How to realize the visualization and intelligence of the information management in levee projects is an important prerequisite for disaster prevention and mitigation, especially in China, in which exists ten thousands of kilometers levees with various types in seven major river basins. With the rapid development of Internet Technology, Geographic Information System(GIS) technology has been integrated with WebServices, which has significantly changed the operation mode of traditional GIS. And the so called WebGIS technology is playing a more and more important role in levee projects. In this paper, based on VS.NET and ArcGIS Server technology and combined with the database theory and key technologies of WebGIS, a novel WebGIS model following the MVC pattern was designed and a system called ‘China Levee Project Information Management System(CLPIMS)’ was developed. Specifically, the building of the WebGIS framework on the basis of the ArcGIS Server platform and the realization of its function were expounded; the application of distributed database and ASP.NET technology in GIS development was studied; the real-time data processing technique and the optimization methods to realize the seamless connection between GIS data in VS.NET and the remote database were investigated. Under B\S environment, the functions on real-time enquiry, display, statistics and management of spatial data can be easily realized using this particular system. Moreover, additional applications such as real-time monitoring, safety assessment, early warning and forecasting, and specialized analysis can be further explored through reserved interfaces. The proposed CLPIMS can serve not only as a scientific, systematic, visualized tool for analysis and decision management in levee projects in China, but also as a technical platform for flood control.