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Flooding is a problem that is often found in cities, especially in the rural areas of Baturaja Permai. When it rains, the quantity of river water exceeds its capacity or becomes too much, and there will be inundation caused by overflowing rivers. Factors of natural events such as high rainfall intensity cause flooding, coupled with factors from human activities. This study aims to investigate flood characteristics by developing an integrated model between hydrology and hydraulics. The development of this flood model is based on the hydrological model of runoff using the synthetic unit hydrograph method Soil Conservation Service (SCS), a one-dimensional (1D) hydraulic model for water flow propagation in macro drainage systems, and two dimensions (2D) for calculations if the river flow exceeds the existing capacity so that it experiences water propagation in the inundation area using the HEC-RAS software. To model the flood inundation it is required data Digital Elevation Model (DEM) was obtained by measuring the height of the land using a Total Station (TS) measuring instrument and analyzed using ArcMap software. The calculation of direct runoff is designed for a 5-year return period. The simulation results indicate that the Baturaja Permai area is an area that is prone to flooding with inundation depth of 0.558 m - 4.692 m and a peak runoff discharge of 15.6 m³/s at a 5-year return period.
Bambang, T. (2008). Hidrologi Terapan.Yogyakarta : Beta Offset
Bharath, A. et al. (2021) ‘Drainage morphometry based sub-watershed prioritization of Kalinadi basin using geospatial technology’, Environmental Challenges. Elsevier B.V., 5(June), p. 100277. doi: 10.1016/j.envc.2021.100277.
Dinar, P. D. A. et al. (2018) ‘Integration of surface water management in urban and regional spatial planning’, International Journal of GEOMATE, 14(45), pp. 28–34. doi: 10.21660/2018.45.18652.
Karamma, R. (2018) ‘Comparison of Model Hidrograf Synthetic Units ( HSS ) with the Model of Hidrograf Observations on DAS Jeneberang Gowa Regency , Indonesia’, 3(2).
Mai, D. T. and Smedt, F. De (2017) ‘A Combined Hydrological and Hydraulic Model for Flood Prediction in Vietnam Applied to the Huong River Basin as a Test Case Study’. doi: 10.3390/w9110879.
Putranto, Dinar Dwi Anugerah, Agus Yuono, M. E. (2020) ‘Analisis Profil Dasar Saluran Untuk Mengurangi Kecepatan Aliran Pada Pengalihan Sungai’, Cantilever, 4247(April). Available at: https://www.cantilever.id/index.php/cantilever/article/view/38/13.
Tamiru, H. and Wagari, M. (2021) ‘Machine-learning and HEC-RAS integrated models for flood inundation mapping in Baro River Basin, Ethiopia’, Modeling Earth Systems and Environment. Springer International Publishing, (0123456789). doi: 10.1007/s40808-021-01175-8.
Venkatcharyulu, S. and Viswanadh, G. K. (2021) ‘Runoff volume model for Godavari sub-basin using HEC-RAS software’, Modeling Earth Systems and Environment. doi: 10.1007/s40808-021-01311-4.
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