18.170.070(1)

Other

• Lowest floor elevation

  New construction or substantial improvement of any commercial, industrial, or nonresidential building shall have the lowest floor, including basement, elevated above the base flood elevation.

• Existing structure modification50 pct

  Modifications less than 50% of market value must be elevated/floodproofed; 50% or more must fully comply.

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

  Manufactured homes shall be elevated on a permanent foundation such that the lowest floor is elevated to or above the base flood elevation and anchored.

• Zoning permit required

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

• Recreational vehicle placement180 days

  Recreational vehicles must be on site for fewer than 180 consecutive days and ready for highway use, or meet manufactured home requirements.

• Site plan information

  Site plans and permit applications must include lowest floor elevation, floodproofing elevation, 100-year flood elevation, and topographic info.

• Base flood elevation data for subdivisions

  Base flood elevation data shall be provided for subdivision proposals exceeding 50 lots or five acres.

• Subdivision flood damage minimization

  Subdivision proposals must be consistent with minimizing flood damage, have public utilities located to minimize damage, and adequate drainage.

• Utility design criteria

  Sanitary sewer, water, drainage, and utilities must be designed to minimize flood damage.

• VarianceVariancePermission to depart from a specific dimensional rule, granted on a showing of hardship. factors

  Variances considered based on factors including danger to life, property, etc.

• VarianceVariancePermission to depart from a specific dimensional rule, granted on a showing of hardship. lot size limit0.5 acresacre43,560 square feet — about the size of an American football field without the end zones.

  Variances generally limited to a lot size less than one-half acre.

• Watercourse alteration permit

  Prior to any proposed alteration or relocation of any channels or watercourse, a permit shall be obtained from the U.S. Corps of Engineers, the Virginia State Water Control Board, and the Virginia Marine Resources Commission.