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All Journal IJEBD (International Journal Of Entrepreneurship And Business Development)
Idhar Sahdar
Tarumanegara University Jakarta
Economics, Econometrics & Finance

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The Adoption of HEC-RAS 2D Application in Flood Assessment of the Akelaka Watershed Idhar Sahdar; Dede Rohmat; Wati A. Pranoto
IJEBD (International Journal of Entrepreneurship and Business Development) Vol 5 No 3 (2022): May 2022
Publisher : LPPM of NAROTAMA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (810.117 KB) | DOI: 10.29138/ijebd.v5i3.1866

Abstract

Analysis of Peak Flood Discharge in Small-Scale River Flow Area Idhar Sahdar; Dede Rohmat; Wati A. Pranoto
IJEBD (International Journal of Entrepreneurship and Business Development) Vol 6 No 2 (2023): March 2023
Publisher : LPPM of NAROTAMA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/ijebd.v6i2.2128

Abstract

Purpose: Flood discharge is a critical component in reducing the impact of flooding in a given location. An analytical technique based on a watershed's morphometric properties is a method for those without a gauge, particularly in small-scale watersheds. Design/methodology/approach: The synthetic unit hydrograph (HSS) approach is used in this study to analyze flood output. This study was conducted in the Akelaka watershed, a sub-watershed of Tayawi. This analysis relies on spatial and attributes data. A spatial study of watershed morphometric properties was obtained by integrating digital elevation model (DEM) data into geographic information system-based applications (GIS). Meanwhile, using rainfall data from 2019 to 2021, a statistical approach is used to calculate the design rainfall intensity, which is then used as an input variable in the HSS analysis. Findings: The findings of hydrographic analysis using Nakayasu HSS demonstrate that the peak flood time (Tp) is 2.8 hours with a maximum flood discharge (Qp) of 56.636 m3/s, 76, 987 m3/s, 88,091 m3/s, and 101,279 m3/s for return periods of two years, five years, ten years, and 25 years. Paper type: Research paper
Co-Authors Dede Rohmat Wati A. Pranoto Wati A. Pranoto