Modelling of surface water – groundwater interaction on the Alzette river basin in Luxembourg

F. Fenicia, G.P. Zhang, T.H.M. Rientjes, P. Reggiani, L. Pfister, H.H.G. Savenije

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Abstract

Detailed field measurements of water table levels and river stages operated on the Alzette river basin in Luxembourg have pointed out that the runoff response of the catchment due to rainfall is strongly dependent on the groundwater level behaviour and consequently on the water storage of the catchment. This is due to the soil structure and geology of the area, which allow the formation of fast preferential flow that quickly reaches the aquifer and rapidly increases the near-stream saturated area.
In order to simulate such situation an integrated approach that allows the simulation
of coupled groundwater and surface water flows is necessary; for this purpose the
‘Representative ElementaryWatershed’ (REW) model is selected. The model considers the total watershed area as subdivided in a number of sub-watersheds according to the Strahler stream order system. Each sub-watershed is considered as a spatial
unit, and is divided in various zones according to the different physical processes observed. Only averaged quantities are considered within each zone, and mass exchange processes are evaluated between the various zones and the various sub-watersheds. In particular the mass exchange between the saturated zone and the channel reaches is simulated, allowing an interaction between groundwater and surface water. Calibration of the model is performed by means of piezographic measures as well as channel flow data available from the Centre de Recherche Public Gabriel Lippmann (CRP-GL) of Luxembourg.
Original languageEnglish
Title of host publicationNCR-days 2003
Subtitle of host publicationDealing with Floods within Constraints, November 6 – 8
EditorsN.S.M. Douben, A.G. van Os
Place of PublicationDelft, The Netherlands
PublisherNCR
Pages12-14
Publication statusPublished - 2003
EventNCR-days 2003: Dealing with Floods within Constraints - Resort Marina Oolderhuuske, Roermond, Netherlands
Duration: 6 Nov 20038 Nov 2003

Publication series

NameNCR publication
PublisherNetherlands Centre for River Studies
Volume24-2004
ISSN (Print)1568-234X

Conference

ConferenceNCR-days 2003
Country/TerritoryNetherlands
CityRoermond
Period6/11/038/11/03

Keywords

  • ADLIB-ART-1085
  • WRS

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