Description: Point features representing the locations of Extremely Hazardous Substances as defined in the Oregon State Fire Marshal's "Community Right to Know" program. In 1985, the Oregon Legislature passed the Oregon Community Right to Know (CR2K) and Protection Act. The purpose of this law is to provide first responders and the public with information about hazardous substances in their response areas and neighborhoods. The law directs the Office of State Fire Marshal to survey business and government facilities for information about the presence of hazardous substances and to collect information about incidents involving hazardous substances. The law further directs the OSFM to provide planning and training assistance to local jurisdictions on hazardous substance emergency response and preparedness. This particular dataset is a subset of facilities that Portland Fire & Rescue's HazMat program has concern about.
Copyright Text: Portland Fire & Rescue, Oregon State Fire Marshal's Office
Description: Potentially hazardous faults are those that have been identified by the US Geological Survey as having moved in the last 1.6 million years. These faults may be the source of future damaging earthquakes, and severe ground disruption is possible within the buffer zones.
Copyright Text: Oregon Department of Geology and Mineral Industries (DOGAMI) and U.S. Geological Survey (USGS)
Description: This feature class represents polygons that delineate the hard scarps and scarp flanks. These head scarps or uppermost scarps in many cases expose the primary failure plane (surface of rupture) and flanks or shear zones.
Copyright Text: William J. Burns and Kate Mickelson, OR Dept. of Geology & Mineral Resources
Description: This map uses the methods of HAZUS-MH MR4 (FEMA 2011 in references) to create new liquefaction suceptibility data for Oregon. HAZUS assigns susceptibility classes based on geology. For this map, the geology was primarily taken from OGDC 5 (Ma and others, 2009, in refernces) and SLIDO 2 (Burns and others, 2011 in references) with some coming from published liquefaction studies. The methods and data used to make this map are described in detail in : Madin, I.P., and Burns, W.J., 2013, Ground motion, ground deformation, tsunami inundation, coseismic subsidence, and damage potential maps for the 2012 Oregon Resilience Plan for Cascadia Subduction Zone Earthquakes; Oregon Department of Geology and Mineral Industries Open-File Report O-13-06.
Copyright Text: Ian P. Madin, William J. Burns, Oregon Department of Geology and Mineral Industries
Description: FEMA Special Flood Hazard Area (SFHA), which is also commonly referred to as the 100-year floodplain. Based on November 2010 FEMA maps, with subsequent "Letters of Map Revision" (LOMR) information incorporated as approved by FEMA.
This is the floodplain to use for all regulatory and insurance purposes. From FEMA: The land area covered by the floodwaters of the base flood is the Special Flood Hazard Area (SFHA) on NFIP maps. The SFHA is the area where the NFIP's floodplain management regulations must be enforced and the area where the mandatory purchase of flood insurance applies. The SFHA includes Zones A, AO, AH, A1-30, AE, A99, AR, AR/A1-30, AR/AE, AR/AO, AR/AH, AR/A, VO, V1-30, VE, and V.
Copyright Text: Portland Bureau of Planning and Sustainability