Modelling of Urban Flooding in Dhaka City
نویسندگان
چکیده
Flooding in urban areas is an inevitable problem for many cities in Asia. In Bangladesh, Dhaka has serious problems related to urban flooding. The situation was highlighted in September 1996 when residences experienced ankle to kneedeep water on the streets. Daily activities in parts of the city were nearly paralyzed and heavy traffic jams occurred due to stagnant water on the streets. The study has depended on a combined approach of physically based modeling and GIS. The urban drainage is structured by MOUSE for the basis of two networks, one simulating the free-surface flow over the streets and one for the sewer pipe system. The interaction between street and pipe system is modeled in a simple way, but allows for a detailed representation of the real-life situation in which freesurface flows over the streets are significant. In 1997, Surface Water Modelling Centre carried out a pilot study about Storm Water Drainage Modelling for Dhaka City. This study is performed as an extension and improvement of pilot study in terms of updating and analysing drainage system together with suggestion of alleviation scenarios to relieve flood problems, i.e. feasibility study of applying real time control to urban drainage system to reduce flood problem.
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