Flood Hydrograph Modeling Based on Rainfall Data in The Dayeuhkolot Watershed Using Hec-Hms

Ronny Eka Putra; Faizal Immaddudin Wira Rohmat; Dhemi Harlan; Had  Kardhana; Mohammad Farid

Ronny Eka Putra Master Program of Water Resources Management, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, MPSDA Building, Jalan Ganesa No. 10, Bandung 40132, West Java, Indonesia
Faizal Immaddudin Wira Rohmat Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, FTSL Building, Jalan Ganesa No. 10, Bandung 40132, West Java, Indonesia
Dhemi Harlan Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, FTSL Building, Jalan Ganesa No. 10, Bandung 40132, West Java, Indonesia
Had Kardhana Master Program of Water Resources Management, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Jalan Ganesa No. 10, Bandung 40132, West Java, Indonesia
Mohammad Farid Water Resources Development Center, Bandung Institute of Technology, CIBE Building 5th Floor, Jalan Ganesa No. 10, Bandung 40132, West Java, Indonesia

Keywords: land cover, GSMaP, flood hydrograph, HEC – HMS, ArcGIS

Abstract

Dayeuhkolot, located 9 km from the center of Bandung City or about 18 km from Soreang, is a Citarum sub-watershed that experiences flooding every year. The causes of flooding are natural factors such as high rainfall and human factors such as blocked or damaged drainage channels, inappropriate land use, deforestation in the upstream areas, etc. Floods cause loss of life and property damage. Population growth results in more urbanization, airtight areas, less infiltration, and more significant flood peaks and runoffs. The flood hydrograph projection uses this study's GSMAP rainfall data and land cover data. The flood hydrograph method used is the SCS curve number method, which obtained 12 river discharge events of more than 300 m³/second from 2018 to 2022. Then calibration and validation were carried out using the trial-and-error method using the HEC – HMS software to obtain parameter values hydrology and ArcGIS to obtain the value of the land cover curve for the next stage of calibrating the values obtained from the HEC - HMS modeling by classifying land cover for 2018 - 2022. The predictions and calibration results of hydrological parameters are input for future flood hydrograph projections.

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Flood Hydrograph Modeling Based on Rainfall Data in The Dayeuhkolot Watershed Using Hec-Hms

Abstract

References

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