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Sawmill Geyser

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description Sawmill Geyser Overview

Sawmill Geyser is a fountain-type geyser located in the Upper Geyser Basin of Yellowstone National Park, named during the 1871 Hayden Geological Survey by expedition member Antoine Schoenborn. The geyser received its name due to the rhythmic, sawing sound it makes during eruptions, which can reach heights of up to 35 feet. Eruption intervals are irregular, typically occurring every 1-3 hours and lasting 30-50 minutes, making it one of the more frequently active geysers in the park's Sawmill Group, which also includes several smaller geothermal features.

help Sawmill Geyser FAQ

Where is Sawmill Geyser located?

Sawmill Geyser is in Yellowstone National Park's Upper Geyser Basin. It is a fountain-type geyser, meaning its eruptions burst upward in irregular jets rather than forming a single narrow column like some cone geysers. [Source](https://www.nps.gov/places/000/sawmill-geyser.htm)

Why is it called Sawmill Geyser?

The name refers to the rhythmic, sawing sound associated with its eruptions. The name was recorded during the 1871 Hayden Geological Survey and is associated with expedition member Antoine Schoenborn.

Is Sawmill Geyser as predictable as Old Faithful?

No. Sawmill Geyser is irregular, while Old Faithful has a much more useful eruption-prediction pattern for visitors. Yellowstone's National Park Service notes that geyser behavior changes as underground plumbing and water conditions change.

What powers Sawmill Geyser?

Its heat comes from Yellowstone's active volcanic and hydrothermal system, where groundwater is heated underground and forced toward the surface. The National Park Service describes Yellowstone's geysers as part of a dynamic hydrothermal system rather than isolated hot-water fountains. [Source](https://www.nps.gov/yell/learn/nature/hydrothermal-systems.htm)

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