Simulating the Rainfall-Runoff using Hydrological Model in the Tropics


  • Ibrahim Abdulrazak Al-Ani National Center for Water Resources Management, Ministry of Water Resources, Baghdad, Iraq
  • Laith Abdulsattar Jabbar General Authority for Dams & Reservoirs, Ministry of Water Resources


PMP, PMF, Modelling, Malaysia


Floods are considered the most destructive forces that impacts the human lives,ambient environment and property. Thus, the current research targeted to estimate Probable Maximum Flood (PMF) for the Perak River using HEC-HMS Hydrological Model. The methods adopted herein this research includes the collection of the related meteorological data and process it using Hershfield’s statistics to produce the PMP values and Geographic Information Systems (ArcGIS) to be used in developing the targeted model. Results show that the performance parameters for both events are considered very good and good whereby for calibration, NSE and PBIAS of 0.873 and -1.76% are obtained while NSE and PBIAS of 0.679 and -8.78% are obtained for validation. Although slight differences are observed from the comparison, it can be concluded that the differences are considered acceptable as the general trend is similar for those simulations. Furthermore, the developed hydrologic model is credible and applicable to describe the hydrological process in Perak River Watershed.


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How to Cite

Al-Ani, I. A. ., & Jabbar, L. A. . (2023). Simulating the Rainfall-Runoff using Hydrological Model in the Tropics. Journal of Water Resources and Geosciences, 2(1), 94–113. Retrieved from