Flood Risk Mapping Using HEC-RAS Software: A Case Study of the Melantai River, Malaysia

Kharamah, Aqsanal (2025) Flood Risk Mapping Using HEC-RAS Software: A Case Study of the Melantai River, Malaysia. S1 thesis, Universitas Andalas.

	Text (Cover and Abstract) Cover and Abstract.pdf - Published Version Download (246kB)
	Text (Chapter 1 Introduction) Chapter 1 (Introduction).pdf - Published Version Download (667kB)
	Text (Chapter 5 Conclusion) Chapter 5 (Conclusion).pdf - Published Version Download (360kB)
	Text (References) References.pdf - Published Version Download (314kB)
	Text (Thesis Fulltext) Thesis Fulltext.pdf - Published Version Restricted to Repository staff only until 19 June 2026. Download (5MB) | Request a copy

Abstract

The increasingly frequent flooding phenomenon in the Kluang region of Johor indicates the need for a comprehensive study of the river flow system and inundation potential. This study aims to map the flood risk in Sungai Melantai using HEC-RAS software as a hydrodynamic simulation tool. The methods used include rainfall analysis with empirical IDF curves, peak discharge estimation using the HSS Snyder method, and unsteady flow modelling at various return periods (25, 50, and 100 years). The simulation results show that some sections of Melantai River have high runoff potential, especially in the 50 and 100-year scenarios, where the water level exceeds the river bank. The resulting inundation maps provide a visualization of the affected area and flood depth that can be used for disaster mitigation and management planning. The findings emphasize the importance of technical interventions and spatial policies to reduce flood risk in the study area. Keywords : Flood Simulation, HEC-RAS model, Inundation

Actions (login required)

View Item