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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Volume 10, issue 6
Hydrol. Earth Syst. Sci., 10, 937–955, 2006
https://doi.org/10.5194/hess-10-937-2006
© Author(s) 2006. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

Special issue: Towards a new generation of hydrological process models for...

Hydrol. Earth Syst. Sci., 10, 937–955, 2006
https://doi.org/10.5194/hess-10-937-2006
© Author(s) 2006. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  07 Dec 2006

07 Dec 2006

Modelling subsurface storm flow with the Representative Elementary Watershed (REW) approach: application to the Alzette River Basin

G. P. Zhang1,*, H. H. G. Savenije1, F. Fenicia1,2, and L. Pfister2 G. P. Zhang et al.
  • 1Water Resources Section, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands
  • 2Centre de Recherche Public – Gabriel Lippmann, Luxembourg, Grand-duchy of Luxembourg
  • *also at: Environment and Transportation, DHV B.V., Amersfoort, The Netherlands

Abstract. A new domain, the macropore domain describing subsurface storm flow, has been introduced to the Representative Elementary Watershed (REW) approach. The mass balance equations have been reformulated and the closure relations associated with subsurface storm flow have been developed. The model code, REWASH, has been revised accordingly. With the revised REWASH, a rainfall-runoff model has been built for the Hesperange catchment, a sub-catchment of the Alzette River Basin. This meso-scale catchment is characterised by fast catchment response to precipitation, and subsurface storm flow is one of the dominant runoff generation processes. The model has been evaluated by a multi-criteria approach using both discharge and groundwater table data measured at various locations in the study site. It is demonstrated that subsurface storm flow contributes considerably to stream flow in the study area. Simulation results show that discharges measured along the main river course are well simulated and groundwater dynamics is well captured, suggesting that the model is a useful tool for catchment-scale hydrological analysis.

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