Water environment capacity calculation of small and medium scale river in condition of scarce data——An case study in Nanhai,Foshan

This paper studied the water environment capacity calculation for small and medium scale rivers in Nanhai district,Foshan city under the condition of lack of monitoring data,complexity of river systems.The river branch's environment capacity and maximum allowable emission quantity for point source pollution were calculated with the comprehensive one-dimensional water environment capacity model,through reasonable assumption,data processing,model generalization and allowable emission estimation.Additionally,river basin pollution source analysis was taking into account to judge the water pollution problem,providing a basis for the establishment of the water pollution control plan.