Flood hazard soils are subject to flooding and therein provide severe limitations to building and structure location because of flooding and have been recommended for inclusion among flood hazard areas by the US Department of Agriculture, Soil Conservation Service. The following are classified as flood hazard soils in Wake County.
Table – List of Flood Hazard Soils Soil Map Symbol Name AfA
Altavista fine sandy loam 0 to 4% slopes
Au
Augusta fine sandy loam 0 to 4% slopes
Bu
Buncombe 0 to 2% slopes
Cm
Chewacla 0 to 2% slopes
Cn Co Cp
Colfax sandy loam 0 to 6% slopes
Congaree fine sandy loam 0 to 2% slopes
Congaree silt loam 0 to 2% slopes
Ly
Lynchburg sandy loam 0 to 2% slopes
Me
Mantachie soils 0 to 4% slopes
Ps
Plummer sand 0 to 4% slopes
Ra
Rains fine sandy loam 0 to 2% slopes
Ro
Roanoke fine sandy loam 0 to 2% slopes
Sw
Swamp Wh Wahee fine sandy loam 0 to 2% slopes
Wn Wo
Wehadkee silt loam 0 to 2% slopes
Wehadkee and Bibb soils 0 to 2% slopes
Wy
Worsham sandy loam 0 to 4% slopes
b. Applicability & Exemption
(1) Applicability. The requirements of this Section shall apply to all residential and nonresidential development, except as provided in this Section, as determined by a qualified professional.
A. Planned Unit Developments (PUD). Planned Unit Development standards require that the boundaries of all lots within the development shall not include any portion of flood hazard soils or, where a flood study has been approved, shall not contain any portion identified as a result of such study, as provided by the Land Development Ordinance, in addition to the requirements for Planned Unit Developments in Appendix D Planning Unit Development District.
B. Conventional Subdivisions. A conventional subdivision shall comply with the requirements of Article J Subdivision Regulations in regard to environmentally sensitive areas, including flood hazard soils.
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