Universiti Teknologi Malaysia Institutional Repository

Runoff characteristics and application of HEC-HMS for modelling stormflow hydro graph in an oil palm catchment

Yusop, Zulkifli and Katimon, A. and Chan, C. H. (2007) Runoff characteristics and application of HEC-HMS for modelling stormflow hydro graph in an oil palm catchment. In: IWA International Conference on Water Management and Technology Application in Developing Countries, 14-15 May 2007.

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Official URL: https://www.ncbi.nlm.nih.gov/pubmed/17978431

Abstract

Rainfall-runoff processes in a small oil palm catchment (8.2 ha) in Johor, Malaysia were examined. Storm hydrographs show rapid responses to rainfall with a short time to peak. The estimated initial hydrologic loss for the oil palm catchment is 5 mm. Despite the low initial loss, the catchment exhibits a high proportion of baseflow, approximately 54% of the total runoff. On an event basis, the stormflow response factor and runoff coefficient ranges from 0.003 to 0.21, and 0.02 to 0.44, respectively. Peakflow and stormflow volume were moderately correlated with rainfall. The hydrographs were satisfactorily modelled using the Hydrologic Engineering Centre-Hydrologic Modelling System (HEC-HMS). The efficiency indexes of the calibration and validation exercises are 0.81 and 0.82, respectively. Based on these preliminary findings, it could be suggested that an oil palm plantation would be able to serve reasonably well in regulating basic hydrological functions.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:baseflow, rainfall-runoff modelling, stormflow, storm hydrograph
Subjects:T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Science
ID Code:25069
Deposited By: Pn Haliza Zainal
Deposited On:08 May 2012 05:15
Last Modified:20 Jun 2017 07:02

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