Real World ScenarioThe real world scenario I will use is a model created by the United States Environmental Protection Agency (EPA). This is a Stormwater Management Model (SWMM). This model is used throughout the world for planning, analysis and design related to stormwater runoff combined with sanitary sewers and other drainage systems in urban areas (Huber, 1988: 1). The stormwater management model can also be used in non-urban areas. This model is mainly used to perform urban runoff analysis and can be divided into different components, just like the real-world model. These components are: preliminary screening models. models. In this model, no computers are used and are used to determine the amount of runoff and quality issues in areas. - Planning models used for an overall assessment of the urban runoff problem as well as the quality and costs of procedures. (Huber, 1988: 2). -Design models that simulate storm events to get a sense of what happens during these events (Huber,