What Is a Floodplain?
A floodplain is any area of land that is susceptible to being inundated by unusual and rapid accumulation of water from any source. The Floodplain Ordinance in Chapter 48 of the Arlington County Code regulates development in flood zones.
What Is a Flood Insurance Rate Map?
The Federal Emergency Management Agency (FEMA) publishes flood hazard maps, called Flood Insurance Rate Maps (FIRM), for all areas of the United States, including Arlington. The purpose of a FIRM is to show the areas in a community that are subject to flooding and the risk associated with these flood hazards.
Flooding can be a very costly disaster. The risk for flooding is affected by many variables, many of which can change over time, due to erosion, land use, weather events and other factors. The risk for flooding can vary within the same neighborhood and even property to property. As the flooding that occurred in Arlington in June 2006 illustrated, flooding occurs not only in identified high-risk areas, but may also occur in areas that may not have been identified as high risk. All properties have some level of vulnerability. Knowing your flood risk is the first step to flood protection.
How do I find the floodplain map for my property?
As a property owner, you should be aware of the flood risk for your property. All properties have some level of vulnerability. Knowing your flood risk is the first step to flood protection.
- Go to FEMA’s Map Service Center to view the floodplain map for your property. Click on the map to zoom to your address, or search by your address.
- Click on the blue View Map button to view a PDF map for your area, or click on Interactive Map to see a map with aerial imagery. You can also save a copy of the map.
- Zoom in to your property on the map.
- See what Flood Zone your property is listed in. Read the flood risk information associated with that zone.
- Learn more about flood insurance.
If you are having problems finding the flood zone information for your property, contact us, and we can help create a map for you. Contact Elizabeth Thurber at 703-228-3363.
Letters of Map Revision
The County-wide flood maps for Arlington are only updated periodically. Arlington’s maps were last updated in 2013.
FEMA issues interim revisions to the maps for specific properties based on submittals from private property owners, developers, and from the County. These revisions are addendums to the County-wide maps. The approved map revisions and map changes (Letters of Map Revision (LOMR) and Letters of Map Amendment (LOMA)) can be found online at: https://msc.fema.gov/portal/advanceSearch .
Lower Long Branch Flood Letter of Map Revision
Donaldson Run Conditional Letter of Map Revision