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Predicting Sediment Load and Runoff in Geo WEPP Environment from Langat Sub Basin, Malaysia


Affiliations
1 School of Environmental and Natural Resources Sciences, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
2 School of Chemical Sciences and Food Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
3 Bangladesh Forest Department, Bono Bhaban, Agargaon, Dhaka 1207, Bangladesh
4 Institute for Environment and Development (LESTARI), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
 

This study monitors and predicts the sediment load and runoff at the UKM catchment - the Langat sub basin of Peninsular Malaysia using the WEPP software interfaced in ArcGIS 10.2. Within Geo WEPP and WEPP interfaces, TOPAZ algorithm and climate generator (CLIGEN) were used to parameterize the aspects of land cover, slope, climate, soil and topographic data and estimate stochastic climatic parameters respectively. Range of soil parameters was defined by utilizing soil properties such as frequency of soil particles, CEC and OC. The management factor was generated applying EPIC algorithm for land use types during the simulation period 2000 to 2014. The study shows that variation occurs between sediment prediction by GeoWEPP and the measured value of the same. The findings provide further the useful information about the measuring technique and status of the sediment load and runoff for the soil erosion management. This study suggests the longer span of monitoring as part of the comprehensive management plan is needed for the Langat River Basin.

Keywords

WEPP Interface, Flow Accumulation, TOPAZ Algorithm, Sediment Load.
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  • Predicting Sediment Load and Runoff in Geo WEPP Environment from Langat Sub Basin, Malaysia

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Authors

Mohammad Zahirul Haque
School of Environmental and Natural Resources Sciences, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
SahibinAbd Rahim
School of Environmental and Natural Resources Sciences, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
Md. Pauzi Abdullah
School of Chemical Sciences and Food Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
Ahmad Fuad Embi
Bangladesh Forest Department, Bono Bhaban, Agargaon, Dhaka 1207, Bangladesh
Rahmah Elfithri
Institute for Environment and Development (LESTARI), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
Tukimat Lihan
School of Environmental and Natural Resources Sciences, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
Mazlin Mokhtar
Institute for Environment and Development (LESTARI), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia

Abstract


This study monitors and predicts the sediment load and runoff at the UKM catchment - the Langat sub basin of Peninsular Malaysia using the WEPP software interfaced in ArcGIS 10.2. Within Geo WEPP and WEPP interfaces, TOPAZ algorithm and climate generator (CLIGEN) were used to parameterize the aspects of land cover, slope, climate, soil and topographic data and estimate stochastic climatic parameters respectively. Range of soil parameters was defined by utilizing soil properties such as frequency of soil particles, CEC and OC. The management factor was generated applying EPIC algorithm for land use types during the simulation period 2000 to 2014. The study shows that variation occurs between sediment prediction by GeoWEPP and the measured value of the same. The findings provide further the useful information about the measuring technique and status of the sediment load and runoff for the soil erosion management. This study suggests the longer span of monitoring as part of the comprehensive management plan is needed for the Langat River Basin.

Keywords


WEPP Interface, Flow Accumulation, TOPAZ Algorithm, Sediment Load.

References