![]() ![]() Zone AE - Areas subject to inundation by the 1-percent-annual-chance flood event determined by detailed methods. Mandatory flood insurance purchase requirements and floodplain management standards apply Because detailed hydraulic analyses have not been performed, no Base Flood Elevations (BFEs) or flood depths are shown. Zone A - Areas subject to inundation by the 1-percent-annual chance flood event generally determined using approximate methodologies. All development in a Special Flood Hazard Area requires a permit from the Land Use Planning office. The SFHA is the area where the NFIP's floodplain management regulations must be enforced and the area where the mandatory purchase of flood insurance may apply. The land area covered by the floodwaters of the base flood is the Special Flood Hazard Area (SFHA) in NFIP maps. All developments in a Special Flood Hazard Area requires a permit from the Land Use Planning office. The 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. It typically takes 30 days for a new flood insurance policy to take effect. It is important to purchase flood insurance prior to a flooding event. If you feel the FEMA flood maps do not accurately reflect the flood risk to your property, you may pursue a Letter of Map Amendment from FEMA. Links to both studies are provided below. The Flood Insurance Study (FIS) #41007CV001A and #41007CV002A, dated September 17, 2010, for unincorporated areas of Clatsop County. ![]() The Flood Insurance Study (FIS) #41007CV001B and #41007CV002B, dated June 20, 2018, Version Number 2.3.2.0, for unincorporated areas of Clatsop County.The areas of special flood hazard are identified in the following FEMA documents: ![]() Clatsop County began participating in the NFIP in 1978. In order for Clatsop County residents to be eligible for the National Flood Insurance Program (NFIP) the County has agreed to adopt and enforce a floodplain management ordinance (Section 5.1000, LAWDUC) that meets or exceeds the NFIP requirements set by the Federal Emergency Management Agency (FEMA).
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