Article 3, Section C.1

Other

• Drainage paths

  Adequate drainage paths around structures on slopes shall be provided to guide floodwaters around and away from proposed structures.

• Enclosed area use

  Fully enclosed areas, of new construction or substantially improved structures, which are below the regulatory flood protection elevation shall not be designed or used for human habitation, but shall only be used for parking of vehicles, building access, or limited storage of maintenance equipment...

• Flood vent bottom heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first.1 ft

  The bottom of all required openings shall be no higher than one (1) foot above the adjacent grade.

• Flood vent openings1 sqin/sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  The total net area of all openings must be at least one (1) square inch for each square foot of enclosed area subject to flooding.

• Floodproofing elevation1 ft

  Buildings located in all A1-30, AE, and AH zones may be floodproofed in lieu of being elevated provided that all areas of the building components below the elevation corresponding to the BFE plus one (1) foot are water tight...

• Floodway encroachment

  Encroachments, including fill, new construction, substantial improvements and other developments are prohibited unless certification such as hydrologic and hydraulic analyses... demonstrating that encroachments shall not result in any increase in flood levels during occurrence of the base flood.

• Lowest floor elevation1 ft

  New construction or substantial improvement of any residential structure (including manufactured homes) shall have the lowest floor, including basement, elevated to or above the base flood elevation to a minimum of one foot freeboard.

• Lowest floor elevation1 ft

  New construction or substantial improvement of any commercial, industrial, or non-residential building (or manufactured home) shall have the lowest floor, including basement, elevated to or above the base flood elevation to a minimum of one foot freeboard.

• Lowest floor elevation1 ft

  When such base flood elevation data is utilized, the lowest floor shall be elevated to or at least one (1) foot above the base flood elevation.

• Lowest floor elevation1 ft

  If no flood depth number is specified, the lowest floor, including basement, shall be elevated no less than one foot above the highest adjacent grade.

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

  The placement of manufactured homes (mobile homes) is prohibited, except in an existing manufactured homes (mobile homes) park or subdivision.

• Base flood elevation data for subdivisions

  Base flood elevation data shall be provided for subdivision proposals and other proposed development proposals (including manufactured home parks and subdivisions) that exceed fifty lots or five acres, whichever is the lesser.

• Substantial improvement threshold50 pct

  The modification, alteration, repair, reconstruction, or improvement of any kind to a structure and/or use, regardless of its location in a floodplain area to an extent or amount of fifty (50%) percent or more of its market value shall be undertaken only in full compliance with this ordinance...