Review of Flood Planning and Management for Urban Drainage System

Major problem that India is currently facing every year is urban flooding. Urban flooding becomes a regular phenomenon in non-rural areas. Urban floods are caused due to rising population density and rapidly growing urban areas. Urban flooding is also caused by heavy rainfall due to inadequate drainage capacity. It causes damage to structure and other property and also it affects the work by affecting traffic and other activities. Multiple factors weaken a drainage system and its performance lowers in time. There are several aspects such as heavy rainfall, spontaneous urbanization, inappropriate drainage, population and poor topography that lead to more urbanization etc. The problem can be solved to a large degree by appropriate management of drainage system. For world's current engineers and city designers, designing an effective storm water drainage plan has become the want to avoid the issue of regular flooding during the rainy season. In Indore city rainfall is increasing year by year, therefore it is essential to design storm drainage network in Indore city for the Institute of Indore. Therefore, in this study storm water drainage system has been design for the IET institute Indore. A dynamic rainfall-runoff simulation model is made for IET-DAVV campus by using EPA SWMM 5.1. It is useful to know the response of catchment for a rainfall occurrence (single event or long-term event/continuous).For model land characteristics and rainfall characteristics is inserting. In model we used gridded rainfall data which is collected from IMD. The drainage area has been divided into various sub-catchments as S1 to S14 and confirming to the elevation outfall is provided. In this study Green-Ampt infiltration model is applied for the calculation of infiltration and Dynamic wave routing is applied for flow routing analysis. The rain facts for the interval 25 years used in this study. SWMM model has been including in this study for the design of storm drainage network. The storm water drainage system designed minimum 0.3 m and maximum 0.9 m diameter for the study area. The storm drainage system designed in this study is capable to drain water effectively form the campus.