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)    Enclosed Storm Sewer. An enclosed storm sewer system shall be provided and connected to an existing storm sewer system, drainage ditch or other waterway as determined by the Engineer. 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, drain inlets and a connection for each lot.
   (b)    Open Drainage System. Subject to the approval of Council and the Engineer, the developer may rechannel any watercourse through his property in order to contain the storm drain flow within a lesser width. 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 Council or as directed by the Engineer. The developer shall be responsible for clearing the drainage way of all debris as a condition of acceptance. The Engineer shall determine the proper cross section, grade, width of channel and horizontal alignment.
   (c)    Design Standards. The drainage system shall be designed in accordance with standards set by the Engineer.
   (d)   All new residential construction, including additions and alterations to existing residential dwellings, shall include an inlet basin drainage system where the City Engineer determines that a lot cannot contain its own storm water runoff and said runoff is likely to impact adjoining lots. Said drainage system shall be constructed in the rear yard or wherever dictated by the topography of the lot.
      In new residential subdivisions, the developer shall be required to install the drainage system as part of the subdivision’s major storm system. Should the construction of the drainage system substantially alter existing wooded areas and the inlet basin can be tied into the downspout system for the lot, then the property owner shall be required to construct the inlet basin with a connection to said downspout. (Ord. 1999-16. Passed 3-9-99.)