FEMA Flood Map Service Center (MSC)

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What is the FEMA Flood Map Service Center (MSC)?

Flooding is the number one natural disaster in the United States. Supporting community awareness and effective management of flood risk, the FEMA Flood Map Service Center (MSC) serves as the official online location for accessing flood hazard mapping products created under the National Flood Insurance Program (NFIP). This includes your community’s regulatory flood map, called a Flood Insurance Rate Map (FIRM)

Features found on the MSC include:

  • A geographic Address Search that allows you to find and download your community’s FIRM, including any associated Letters of Map Change (LOMC)
  • Search All Products to locate every flood hazard product available for an area of interest in just a few clicks
  • Customized free email subscriptions for floodplain managers, local officials, and other interested parties to receive notifications when new flood hazard data and information is published for a location of interest
  • Tailored How-To guidance, help text, and responses to Frequently Asked Questions that assist first-time users through the site and to information they need

Who uses MSC Flood Hazard Products and Maps?

Anyone can benefit from and use these products and maps for a range of purposes, including purchasing a home or insurance, mitigation planning, safer construction, and community/urban planning:

  • Property Owners/ Renters
  • Flood Determination Companies
  • Engineers and Surveyors
  • Urban/ Construction Planners
  • Realtors
  • Insurance Professionals
  • Financial Lenders
  • Emergency Management Professionals

Products and Tools Available on the MSC

The MSC is the authoritative source for a variety of products detailing communities’ flood risk. Effective FIRMs and their associated LOMCs may be accessed through the Address Search, and all MSC products are accessible through the Search All Products function.  

MSC products include effective regulatory maps, studies, and geodatabases that are used for official legal determinations under the NFIP, as well as regulatory products with different statuses, such as preliminary, pending, or historic.  The MSC also hosts non-regulatory products geared toward understanding and communicating local flood hazard risk, plus a set of tools for accessing data and analyzing risk.

To learn more about products and tools available on the MSC, visit the site’s Products and Tools page.

How Do I Stay Informed About Changes in My Community

To learn when new mapping products are published to the MSC website for your community of interest, you may sign up for an email subscription service.

Visit the MSC Email Subscriptions Product Subscriptions Page to set up a subscription to any Product available on the MSC.

I'm in a Flood Zone, What's Next?

Flood zones are geographic areas that FEMA has defined according to varying levels of flood risk and type of flooding. These zones are depicted on the effective FIRM or an older Flood Hazard Boundary Map (FHBM).  

If you are in an area that mandates the purchase of flood insurance, visit FEMA’s FloodSmart website to learn more about flood insurance coverage and the NFIP.

How Do I Change My Flood Zone Designation

If you believe your property was incorrectly included into a SFHA, you may submit a Letter of Map Change (LOMC) application to FEMA for a formal determination of the property's location and/or elevation relative to the SFHA. 

For more information regarding the different types of Letter of Map Changes (LOMCs) you may submit to FEMA, visit the Letter of Map Change definitions page.  If you know you would like to submit a LOMC application online, start your Online LOMC application through the Online Letter of Map Change site.

Contact Us

For more information or additional assistance, contact a Map Specialist at the FEMA Map Information eXchange through the following methods:

Last Updated: 
07/25/2014 - 18:37
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