Sec. 34-385

Floodplain

• Existing structure improvement threshold

  Any modification, alterations, repair, reconstruction, or improvement of any kind to a structure and/or use located in any floodplain district to an extent or amount of less than 50 percent of its market value, shall be elevated and/or floodproofed to the greatest extent possible.

• Floodway encroachment prohibition

  Within any floodway area, no encroachments, including fill, new construction, substantial improvements, and other development shall be permitted unless it has been demonstrated through hydrologic and hydraulic analyses ... that the proposed encroachment would not result in any increase in the 100-year flood elevation.

• Manufactured homeManufactured homeA dwelling built in a factory to a federal standard and transported to the site. foundation

  All manufactured homes to be placed or substantially improved within the floodplain district shall be placed on a permanent foundation and elevated and anchored in accordance with the Uniform Statewide Building Code.

• Maximum increase in 100-year flood elevation1 ft

  No new construction or development shall be permitted within the floodplain district unless it is demonstrated that the cumulative effect ... will not increase the elevation of the 100-year flood more than one foot at any point.

• Zoning permit required

  All uses, activities, and development occurring within the floodplain district shall be undertaken only upon issuance of a zoning permit.