Ross Lake Hot Springs
Marblemount, Washington, United States
- Location
- Marblemount, Washington, United States
- Water type
- iron-rich
- Temperature
- 38 °C
- pH
- 6.3
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Bio-active
LowHigh
Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
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Ross Lake Hot Springs, near Marblemount, Washington, offers iron-rich water at 38°C in an open-air pool. Surrounded by North Cascades forest, the site suits wild bathing.
Insider tip — Ross Lake Hot Springs sits within the North Cascades National Park Complex near the Canadian border, accessible only by floatplane, boat, or a lengthy backcountry trek. The geothermal seeps along the lakeshore create warm pools at the water's edge surrounded by dense temperate rainforest. The extreme remoteness means the site sees very few visitors and offers an exceptional wilderness hot spring experience. Check current access conditions with the National Park Service before planning a visit.
Nearby
Frequently asked questions
How hot is the water?
The water is neutral here, around 38 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features iron-rich water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.