In the last few decades, urban flooding has been considered a serious and unavoidable problem for many cities worldwide. Climate change and rapid urbanization have contributed significantly to the increase in flood risk. To reduce the risk of floods, green roofs are one of the solutions to efficiently control rainwater. Within this work, the green roof was simulated by using the Storm Water Management Model (SWMM) with the Low Impact Development (LID) Controls module. This research aims to show the potential of green roofs for the reduction of peak flow and runoff; at the same time, the impact of vegetated roofs on drainage capacity is presented. Thus, the hydrology and hydraulic performance between extensive and intensive green roof types on the retention of storm water runoff are discussed.


green roof, runoff, flood, surcharge, SWMM model

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