Engineers, Surveyors & Architects

Main Content

Engineers, surveyors and architects (those employed by private firms and those employed by federal, state and local agencies) are actively involved in the development of the new and updated flood hazard information presented on National Flood Insurance Program (NFIP) flood hazard maps and related products. This page outlines products, services and publications available to engineers, surveyors and architects.

To keep up with the latest developments in Flood Hazard Mapping, please visit What's New in Flood Hazard Mapping.

For more information you may e-mail or call a Map Specialist in the FEMA Map Information eXchange; toll free, at 1-877-FEMA MAP (1-877-336-2627)

Online LOMC

Online Letters of Map Change (LOMC) is an internet-based tool that allows applicants to easily request any type of LOMC. It is a convenient way for applicants to upload all information and supporting documentation and check the status of their application online. Users can submit flood map Amendment or Revision requests and pay any associated fees, through this tool instead of filing the MT-EZ, MT-1 , or MT-2 paper forms submitted through the mail.  

View your Community’s Preliminary Flood Hazard Data

Now Available! FEMA has launched a new way to view your community’s preliminary flood hazard data: over the web and in one convenient location! Preliminary flood hazard data provide an early look at your home or community’s risk to flood hazards. There are many benefits to viewing your community’s data before it becomes effective. For more information, visit the Preliminary Flood Hazard Data page.

FEMA Engineering Library

To obtain archival, technical and administrative support data, please visit the Engineering Library.

LOMC Clearinghouse

FEMA‘s Customer and Data Services (CDS) has launched the LOMC Clearinghouse has centralized the administrative functions associated with processing MT-EZ, MT-1 and MT-2 requests. Specific activities include creation of LOMC case files, upload and scanning of data, processing of associated fees and distribution to the appropriate Production and Technical Services (PTS) firm for processing.

When submitting paper applications, Requestors should mail their applications and supporting data to:

LOMC Clearinghouse

847 South Pickett Street,

Alexandria, VA 22304-4605

Attn: LOMC Manager


For more information about the LOMC Clearinghouse, please contact FEMA Map Information eXchange at 1-877-FEMA MAP (1-877-336-2627) or follow this link to e-mail a Map Specialist.

How to View and Obtain Flood Maps

You may view and order copies of the effective maps and other NFIP products through the Map Service Center. Your local Community Map Repository, usually located in the planning and zoning office, also has copies of flood maps. Please call the FEMA Map Information eXchange, toll free at 1-877-FEMA MAP (1-877-336-2627), or follow this link to e-mail a Map Specialist to determine the location of your Community Map Repository.

Products, Services and Publications

  • Need to Produce a New Map?
  • A suite of engineering and mapping tools including forms for producing flood maps is available when you register to use the FEMA Mapping Information Platform under the Tools & Links page. These tools will assist in meeting the current FEMA guidelines and specifications for flood maps.
  • Changing a Map?
  • Submit a request through Online LOMC. View and download the required FEMA FEMA forms including application form packages for conditional and final Letters of Map Amendment, Letters of Map Revision Based on Fill and Letters of Map Revision.
  • Checking Status?
  • If you have submitted a request through Online LOMC, you can check status at any time by logging in and viewing your account. You can also view recent priority map changes and check the Status of Map Change Requests.
  • Looking for a Letter of Map Amendment (eLOMA)?
  • Register for the new interactive online determination tool for MT-1 requests.
  • Elevation Certificate Questions?
  • You can view and download the Elevation Certificate.
  • Ordering Technical and Administrative Support Data?
  • You can order support data by mail or facsimile.
  • Need Software?
  • Locate and download software approved for use by FEMA to support the NFIP, including associated documentation and guidance.
  • What's New in Flood Hazard Mapping?
  • Keep up with the latest developments and find out What's New in Flood Hazard Mapping.

Frequently Asked Questions

Go to Frequently Asked Questions for Engineers, Surveyors and Architects.

For More Information

For more information or additional assistance:

Last Updated: 
08/27/2014 - 17:19
Back to Top