The volcanoes of the cascades arise because of the subduction of the Juan de Fuca Plate beneath its North American counterpart. From Mount Baker in the north to Crater Lake in the south the hazards these volcanoes pose are assessed by the Cascades Volcano Observatory (CVO) across the states of Washington, Oregon and Idaho. The remaining volcanoes to the south are assessed by the California Volcano Observatory (CalVO) In general, the research focus has centred on St. Helens due to the large amount of available and collected data as well as its relative ease of access. However there are many other important volcanoes in the area which shouldn't be forgotten!
