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Find Portland floodplain maps. View Federal Emergency Management Agency (FEMA) Flood Insurance Rate Maps (FIRMs) for Portland and the City's Composite February 1996 Flood Inundation Area Map. Find flood hazard regulations and search all of FEMA's current and past map products on its website.
City of Portland community flood hazard mapping
City of Portland FEMA flood hazard mapping
Use the Map Index below to find a location's boundary number. Use this number to find the corresponding FEMA Flood Map.
Do you need this information in an alternative format? Please call Jason Butler-Brown at 503-823-4936.
Find out if your property is in a floodplain
- Search FEMA's flood maps by address
- Search Portland Maps to determine if your property is within the FEMA Special (100-year) Flood Hazard Area (SFHA) or the Composite February 1996 Flood Inundation Area:
- Type in an address to begin your search.
- On the right side of the screen, select the Public Safety tab.
- Scroll down to the Hazard section to find out if a property is in or near the FEMA Special Flood Hazard Area (SFHA) and/or the Composite February 1996 Flood Inundation Area.
Environmental Services has helpful information for protecting your property if it is located in a floodplain.