The purpose of a Stormwater Management Plan (SWMP) or Stormwater Mangement Strategy (SWMS) is to highlight the current and future needs of the site with regard to external and internal stormwater flows.  The ultimate goal is to provide an outline of the key stormwater infrastructure needed in order to meet the expectations and obligations of development. A stormwater report like this should: Sometimes the development of a project site requires the revisioning or evolving of a previous drainage strategy or development plan established by others (often the relevant authority). This can often be the result of new information, more accurate survey, differing timelines, change in government approach and new policies,…