A drainage system shall be designed and constructed by the developer as required for the district in which the proposed subdivision is located for the proper drainage of the surface water of the subdivision and each lot as follows:
(a) An Enclosed Storm Sewer System shall be provided where a tile inlet or an outlet with a capacity to receive the discharge is available within one thousand (1,000) feet of the subdivision and a connection made thereto, or where it is determined by the Commission that storm sewers shall be provided and connected to a drainage ditch or other waterway. The system shall have a capacity to serve the subdivision and drainage area of which it is a part. The system shall include pipes, culverts, manholes, catch basins and drain inlets if required, and a connection for each lot.
(b) An Open Drainage System may be permitted when inlets or outlets are not available within one thousand (1,000) feet or the size of outlet is not adequate to receive the discharge, if determined by the Commission. The developer may be required to deed in fee, dedicate, or grant an easement to the City for a drainage channel not less in width than required by a plan or standards adopted by the City, or by the existing topography along the water course. The developer may rechannel any water course through his property in order to contain the storm drain flow within a lesser width. The developer shall be responsible for clearing the drainage way of all debris as a condition of acceptance.
(c) Culverts and Bridges shall be designed and constructed by the developer where natural drainage channels intersect any street right-of-way. Where culverts are required, the following minimum requirements shall be observed:
(1) All culverts shall extend across the entire right-of-way width of the proposed street. The cover over the culvert and its capacity shall be determined by the City Engineer. The minimum diameter of a culvert pipe shall be eighteen (18) inches. Head walls, depending on existing drainage conditions, may be required
(2) Driveway culverts shall have a minimum length of twenty (20) feet. The diameter of driveway culverts shall be subject to the determination of the City Engineer. The driveway culverts shall be laid so as to maintain the flow lines of the ditch or gutter. Head walls may be required.
(d) The Drainage System shall be designed in accord with standards of the City Engineering Department.