ANNOUNCEMENTS
Urban floods have become the most chronic natural calamity that upsets the most populous country of the world. Considering the prevailing status of sewerage systems, that cause recurrent flooding and leads to huge loss of life and property, it becomes necessary to look into the situation more carefully and come up with an adequate plan, design, and maintenance framework to help overcome issues in urban areas. Deterrence of such phenomena is not likely but with evolution in computer technology, flood prone areas can be distinguished with the help of a hydrodynamic models. This study illustrates preliminary attempt at fabricating an “urban flood model” by integrating one dimensional hydraulic model with a two dimensional surface model in order to surmount the disadvantages of individual modelling tactic. Model’s response to changes of rainfall-input was evaluated by using 3 different rainfall events viz. moderate rainfall, highest rainfall received in last 20 years and an extreme rainfall. Model was also modified to assess if the situation of flooding can be controlled by making some alterations in the design. The study concluded the extent of flooding increased with an increase in rainfall. Also, the modified model demonstrated less flooding in comparison to the original model.
Keywords: Urban Floods, Sewerage System, 1-D hydraulic model, 2-D Surface model, Coupled 1D-2D model.
