Development of Multi Criteria Analysis Model for Best Sediment Management Techniques in Kuala Krai, Malaysia
Keywords:
Runoff, MCA, sediment, sensitivity analysis, soil erosionAbstract
In tropical countries like Malaysia, high rainfall intensities cause high rates of soil erosion which yields high rates of sedimentation. Soil disturbance activities (cut and fill activities) accelerate the rate of soil dislocation and results in sedimentations that impacts the ambient environment. The aim of this research is to develop a Weighted Summation Multi Criteria Analysis (MCA) Model which can be considered as a decision support tool and protocol to identify the best sediment management practices which assist the Malaysian water industry in assessing the relative sustainability of stormwater systems. A performance matrix was built between the sediment control alternatives / techniques (i.e. sediment basins, silt fence, sand bag barrier and rock filter) versus the technical, economic, environmental and social criteria which reflects the expert’s opinions. Results from the study show that the sediment basin considered the best technique among other techniques in which the sensitivity analysis showed very strong decision made and not sensitive to any of the criteria adopted in the study. The developed model is helpful for the engineers and decision makers to find the best sediment control measures in any region subjected to soil disturbance activities.
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