The reservoir porous as a solution to control the urban flood in Pagarsih road Bandung

Abstract

Urban floods have become a critical phenomenon recently. Which are mostly caused by the fast increase of building growths. The need of mitigation of floods to save road users becomes an important aspect in urban area. This paper is to find a solution the case of flood in Pagarsih Road which was occurred at 2016 with standard the rain falls cycles for 25 years. The characteristic of Pagarsih Road floods is due to the overflow of Citepus River which lays beside the road. A kind of the road infrastructure proposed to solve the problem is a porous reservoir which functioned as the water storage of run off. The method used in this research is a simulation using a physical model as well as the manual calculation using Hec Ras. The model is to simulate the existing condition as well as the proposed solutions. The alternative solution developed is tested by providing several reservoir volumes and also by adding porous facilities to increase the reservoir capacity. The validation test is carried out by using HECRAS-5.0.7 to achieve a certain reliable solution. The result shows that the reservoir storage capacity is the dominant parameter to mitigate the risk of floods.