Zone C may have ponding and local drainage problems that don't warrant a detailed study or designation as base floodplain. B Zones are also used to designate base floodplains of lesser hazards, such as areas protected by levees from the 100-year flood, or shallow-flooding areas with average depths of less than one foot or drainage areas less than 1 square mile.Īrea of minimal flood hazard, usually depicted on FIRMs as above the 500-year flood level. The coastal area subject to a velocity hazard (wave action) where BFEs are provided on the FIRM map.Īrea of moderate flood hazard, usually the area between the limits of the 100-year and 500-year floods. Flood Hazard Zones: Federal Emergency Management Agency (FEMA) Flood. The coastal area subject to a velocity hazard (wave action) where BFEs are not determined on the FIRM map. Developed Areas: Miami-Dade County, 1998 Parcel Based Land Use. The base floodplain that results from the decertification of a previously accredited flood protection system that is in the process of being restored to provide a 100-year or greater level of flood protection. For more information about flood maps, please see the following page: Flood Insurance Rate Map (FIRM). Both the spatial and modeling information may be downloaded through the estBFE Viewer. The modeling and mapping available through this site meets FEMA's standards for flood risk studies. The Address Search allows you to search by specific address or location. This flood data may be used in coordination with regulatory Flood Insurance Rate Maps (FIRMs) as best available flood hazard information. BFEs are provided.Īrea to be protected from base flood by levees or Federal Flood Protection Systems under construction. To find the effective Flood Insurance Rate Map (FIRM) or Flood Hazard Boundary Map (FHBM) for your area of interest, you may use the Address Search feature. Base flood depths (feet above ground) are provided. The base floodplain with sheet flow, ponding or shallow flooding. On newer FIRMs, AE Zones are the same as A1-A30 Zones (i.e., BFEs are shown). BFEs are shown on a FEMA map that includes any of these zones. The first step to understanding the risks in your area begins with reviewing flood maps. Known as numbered A Zones (e.g., A7 or A14). This is often called an unnumbered A Zone or an approximate A zone. Six types of 'A' zones are described below.īase flood elevations (BFE) are not determined. Please see the table below for explanations of these zones. Whatever the area shown on a FEMA FIRM map, it may include several types of floodplain zones, each designated by a letter or a combination of a letter and number(s).

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