STORMWATER QUALITY MODELLING IN COMBINED SEWERS: CALIBRATION AND UNCERTAINTY ANALYSIS

An hydrologic / hydrodynamic scheme based on the Bayesian theory and uses the Metropolis algorithm is proposed to estimate the accumulation, the erosion and the transport of pollutants on surface and in sewers. Model assessment method is developed and a case study in a Parisian urban 42 ha catchment is presented. The author concludes the predictive capacity of the tested mode is very low.