Year: 2024
Type: article
Abstract: The objectives of our research were identifying and classifying flood risk areas into different classes in Thudawa area, Sri Lanka, and developing a geographical information system (GIS) model to identify flood vulnerability areas accurately in Thudawa area.It was expected to propose preventive guidelines of flood hazard vulnerability using geo-informatics.The methodological procedure is extremely important in this type of research thus, the spatial multi-criteria decision analysis (MCDA) procedure was used.For this research, analytical hierarchy process (AHP) was used for the criterion weighting.AHP calculations run upon the results of experts' judgment as proposed by the Satty incorporating pair-wise comparison method.The results of this study attempt to analyse the existing flash flood risk levels using the GIS-based multi-criteria analysis technique which allowed ranking of risk areas since it is important in the decision-making process to mitigate the flood risk in the study area.
Authors: M.W.R. Nuwanka, W.K.N.C. Withanage
Language: English
Subfield: Global and Planetary Change
Field: Environmental Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4391277832