Hawaiian Volcano Observatory
Features information about Kilauea, Mauna Loa, and other volcanoes in the Hawaiian Islands, eruption reports, Volcano Watch articles, earthquakes, types of volcanic hazards, and more.
Cascades Volcano Observatory
USGS provides information about Mount St. Helens current and past activity as well as monitoring the other volcanoes of the Cascade Range.
Yellowstone Volcano Observatory (YVO)
Monitoring the largest volcanic system in North America. Includes monitoring data, volcanic history of the Yellowstone Plateau, photo galleries, and FAQs.
Usu Volcano Observatory
Includes photos of the volcano. From the institute of Seismology and Volcanology, Hokkaido University.