National Flood Hazard Layer Data for New Mexico

National Flood Hazard Layer (NFHL) data incorporates Digital Flood Insurance Rate Map (DFIRM) databases and subsequent Letters Of Map Revision (LOMRs) published by FEMA. The data details primary flood risk classifications including the 1-percent-annual-chance and 0.2-percent-annual-chance flood events. It is derived from Flood Insurance Studies, published Flood Insurance Rate Maps, and new mapping data.

Use Cases

• Map 1-percent-annual-chance and 0.2-percent-annual-chance flood event zones for risk assessment using the NFHL data.
• Analyze flood hazard information from Digital Flood Insurance Rate Maps (DFIRMs) to support community planning and insurance rate setting.
• Identify areas of minimal flood risk within the dataset to inform land-use and development decisions.
• Track changes in flood hazard zones by incorporating Letters Of Map Revision (LOMRs) issued against the base DFIRM databases.

Strengths

• Data incorporates all published DFIRM databases and subsequent LOMRs from FEMA, ensuring official hazard mapping is included.
• Horizontal control specifications are consistent with mapping at a detailed scale of 1:12,000.
• The dataset is organized and available as State or US Territory data sets, providing geographic segmentation.

Limitations

• The specific row count, column structure, and sample data are unavailable, limiting pre-analysis assessment.
• The last update was in December 2020, potentially missing recent flood hazard revisions or LOMRs.
• Data availability for specific layers like S_Label_Pt and S_Label_Ld is excluded from the Standard DFIRM datasets in the NFHL.

Provenance

Source

Federal Emergency Management Agency (FEMA).

Collection Method

Derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses, and new mapping data.

Freshness

Last updated 2020-12-02.

Geography

New Mexico, United States (based on tags).