The treatment and hydrology simulation analysis of digital elevation model(DEM) were discussed using ArcGIS software and its Arc Hydro Tools extension with an example of the Shuangyang River watershed.

• 运用GIS软件ArcGIS、Arc Hydro Tools扩展模块,以双阳河流域为例,探讨了数字高程模型(DEM)的处理及其水文模拟分析。