![]() ![]() ![]() However, flooding could occur under the right circumstances. ![]() Area of Minimal Flood Hazard, Zone X = You are in an area that typically does not flood.Lower risk flood areas - Over 30% of flood insurance claims come from these areas. Future Conditions 1% Annual Chance Flood Hazard = Future construction or infrastructure or changes to a city's or jurisdiction's planning and zoning ordinance could cause flooding in this area.This means in any given year, there is a. 0.2% Annual Chance Flood Hazard = You are in the 500-year floodplain.This means in any given year, there is a 1% chance of flooding in this area. 1% Annual Chance Flood Hazard = You are in the 100-year floodplain.These are called Special Flood Hazard Areas (SFHA). The areas of minimal flood hazard, which are the areas outside the SFHA and higher than the elevation of the 0.2-percent-annual-chance flood, are labeled Zone C or Zone X (unshaded).Īn area of moderate flood hazard that is determined to be outside the Special Flood Hazard Area between the limits of the base flood and the 0.2-percent-annual-chance (or 500-year) flood.Īn area of minimal flood hazard that is determined to be outside the Special Flood Hazard Area and higher than the elevation of the 0.2-percent-annual-chance (or 500-year) flood.High-risk flood areas - You need flood insurance, and mortgage companies will require flood insurance. Moderate flood hazard areas, labeled Zone B or Zone X (shaded) are also shown on the FIRM but are not considered part of the Special Flood Hazard Area. Mandatory flood insurance purchase requirements and floodplain management standards apply. Base Flood Elevations derived from detailed hydraulic analyses are shown. Mandatory flood insurance purchase requirements and floodplain management standards apply.Īreas subject to inundation by the 1-percent-annual-chance flood event with additional hazards due to storm-induced velocity wave action. Because detailed hydraulic analyses have not been performed, no Base Flood Elevations or flood depths are shown. Mandatory flood insurance purchase requirements and floodplain management standards apply.Īreas along coasts subject to inundation by the 1-percent-annual-chance flood event with additional hazards associated with storm-induced waves. No Base Flood Elevations or depths are shown. Zone A99 may only be used 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. Mandatory flood insurance purchase requirements and floodplain management standards apply.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. Mandatory flood insurance purchase requirements and floodplain management standards apply.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. Average flood depths derived from detailed hydraulic analyses are shown in this zone. Mandatory flood insurance purchase requirements and floodplain management standards apply.Īreas subject to inundation by 1-percent-annual-chance shallow flooding (usually sheet flow on sloping terrain) where average depths are between one and three feet. Base Flood Elevations derived from detailed hydraulic analyses are shown in this zone. Mandatory flood insurance purchase requirements and floodplain management standards apply.Īreas subject to inundation by 1-percent-annual-chance shallow flooding (usually areas of ponding) where average depths are between one and three feet. Mandatory flood insurance purchase requirements and floodplain management standards apply.Īreas subject to inundation by the 1-percent-annual chance-flood event determined by detailed methods. To indicate the risks in different parts of the country, FEMA has assigned a character from the alphabet to each zone.Īreas subject to inundation by the 1-percent-annual-chance flood event generally determined using approximate methodologies. ![]()
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