Investigation of flood risk areas in Ünye district with Best-Worst method using geographic information systems
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Abstract
One of the main issues of land management is identifying risky areas. Floods are natural events that develop depending on the climate and topographic characteristics of the regions. The effect of human activities is also seen in flood events. In this study, flood risk areas were determined in Ünye district using Geographical Information Systems (GIS). The Best-Worst Method (BWM), one of the Multi-Criteria Decision Making Methods (MCDM), was used in the study. First of all, the criteria affecting flood formation were determined as slope, aspect, height, and land use based on previous studies. Subclasses for each criterion were determined and weighted by the BWM method. The criteria were reclassified according to the weights given to the subclasses. The flood risk map was obtained by overlaying the criteria according to these weight values. It has been observed that the settlements with low slopes are the places that will suffer the most in case of possible flooding.
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