The Thai government developed the “Bang Rakam Model 60” to solve flood issues in low-lyingareas (Phitsanulok and Sukhothai Provinces). In the project, farmers will have to start planting in early April and harvest in July. This research proposes a methodology for assessing flood hazard using a fuzzy analytic hierarchy process (fuzzy AHP) relied on Chang’s extent analysis. It wasemployed to derive the weight for factor ranking and create a flood hazard map. Eight hazard factorsare considered in the methodology: average annual rainfall, drainage density, distance from drainagenetwork, soil water infiltration, land use, elevation, slope, and flow accumulation. The generated flood hazard maps were validated using the repeated flood area from Geo-Informatics and Space Technology Development Agency (GISTDA).ETC...
Keywords
Bang Rakam Model 60; Flood hazard assessment; Fuzzy Analytic Hierarchy Process; Geographic Information Systems