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Abstract:The ability how to predict concentration and pollution front progressing in receiving water resources is environmentally essential, especially adjacency to the water resources entrance. Hence, this study analyses the pollution progressive front and its rate of concentration affected by discharging nozzle with various convergence angles. In this research, the conduct of experiments schedule is based on geometrical and hydraulic variable effect. The main purpose of this study is to analyze the convergence angle of flow discharging nozzle. The results obtained, showed that the convergence angle of flow discharging nozzle increase from 15̊ to 90̊ degree has a remarkable impact on pollution front progressing increase. Data analysis showed that increase in dense fluid leads to 52 percent increase in concentration rate through the trajectory center line in comparison with initial concentration. Eventually, the jet flux center line concentration rate rises by 46 percent as convergence angle increases. Keywords: Progressive front of pollution, Superficial jet, convergence angle nozzle, Deep water, Final concentration of center line