Section 8

Other

• Anchoring to prevent flotation

  New construction and substantial improvements shall be ... anchored to prevent flotation, collapse or lateral movement of the structure.

• Base flood elevation data for large subdivisions50 lots

  Base flood elevation data shall be obtained ... for subdivision proposals ... that exceed fifty lots or five acres, whichever is the lesser.

• Drainage facilities design

  All storm drainage facilities shall be designed to convey the flow of surface waters without damage to persons or property.

• Flood-resistant materials

  New construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage.

• 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 home (mobile home) park or subdivision.

• Maximum increase in base 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 base flood more than one foot at any point.

• Minimum flood opening area ratio1 sq_in_per_sq_ft

  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.

• Minimum lowest floor elevation above base flood elevation1 ft

  New construction or substantial improvement of any residential structure ... shall have the lowest floor, including basement, elevated at least one foot above the base flood level.

• Recreational vehicle placement180 days

  All recreational vehicles placed on sites must either: be on the site for fewer than 180 consecutive days ... or meet all the requirements for manufactured homes.

• Sanitary sewer design to minimize flood damage

  All new or replacement sanitary sewer facilities shall be designed to minimize or eliminate infiltration of floodwaters into the systems and discharges from the systems into the floodwaters.

• Space below lowest floor use restriction

  In zones A, AE, and AH zones, 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.

• Streets and sidewalks design to minimize flood flow

  Streets and sidewalks should be designed to minimize their potential for increasing and aggravating the levels of flood flow.

• 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 district, to an extent or amount of fifty (50) percent or more of its market value shall be undertaken only in full compliance with the provisions of this ordinance.

• Utilities elevation in flood-prone areas

  All utilities, such as gas lines, electrical and telephone systems being placed in flood-prone areas should be located, elevated (where possible), and constructed to minimize the change of impairment during a flooding occurrence.

• VarianceVariancePermission to depart from a specific dimensional rule, granted on a showing of hardship. lot size limit0.5 acreacre43,560 square feet — about the size of an American football field without the end zones.

  While the granting of variances generally is limited to a lot size less than one-half acre, deviations from that limitation may occur.

• Water facilities design to minimize flood damage

  All new or replacement water facilities shall be designed to minimize or eliminate infiltration of flood waters into the system and be located and constructed to minimize or eliminate flood damages.

• Zoning permit required for all development

  All uses, activities, and development, including placement of manufactured homes, occurring within the Floodplain District shall be undertaken only upon the issuance of a zoning permit.