Author(s): Yoann Cartier; Arthur Guillot-Le Goff; David Metivier; Brigitte Vincon-Leite; Sebastien Boyaval; Remi Carmigniani
Linked Author(s):
Keywords: Water quality; river; inverse modeling; combined sewer overflow
Abstract: Rivers provide many ecosystem services. However, in densely populated urban areas, they are contaminated by multiple sources including combined sewer overflows (CSOs) during heavy rainfall. Using high-frequency water quality measurements in the Seine River within Paris, it is possible to determine the quantity of contaminants released by individual CSOs. To achieve this goal, a 1D river model has been validated to represent the actual transport of bacteria in rivers. Furthermore, feasibility of an inverse method, to retrieve the consequence (bacterial concentration in river) from the cause (CSO discharge), has been established. Such a methodology would allow to distinguish most contributing contamination sources to guide decision-making for mitigation.
Year: 2026