How many eruptions have there been in the Cascades during the last 4,000 years?
Eruptions in the Cascades have occurred at an average rate of one to two per century during the last 4,000 years. Future eruptions are certain.
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Volcano hazards: A national threat Volcano hazards: A national threat
When the violent energy of a volcano is unleashed, the results are often catastrophic. The risks to life, property, and infrastructure from volcanoes are escalating as more and more people live, work, play, and travel in volcanic regions. Since 1980, 45 eruptions and 15 cases of notable volcanic unrest have occurred at 33 U.S. volcanoes. Lava flows, debris avalanches, and explosive...
Authors
Water Resources Division U.S. Geological Survey
What are volcano hazards? What are volcano hazards?
No abstract available.
Authors
Bobbie Myers, Steven R. Brantley, Peter Stauffer, James W. Hendley
Volcanoes! Volcanoes!
Volcanoes is an interdisciplinary set of materials for grades 4-8. Through the story of the 1980 eruption of Mount St. Helens, students will answer fundamental questions about volcanoes: "What is a volcano?" "Where do volcanoes occur and why?" "What are the effects of volcanoes on the Earth system?" "What are the risks and the benefits of living near volcanoes?" "Can scientists forecast...
Authors
Water Resources Division U.S. Geological Survey
Related
Filter Total Items: 15
Volcano hazards: A national threat Volcano hazards: A national threat
When the violent energy of a volcano is unleashed, the results are often catastrophic. The risks to life, property, and infrastructure from volcanoes are escalating as more and more people live, work, play, and travel in volcanic regions. Since 1980, 45 eruptions and 15 cases of notable volcanic unrest have occurred at 33 U.S. volcanoes. Lava flows, debris avalanches, and explosive...
Authors
Water Resources Division U.S. Geological Survey
What are volcano hazards? What are volcano hazards?
No abstract available.
Authors
Bobbie Myers, Steven R. Brantley, Peter Stauffer, James W. Hendley
Volcanoes! Volcanoes!
Volcanoes is an interdisciplinary set of materials for grades 4-8. Through the story of the 1980 eruption of Mount St. Helens, students will answer fundamental questions about volcanoes: "What is a volcano?" "Where do volcanoes occur and why?" "What are the effects of volcanoes on the Earth system?" "What are the risks and the benefits of living near volcanoes?" "Can scientists forecast...
Authors
Water Resources Division U.S. Geological Survey
Updated Date: July 29, 2026