FEMA flood zone rules in Clarke County, GA β also called floodplain regulations or special flood hazard area (SFHA) rules β determine flood insurance requirements and elevation standards for new construction.
Athens-Clarke County participates in the National Flood Insurance Program (NFIP) and the Community Rating System, administering local floodplain rules under Chapter 8-2 (Flood Protection) of the Code of Ordinances. The unified government enforces FEMA Flood Insurance Rate Maps for the North Oconee River, Middle Oconee River, and tributary floodplains. Any development in a Special Flood Hazard Area requires a floodplain development permit, an elevation certificate at permit review and again at completion, and substantial improvements (work valued at 50% or more of the structure's market value) trigger full compliance with current floodplain standards.
Athens-Clarke County is a participating community in the National Flood Insurance Program and administers local floodplain management ordinances that meet or exceed FEMA minimum requirements. Chapter 8-2 (Flood Protection) of the Athens-Clarke County Code of Ordinances regulates development in Special Flood Hazard Areas, including the FEMA-mapped floodplains of the North Oconee River, Middle Oconee River, and their tributaries. Chapter 8-6 (Protected Environmental Areas) supplements the flood ordinance with stream-buffer and protected-environmental-area rules, and the Oconee Rivers Greenway Commission is authorized to recommend rules for the protection of the rivers and their floodplains within the borders of Athens-Clarke County. New construction, additions, substantial improvements, fill, and grading within a designated SFHA require a floodplain development permit issued by the Building Inspections Department; an elevation certificate is required at permit review and again at project completion for final inspection. The substantial improvement threshold is 50% of the market value of the structure (calculated before improvement work, or before the damage occurred for damaged structures) β a substantially improved structure must be brought into full compliance with current floodplain standards, including elevation of the lowest floor to or above the regulatory flood elevation. Property owners can verify flood zones by FEMA Map Service Center (msc.fema.gov) or by contacting Athens-Clarke County Building Inspections (706-613-3640) or Stormwater Management. The county's CRS membership provides flood-insurance premium discounts to NFIP policyholders within Athens-Clarke County.
Development in a Special Flood Hazard Area without a floodplain development permit is a violation of Chapter 8-2, enforceable through stop-work orders, code-enforcement fines, and required removal or elevation of non-compliant structures. Non-compliant construction may also disqualify the property from federally backed mortgages and standard NFIP coverage. Failure to submit elevation certificates at permit review and at completion can result in withholding of the Certificate of Occupancy. Repeated violations can affect the county's CRS rating and reduce premium discounts for all county policyholders.
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