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Official, Insert/poster-size map with accompanying report
Volcanic-Hazard Zonation for Mount St. Helens, Washington
Plate 1 in: Wolfe, E.W. & Pierson, T.C. (1995). Volcanic-Hazard Zonation for Mount St. Helens, Washington, 1995. U.S. Geological Survey, Open-File Report 95-497, 12 p., 1 plate. https://doi.org/10.3133/ofr95497
Official, Insert/poster-size map with accompanying report
Volcanic-hazard zones in the Cascades Range
Plate 1 in: Hoblitt, R. P., Miller, C. D., & Scott, W. E. (1987). Volcanic hazards with regard to siting nuclear-power plants in the Pacific Northwest. U.S. Geological Survey, Open-File Report 87-297. https://doi.org/10.3133/ofr87297
Official, Map sheet or poster
Volcanic-hazards zones, originally drawn on USFS map (approximately 1/2 in. = 1 mi), April 1, 1980.
Figure 454 in: Miller, C.D., Mullineaux, D.R. & Crandell, D.R. (1981). Hazards assessments at Mount St. Helens. In: Lipman, P. W. & Mullineaux, D. R. (Eds.) The 1980 eruptions of Mount St. Helens, Washington. U.S. Geological Survey, Professional Paper 1250, p. 789-802. https://doi.org/10.3133/pp1250
Official, Interactive web-based map
Washington Geologic Information Portal - Volcanic Hazards (USGS)
Washington Department of Natural Resources. Geologic Information Portal.
Official, Figure in hazard assessment
Zones of volcanic risk at Mount St. Helens August 1981
Figure 3 in: Newhall, C.G. (1982). A method for estimating intermediate- and long-term risks from volcanic activity, with an example from Mount St. Helens, Washington. U.S. Geological Survey, Open-File Report 82-396, 59 p. doi: 10.3133/ofr82396
Official, Figure in hazard assessment
Zones of volcanic risk at Mount St. Helens February 1980
Figure 1 in: Newhall, C.G. (1982). A method for estimating intermediate- and long-term risks from volcanic activity, with an example from Mount St. Helens, Washington. U.S. Geological Survey, Open-File Report 82-396, 59 p. doi: 10.3133/ofr82396
Official, Figure in hazard assessment
Zones of volcanic risk at Mount St. Helens February 1982
Figure 4 in: Newhall, C.G. (1982). A method for estimating intermediate- and long-term risks from volcanic activity, with an example from Mount St. Helens, Washington. U.S. Geological Survey, Open-File Report 82-396, 59 p. doi: 10.3133/ofr82396
Official, Figure in hazard assessment
Zones of volcanic risk at Mount St. Helens June 1980
Figure 2 in: Newhall, C.G. (1982). A method for estimating intermediate- and long-term risks from volcanic activity, with an example from Mount St. Helens, Washington. U.S. Geological Survey, Open-File Report 82-396, 59 p. doi: 10.3133/ofr82396