Cascades Volcano Observatory

U.S. Geological Survey
General Information Product 64
version 1.0

Geologic Hazards at Volcanoes

By Bobbie Myers and Carolyn Driedger


cross-section of a volcano showing magma and the different hazards of an eruption

Most volcano hazards are associated with eruptions. However, some hazards, such as lahars and debris avalanches, can occur even when a volcano is not erupting.

Download this report as an 18" x 27" PDF file (gip64.pdf; 140 kB)

For questions about this report, contact Carolyn Driedger.

Suggested citation and version history

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