§ 180-16K(4)

When base flood elevation data or floodway data have not been provided, the Zoning Administrator or County Floodplain Administrator shall obtain, review, and reasonably utilize any base flood elevation and floodway data available from a federal, state, or any other source.

Development activities in Zone A on the Warren County Flood Insurance Rate Map which increase the water surface elevation of the base flood by more than one foot may be allowed, provided that the developer or applicant first applies, with the Board of Supervisor's endorsement, for a conditional letter of map revision (CLOMR) and receives the approval of the Federal Emergency Management Agency.

An elevation certificate which states the elevation (in relation to the mean sea level) of the lowest floor (including the basement) of all new and substantially improved structures.

Documentation that the structure has been floodproofed in accordance with the requirements of § 180-16K(3).

Any new construction or substantial improvement of any residential structure (including manufactured homes) shall have the lowest floor, including basement, elevated no lower than 2 1/2 feet (30" above BFE) above the base flood elevation.

Any new construction or development must meet a linear setback of 50 feet from the edge of the regulatory floodway based on best available data or through a hydrologic and hydraulic analysis study submitted by a certified engineer or a topological field survey by a licensed surveyor.