In order to achieve the effective management of water environment related to the hydraulic and water quality of the various surface water bodies such as streams, reservoirs, and estuaries, it is imperative to develop dynamic management system of surface water environment which can comprehensively analyze the dynamically varying characteristics of hydraulic and water quality of multidimensional water bodies. Thus, in this study, an integrated multidimensional management system of surface water environment has been developed through the combination of the three dimensional hydraulic model EFDC of EPA, water quality model WASP7, multidimensional finite element model for water quality MFEMWASP which was developed in the environment system research laboratory in Kangwon National University, and the geographical information system ArcGIS. Hydraulic and water quality theory, numerical method, input data, parameters, operation techniques have been analyzed. PC and Web GIS based modeling methods were derived for the development of the proposed system. By using the developed GIS system, the pre- and post-processing jobs were implemented such as input data preparation and visualization of the modeling results. The computational grids of the Paldang Lake were generated by using the automatic mesh generator of EFDC. PC and web based system has been developed by using the ArcGIS Desktop and Server, so that multiuser can use the system without the limit of space and time on the basis of PC and web. The system can be operation for the distributed system for the operation of the system such as data input, mobile system, and realtime operation.