Zulkarnain Hassan
Thumbnail Image
Preferred name
Zulkarnain Hassan
Official Name
Zulkarnain, Hassan
Alternative Name
Hassan, Zulkarnain Bin
Hassan
Hassan, Z
Hassan', Z
Main Affiliation
Web Site
Scopus Author ID
55766149700

Research Output

Filters

2
Reset filters

Settings
Now showing 1 - 2 of 2
No Thumbnail Available
Publication

Analysing impact of climate change on hydrological trend in Kelantan river basin using HEC-HMS coupled with SDSM

2023 , Muhammad Zahran Syahmi Armain , Zulkarnain Hassan , Sobri Harun , Mohd Remy Rozainy Mohd Arif Zainol , Ain Nihla Kamarudzaman , Salwa Mohd Zaini Makhtar

Climate change dramatically alters many hydrologic systems, which affects the availability of water and leads to runoff and river discharge. This study assessed the effects of the future scenario of climate change on the monthly river discharge of the Kelantan River Basin, Malaysia. Statistical DownScaling model (SDSM) was used to downscale the rainfall from large climate variables of the second-generation Canadian Earth System Model (CanESM2) under the Representative Concentration Pathways of 8.5 (RCP 8.5) and project future river discharge using the Hydrologic Modeling System (HEC-HMS). From this study, the monthly rainfall and river discharge over the Kelantan River basin will be significantly reduced in the future by 30 and 50% compared to the current period.

View
Thumbnail Image
Publication

Assessing Hydrological Response in the Timah-Tasoh Reservoir Sub-Catchments: Calibration and Validation using the HEC-HMS Model

2024 , N A S Nordin , Zulkarnain Hassan , N M Noor , Ain Nihla Kamarudzaman , A S A Ahmadni

Abstract Hydrological modelling is a tool that is frequently used for assessing the hydrological response of a basin as a result of precipitation. It is also a vital component as water resources and environmental planning management. The study deals with calibrating and validating the hydrological response in the sub-catchments of the Timah-Tasoh reservoir using the hydrological model named Hydrologic Engineering Center – Hydrologic Modelling System (HEC-HMS). This study uses the SCS Curve Number, the SCS Unit Hydrograph, the constant monthly baseflow, and lag routing for the model development. The model was simulated for ten (10) years for calibration and nine (9) years for validation. The model calibration and validation efficiency were assessed using the coefficient of correlation (R). The findings show that the HEC-HMS model performs satisfactorily in simulating the observed daily inflow series, with the R-value of 0.4902-0.5139 during calibration and 0.5047-0.5559 during validation process. Thus, the result obtained from this study can be used as a preliminary development of hydrological modelling of the catchment of the Timah-Tasoh reservoir and can be used for extend application such as water inflow forecasting, impact of land use to the reservoir and others.

View