description Turquoise Pool Overview
Turquoise Pool is a geothermal hot spring in the Lower Geyser Basin of Yellowstone National Park, Wyoming. It is named for the blue-green appearance of its water, which contrasts with the surrounding mineral ground and vegetation. The feature belongs to Yellowstone's broader hydrothermal system, where underground heat drives hot springs, geysers, and related formations. Visitors encounter it as a natural thermal feature rather than as a developed bathing pool.
help Turquoise Pool FAQ
Where is Turquoise Pool in Yellowstone?
Turquoise Pool is associated with Yellowstone's Midway Geyser Basin in Wyoming, the same basin that contains Grand Prismatic Spring and Excelsior Geyser. National Park Service records identify it as a Midway Basin feature. [NPS digital archive](https://www.nps.gov/features/yell/slidefile/thermalfeatures/hotspringsterraces/midwaylower/Page-1.htm)
Why does Turquoise Pool look blue-green?
Its color comes from the interaction of geothermal water, dissolved minerals, and microorganisms adapted to the hot-spring environment. The blue-green appearance contrasts with the mineral crust and vegetation around the pool.
Is Turquoise Pool a geyser that erupts on a schedule?
No, it is described as a hot spring rather than a predictable geyser. That makes it different from Old Faithful, whose eruptions are monitored and predicted by Yellowstone staff.
Can visitors walk up to or swim in Turquoise Pool?
Visitors should remain on designated boardwalks and trails because Yellowstone thermal water can reach boiling temperatures. Soaking in Yellowstone hot springs is prohibited, and the park specifically warns that thermal ground can be unstable. [NPS hot-springs safety guidance](https://www.nps.gov/yell/learn/nature/hotsprings.htm)
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