Name: FEMA Flood Zones

Display Field: DFIRM_ID

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Description: The Federal Emergency Management Agency (FEMA) creates and provides authoritative data related to flood insurance. Using that data, the Los Angeles County Department of Public Works has developed a public-facing web viewer for accessing flood zone information in the County of Los Angeles (Flood Zone Determination Website). Flood zones are represented by letters for special flood hazard areas by FEMA. For example, Zone A areas have a 1 percent annual chance of flooding. This flood is also called the 100-year flood. Property owners with structures in Flood Zone A, which have a federally backed mortgage are required to obtain flood insurance.Supplemental Information:Data from Flood Insurance Rate Maps (FIRMs), where available digitally, can be found on the official FEMA’s National Flood Hazard Layer.The DFIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper Flood Insurance Rate Maps (FIRMs)FEMA Flood Maps can be obtained from the the FEMA Flood Map Service Center (MSC)The National Flood Hazard Layer (NFHL) is a digital database that contains flood hazard mapping data from FEMA’s National Flood Insurance Program (NFIP). This map data is derived from Flood Insurance Rate Map (FIRM) databases and Letters of Map Revision (LOMRs).The NFHL is for community officials and members looking to view effective regulatory flood hazard information in a Geographic Information Systems (GIS) application.FEMA has additional information on the National Flood Insurance Program and Flood Hazard Mapping.

Copyright Text: Eduardo Escobar Civil Engineer Los Angeles County Department of Public Works 900 S Fremont Ave Watershed Management Division Alhambra, CA 91803 edescoba@dpw.lacounty.gov 626-458-4355

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