DOIONLINE

DOIONLINE NO - IJAMCE-IRAJ-DOIONLNE-8297

Publish In
International Journal of Advances in Mechanical and Civil Engineering (IJAMCE)-IJAMCE
Journal Home
Volume Issue
Issue
Volume-4,Issue-3  ( Jun, 2017 )
Paper Title
Credibility Establishment of A Hydrological Model: Sensitivity Analysis, Calibration and Validation (A Case Study on A Tropical River Basin In Malaysia)
Author Name
Sina Alaghmand, Amin Talei
Affilition
Discipline of Civil Engineering, School of Engineering, Monash University Malaysia, Jalan Lagoon Setalan, Bandar Sunway, Selangor, 47500, Malaysia.
Pages
98-104
Abstract
Present paper describes the detailed procedure of credibility establishment of HEC-HMS hydrological model for a tropical river basin in Malaysia. These include sensitivity analysis, calibration and validation processes. Results showed that the generated runoff volume and runoff peak discharge are significantly sensitive to imperviousness, initial discharge of recession method, peak flow coefficient, lag-time, hydraulic conductivity, moisture deficit and wetting front suction. On the other hand, initial loss in Green-Ampt method, recession constant and threshold flow in recession method have no meaningful effects on the runoff volume and runoff peak discharge. Moreover, median of calibrated parameter values during calibration of hydrological modelling is more accurate for validation process in comparison with average and mode values. Keywords- Hydrological Modelling, Sensitivity Analysis, Calibration, Validation, HEC-HMS.
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