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Open-File Report 95–492

Volcano Hazards in the Mount Adams Region, Washington

By William E. Scott, Richard M. Iverson, James W. Vallance, and Wes Hildreth

Thumbnail of and link to report PDF (0.5 MB)Introduction

Mount Adams, one of the largest volcanoes in the Cascade Range, dominates the Mount Adams volcanic field in Skamania, Yakima, Klickitat, and Lewis counties and the Yakima Indian Reservation of south-central Washington. The nearby Indian Heaven and Simcoe Mountains volcanic fields lie west and southeast, respectively, of the 1250-km2 (500-mi2) Adams field (plate1). Even though Mount Adams has been less active during the past few thousand years than neighboring Mounts St. Helens, Rainier, and Hood, it assuredly will erupt again. Future eruptions will probably occur more frequently from vents on the summit and upper flanks of Mount Adams than from vents scattered in the volcanic fields beyond. Large landslides and lahars that need not be related to eruptions probably pose the most destructive, far-reaching hazard of Mount Adams. The purpose of these maps and booklet is to (1) describe the kinds of hazardous geologic events that will likely occur in the future at Mount Adams and at other volcanoes in the region, (2) outline the areas that will most likely be affected by these events, and (3) recommend actions that individuals and government agencies can take to protect lives and property.

Link to the Data

Links to the Other Hazard Assessments

First posted December 22, 2010
Revised September 18, 2013

For additional information:
Contact CVO
Volcano Science Center, Cascades Volcano Observatory
U.S. Geological Survey
1300 SE Cardinal Court, Building 10, Suite 100
Vancouver, WA 98683-9589
http://vulcan.wr.usgs.gov/

This report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.


Suggested citation:

Scott, W.E., Iverson, R.M., Vallance, J.W., and Hildreth, W., 1995, Volcano hazards in the Mount Adams region, Washington: U.S. Geological Survey Open-File Report 95–492, 11 p., 2 plates, scales 1:500,000, and 1:200,000, http://pubs.usgs.gov/of/1995/0492/.



Contents

Introduction

Hazardous Events at Mount Adams

Eruptions in Other Nearby Volcanic Fields

Events at Distant Volcanoes Can Impact the Mount Adams Region

Volcano-Hazard-Zonation Map

How Large an Eruption is Possible at Mount Adams?

Hazard Forecasts and Warnings

Protecting Our Communities and Ourselves from Volcanic Hazards

Additional Reading

Two plates


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