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Lahars and Their Effects: Pathways of Destruction
This United States Geological Survey (USGS) website covers general information about lahars and their effects on areas surrounding volcanoes. Information given includes a description of lahars, what triggers a lahar, and the economic and environmental damage they inflict. Links to USGS websites documenting specific lahar case studies are found throughout the page.
Intended for grade levels:
  • Middle (6-8)
  • High (9-12)
  • College (13-14)
Type of resource:
  • Visual:
    • Photograph
  • Text:
    • Ref. material
  • Geological Sciences:
    • Geology
  • Natural hazards
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Information presented on this website is considered public information and may be distributed or copied. Use of appropriate byline/photo/image credit is requested.
DLESE Catalog ID: DLESE-000-000-001-647
Related resources:
This resource is part of 'Types and Effects of Volcano Hazards'
This resource references 'Photo glossary of volcano terms'
This resource contains 'Earthquake on June 6, 1994, Triggers Landslides and Catastrophic Lahar Near Nevado del Huila Volcano, Colombia'
This resource contains 'Intense Rainfall During Hurricane Mitch Triggers Deadly Landslide and Lahar at Casita Volcano, Nicaragua, on October 30, 1998'
This resource contains 'Deadly Lahars from Nevado del Ruiz, Colombia: November 13, 1985'
This resource contains '"What's that cloud upriver?" An eyewitness account of a lahar'
Resource contact / Creator / Publisher:
Publisher: United States Geological Survey, Volcano Hazards Program