USGS HOME
Contact USGS

  • About
  • Observatories
  • Activity
  • Education
  • Publications

California Volcano Observatory (CalVO)

Overlay represents area within CalVO's jurisdiction.
Map Legend
Monthly Update
Monday, June 01, 2015 2:25 PM
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
 
California Volcano Observatory's mission
As a part of the U.S. Geological Survey's Volcano Hazards Program, the California Volcano Observatory aims to advance scientific understanding of volcanic processes and lessen the harmful impacts of volcanic activity in the volcanically active areas of California and Nevada.

NEWS   (archive)
Young Volcanoes in California & Nevada1

CalVO and Lassen Fact Sheets Published
December 10, 2014
We are pleased to announce the publication of two new Fact Sheets relevant to CalVO.