skip to main content

Flood Hazard Mapping in Residential Area Using Hydrodynamic Model HEC-RAS 5.0

*Muhammad Baitullah Al Amin scopus  -  Sriwijaya University, Indonesia
Reini Silvia Ilmiaty  -  Sriwijaya University, Indonesia
Ayu Marlina scopus  -  University of Tridinanti Palembang, Indonesia

Citation Format:
The flood hazard rating is one of the essential variables in flood risk analysis. The identification of flood-prone areas urgently requires information about flood hazard zones. This research explains the method to develop flood hazard map by using hydrodynamic modeling in the residential areas. The hydrodynamic model used in this research is HEC-RAS 5.0, which can simulate the one- and two-dimensional flow regimes. The study area is Bukit Sejahtera and Tanjung Rawa residences located in Palembang City with a total area of about 200 ha, where the Lambidaro River was frequently overflowing caused flood inundation in the area. There are five indicators of flood hazard being analyzed, i.e., 1) flood depth, 2) flow velocity, 3) energy head, 4) flow force, which is the result of multiplication between flood depth and the square of flow velocity, and 5) intensity, which is the result of multiplication between flood depth and the flow velocity. The simulation results show that the flood hazard rating in the study area ranges from high to low level. The zones with a high flood hazard rating are dominated by the area around or near to the river, whereas the further zones have a moderate and low level of flood hazard rating. The flood depth indicator has a more significant influence than the flow velocity on the flood hazard level in the study area. This research is expected can contribute to the development of flood map and flood control methods in advance.
Fulltext View|Download
Keywords: Flood hazard; Flood risk; Flood simulation; HEC-RAS; GIS
Funding: University of Sriwijaya; USAID-SHERA

Article Metrics:

  1. Al Amin, M. B., Sarino, S., Haki, H., Ilmiaty, R. S., & Marlina, A. (2018). Development of Flood Inundation Map Using UAV-Based DEM on Residential Area. In Djoko Legono (Ed.), The 21st IAHR-APD Congress (pp. 1089–1096). Yogyakarta, Indonesia: Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada. Retrieved from
  2. Al Amin, M. B., Sarino, & Haki, H. (2017). Floodplain Simulation for Musi River Using Integrated 1D / 2D Hydrodynamic Model. In MATEC Web of Conferences. SICEST 2016 (Vol. 5023, pp. 1–5). Bangka, Indonesia. Retrieved from
  3. Amin, M. B. Al, Sarino, S., & Sari, N. K. (2015). Visualisasi Potensi Genangan Banjir di Sungai Lambidaro Melalui Penelusuran Aliran Menggunakan HEC-RAS Studi Pendahuluan Pengendalian Banjir Berwawasan Lingkungan. In Seminar Nasional Teknik Sipil (SENATS) (pp. 123–132). Denpasar, Bali: Teknik Sipil, Universitas Udayana
  4. Brunner, G. W. (2016). HEC-RAS River Analysis System: Hydraulic Reference Manual Version 5.0. U.S. Army Corps of Engineers, Hydrologic Engineering Center
  5. Brunner, G. W., Wre, D., Piper, S. S., Jensen, M. R., Chacon, B., & Ph, D. (2015). Combined 1D and 2D Hydraulic Modeling within HEC-RAS Two-Dimensional Modeling Capabilities. In World Environmental and Water Resources Congress 2015 (pp. 1–12). ASCE
  6. Council, N. R. (2009). Mapping the zone: Improving flood map accuracy. National Academies Press
  7. HR Wallingford. (2006). Flood Risks to People, Phase 2: FD2321/TR2 Guidance Document. United Kingdom: Defra / Environment Agency, Flood and Coastal Defence R&D Programme
  8. Neto, A. R., Batista, L. F. D. R., & Coutinho, R. Q. (2016). Methodologies for generation of hazard indicator maps and flood prone areas: municipality of Ipojuca/PE. Revista Brasileira de Recursos Hídricos, 21(2), 377–390.
  9. Patel, D. P., Ramirez, J. A., Srivastava, P. K., Bray, M., & Han, D. (2017). Assessment of flood inundation mapping of Surat city by coupled 1D/2D hydrodynamic modeling: a case application of the new HEC-RAS 5. Natural Hazards, 89(1), 93–130.
  10. Quiroga, V. M., Kure, S., Udo, K., & Mano, A. (2016). Application of 2D numerical simulation for the analysis of the February 2014 Bolivian Amazonia flood: Application of the new HEC-RAS version 5. RIBAGUA - Revista Iberoamericana del Agua, 3(1), 25–33.
  11. Situngkir, F., Sagala, S., Yamin, D., & Widyasari, A. (2014). Spatial Relationship Between Land Use Change and Flood Occurrences in Urban Area of Palembang, Working Paper Series, Resilience Development Initiative, (15), 19. Retrieved from
  12. Solín, Ľ., & Skubinčan, P. (2013). Flood Risk Assessment and Management: Review of Concepts, Definitions and Methods. Geographical Journal, 65(1), 23–44

Last update:

No citation recorded.

Last update: 2024-06-12 16:07:01

No citation recorded.