Interactive Volcano Maps

Explore the geology, tectonics, and hazards of Western California's volcanic fields in a new interactive geonarrative website.

A geonarrative summary of a USGS report that provides a broad perspective on California’s exposure to volcanic hazards. By integrating volcanic hazard information with geospatial data on populations, infrastructure, and resources, the results provide estimates of impacts to people and our environment if an eruption were to occur.