Lost Man Hot Spring
Lost Man Hot Spring is a primitive thermal spring listed in Mohave County, Arizona Hot Springs near Boulder City. No soak temperature is on record; the geothermal source is reported around 112°F — verify conditions before visiting. Access is subject to admission fees, and clothing policy is unconfirmed — always confirm before visiting. Explore nearby springs with our GPS Springs Near Me Finder.
Seasonal Soaking & Best Time to Visit
Desert thermal zones experience high summer ambient heat. The cooler months from late autumn to early spring offer the most refreshing ambient conditions for open-air soaking.
Fact Sheet & Geothermal Specifications
| Reported Soak Temp | Not reported |
| Source Temp (Historical) | 112°F |
| Trail Access | Recorded coordinates — access unverified |
| Access Fee | Paid / Resort Fees |
| Clothing Policy | Unknown — Verify Locally |
| Pet Policy | Reported No Pets |
| Geothermal Data Reference | NOAA Thermal Springs List (1980 archive) |
| Check Land Status | Arizona Land Manager (BLM) |
Verification & Sources
Compiled from public directory records and community reports — no named source is on file for this listing. Treat details as reported and verify before visiting.
Reviewed September 2026 · Treat all details as reported — verify before visiting · How we verify our data
Detailed Description
GNIS-catalogued hot spring on the Arizona side of the Colorado River in Black Canyon, Lake Mead NRA, just south of Hoover Dam near Lost Man Canyon — a real but minor thermal feature: a hot stream at river level with no soaking pool. NOTE: in Arizona, not California. Fee: Lake Mead NRA fees may apply. Off-trail technical terrain with dryfalls; extreme desert heat; no services.
Directions & Trailhead Access
Kingman Wash Access Road off US-93 (AZ side) to the end parking area, then an off-trail canyon descent (Class 2/3) to the river; or approach by kayak/boat.
Frequently Asked Questions: Lost Man Hot Spring
Is Lost Man Hot Spring free?+
Lost Man Hot Spring is a developed thermal facility near Boulder City that requires paid admission.
What temperature is Lost Man Hot Spring?+
No soak temperature is on record for Lost Man Hot Spring; the geothermal source is reported around 112°F. Always test water temperature before entering.
Is Lost Man Hot Spring clothing optional?+
Directory records do not confirm the clothing policy at Lost Man Hot Spring — verify current rules before visiting.
How do you access Lost Man Hot Spring?+
Lost Man Hot Spring is a recorded location in Mohave County. Exact access, parking, and land status are not verified — check with the local land manager (BLM/USFS/NPS) before visiting.
Where to Stay Near Lost Man Hot Spring
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Community Soaker Reports
Visitor-submitted reports — not independently verifiedLost Man Hot Spring is a documented geothermal feature in Mohave County, Arizona, compiled from public directory records and community reports. Reported source temperature: 112°F. Visitor details — fees, access status, clothing and pet policies — are community-reported. Always confirm current conditions with the land manager before visiting.
Reference: NOAA Thermal Springs List for the United States (1980 archive) · Historical inventory data — not current conditions
No Community Reviews Yet
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