File:Peter Dierks Joers House.JPG — cc by-sa 3.0
Big Chalybeate Spring flows at 79 degrees Fahrenheit within Hot Springs National Park in Garland County, emerging 16.3 degrees above ambient temperature just 43 meters from the nearest road. This spring offers roadside accessibility to genuine thermal water with remarkably clean mineral composition featuring very low sodium at 1.3 milligrams per liter.
The spring emerges at 689 feet elevation in the foothills of the Ouachita Mountains within Hot Springs National Park. The landscape features forested mountainous terrain where average annual temperature reaches 62.7 degrees Fahrenheit with annual precipitation of 50.9 inches and minimal snow at 3.5 inches. The water chemistry—TDS 196 mg/L, calcium 67 mg/L, minimal magnesium at 2.9 mg/L—reflects shallow aquifer circulation rather than deep thermal circulation, creating unusually pure thermal water for the region.
History of Big Chalybeate Spring
Big Chalybeate Spring's name reflects its historical identification by mineral composition. Chalybeate" refers to iron-bearing springs
though the water shows only trace iron (13 micrograms per liter). The spring has served visitors to Hot Springs since the 1800s as part of the region's thermal spring tradition. Its accessible location and clean mineral water made it popular for both bathing and drinking historically."
Is Big Chalybeate Spring worth visiting?
Best for
- Easy day trips
- Overnight camping trips
Big Chalybeate Spring is well suited for easy day trips and overnight camping trips.
Annual Precip: 50.9 in
Annual Snow: 3.5 in
January
Air 42°F · Water 79°F · +37° contrast
February
Air 46°F · Water 79°F · +34° contrast
December
Air 45°F · Water 79°F · +34° contrast
January offers 40°F more contrast than July
Recent Temperature
68.9°F
(20.5°C)
Measured Jan 27, 1972
The water at Big Chalybeate Spring is neutral (pH 7.2) with 196 mg/L total dissolved solids.
pH influences mineral absorption through skin
Higher mineral concentration for therapeutic soaking
May support bone density and joint health
Known for muscle relaxation and stress relief
Supports circulation and skin hydration
Traditionally used for skin conditions and inflammation
Natural antiseptic with skin health benefits
Overview
Brady Mountain Campground delights visitors with its family-friendly facilities, fabulous views and idyllic placement on Arkansas's Lake Ouachita. The lake attracts visitors who come for the crystal clear waters and bountiful fishing opportunities. Click here for the Lake Ouachita Virtual Tour.
Recreation
A unique way to explore the lake is to follow the Geo-Float Trail, coined as the first water-based interpretive trail included in the National Trails System. The self-guided boat...
Reserve on Recreation.gov →
Swimsuit & towel
Water bottle
Stay hydrated, especially in hot water
Camping gear
Nearby camping at Brady Mountain
Trash bag
Pack out what you pack in
0 miles from Hot Springs National Park, AR
USGS Quad: HOT SPRINGS NORTH 7.5 · PP 492: 3.0 · NOAA: 1.0 · AMS Map: LITTLE ROCK
What is the water temperature at Big Chalybeate Spring?
Big Chalybeate Spring has a water temperature of 79°F (26°C). This is a warm thermal spring.
Where is Big Chalybeate Spring located?
Big Chalybeate Spring is located in Garland County, Arkansas at 689 feet elevation, near Hot Springs National Park. Coordinates: 34.5420°N, 93.0240°W.
How do I get to Big Chalybeate Spring?
Big Chalybeate Spring has Roadside road access (141 ft from the road).
Can I camp near Big Chalybeate Spring?
Yes, Brady Mountain is located nearby (14.0 miles away).
What minerals are in the water at Big Chalybeate Spring?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 7.2 (neutral). Total dissolved solids measure 196 mg/L.
Is it safe to soak at Big Chalybeate Spring?
Big Chalybeate Spring is generally safe for soaking at its recorded temperature. Access may be on private land or unconfirmed — verify current conditions before visiting. Always tell someone your plans before visiting remote hot springs.
Is Big Chalybeate Spring crowded?
Big Chalybeate Spring is accessible from a paved road, making it easy to reach. Weekends and holidays may be busier — consider visiting on a weekday for a quieter experience.
What should I bring to Big Chalybeate Spring?
Essentials for Big Chalybeate Spring: swimsuit, towel, water bottle, camping gear, a trash bag to pack out what you pack in.