Discussion on constructing decision support systemfor hydrological information management in Guangdong province

Taking the decision support system for hydrological information management in Guangdong province as example, the paper puts forward the design idea and the flow of the system based on the data analysis and the using synthetically “3S” space information technology, discusses the building technique of the data analysis model and the database, and makes a brief analysis for the construction, the use effect and the characteristic of the decision support system for hydrological information management.