%0 Journal Article %T Deterministic modelling of the cumulative impacts of underground structures on urban groundwater flow and the definition of a potential state of urban groundwater flow: example of Lyon, France %+ Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA) %+ Centre d'études et d'expertise sur les risques, l'environnement, la mobilité et l'aménagement (CEREMA) %+ Laboratoire d'étude des transferts en hydrologie et environnement (LTHE) %A Attard, Guillaume %A Rossier, Yvan %A Winiarski, Thierry %A Cuvillier, Loann %A Eisenlohr, Laurent %< avec comité de lecture %@ 1431-2174 %J Hydrogeology Journal %I Springer Verlag %V 24 %P 1213–1229 %8 2016 %D 2016 %R 10.1007/s10040-016-1385-z %K Urban groundwater . Groundwater management . Deterministic modeling . Underground constructions . France %Z Environmental Sciences/Biodiversity and EcologyJournal articles %X Underground structures have been shown to have a great influence on subsoil resources in urban aquifers. A methodology to assess the actual and the potential state of the groundwater flow in an urban area is proposed. The study develops a three-dimensional modeling approach to understand the cumulative impacts of underground infrastructures on urban groundwater flow, using a case in the city of Lyon (France). All known underground structures were integrated in the numerical model. Several simulations were run: the actual state of groundwater flow, the potential state of ground- water flow (without underground structures), an intermediate state (without impervious structures), and a transient simulation of the actual state of groundwater flow. The results show that underground structures fragment groundwater flow systems leading to a modification of the aquifer regime. For the case studied, the flow systems are shown to be stable over time with a transient simulation. Structures with drainage sys- tems are shown to have a major impact on flow systems. The barrier effect of impervious structures was negligible because of the small hydraulic gradient of the area. The study demon- strates that the definition of a potential urban groundwater flow and the depiction of urban flow systems, which involves understanding the impact of underground structures, are im- portant issues with respect to urban underground planning. %G English %L hal-01369493 %U https://sde.hal.science/hal-01369493 %~ SDE %~ INSU %~ UNIV-SAVOIE %~ UGA %~ CNRS %~ UNIV-LYON1 %~ ENTPE %~ INPG %~ IRSTEA %~ OSUG %~ LTHE %~ GIP-BE %~ BIOENVIS %~ AGREENIUM %~ CEREMA %~ LABEXIMU %~ UDL %~ UNIV-LYON %~ INRAE %~ UGA-COMUE %~ USMB-COMUE %~ LEHNA