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@ARTICLE{Herrmann:8984,
author = {Herrmann, F. and Jahnke, C. and Jenn, F. and Kunkel, R. and
Voigt, H.-J. and Wendland, F.},
title = {{G}roundwater recharge rates for regional groundwater
modelling: a case study using {GROWA} in the {L}ower {R}hine
lignite mining area, {G}ermany},
journal = {Hydrogeology Journal},
volume = {17},
issn = {0941-2816},
address = {Berlin},
publisher = {Springer},
reportid = {PreJuSER-8984},
pages = {2049 - 2060},
year = {2009},
note = {The results presented here were obtained in the framework
of a collaborative project of Research Centre Julich, RWE
Power AG in Cologne and the Brandenburg University of
Technology in Cottbus. We sincerely thank all persons and
institutions who provided us with the extensive data. The
reviewers and editors of this article are also acknowledged
for good and constructive comments.},
abstract = {Groundwater recharge rates calculated with the GROWA model
have been applied as the recharge boundary condition for the
regional groundwater model Rurscholle. This model simulates
groundwater dynamics in the Pleistocene aquifers of the
Lower Rhine lignite mining area (Germany). GROWA uses an
area-differentiated approach to calculate recharge rates
depending on runoff-relevant site characteristics, which are
represented by a set of baseflow indices. The regional
accuracy of the coupled groundwater and GROWA models has
been checked using groundwater hydrographs as validation
criteria. The results suggest that the current (unadjusted)
version of GROWA underestimates the regional groundwater
recharge rate by 10-20 mm/yr. The comparative analysis
identified areas where recharge calculations could be
improved by adjusting the baseflow indices for areas where
runoff is dominated by slope, low water-logging and a low
degree of sealing. Using the adjusted set of baseflow
indices, the mean groundwater recharge rate of the
Rurscholle region was modelled as approx. 170 mm/yr. This
study highlights the benefit of using a coupled approach and
being able to independently calibrate and validate
groundwater recharge boundary conditions in regional
groundwater models.},
keywords = {J (WoSType)},
cin = {ICG-4},
ddc = {550},
cid = {I:(DE-Juel1)VDB793},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Geosciences, Multidisciplinary / Water Resources},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000271980400017},
doi = {10.1007/s10040-009-0493-4},
url = {https://juser.fz-juelich.de/record/8984},
}