This thermal spring in Lake Mead National Recreation Area flows at approximately 95°F within the dramatic canyon country where the Colorado River created America's largest reservoir. Located at just 700 feet elevation, the spring offers exceptional geological and hydrological context.
The spring requires a substantial hike of approximately 7,120 feet from the nearest road across rugged desert terrain within Lake Mead's canyon system. The landscape showcases the Colorado River's immense power in carving through colorful rock formations. Water flows through arid desert where annual precipitation barely reaches 6 inches.
History of Hot Spring
This thermal spring emerges from terrain shaped by the Colorado River's geological work and regional geothermal systems. The USGS-documented temperature of 34.8°C reflects shallow geothermal circulation in the basin-and-range province. The location near Hoover Dam connects the spring to modern water resource history.
The spring lies within Lake Mead National Recreation Area with open public access on National Park Service lands. However, the long hiking approach and remote canyon location mean few visitors reach this thermal feature. Summer heat intensifies the desert experience substantially. Bring ample water for the return hike.
Is Hot Spring worth visiting?
Best for
- Mineral-rich therapeutic bathing
Hot Spring is well suited for mineral-rich therapeutic bathing.
Annual Precip: 6.0 in
Annual Snow: 0.4 in
Recent Temperature
94.6°F
(34.8°C)
Measured May 13, 2019
The water at Hot Spring is slightly alkaline (pH 8.2) with 2790 mg/L total dissolved solids. It is notably rich in calcium (may support bone density and joint health), sodium (supports circulation and skin hydration), and sulfate (traditionally used for skin conditions and inflammation).
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
Swimsuit & towel
Water bottle
Stay hydrated, especially in hot water
Sun protection
Limited shade in warm climate
Trash bag
Pack out what you pack in
0 miles from Boulder City, AZ
USGS Quad: RINGBOLT RAPIDS 7.5 · NOAA: 1.0 · AMS Map: KINGMAN
What is the water temperature at Hot Spring?
Hot Spring is classified as hot. An exact temperature measurement has not been recorded.
Where is Hot Spring located?
Hot Spring is located in Clark County, Arizona at 700 feet elevation, near Boulder City. Coordinates: 35.9840°N, 114.7420°W.
How do I get to Hot Spring?
Hot Spring has Hike road access (1.3 mi from the road).
Is Hot Spring free to visit?
Hot Spring has Open access. It is managed by National Park Service.
What minerals are in the water at Hot Spring?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 8.2 (slightly alkaline). Total dissolved solids measure 2,790 mg/L.
Is it safe to soak at Hot Spring?
Hot Spring is generally safe for soaking at its recorded temperature. Always tell someone your plans before visiting remote hot springs.
Is Hot Spring crowded?
Hot Spring sees varying levels of visitors depending on the season and day of the week.
What should I bring to Hot Spring?
Essentials for Hot Spring: swimsuit, towel, water bottle, sun protection (hat, sunscreen), a trash bag to pack out what you pack in.