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Volcanic-Hazards Zones (April 1, 1980)

St. Helens, United States, 1980

Faust, L. (1980). Volcanic-Hazards Zones (April 1, 1980). U.S. Geological Survey.



This map was produced by an official agency, but is NOT the most recent, most complete, or main operational map. For the current operational hazard map, please consult the proper institutional authorities.


Click on image for full-size map. If link seems broken, try the archived version.

Map Data

Map ID4248
Hazard Process(es)Lahars; PDCs
Hazard Zone PresentationHazard process-focused: Most hazard processes are separated by hazard process type on a main map panel
Temporal ScaleCrisis, or short-term, map (hours to decades)
Spatial ScaleVolcano and surrounding area
Publication FormatFigure in a hazard assessment or mitigation plan
Zonation Method(s)Geologic history
Zonation Model(s)
Scenario(s) ConsideredSize, VEI, or intensity
Hazard Zone Label(s)Hazard process name
Probability Definition(s)Scenarios imply probability
PurposeCrisis management and response: Intended to be used for managing, responding to, and taking action during an eruption; often includes evacuation routes, access restrictions, actions to take, etc.
AudienceMultiple audiences (usually the public, civil authorities, and land-use planners)
Language(s)English
Basemap(s)Simple or sketch map
Basemap overlay(s)Street map
DiemsionalityPlanimetric (2D or map) view
Color SchemeCategorical/Qualitative
Volcanic Alert Level System
Go to Global Volcanism Program page for St. Helens →