Linking the management of urban watersheds with the impacts on the receiving water bodies: the use of flow duration curves

Abstract : There is growing evidence that changes in the current hydrological behaviour of urbanizing catchments are a major source of impacts on the downstream water bodies. However, current flow-rates are rarely considered in studies on urban stormwater management, usually focused on extreme flow-rates. We argue that taking into account receiving water-bodies is possible with relatively small modifications in current practices of urban stormwater modelling, through the use of Flow-Duration Curves (FDCs). In this communication we discuss advantages and requirements of the use of FDCs. Then, we present an example of application comparing source control regulations over an urbanized catchment (178 ha) in Nantes, France.
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Guido Petrucci, Fabrice Rodriguez, José-Frédéric Deroubaix, Bruno Tassin. Linking the management of urban watersheds with the impacts on the receiving water bodies: the use of flow duration curves. 8ème Conférence internationale sur les techniques et stratégies durables pour la gestion des eaux urbaines par temps de pluie (Novatech 2013), Jun 2013, LYON, France. 10p. ⟨hal-01373914⟩

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