Flood Estimation Studies using Hydrologic Modeling System (HEC-HMS) for Johor River, Malaysia

This study presented a flood estimation model for Johor River in Kota Tinggi watershed, Malaysia using HEC-HMS (Hydrologic Modeling System). Calibration and validation processes were carried out using different sets of data. Evaluation on the performance of the developed flood model derived using HEC-HMS yield a correlation coefficient R super(2) close to 1. The simulated Q sub(peak) are 150.9 m super(3) sec super(-1), while the observed Q sub(peak) for 10 years record (1997-2006) is 145.12 m super(3) sec super(-1). The percentage of error values are 4% and the performance of the developed flood model derived using the HEC-HMS with R super(2) value is 0.905. Based on these findings, it is suggested that the developed model using HEC-HMS can be used as a tool for estimating Q sub(peak).