(a) All proposed subdivisions shall have a storm system designed to serve the area being developed. It shall be compatible with any adjacent storm drainage system. The storm drainage system shall be designed in such a manner so as to minimize the effects on all downstream properties. The preliminary drainage plan shall show the general suitability of the proposed development to support a stormwater management system.
(b) The preliminary drainage plan shall be due at the time of preliminary plan submittal and shall reflect a two (2) foot topographical contour map which consists of two (2) parts:
(1) The major system is comprised of the 100-year flood route. This system shall be laid out in a manner which directs all excess stormwater into a detention or retention area.
(2) The minor system is comprised of storm sewers, inlets, etc.
(c) This plan shall also include the following information:
(1) Detention or retention facilities that are required for each subdivision.
(2) The approximate location of any 100-year flood boundary areas.
(d) The City's Authorized Agent may require additional information from the developer if the site warrants such.
(e) The existing contours, normally with intervals of two (2) feet, referenced to United States Geological Survey (U.S.G.S.) Datum, as required by the City's Authorized Agent.
(Ord. 73-2021. Passed 1-18-22.)