รายละเอียดผลงาน

The objective of this study was to develop and assess the Digital Elevation Model (DEM) of water flow direction used for flood forecasting and warning in Nakhon Si Thammarat Province. The method is to apply the data of topographic contours from the Royal Thai Survey Department in the areas of Klong Glai and Klong Ta Ton, in the districts of Tha Sala, Nopphitam, and Sichon. By using the D8 method with ArcGIS software. Model evaluation compared the direction of water flow overlay on DEM Cellular Automata method in Mathematica software and watershed delineation from Google Map. The research showed that the DEM of Klong Glai Watershed and Klong Ta Ton conform to the real water flow. The direction of water flow is in the same way. Drain marking can be specified when there is enough accumulation