National Flood Hazard Layer Data for New Mexico

The National Flood Hazard Layer incorporates Digital Flood Insurance Rate Map databases and subsequent map revisions published by FEMA. It provides geospatial flood hazard information, including primary risk classifications for 1-percent and 0.2-percent annual chance flood events, derived from Flood Insurance Studies and new mapping data.

Use Cases

• Analyze spatial patterns of the 1-percent-annual-chance flood event and 0.2-percent-annual-chance flood event risk classifications for property risk assessment.
• Integrate geospatial flood hazard layers with property data to model potential flood insurance impacts in areas like Bernalillo or Santa Fe.
• Map the extent of Floodway and Special Flood Hazard Area (SFHA) designations to support land-use planning and emergency management.
• Assess coastal flood risk by examining Coastal Flooding and Coastal Barrier Resources System (CBRS) layers within the dataset.

Strengths

• Data is derived from authoritative FEMA Flood Insurance Studies and published Flood Insurance Rate Maps.
• Horizontal control specifications are consistent with mapping at a detailed scale of 1:12,000.
• Includes multiple flood risk classifications such as the 1-percent and 0.2-percent annual chance flood events.

Limitations

• The dataset's last known update was in December 2020, which may not reflect recent flood hazard revisions or LOMRs.
• Specific data volume metrics like row count, column count, and file size are unknown.
• Geographic coverage for this specific instance appears focused on New Mexico, limiting national-scale analysis.

Provenance

Source

Federal Emergency Management Agency (FEMA).

Collection Method

Derived from Digital Flood Insurance Rate Map databases, Flood Insurance Studies, and new mapping data.

Freshness

Last updated 2020-12-02.

Geography

New Mexico, United States (based on tags).