Research on three-dimensional water resources information system based on ArcGIS

3D (three-dimensional) GIS (Geographic Information System) technique provides a data processing and 3D scene displaying platform for hydropower project. This paper aims at developing a 3D water resources information system. On the base of contrast and analysis of current 3D GIS software, the GIS database was established and the techniques of COM (Component Object Model) and 3D visualization were implemented. The system breaks through the limitation of traditional two-dimensional display and is independent of the development environment and current GIS platform, which can quickly provide decision support for the flood regulation and water storage. The proposed method can be applied into other related fields, such as design, development and application of 3D.