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A design prototype by Datopian, not an official website

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Dam Break Inundation

Prince William County

Updated Oct 11, 2026

About this dataset

This data layer contains polygon features representing the approximate locations of dam break inundation zones and special flood hazard areas (Floodplains and Floodways). It was created to provide users the ability to overlay these features onto the parcel boundary layer.The dam break inundation zone layer provided by the Virginia Department of Conservation. The special flood hazard area layer was provided by Federal Emergency Management Agency (FEMA). Users should consult these agencies for legal inundation zone and special flood hazard area boundaries.

Data and resources (6)

Prototype by Datopian · not an official government website · data from data.virginia.gov