Loading...
§ 153.49  STANDARDS FOR FLOODPLAINS WITH BFE BUT WITHOUT ESTABLISHED FLOODWAYS OR NON-ENCROACHMENT AREAS.
   Along rivers and streams where Base Flood Elevation (BFE) data is provided but neither floodway nor non-encroachment areas are identified for a special flood hazard area on the FIRM or in the FIS, no encroachments, including fill, new construction, substantial improvements, or other development, shall be permitted unless certification with supporting technical data by a registered professional engineer is provided demonstrating that the cumulative effect of the proposed development, when combined with all other existing and anticipated development, will not increase the water surface elevation of the base flood more than one foot at any point within the community.
(Ord. passed 12-1-03)
§ 153.50  FLOODWAYS AND NON-ENCROACHMENT AREAS.
   (A)   Located within the special flood hazard areas established in § 153.04 are areas designated as floodways or non-encroachment areas.
   (B)   The floodways and non-encroachment areas are extremely hazardous areas due to the velocity of floodwaters that have erosion potential and carry debris and potential projectiles.
   (C)   The following provisions shall apply to all development within such areas:
      (1)   No encroachments, including fill, new construction, substantial improvements, and other developments shall be permitted unless it has been demonstrated through hydrologic and hydraulic analyses performed in accordance with standard engineering practice that the proposed encroachment would not result in any increase in the flood levels during the occurrence of the base flood. Such certification and technical data shall be presented to the Floodplain Administrator prior to issuance of Floodplain Development Permit.
      (2)   If division (C)(1) above is satisfied, all development shall comply with all applicable flood hazard reduction provisions of this chapter.
      (3)   No manufactured homes shall be permitted, except replacement manufactured homes in an existing manufactured home park or subdivision provided the following provisions are met:
         (a)   The anchoring and the elevation standards of § 153.46(C); and
         (b)   The no encroachment standards of division (C)(1) above are met.
(Ord. passed 12-1-03)
§ 153.51  STANDARDS FOR AREAS OF SHALLOW FLOODING (AO ZONES).
   (A)   Located within the special flood hazard areas established in § 153.04, are areas designated as shallow flooding areas.
   (B)   These areas have special flood hazards associated with base flood depths of one to three feet where a clearly defined channel does not exist and where the path of flooding is unpredictable and indeterminate.
   (C)   The following provisions shall apply within such areas:
      (1)   All new construction and substantial improvements of all structures shall have the lowest floor, including basement, elevated to the depth number specified on the Flood Insurance Rate Map (FIRM), in feet, above the highest adjacent grade. If no depth number is specified, the lowest floor, including basement, shall be elevated at least to the regulatory flood protection elevation as defined for the special flood hazard areas where no BFE has been established.
      (2)   All new construction and substantial improvements of non-residential structures shall have the option to, in lieu of elevation, be completely flood-proofed together with attendant utilities and sanitary facilities to or above that level so that any space below that level is water-tight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. Certification is required as per §§ 153.26(C) and 153.46(B).
(Ord. passed 12-1-03)
§ 153.52  CRITICAL FACILITIES.
   New construction or substantial improvement of any critical facility is prohibited in all areas of special flood hazard and in all 500-year flood plains, unless all of the following provisions are met.
   (A)   No feasible alternative site exists for construction of an equivalent facility within the jurisdiction boundaries of Greene County.
   (B)   The facility has the lowest floor, including basement, of all structures elevated no lower than one foot above the 500-year flood elevation. Should solid foundation perimeter walls be used to elevate a structure, openings sufficient to facilitate the unimpeded movements of flood waters shall be provided. Structures may be flood-proofed to the flood protection level in lieu of elevation provided that all areas of the structure below the required elevation are water-tight with walls substantially impermeable to the passage of water, using structural components having the capability of resisting hydrostatic and hydrodynamic loads and the effect of buoyancy. A registered professional engineer or architect shall certify that the standards of this section are satisfied. If the 500-year flood plain is not identified on the FIRM and the facility is located within 1,000 feet of the boundary of an area of special flood hazard where no base flood data is provided, certification with supporting technical data by a registered professional engineer shall be provided that the facility is elevated or flood-proofed no lower than one foot above the 500-year flood elevation, unless it is certified that the facility located outside the 500-year flood plain.
   (C)   The facility has at least one access road connected to land outside the 500-year flood plain that is capable of supporting a 4,000-pound vehicle. The top of the access road must be no lower than one half feet the elevation of the 500-year flood.
(Ord. passed - -)
LEGAL STATUS PROVISIONS
§ 153.65  EFFECT ON RIGHTS AND LIABILITIES UNDER EXISTING FLOOD DAMAGE PREVENTION ORDINANCE.
   This chapter in part comes forward by re-enactment of some of the provisions of the flood damage prevention ordinance enacted March 21, 1995 as amended, and it is not the intention to repeal but rather to re-enact and continue to enforce without interruption of such existing provisions, so that all rights and liabilities that have accrued thereunder are reserved and may be enforced. The enactment of this chapter shall not affect any action, suit, or proceeding instituted or pending. All provisions of the flood damage prevention ordinance of Greene County enacted on March 21, 1995, as amended, which are not reenacted herein are repealed.
(Ord. passed 12-1-03)
§ 153.66  EFFECT UPON OUTSTANDING BUILDING PERMITS.
   Nothing herein contained shall require any change in the plans, construction, size, or designated use of any development or any part thereof for which a Floodplain Development Permit has been granted by the Floodplain Administrator or his or her authorized agents before the time of passage of this chapter; provided, however, that when construction is not begun under such outstanding permit within a period of six months subsequent to passage of this chapter or any revision thereto, construction or use shall be in conformity with the provisions of this chapter.
(Ord. passed 12-1-03)
Loading...