A large database of continuous flow and turbidity measurements cumulating data on hundreds of rain events and a number of dry weather days from two sites in Paris (called "Quais" and "Clichy") and one in Lyon (called "Ecully") is presented. This database is used to characterize and compare the behaviour of the three sites at the level of inter- and intra-events. On an inter-event scale, the present analysis deals with total volumes, masses and concentrations during both wet and dry weather periods, and includes the contributions of sources of different origin to event volume and TSS load values. The results confirm previous findings regarding the spatial consistency of TSS fluxes and concentrations on sites in Paris with similar land uses. Moreover, masses and concentrations are correlated between the different sites and the correlation suggests that some deterministic processes are reproducible from one catchment to another for a particular rain event. The results also demonstrate the importance of the contribution of dry weather wastewater and deposits to the total event loads and show that such contributions are not specific to Paris sewer networks.