Assessment of Drought Risk Area in Thung Kula Rong Hai using Geographic Information System and Analytical Hierarchy Process.

Abstract

Thung Kula Rong Hai has encountered a drought that affects consumptive and agricultural life of local people. In finding some ways to prevent and monitor a potential drought, the researcher studied Thung Kula Rong Hai area by applying Analytical Hierarchy Process (AHP) to assess and identify drought risk areas. Five factors including Land use, Water body, Groundwater volume, Soil drainage, and Rainfall quantity were in this study. The results drought-prone areas in Thung Kula Rong Hai could be identified and categorized into four sub-areas high risk zone, medium risk zone, low risk zone, and insignificant risk zone. The main cause of drought is the uneven distribution of rainfall.