CAI Yang, XIE Wenjun, CHENG Yilian, CHEN Deqing, CHEN Zidan, FU Jing

Abstract: There are many problems existing in building and application of water information system, such as dispersed data resources, inadequacy of information sharing, and difficult application collaboration. With the development of water resources informatization, more and more systems are building based on map application. National Water One Map system has been completed for all water management departments. It is based on a comprehensive system for information resource planning, unified support service and application system reconstruction. The key techniques developed include the water data modeling theory and methods based on full-relationship, system research and development for intensive sharing, and "One Map plus" business application system. The system regulates construction and application of geographic information, promotes data sharing and strengthens the coordination in water sector.

Keywords: Water One Map System; water data modeling; geographic information service; information updating mechanism; business application system