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About Flood Map Service Center

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). Use the MSC to find your official flood map, access a range of other flood hazard products, and take advantage of tools for better understanding flood risk.

FEMA flood maps are continually updated through a variety of processes. Effective information that you download or print from this site may change or become superseded by new maps over time. For additional information, please see the Flood Hazard Mapping Updates Overview Fact Sheet


As of August 1, 2017 all FEMA systems will require the use of the "https" protocol, and "http" links will no longer function. This may impact NFHL web services. For more information on how NFHL GIS services will be impacted, please visit the NFHL GIS Services page at #/femaportal/wps/portal/NFHLWMS.

As part of this security protocol change, users that access the NFHL through Google Earth must install the Google Earth Version 7.3 or higher and download the new .kmz files which can be found on the Using the National Flood Hazard Layer Web Map Service (WMS) in Google Earth web page.

Preliminary & Pending National Flood Layers - FEMA has published new Preliminary & Pending National Flood Layers to provide the public an initial view of their home or community's projected flood hazard risk. Nationwide preliminary and pending data will be available in a centralized and easily accessible location, along with FEMA's other flood hazard mapping products. Users will be able to access these datasets via web services and on the FEMA GeoPlatform. For more information please see the GIS Web Services for National Flood Layers web page at #/femaportal/wps/portal/NFHLWMS.

Hazus 4.0 (Tsunami) Now Available: The Hazus Team has deployed Hazus 4.0 - Tsunami Module. The software can be downloaded for free on the FEMA Flood Map Service Center (MSC) Hazus Download page. Hazus 4.0 is supported on ArcGIS 10.4 and Windows 10 64-bit, with continued support for Windows 8.1 and 7 (64-bit only).

NOTE: You must uninstall any existing versions of Hazus and all Microsoft SQL components from your computer before downloading and ensure that you have ArcGIS 10.4 on your computer. When installing ArcGIS 10.4, a patch must be applied for Hazus 4.0 to properly display ArcGIS attribute tables from the ArcMap Table of Contents. Additional details are available in the User Release Notes as part of the Hazus Installation package. The patch is available at: http://support.esri.com/download/7427.

For questions or issues, feel free to contact the Hazus Help Desk.

Browser Configuration — To access all functionality of the MSC, Internet Explorer users should confirm Compatibility View is not enabled. In addition, users of Internet Explorer 9 and 10 should first take the following steps before using the MSC:

  1. Open Internet Options under the Tools Menu
  2. Click the Advanced tab
  3. Scroll down to Security and confirm the following items are checked: "Use TLS 1.1" and "Use TLS 1.2"
  4. Click OK to exit Internet Options