Hot Springs Valley Look only

Hot Springs Valley reads 83°F at the source (NCEI, historical reading). Managed by Lassen Volcanic National Park (checked 2026-08-19).

Cool Warm Hot Boiling-class 83°F

83°F / 28°C

Warm range at the source — bath-warm

Reading from the NCEI Thermal Springs List (historical reading, 1981 compilation). Source temperature — lower pools usually run cooler.

Water temperatures change with flow and season — test before entering, and never submerge your head in warm natural water. CDC guidance on Naegleria fowleri.

The rule here

This is a thermal feature to see, not a place to get in the water. Lassen Volcanic National Park puts it this way:

“Do not touch or enter hydrothermal water. Even if it is not hot enough to burn you, prolonged exposure to sulfuric acid in the water and gases can cause damage to your skin and lungs.”

— Lassen Volcanic National Park, checked 2026-08-19

Worth knowing: A hydrothermal feature inside Lassen Volcanic National Park. The park publishes no separate page for this feature; its park-wide hydrothermal-area rule applies.

Nearby springs

Identity, coordinates, and temperature quoted from the NCEI Thermal Springs List (historical reading, 1981 compilation).