9/15/2023 0 Comments Fema flood zone x![]() Structures located within the CHHA have a 26-percent chance of flooding during the life of a standard 30-year mortgage. No BFEs or flood depths are shown.Ĭoastal High Hazard Areas (CHHA) represent the area subject to inundation by 1-percent-annual chance flood, extending from offshore to the inland limit of a primary front al dune along an open coast and any other area subject to high velocity wave action from storms or seismic sources. ![]() Zone A99 may be used only when the flood protection system has reached specified statutory progress toward completion. These are areas of special flood hazard where enough progress has been made on the construction of a protection system, such as dikes, dams, and levees, to consider it complete for insurance rating purposes. Average flood depths derived from detailed hydraulic analyses are shown within this zone.Īreas that result from the decertification of a previously accredited flood protection system that is determined to be in the process of being restored to provide base flood protection.Īreas subject to inundation by the 1-percent-annual-chance flood event, but which will ultimately be protected upon completion of an under-construction Federal flood protection system. BFEs derived from detailed hydraulic analyses are shown in this zone.Īreas subject to inundation by 1-percent-annual-chance shallow flooding (usually sheet flow on sloping terrain) where average depths are 1–3 feet. (Zone AE is used on new and revised maps in place of Zones A1–A30.)Īreas subject to inundation by 1-percent-annual-chance shallow flooding (usually areas of ponding) where average depths are 1–3 feet. Because detailed hydraulic analyses have not been performed, no Base Flood Elevations (BFEs) or flood depths are shown.Īreas subject to inundation by the 1-percent-annual-chance flood event determined by detailed methods. Federal floodplain management regulations and mandatory flood insurance purchase requirements apply in these zones.Īreas subject to inundation by the 1-percent-annual-chance flood event. Structures located within the SFHA have a 26-percent chance of flooding during the life of a standard 30-year mortgage. Special Flood Hazard Areas represent the area subject to inundation by 1-percent-annual chance flood. If FEMA grants the map amendment or revision request, the property owner may no longer be required to pay flood insurance.FEMA Zone Definitions Special Flood Hazard Areas – High Risk This is a formal determination by FEMA of a property's location and/or elevation relative to the Special Flood Hazard Area. If you think the flood map boundaries are incorrect, you can apply for a Letter of Map Change. Base flood elevations derived from detailed analyses are shown at selected intervals within these zones These areas have a 26% chance of flooding over the life of a 30‐year mortgage. Zone VE - coastal areas with a 1% or greater chance of flooding and an additional hazard associated with storm waves.No base flood elevations are shown within these zones. Zone V - coastal areas with a 1% or greater chance of flooding and an additional hazard associated with storm waves.Zone AE - 100-year floodplain, the base floodplain where base flood elevations are provided.Because detailed analyses are not performed for such areas, no base flood elevations are shown. Zone A - 100-year floodplain, areas with a 1% annual chance of flooding and a 26% chance of flooding over the life of a 30‐year mortgage.High Risk Areas (Special Flood Hazard Area) Includes areas of moderate flood hazard, such as base floodplains and shallow flooding areas, and minimal flood hazard, which may still have ponding and local drainage problems. Zone X - Floodplain area with a 0.2% (or 1 in 500 chance) or less annual chance of flooding.To view the effective flood zone for a property or area, visit Hillsborough County’s Effective Flood Zone Viewer. Talk to your insurance provider about your policy and consider if you need additional coverage. ![]() Most homeowners insurances do not cover flood damage. Evacuation zones are based on hurricane storm surge zones determined by the National Hurricane Center using ground elevation and the area's vulnerability to storm surge from a hurricane.įlood maps, also known as Flood Insurance Rate Maps, provided by the Federal Emergency Management Agency (FEMA) are a useful tool for assessing a property’s flood risk, and also are a factor in flood insurance and building requirements. During a storm, you need to know your Evacuation Zoneįlood zones are areas mapped by FEMA for use in the National Flood Insurance Program.
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