On Tuesday November 14th 2017, the City of Hanahan City Council passed ordinance 04-2017 in regards to a revised Flooding Ordinance for the City of Hanahan which can be found here.  The last Flood Ordinance was passed in 2003 and can be found here.  

Floodplain Management

Floodplain Management assists customers in meeting the requirements of the City of Hanahan’s Flood Damage Prevention Ordinance and the National Flood Insurance Program (NFIP). The Building and Codes Department is the contact for all the flood information for the City, including Flood Insurance Rate Maps (FIRMs), Elevation Certificates (ECs) and Flood Insurance Studies. This office is also responsible for the Community Rating System (CRS) information. CRS is a voluntary program, which, based on activities performed by the community determines a discount from 5 percent to 40 percent on flood insurance rates. The following information can be obtained from the Building & Codes Department

  • Flood Map Determinations and an explanation of your risk to flooding
  • Copies of Elevation Certificates (ECs)
  • Copies of Flood Insurance Rate Maps (FIRMs)
  • Requirements for Construction in a Special Flood Hazard Area (SFHA)
  • Substantial Damage Determinations

Please contact the Building & Codes Department at (843) 576-5259 for more information.

Flooding Hazard

There are three water bodies in the City of Hanahan, SC  that are sources of many of the flood losses in the City, namely:  Turkey Creek, the Goose Creek, and the Cooper River.   Several properties that directly border Turkey Creek or are within close proximity to this waterbody have flooded on one or more occasion.  Several properties in relatively close proximity to the Cooper River have also flooded over time.  Flooding of the Goose Creek and/or Turkey Creek also partially contributed to flooding of properties located near the Cooper River.   Tidal influences on these waterways have also contributed to flooding in the City. The City of Hanahan has experienced multiple severe flood loss events since 1978.  Several of these have been hurricanes (Hugo, Floyd, Matthew) and others have been severe rain storms with significant volumes of rainfall over relatively short time periods, some at the time of astronomical high tides compounding the flood problem.   Specifically, Hurricane Matthew (2016), the major storm of October 1-4, 2015, and the significant high tides of October 24-25, 2008 were severe flood events in the City.  Flood losses in the City of Hanahan have been on the increase over time as a result of more severe and frequent storm events. The City of Hanahan is working with owners of flooded properties and with other government entities to address the flooding issues within its limits and assist property owners in reducing future flood losses.  Contact the City for more information.

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