No plat shall be approved for any subdivision which is subject to flooding as defined in the County Zoning Ordinance, unless the plat conforms to the applicable requirements of the Ordinance.
(A) No plat shall be approved for any subdivision or part thereof which is subject to periodic flooding or which contains inadequate drainage facilities or which makes adequate drainage of streets impossible. However, if the subdivider agrees in writing to make improvements at his expense which will, in the opinion of the Planning Commission, make the area safe for human occupancy and use further provides adequate drainage for streets, then the preliminary and final plat may be approved.
(B) Storm water drainage shall be discharged to marsh lands, swamps, retention basins or other treatment facilities. Diversion of storm water to marshlands or swamps shall be considered by the Planning Commission for existing or planned surface drainage. Marshlands and swamps used for storm water shall provide for natural or artificial water level control.
(C) No existing ditch, stream, drain or drainage canal shall be deepened, widened, filled, rerouted or filled without written permission from the proper authority.
(D) Where artificial channels must be constructed to augment the natural drainage system, such channels as well as the natural drainage ways may be planned as part of a recreation trail system. Channels shall be designed to be aesthetically compatible for recreational trail use.
(E) The drainage system shall be constructed and operational during construction; or as approved by theCountyEngineer.
(F) The natural drainage system shall be used as far as is feasible for the storage and flow of runoff.
(G) The County Board shall not approve the final plat unless in addition to the requirements of Section 34‑5‑17 above, the topographical and profile studies to be submitted with the subdivision plat have on their face the certification of a Registered Professional Engineer, and the owner of the land or his duly authorized attorney. The certification shall state in effect that to the best of their knowledge and belief:
the drainage of surface waters will not be changed by subdivision construction; or
if surface drainage will be changed, adequate provision has been made for collecting such water into designated public areas or approved drains. In addition, certification must be made that such water will not cause damage to adjoining properties because of subdivision construction.
These topographical and profile studies shall not be recorded but shall be filed as a public document.