";s:4:"text";s:4208:"The Oregon Department of Geology and Mineral Industries (DOGAMI) has produced a series of earthquake hazard maps including liquifaction hazards. The largest earthquake within 30 miles of Portland, OR was a 3.9 Magnitude in 1989. They offer a neighborhood coalition by neighborhood coalition account of known earthquake faults, flood plains and other dangers, including hazardous material sites, steep slopes and forested areas at risk of fire.
The USGS database shows that there is a 30.92% chance of a major earthquake within 50km of Portland, OR within the next 50 years. Earthquake Information for Portland, Oregon. The map shows which buildings in the tri-county area were built in each era. Enter your Oregon address for a custom report on your seismic risks and how to prepare. 2010 Fault Activity Map of California. The City of Portland has an interactive map that shows the earthquake risk for different locations in the region. Are you Ready? ... 03-13-2018 – updated Cascadia Earthquake Hazard layer to include Portland metro data from DOGAMI Open-File Report O-18-02. Pacific Northwest seismic hazards maps. Structures predating 1974, when Oregon enacted its first statewide building code, would suffer the worst damage in a 9.0-magnitude earthquake. Risk MAP is a national FEMA program to work with states, tribes, territories, and local communities to evaluate and better understand their current flood risk, as well as the actions that can be taken to mitigate and become more resilient against future risk. Buildings constructed after 1993, when western Oregon adopted its first seismic standards, are considered the most likely to withstand a severe earthquake. Oregon’s Tsunami Risk: ... most often, when an earthquake shifts the seabed and displaces all of the water above it.