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Map showing annual probability of 1 cm or more of tephra accumulation in Washington, Oregon, and northern California from eruptions throughout the Cascade Range.

Cascades Range (regional, USA only), United States, 1997

Figure 4 in: Sherrod, D.R., Mastin, L.G., Scott, W.E. & Schilling, S.P. (1997). Volcano hazards at Newberry Volcano, Oregon. U.S. Geological Survey, Open-File Report 97-513, 14 p. https://doi.org/10.3133/ofr97513



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


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Map Set

Sherrod, D.R., Mastin, L.G., Scott, W.E. & Schilling, S.P. (1997). Volcano hazards at Newberry Volcano, Oregon. U.S. Geological Survey, Open-File Report 97-513, 14 p. https://doi.org/10.3133/ofr97513
https://doi.org/10.3133/ofr97513

Other Maps In Set:

Map Data

Map ID1176
Hazard Process(es)Tephra fall
Hazard Zone PresentationSingle hazard: A single hazard process is represented on a main map panel
Temporal ScaleBackground, or long-term, map
Spatial ScaleRegional
Publication FormatFigure in a hazard assessment or mitigation plan
Zonation Method(s)Scenario modeling
Zonation Model(s)Unnamed tephra model [Hoblitt et al. (1987); Hoblitt & Scott (2011)] (Hoblitt et al. 1987; Hoblitt & Scott 2011)
Scenario(s) ConsideredAnalog volcano(es)
Hazard Zone Label(s)Numeric probability
Probability Definition(s)Annual numeric probability
PurposeMultiple: intended for multiple purposes including general hazard awareness, planning, and crisis management
AudienceMultiple audiences (usually the public, civil authorities, and land-use planners)
Language(s)English
Basemap(s)Administrative boundaries (e.g. county, park, intl.)
Basemap overlay(s)
DiemsionalityPlanimetric (2D or map) view
Color SchemeDark to Light (greyscale)
Volcanic Alert Level System