• An aerial view of Old Faithful erupting taken from Observation Point with the Old Faithful Inn to the side.

    Yellowstone

    National Park ID,MT,WY

Yellowstone in Winter: Supporting Science & Technical Documents

The National Park Service conducts ongoing monitoring in winter for soundscapes, air quality, wildlife, and personal health and exposure. The agency uses such monitoring as part of its ongoing winter use management. Below is a list of annual reports for each of these subjects.

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Did You Know?

Upper Geyser Basin Hydrothermal Features on a Winter Day.

Yellowstone contains approximately one-half of the world’s hydrothermal features. There are over 10,000 hydrothermal features, including over 300 geysers, in the park.