Analysis of the Water Flow Direction in a Small Watershed Area of Northeast Thailand

Abstract

Analysed water flow direction in a small watershed area of Northeast by using of software computer program SURFER. The research site is similarly selected by using landscape and land-use as the representative watershed. The research area is the typically undulating landscape in order that results can be applied to other areas in the Northeast with similar landscape and land-use. The representative watershed focus on the Kummuang village, Khao Suan Kwang district, Khon Kaen province where far from the city around 40 km in North direction. Data collections are coordinate on small watershed and contour levels and then processed these data by using SURFER. The results of this study show the display in 3 dimensions model of representative watershed including to analyse and display in water flow direction model. This study will provide a more powerful resources for study on soil erosion and preventing them such as water flow diversion or cultivated ridge diversion.