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Information basin is a watershed study , the important basis of the use and management , \is crucial. This paper analyzes the current the basin data model development overview , summary of today's data model development based on watershed systems analysis , summed up the basic elements constitute an important watershed , and major hydrological natural elements and the humanities to the number , including : river network, river network node , lakes ( reservoirs ) , hydrological monitoring stations, sub-basin outlet , basin , sub-basin , the catchment area , the data of land use types , river Administrative Region (SAR) data , agricultural and industrial sewage outfall space data , urban residential data , these elements are important and basic research of the basin . Using these data , in accordance with the the data organizational principle of the more avant-garde Archydro hydrological data model , the use of object-oriented the Geodatabase database processing techniques , constructed including data humanities and natural data data model and perfect model of the structure of the hydrological data for hydrological the simulation model provides an effective and reasonable form of watershed data organization ; same time , through research, to explore the feasibility of data processing and storage means for digitized watershed \, real-time , system simulation hydrological state of the environment as a basic research foreshadowing . Finally, Meijiang basin as research paradigms Meijiang watershed hydrology data and human data , build a the Meijiang watershed data model , data model using built express the relationship of of hydrological elements on downstream rivers Human Factor the spatial distribution of the natural elements of the river upstream and downstream data show that the expression of the shortest path of the river , the hydrological model and data model in the data call . Data model to facilitate the organization of watershed data for hydrological research provides an efficient data storage , processing , and expression of the way for easy data call .
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