Flood Insurance Rate Maps (FIRMs) are official maps on which the Federal Emergency Management Agency (FEMA) has delineated flood hazard areas and risk zones. They show the location of a property relative to flood hazard areas, which is one of the factors used to calculate flood insurance rates. More information on FIRMs is available at the floodsmart.gov website.
FIRMs are used by:
The county partnered with FEMA to produce updated Preliminary Digital Flood Insurance Rate Maps (DFIRMs) for Snohomish County. FEMA issued a Final Letter of Determination regarding the DFIRMs on December 19, 2019. The DFIRMs were adopted by the county in June 2020.
Both the current FIRMS and the newly adopted DFIRMs can be viewed in person at Snohomish County Planning and Development Services (PDS) office in Everett. The access the current FIRMS online, visit the FEMA Map Service Center. To access the updated DFIRMS, click here.