FEMA National Flood Hazard Layer

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API Information

Version:v1.4.0
Region:US
Used for:Evaluating flood risk, supporting insurance underwriting, ensuring regulatory compliance, and integrating FEMA flood zones into property screening and planning tools.

Overview

The LightBox FEMA National Flood Hazard Layer (NFHL) API provides access to geospatial flood risk data as defined by the Federal Emergency Management Agency (FEMA). It delivers current effective flood hazard information, including flood zones and base flood elevations, which are used to evaluate property-level flood exposure and to support compliance with the National Flood Insurance Program (NFIP). This API empowers professionals in insurance, lending, site selection, and environmental due diligence to integrate FEMA risk layers into their spatial workflows.

Key Capabilities

  • ✓Retrieve FEMA flood hazard records using LightBox Parcel ID, Assessment ID, Address ID, or Structure ID
  • ✓Query flood hazard data by spatial geometry (WKT) with optional buffer distance for contextual analysis
  • ✓Search by property address to assess flood zone designation and elevation data
  • ✓Integrate flood zone overlays into interactive map controls for spatial visualization and analysis

Scope

Hazard Data

  • Flood Zones (e.g., AE, VE, X)
  • Base Flood Elevations (BFEs)
  • Special Flood Hazard Areas (SFHAs)

Source

  • Federal Emergency Management Agency (FEMA)

Additional Information

FEMA National Flood Hazard Layer Overview

Learn about the key features and use cases of the FEMA National Flood Hazard Layer API.

FEMA National Flood Hazard Layer Reference

Explore the technical details of the FEMA National Flood Hazard Layer API endpoints.

FEMA National Flood Hazard Layer Release Notes

View the latest updates and changes to the FEMA National Flood Hazard Layer API.