Flood prediction, its risk and mitigation for the Babura River with GIS

Friendly City 4 'From Research to Implementation For Better Sustainability'

地球科学;经济学

Tarigan, A.P.M.^1 ; Hanie, M.Z.^2 ; Khair, H.^2 ; Iskandar, R.^1

Civil Engineering Department, Faculty of Engineering, Universitas Sumatera Utara, Kampus USU, Jl. Almamater, Medan

20155, Indonesia^1

Environmental Engineering Department, Faculty of Engineering, Universitas Sumatera Utara, Kampus USU, Jl. Almamater, Medan

20155, Indonesia^2

关键词: Evacuation routes;    Flood disaster;    Flood mitigation;    Flood prediction;    Inundation areas;    Risk calculation;    Risk estimation;    Spatial analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/126/1/012119/pdf
DOI  :  10.1088/1755-1315/126/1/012119

来源: IOP

【 摘 要 】

This paper describes the flood prediction along the Babura River, the catchment of which is within the comparatively larger watershed of the Deli River which crosses the centre part of Medan City. The flood plain and ensuing inundation area were simulated using HECRAS based on the available data of rainfall, catchment, and river cross-sections. The results were shown in a GIS format in which the city map of Medan and other infrastructure layers were stacked for spatial analysis. From the resulting GIS, it can be seen that 13 sub-districts were likely affected by the flood, and then the risk calculation of the flood damage could be estimated. In the spirit of flood mitigation thoughts, 6 locations of evacuation centres were identified and 15 evacuation routes were recommended to reach the centres. It is hoped that the flood prediction and its risk estimation in this study will inspire the preparedness of the stakeholders for the probable threat of flood disaster.