In February of 2020, the Federal Emergency Management Agency (FEMA) required Seattle to update our floodplain regulations to include FEMA’s new Flood Insurance Rate Maps (FIRM) and the Flood Insurance Study (FIS). FEMA’s adoption of the new map and study also included an audit of Seattle’s floodplain regulations. Through the audit, FEMA identified several places in Seattle’s code that needed to be amended in order to comply with the minimum standards in the Code of Federal Regulations (CFR). FEMA included the following required amendments in their audit: new definitions and updates to existing definitions to meet minimum standards; updates to the regulatory floodway development standards; and the inclusion of newly mapped coastal high hazard flood zone (VE zone) and required regulations for this zone.
The City currently has interim Floodplain Development Regulations in effect through February 2022 so that the City’s floodplain map and development regulations are consistent with federal law. Here is a link to the Interim Floodplain Development Regulations.
The Federal Emergency Management Agency (FEMA) required updates to maps and regulations based on the February 2020 updated floodplain map for King County. This map (called the Flood Insurance Rate Map) identifies properties that are at risk of flooding and is used to determine which properties are required to have flood insurance.