Debris Avalanche
Debris Avalanche
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Hazards Summary for Mount Hood
Mount Hood is an active volcano close to rapidly growing communities, recreation areas, and major transportation routes and therefore imposes heightened risk.
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Lahars Pose the Greatest Hazard Risk at Mount Hood
Lahars can be generated by hot volcanic flows that melt snow and ice or by landslides (debris avalanches) from weakened rock forming the steep upper flanks of the volcano.
Geology and History Summary for Mount Hood
Mount Hood is Oregon's highest peak and an active volcano of the Cascade Range.
Eruption History of Mount Hood, Oregon
Mount Hood, which has been active for at least 500,000 years, occupies a long-lived focus of volcanic activity that has produced ancestral Hood-like volcanoes for the past 1.5 million years.
Lahars and Debris Avalanches at Mount Hood, Oregon
Both eruptive and noneruptive processes at Mount Hood generate several types of landslides and water-mobilized flows that sweep the volcano’s flanks and surge down river valleys.