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Firm Map

Moderate-to low-risk areas are identified on the Flood Insurance Rate Maps (FIRMs) as:

Shaded Zone X- These properties are in moderate to the low-risk area. The risk is reduced in these areas but not eliminated.

Zone X- These properties are in an area of overall lower risk. High-risk areas are identified on the FIRMs as:

Zones AE, A, AH, AR, A99, or AO - These properties have at least a 26 percent chance of flooding over the life of a 30-year mortgage.

Zones VE or V - These properties also have at least a 26 percent chance of flooding over the life of a 30-year mortgage. In addition, these properties face hazards associated with coastal storm waves and storm surge.

For more information about understanding your flood risk, visit

CLICK HERE to learn more about reading FIRM maps.


Effective FIRMs

A FIRM will generally show a community's base flood elevations, flood zones, and floodplain boundaries. As a property owner/renter, you can use this map to get a reliable indication of what flood zone you're in. The City of Corpus Christi joined the NFIP in 1970 and has undergone several FIRM revisions since. The latest community-wide FIRM revision was in 1992.

Preliminary FIRMs

FEMA is currently completing the Nueces County Coastal Study, which is the most comprehensive study to date. As a result of this study, FIRMs will be revised to adjust the Base Flood Elevations (BFEs) and Special Flood Hazard Areas (SFHAs) within Nueces County.




Map Documents

You also can view the Index Map and individual FEMA maps listed below:

Index Map »

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CLICK HERE to view the City of Corpus Christi Interactive Map


The FEMA Flood Map Service Center (MSC) is the official public source for flood hazard information produced in support of the National Flood Insurance Program (NFIP). Search your address at

FEMA Flood Map Service Center »



Send us your questions about zones, maps, development, insurance or other FEMA topics. We will respond as soon as possible.

Online Question Form »