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Interactive Floodplain Mapping Tool
Image of flood plain mapping tool
Loudoun County staff developed an interactive mapping program that allowed users to access information online about the Preliminary Flood Insurance Rate Map (FIRM) and locate their property to see if there was floodplain on the property and if there was a change to FEMA’s Special Flood Hazard Area since it was last mapped. The image above provides an example view from the Preliminary Flood Insurance Rate Map (FIRM) Interactive Mapping Program.  

Link to proposed floodplain overlay district informationBecause the preliminary data have been superceded, that mapping tool has been replaced by another mapping program that shows the Proposed Loudoun County Floodplain Overlay District (FOD) Major and Minor Floodplains compared to the existing County FOD Major and Minor Floodplains.  The proposed FOD is based on FEMA’s finalized Flood Insurance Rate Map and Flood Insurance Study.  More information about the proposed amendments to the county's Flood Overlay District is online here.

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