The objective of this study is to analyze the flood risk in the area's sinkhole Sao Hai District, Nakhon Ratchasima province. Using geographic information systemUsing the tools of GIS analysis and overlay data and making questionnaires AHP to expert weight value in each factor. Factors affecting the sinkhole. There are 4 factors including salt caverns underground.The depth of the salt from the soil surface, the geology, the risk is 3 level. Including the risk of going high, medium and low, and compared with the data from the field survey, the sinkhole in the area of Sao Hai district.The results can be used as data in the management of risk area sinkhole in the area to study
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