Seaside, Oregon Harry Yeh Oregon State University Seaside, Oregon, Tsunami Pilot Study – Modernization of FEMA Flood Hazard Maps A Tsunami Pilot Study was carried out in the Seaside area to develop a Tsunami Hazard Analysis methodology as part of FEMA's Map Modernization Program.
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Oregon State University
Tsunami sources of Cascadia Subduction Earthquake
Earthquake on January 26, 1700
At Willapa Bay, Washington
Old Japanese Documents
on Coastal Flooding on January 1700
Map of 100- and 500-year flood zones overlaid on FEMA Flood Insurance Rate Maps.
Seaward limit is mean lower low water.
Line showing extent of deposits from tsunami generated by 1700 Cascadia earthquake is included for comparison.
Evacuation distance to high-ground safe haven from the beach is approximately 2 km.
Nishiki Tower in Japan
Two Tsunami Shelters
Existing well-engineered reinforced concrete structures might be used as shelters