This is the homepage of the United States Geological Survey's (USGS) Cascades Volcano Observatory (CVO). The site features news and events, updates on current activity of Cascade Range volcanoes, and information...

This report provides an overview of the changes that occurred in lakes in the region around Mount St. Helens following the eruption of May 18, 1980. Topics include water chemistry, sediment supply, and biology. Other...

This on-line book, published by the United States Geological Survey (USGS), covers the 1980 eruption of Mount St. Helens in Washington state. There is a discussion of the events leading up to the eruption, as well as an...

The University of Washington Digital Collections unit continues to produce numerous fine digital collections, spanning a variety of disciplines, and this latest offering is no exception. This particular collection is...

"After 18 years of relative quiescence, Mount St. Helens volcano recaptured the world's attention when it showed signs of reawakening in September 2004." This USGS website offers online factsheets on Mount St. Helens...