Floodplain management is the operation of a community program of preventive and corrective measures to reduce the risk of current and future flooding, resulting in a more resilient community.
FEMA 2019 Elevation Certificate is now available. All Elevation Certificates signed and sealed on or after Feb. 21th, 2020 must be completed using the 2019 version.
Flood design elevation increase: Effective July 1st, 2020, all residential & non-residential new construction, and non-residential substantial improvements, in the Special Flood Hazard Area (SFHA) must be designed 2 ft. above Base Flood Elevation (BFE).Residential substantial improvement will remain at 1 ft. above BFE.
(Image credit: Lincoln Co. WI, Land Services)
To promote, where practical, the natural functions of the floodplain
To reduce losses to lives and property from flooding
To mitigate damage to structures in the Special Flood Hazard Area (SFHA) from flooding events
Promote, manage, and enforce Federal Emergency Management Agency (FEMA) requirements and recommendations
Promote, manage, and enforce National Flood Insurance Program (NFIP) requirements and recommendations
Promote, manage, and expand participation in the NFIP’s Community Rating System (CRS)
Manage and make available Flood Insurance Rate Map (FIRM) information
Manage development within the Special Flood Hazard Area (SFHA)
Natural and Beneficial Floodplain Functions:
The natural functions of floodplains, when preserved or restored to their undeveloped state, provide a range of benefits to both natural and human systems. These benefits fall into the following categories:
Provides floodwater storage and conveyance which reduces the severity of floods or storm surge
Allows sediment to settle out of stormwater, attenuates excess nutrients, and supports other qualities managed under the community’s National Pollutant Discharge Elimination System (NPDES) permit
Allows groundwater recharge
Provides habitat for feeding and reproduction for fish and wildlife species
Support high rates of biologic production and diversity
Riparian and coastal vegetation helps stabilize river bank and beaches against erosion
Agricultural and wildlife harvesting, including shell-fish harvesting
Recreational and aesthetic enjoyment
Spaces which provide natural and beneficial floodplain functions in the Charleston area include salt marsh, intertidal wetlands, coastal barriers (such as dunes and maritime forest), and forested wetlands. Regulating development in these sensitive area helps to preserve their community benefit.