Zone AH: Areas subject to inundation by 1-percent-annual-chance shallow flooding (usually areas of ponding) where average depths are between 1 and 3 feet. Mandatory flood insurance requirement and floodplain management standard and regulations apply. Zone AE: Areas subject to inundation by the 1-percent-annual-chance (100-year) flood event determined by detailed methods and Base Flood Elevations (BFEs) are shown. Zone A: Areas of special flood hazard subject to inundation by the 1-percent-annual-chance (100-year) flood event where no detailed hydraulic analyses were performed, and no Base Flood Elevation (BFE) water surface elevation determined. The SFHA includes many Zones but only A, AH, AO, AE, A99, VE, and V apply to the City of Oceanside.įor more information please check FEMA website.Īdditional information concerning specific flood zone requirements can be found in the NFIP Regulations. The SFHA is shown on NFIP, Flood Insurance Rate Maps (FIRMs). SFHA is the area where the NFIP's floodplain management regulations must be enforced and the area where the mandatory purchase of flood insurance applies.
The 1% annual-chance of flooding is also referred to as the (100 year or base) flood. The SFHAs are defined as areas that will be inundated by the flood event having a 1% chance of being equal or exceeded in any given year. The land area covered by the floodwaters of the base flood is the Special Flood Hazard Area (SFHA) on National Flood Insurance Program (NFIP) maps.
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