In order to protect the health, safety and general welfare of the people, the City Planning Commission shall reject any proposed subdivision located in an area subject to periodic flooding aa determined and illustrated in studies or publications by U. S. Department of Housing and Urban Development, the Ohio Department of Natural Resources or other recognized documents or authorities.
Flood control or storm drainage facilities shall be provided as follows:
(l) Access to flood control or storm drainage ditches and channels shall be by means of easements. Such easements shall not be less than twelve feet in width, exclusive of the w1dth o: the ditch, or channel, and an easement of this type shall be provided on one side of a flood control or storm drainage ditch, channel, detention or retention basin or similar type facility.