FEMA National Flood Hazard Layer for Massachusetts (Tile Service)

The National Flood Hazard Layer (NFHL) dataset represents the current effective flood risk data for those parts of the country where maps have been modernized by the Federal Emergency Management Agency (FEMA). The data in this service was published by FEMA as of July 18, 2025 (Latest Study Effective Date = 07/08/2025; Latest LOMR Effective Date = 07/09/2025). Also see the Feature Service and Tile service. See full details.

The National Flood Hazard Layer (NFHL) dataset represents the current effective flood risk data for those parts of the country where maps have been modernized by the Federal Emergency Management Agency (FEMA).

Federal Emergency Management Agency (FEMA) National Flood Hazard Layer (effective data only).  Refer to GIS Web Services for the FEMA National Flood Hazard Layer (NFHL) for map service information.  Data is updated as needed.

MassGIS Data: FEMA National Flood Hazard Layer (NFHL) Full MassGIS metadata: https://www.mass.gov/info-details/massgis-data-fema-national-flood-hazard-layer

FEMA Service for current National Flood Hazard Layers For more information, visit: https://hazards.fema.gov/femaportal/wps/portal/NFHLWMS

The National Flood Hazard Layer (NFHL) is a geospatial database that contains current effective flood hazard data. FEMA provides the flood hazard data to support the National Flood Insurance Program.