(A) It is recognized that smaller streams and drainage channels serving Randolph County may not have sufficient capacity to receive and convey storm water runoff, resulting when land use changes from open or agricultural use to a more urbanized use. It is further recognized that deposits of sediment from developments during and after construction can reduce capacities of storm sewers and drainage systems and result in damages to receiving lakes and streams.
(B) Therefore, it shall be the policy of the Board that the storage and controlled release of storm water runoff shall be required of all new major subdivision residential development, commercial, industrial, and institutional development, and any commercial, industrial or institutional redevelopment in or within two miles of the corporate limits of the city. The release rate of storm water from developed lands shall not exceed the release rate from the land area in its present land use.
(C) If it is determined that the standard release rate of storm water has contributed to or caused flooding in the existing state, the allowable release rate may be reduced to a lower limit. Conversely, there are some circumstances where detention is not justified and may be waived by the Board.
(D) Because topography and the availability and adequacy of outlets for storm runoff vary with almost every site, the requirements for storm drainage tend to be an individual matter for any project. It is recommended that each proposed project be discussed with the City's Engineer or Street Commissioner at the earliest practical time in the planning stage.
(Ord. 2001-01, passed 1-15-01; Am. Ord. 2011-7, passed 7-18-11)