(A) This subchapter establishes standards for the planning and design of drainage systems and stormwater control facilities within the jurisdictional area of the City of Crawfordsville. The purpose of this subchapter is to control stormwater drainage facilities, grading, excavation, clearing, and other alterations of the land in order to limit the dangers of personal injury or property damage that may be caused by stormwater runoff. In addition, these provisions are needed to secure the eligibility for flood insurance under Public Law 1016 and thereby promote the public health, safety, and general welfare of the citizens of Crawfordsville.
(B) It is recognized that smaller streams and drainage channels serving the City of Crawfordsville may not have sufficient capacity to receive and convey stormwater runoff, as land changes from agricultural or open use to a more urbanized use. It is further recognized that deposits of sediment from developments during and after construction activities can reduce capacities of storm sewer drainage systems and result in damages to the receiving water bodies. Therefore, it shall be the policy of the City of Crawfordsville that the storage and controlled release of stormwater runoff shall be required of all new development, and redevelopment and other new construction in the City of Crawfordsville’s jurisdiction. The release rate of stormwater from developed lands shall not exceed the release rate from the land area in its present land use, as further defined in § 53.58.
(C) Because topography and the availability and adequacy of outlets for stormwater runoff vary with almost every site, the requirements for stormwater drainage tend to be an individual matter for any project. It is recommended that each proposed project be discussed with the Superintendent of Stormwater for the City of Crawfordsville at the earliest practical time in the planning stage.
(Ord. 2-2010, passed 3-8-10)