Résumé
There is an increasing awareness of pollution problems in urban sewer management. This is the reason why, in France, a national experimental program on urban runoff pollution has been started (3). In the study reported in this paper, the data which have been collected for more than one year from the four experimental catchments (Maurepas and Les Ulis near Paris, Aix-Zup and Aix-Nord in Aix-en-Provence) have been used. We propose here to develop a modeling approach for the production-accumulation mechanisms and for the surface transport of TSS, BOD5 and COD. For TSS, we will summarize the main results and refer the reader to already published papers (5). Several rainfall-runoff pollution modeling objectives can be theoretically defined. Nevertheless, the nature and accuracy of the available data will set certain model limits, within the defined framework of the French experimental catchment program, monitoring was carried out at the outfalls of various watersheds. The raw data were based on several samples collected during rainfall events and thus sampling can be viewed as a spatially-varying phenomenon that can be characterized by a pollutant mean concentration value.