Letter of Map Amendment (LOMA) 

Revalidation Statuses 

What do the LOMA revalidation statuses and colors in the National Flood Hazard Layer 

(NFHL) Viewer mean? 

The LOMA point locations in the NFHL Viewer now included revalidation statuses (where applicable). Those 

revalidation statuses are: 

▪ Valid (Purple): This LOMA is current with the latest FIRM panel, has not been revalidated, and remains valid. It

has “No Revalidation Status” or was “Not Incorporated” into an update for the county or community.

▪ Incorporated (Pink): This LOMA is no longer valid. The modifications affected by this Letter of Map Change

(LOMC) have been incorporated into a revised FIRM panel. Note: This status is rare as most amendments are

not mappable.

▪ Contact Community for Revalidation Status (Brown): This LOMA went into effect before the current FIRM went

into effect and does not yet have a revalidation status. Please contact the local community official for more

information

▪ Reevaluation Needed (Orange): This LOMA includes multiple lots or structures, and some or all require new

determinations to be made. Therefore, it cannot be revalidated. Please contact the local community official for

more information.

▪ Superseded (Gray): This LOMA has not been incorporated into the revised FIRM because:

▪ it is being superseded by new or revised flood hazard data

OR

▪ the information available was not sufficient to make a determination

The possible reasons each may be superseded include: 

1. Insufficient information available to make a determination

2. Lower Adjacent Grade and Lower Finished Floor are below the proposed Base Flood Elevation (BFE)

3. Lower Found Elevation is below the proposed Base Flood Elevation

4. Revised hydrologic and hydraulic analyses

5. Revised topographic information

6. Superseded by another LOMC
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LOMA Point Locations 

LOMA point locations, as shown on the NFHL Viewer, are approximate. The exact official location of the LOMA can be 

found in the legal property description on the LOMA Determination Document. See Figure 1: LOMA Determination

Document below. 

Figure 1. LOMA Determination Document 

Where can I find the LOMA point location with revalidation statuses? 

The best place to access the LOMA point location is through the NFHL Viewer. For more information on the NHFL 

database, please see the NHFL web page on fema.gov. 

Geographic Information Systems (GIS) users may import an NFHL GIS service with the LOMA point data directly into 

their GIS desktop client or web application. Additional information on available services may be found on the FEMA 

GIS Services Page. 

LOMA data users may directly download the zip file containing the LOMA shapefiles and metadata, which is updated 

nightly, at LOMA Point Shapefile.
LOMA Point Locations 

LOMA point locations are approximate. The official location of the LOMA is referenced in the legal property description in 

the LOMA determination document.

The LOMA Database 

The LOMA database may include LOMAs that are no longer effective. To be certain a particular LOMA is currently valid, 

please check the relevant documentation on the FEMA Map Service Center. 

Relevant documents can be found for an individual community by choosing “Search All Products”, selecting the appropriate 

State and then appropriate County. Relevant documents may include: LOMAs found in the “Effective Products” and “LOMC” 

folders, as well as revalidations. 

Users may also want to contact the local community official for additional information. 

FEMA Map Service (MSC) 

To view flood maps and data, access a range or other flood hazard products, and take advantage of tools for better 

understanding flood risk, visit the FEMA Map Service Center. 

FEMA Mapping and Insurance eXchange (FMIX) 

For questions on LOMA data, contact: 

Toll-Free: 1-877-FEMA-MAP 

(1-877-336-2627) 

FEMA-FMIX@fema.dhs.gov

Hours of Operation: Monday – Friday, 9:00am ET – 5:00pm ET

Try the FMIX’s Live Chat Service, available on the MSC Monday – Friday 9:00am ET – 5:00pm ET.

July 2021 1-877-FEMA MAP