Abstract:Water resources quantity evaluation is one of the core and difficult contents in water resources bulletin and dynamic water resources evaluation. Traditional water resources evaluation is limited by time and space, which causes inflexible information collection and low work efficiency. To solve these problems, a water resources evaluation system is developed in Ningxia. The system adopts software layering mode, which includes data layer, logic layer and presentation layer. It contains relational database, file storage and cache system on the storage server, and installs applications, professional computing and GIS services on the application server. Based on essential data such as precipitation, runoff and groundwater of measuring station, the isoline can be drawn automatically, and the amounts of surface water and groundwater resources in each region can be computed automatically. Query and export of the calculation results, as well as statistics summary and export are supported. By making full use of modern information technology, the system realizes the functions of data collection, storage, statistical analysis and summary. This can improve the efficiency of evaluation and prepare for long-term dynamic evaluation in the future.