![]() ![]() High risk areas, referred to as Special Flood Hazard Area (SFHA) are shown on the map as zones labeled with the letters A or V. High risk areas are defined as having a 1% chance of being flooded in any given year, which is also referred to as the 100-year flood or base flood.Each flood zone designation, represented by a letter or letters, tells homeowners what the risk is for flooding at their property over a period of years, regardless of the cause. Flood zones are areas mapped by the Federal Emergency Management Agency (FEMA) for use in the National Flood Insurance Program.Use our interactive maps to see the difference. You may be in a flood zone, a storm surge area, or an evacuation zone. Base flood elevation (BFE) means the elevation of a flood having a one percent chance of being equaled or exceeded in any given year, which is commonly referred to as the "100-year flood" or the "one-percent-annual chance flood."Įveryone is at risk for flooding.Flood hazard means base flood elevation, design flood elevation, flood hazard area, or flood zone.More information.įederal requirements for flood insurance are only based on the FEMA FIRM, not the Pinellas County flood maps. Know your zone and follow evacuation orders. Evacuation zone maps are based on ground elevation and the area’s vulnerability to storm surge. More information.Įvacuation may be necessary due to the risk of storm surge from tropical storms or hurricanes. These maps are used for hurricane preparedness and planning. Storm surge maps display where flooding will occur when an abnormal rise of water generated by a storm is pushed toward the shore by strong winds. Like with the FEMA FIRM high risk flood zones, these floodplain areas are also considered high risk areas and subject to specific development regulation. More information.Ĭounty floodplain maps developed from detailed watershed and coastal studies also show areas that have a 1% or greater chance of flooding in any given year. ![]() The FIRM is used to determine building and flood insurance requirements. High risk areas have a 1% or greater chance of flooding in any given year. Residents are advised to check all of them to learn what your flood risk is.įEMA flood zone maps, known as Flood Insurance Rate Maps (FIRMs), show areas of high and moderate to low flood risk. ![]() A home may be located in a non-evacuation zone, yet still be located in a high-risk flood zone because of a nearby stream or pond. They measure different conditions that may not occur at the same time, are determined by different methods, and have different purposes. Find out what the flood hazard and required development standards are BEFORE you develop your plans.įlood zones, evacuation zones, and storm surge are different. ![]()
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