... calibrating, making scenarios and finally bring out predictions as well as recommendations [7, 8]. Preliminary assessment and simulation of the water quality of VNU. Journal of Science, Nat., Sci., ... contribute and improving the water quality model for Cau River, we carried out the research: “Preliminary assessment and simulation of the water quality of Cau River, Bac Ninh province by mathematical ... VNU. JOURNAL OF SCIENCE, nat., Sci., & Tech., T.xxI, N02, 2005 5 PRELIMINARY ASSESSMENT AND SIMULATION OF THE WATER QUALITY OF CAU RIVER, BAC NINH PROVINCE BY MATHEMATICAL MODEL...