The United States Geological Survey (USGS) Cascades Volcano Observatory (CVO) provides this listing of volcano and hazard maps and graphics available from its website. The hazards covered include: ashfall and tephra, calderas, cinder cones, composite volcanoes, debris avalanches and volcanic landslides, earthquakes and seismicity, lava domes, mudflows, debris flows and lahars, plate tectonics and sea-floor spreading, shield volcanoes, stratovolcanoes, and volcanic and hydrologic hazards.
http://vulcan.wr.usgs.gov/Graphics/
Copyright 2006-2010
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