FEMA NFHL
National Flood Hazard Layer of effective flood zones and FIRM panels.
| Publisher | Federal Emergency Management Agency |
|---|---|
| Coverage | United States
Bounding box (EPSG:4326): -179.2, -14.6, 180, 71.4 |
| Licence | LicenseRef-Public-Domain
Publisher's wording: Public domain |
| Themes | us-federal-hazards, open-data-sources |
| Update cadence | Not stated |
| Formats | Not stated |
| Status | active |
| Last verified | 2026-11-05 |
| Notes | The public NFHL service holds effective data only; preliminary and pending services exist separately and are not for rating flood insurance. TLS 1.2 only. |
| Recipe |
Runs with registry_fetch
|
| Related | Not stated |
Access endpoints
| Type | URL | Layer or index | Auth | Notes |
|---|---|---|---|---|
http | https://www.fema.gov/flood-maps/national-flood-hazard-layer | Not stated | none | Not stated |
arcgis-rest | https://hazards.fema.gov/arcgis/rest/services/public/NFHL/MapServer | 28 | none | Flood Hazard Zones (S_FLD_HAZ_AR). Always pass a bbox; the national layer is very large. |
ogc-wms | https://hazards.fema.gov/arcgis/rest/services/public/NFHLWMS/MapServer/WMSServer | Not stated | none | WMS of the effective NFHL (FEMA's service page, read 2026-11-05). |
ogc-wfs | https://hazards.fema.gov/arcgis/services/public/NFHL/MapServer/WFSServer | Not stated | none | At most 1,000 features per request; use the Map Service Center's state and county downloads for bulk. |