Green infrastructure modelling for assessment of urban flood reduction in Ho Chi Minh city

Abstract

Urban flooding has become a severe problem in Ho Chi Minh City. Green infrastructure (GI) have been considered as a promising solution. GI is not only beneficial for urban flood reduction but also improved microclimatic conditions, landscape values. Recently, with the advancement of science and technology, the mathematical models have been developed and applied in various fields including urban flood. This paper presents the initial results of applying 2 urban water models, namely Tuflow and SWMM (Stormwater management model). The Tuflow mathematical model was used to simulate 2 dimensional (2D) surface model while the SWMM was developed for 1 dimensional (1D) surface and drainage water system. These models are later served in assessing the effectiveness of green infrastructure development in urban flood reduction. The models were developed at a specific study area (Tham Luong - Ben Cat Catchment) in Ho Chi Minh city. Results can be used for urban planning especially for urban flood management in Ho Chi Minh city.