Traditional lumped and conceptual hydrological models are appropriate for dealing with certain aspects of a major portion of current water resources management. However, more advanced tools are required for integrated water resources management. In this research, an integrated model to account for qualitative and quantitative stream-groundwater interactions is developed for application in large-scale, integrated, water resources management. One of the challenges in understanding the interactions between stream and groundwater systems lies in their different time scales. In this paper, the stream quantity model is developed and is embedded into groundwater quantity model using the couple method. Then the stream quality model and the groundwater quality model are integrated using an uncouple approach, with mesh generation to ensure stability of the numerical method. Confirmation of the coupled-uncoupled model was examined using analytical solution from previous studies.