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USGS YVO Monitors Volcanoes in 6 U.S. States

The formal Yellowstone Volcano Observatory (YVO) includes a consortium of 8 organizations who's scientists collaborate to study and monitor the active geologic processes and hazards of the Yellowstone Plateau. The U.S. Geological Survey arm of YVO is also responsible for monitoring and reporting activity for volcanoes in the southwestern U.S. These volcanoes are primarily dispersed volcanic fields that behave differently than Yellowstone. Valles Caldera in New Mexico is the exception, which currently hosts a hydrothermal system and resurgent dome. The area has had 2 caldera-forming eruptions in the past 1.6 million years.

YVO Area of Responsibility

Wyoming, Montana, & eastern Idaho

  • Yellowstone


  • Black Rock Desert Volcanic Field
  • Markagunt Plateau Volcanic Field


  • Dotsero


  • San Francisco Volcanic Field
  • Uinkaret Volcanic Field

    New Mexico

  • Zuni-Bandera Volcanic Field
  • Red Hill-Quemado Volcanic Field
  • Carrizozo Lava Flow