General

U.S. Geological Survey Volcano Hazards Program - volcano studies, current information, and worldwide volcanic activity

Hostspots: Mantle Thermal Plumes - part of the This Dynamic Planet website where traces of undersea volcanic chains are illustrated on a companion map.

Specific US areas

• Cascades Volcano Observatory - resources and links particularly those in the western U.S., Hawaii, and Alaska; current volcanic activity information, guides about volcanoes, activities, videos, etc.
• Alaska Volcano Observatory -current information about Alaska's volcanoes, FAQs, images, maps, and more.
• Hawaii Volcano Observatory - information about Hawaii's active volcanoes with many graphics and features.
• Long Valley Volcano Observatory - find out about this not widely known volcanic area in eastern California. Long Valley Volcanic System extends from Mammoth Mountain to Mono Lake.
• Yellowstone Volcano Observatory - current seismic and potential volcanic activity in Yellowstone National Park.
• Effects of Mount St. Helens Eruption on Selected Lakes in Washington, (Circular 850G) - overview of how the major 1980 eruption impacted the lakes (water chemistry, sediment supply, and biology) in the region around the volcano.

Geology of National Parks - features examples of volcanoes and volcanic features in national parks including:

• Crater Lake National Park, OR
• Hawaii Volcanoes National Park, HI
• Lava Beds National Monument, CA
• Mount St. Helens National Volcanic Park, WA
• Mount Rainier National Park, WA
• Mojave National Preserve, CA
• Pinnacles National Monument, CA
• Sunset Crater National Monument, AZ
• Yellowstone National Park, WY

Reports

Volcanoes - overview of the nature of volcanoes, types of volcanoes and volcanic eruptions, submarine volcanoes, geysers, fumaroles, hot springs, plate tectonics and volcanoes, extraterrestrial volcanoes, volcanology research, and humans living with volcanoes.

Living with Volcanoes, (Circular 1073) - the 1980 cataclysmic eruption of Mount St. Helens in Washington ushered in a decade marked by more worldwide volcanic disasters and crises than any other in recorded history. Volcanoes killed more people (over 28,500) in the 1980's than during the 78 years following the 1902 eruption of Mont Pelee (Martinique). This summarizes the Volcano Hazards Program: its goals and activities, key accomplishments, and future plans.