cold Brook Campground is located nearby (1.1 miles away).
What minerals are in the water at Hot Brook Springs?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 7.5 (slightly alkaline). Total dissolved solids measure 398 mg/L.
Sources: USGS NWIS