Flood Hazard Zone Lines: City of Philadelphia, Pennsylvania
Federal Insurance and Mitigation Administration (FEMA)
Data developed by the Federal Emergency Management Agency (FEMA) with information from its Digital Flood Insurance Rate Map (DFIRM) Database, capturing flood risk information and supporting data for Philadelphia County. Data consists of geo-referenced digital maps and attribute data. Risk classifications used in the data are: 1% annual-chance flood event; 0.2% annual-chance flood event; and areas of minimal flood risk.