Modelling the Export and Interception of Rural and Urban Non-point Source Pollutants

The POLLUTE and GPT models, which have been formulated to simulate both the export of non-point source pollutants from rural and urban catchments and the interception and retention of polluted stormwater by WPCPs and GPTs, are reviewed. The calibration of these models for various catchments is also reported. The SWMM model is also increasingly being used to simulate the export of non-point source pollutants from urban catchments. This model is described and a recent application of the model is discussed. It is concluded that the successful implementation of stormwater control strategies is dependent on an ability to model the impacts of catchment developments on stormwater quality and to assess the performance of permanent stormwater control measures.