Letters of Map Change
If a property owner thinks their property has been inadvertently mapped in a Special Flood Hazard Area (SFHA), they may submit a request to FEMA for a Letter of Map Change (LOMC). A LOMC reflects an official revision/amendment to an effective Flood Insurance Rate Map. Below are the currently effective LOMCs for Portsmouth.
Letters of Map Change may also be searched on FEMA's Map Service Center website.