Volcanic Hazards with Regard to Siting Nuclear-Power Plants in the Pacific Northwest [open pdf - 17KB]
"This report identifies volcanoes in the Cascade Range of Washington, Oregon, and California that constitute a potential threat to people and works of man, and assesses the hazards that could result from future eruptions of these volcanoes. The assessments are based on the premise that past eruptive histories of volcanoes provide the best basis for judging the most likely kinds, frequencies, and magnitudes of future volcanic events. These assessments can be used to evaluate volcanic hazards at sites of proposed nuclear power plants, as well as for more general purposes of long-range land-use planning."
United States Geological Survey Open-File Report 87-297
United States Geological Survey: http://www.usgs.gov/