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Derivation of the critical rainfall level needed for an early flood warning in the Upper Citarum river basin Indonesia
Harlan D.a, Hadihardaja I.K.a, Kuntoro A.A.a, Enunga,b, Faturachman D.a
a Faculty of Civil and Environmental Engineering, Institut Teknologi, Bandung, Indonesia
b Civil Engineering Department, Politeknik Negeri, Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]Rainfall is one of the common triggering factors of the flood. Bandung City is located in the Upper Citarum river basin. Parts of the city, such as Bojong Sari, Bojong Soang, Cieunteung and Andir Sub district, are in natural floodplains. During the wet season, these areas are frequently flooded. This study analyzed the critical rainfall level that potentially caused flooding. The Hydrologic Engineering Centres Hydrologic Modelling System (HEC-HMS) rainfall-runoff model and the 1D HEC-RAS model were applied. A six storm pattern was simulated to determine the critical rainfall that generated the water depth that was equal to or greater than the critical water surface depth at specific points in the river. Hypothetical rainfall events are used to investigate the response of the river basin at critical cross-sections. It can be considered by different temporal distributions. The amount of rainfall is assumed to be distributed uniformly. The conclusion of this research is that the storm pattern (rainfall depth and rainfall duration) plays a crucial role in determining the critical rainfall at the flood location. The critical rainfall in a specific location is affected by the position at the river cross-section (in the upstream or the downstream area) and the bank full capacity of the river cross-sections.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Critical rainfalls,Flood,River basin,Upper citarum[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]The authors wish to thank the Ministry of Research, Technology and Higher Education and to ITB. This research was funded by the INSINAS Research program the Ministry of Research, Technology and Higher Education (contract number: INS-2/PPK/E/E4/2017).[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.21660/2018.43.50926[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]