Title: Water displacement by sewer infrastructure in the Grote Nete catchment, Belgium, and its hydrological regime effects
Authors: Vrebos, Dirk ×
Vansteenkiste, Thomas
Staes, Jan
Willems, Patrick
Meire, Patrick #
Issue Date: 2013
Publisher: European Geophysical Society
Series Title: Hydrology and Earth System Sciences & Discussions vol:10 pages:7225-7467
Abstract: Urbanization and especially impervious areas, in combination with wastewater treatment infrastructure, can exert several pressures on the hydrological cycle. These pressures were studied for the Grote Nete catchment in Belgium (8.18% impervious area and 3.89% effective impervious area), based on a combination of empirical and modelbased approaches. The effective impervious area, combined with the extent of the wastewater collection regions which do not coincide with the natural catchment boundaries, was used as an indicator for the urbanization pressure. Our study revealed changes in the total upstream areas of the subcatchments between −16% and +3 %, and in upstream impervious areas between −99% and +64%. These changes lead to important inter-catchment water transfers. Based on simulations with a physically based and spatially-distributed hydrological catchment model, profound impacts of effective impervious area on infiltration and runoff were found. The model results show that the changes in impervious areas and related water displacements in and between 15 catchments due to the installation of the wastewater treatment infrastructure severely impacted low flows, peak flows and seasonal trends. They moreover show that it is difficult, but of utmost importance, to incorporate these pressures and artificial processes in an accurate way during the development of hydrological models for urbanized catchments.
ISSN: 1812-2108
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Hydraulics Section
× corresponding author
# (joint) last author

Files in This Item:
File Description Status SizeFormat
Vrebos-GroteNete (HESSD 2013).pdfpdf article Published 3561KbAdobe PDFView/Open


All items in Lirias are protected by copyright, with all rights reserved.