Image Title  Abstract Category Last Updated
    1996 Flood Extent This data is maintained by and obtained from Metro GIS. Click the link above to view the Metro GIS metadata for this dataset. Hazard 02/07/24 10:25 AM
    FEMA Flood Hazard Areas The FEMA Flood Hazard Layer represents the location and attributes of flood insurance risk zones from the Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and any Letters of Map Revision (LOMRs) that have been issued against those databases since their publication date. It is updated on a monthly basis. The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs. The FIRM Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The floodway, 100-year floodplain/SFHA (Special Flood Hazard Area), and the 500-year floodplain are all derived from this dataset. Hazard 08/05/23 10:19 AM
    Flood Insurance Rate Map Index Polygons representing the index of FEMA flood insurance rate maps. Hazard 01/03/11 10:49 AM
    Floodplain - 1996 Portland Flood Area of inundation in the 1996 flood, as mapped by the US Army Corps of Engineers Hazard 02/27/19 11:49 AM
    landslide_inv_deposits_bes_pdx Hazard 07/30/20 05:31 PM
    landslides_bes_pdx Hazard 05/04/20 05:21 PM
    lust_bes_pdx Leaking Underground Storage Tank data is downloaded periodically from Oregon Department of Environmental Quality. Hazard 04/04/23 07:33 AM
    Portland Flood Response Stages This layer reflects the expected impact and response required for each phase of a flood event. Hazard 08/04/20 05:16 PM
    potential_flood_hazard_pdx Hazard 12/26/01 04:01 PM
    Title 24 Composite 1996 Flood Hazard Area The map is a combination of the February 1996 Flood Inundation Area, shown on theMetro Flood Management Area map and the results of new hydraulic modeling onthe Lower Willamette River applied to the Central and South Reaches of theriver. For more information see: https://www.portland.gov/bds/floodplain-development-regulation-updates. Hazard