Skip to Main Content View Text-Only

The City of Portland, Oregon

Charter, Code and Policies

City of Portland



More Contact Info

EMG-1.09 - Earthquake Response Appendix


Non-Binding City Policy




WHEREAS, the Cascadia Subduction Zone puts the Pacific Northwestat risk for a catastrophic earthquake of magnitude (M) 9.0 or higher; and

WHEREAS, the City also straddles three identified crustal faults that stretch the length of Portland capable of generating moderately large earthquakes of M 5.0-6.8; and

WHEREAS, the Earthquake Response Appendix supplements the City’s Basic Emergency Operations Plan (BEOP) by describing how the City will respond to and begin recovering from a strong earthquake; and

WHEREAS, the purpose of the Earthquake Response Appendix is to provide a consistent and flexible framework for Portland City government, regional partners and private entities to work in a coordinated manner in response to a large magnitude earthquake; and

WHEREAS, the Earthquake Response Appendix applies to all City bureaus, staff and elected officials and acknowledges the City alone cannot respond to the myriad challenges posed by a significant seismic event; and

WHEREAS, the City depends on its strong partnerships with public and private sector organizations and the general public to develop a resilient community able to withstand any emergency; and




NOW, THEREFORE, BE IT RESOLVED, that the Earthquake Response Appendix to the Basic Emergency Operations Plan is hereby adopted as a non-binding policy, substantially as set forth in Exhibit A, attached to this resolution.

Link to Exhibit A - Earthquake Response Appendix  (PDF Document, 11 MB)



Resolution No. 36922, adopted by City Council May 2, 2012.