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000008984 0247_ $$2DOI$$a10.1007/s10040-009-0493-4
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000008984 041__ $$aeng
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000008984 084__ $$2WoS$$aGeosciences, Multidisciplinary
000008984 084__ $$2WoS$$aWater Resources
000008984 1001_ $$0P:(DE-HGF)0$$aHerrmann, F.$$b0
000008984 245__ $$aGroundwater recharge rates for regional groundwater modelling: a case study using GROWA in the Lower Rhine lignite mining area, Germany
000008984 260__ $$aBerlin$$bSpringer$$c2009
000008984 300__ $$a2049 - 2060
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000008984 440_0 $$022081$$aHydrogeology Journal$$v17$$x0941-2816$$y8
000008984 500__ $$aThe results presented here were obtained in the framework of a collaborative project of Research Centre Julich, RWE Power AG in Cologne and the Brandenburg University of Technology in Cottbus. We sincerely thank all persons and institutions who provided us with the extensive data. The reviewers and editors of this article are also acknowledged for good and constructive comments.
000008984 520__ $$aGroundwater 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.
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000008984 65320 $$2Author$$aGroundwater recharge/water budget
000008984 65320 $$2Author$$aMining
000008984 65320 $$2Author$$aNumerical modeling
000008984 65320 $$2Author$$aGROWA
000008984 65320 $$2Author$$aGermany
000008984 7001_ $$0P:(DE-HGF)0$$aJahnke, C.$$b1
000008984 7001_ $$0P:(DE-HGF)0$$aJenn, F.$$b2
000008984 7001_ $$0P:(DE-Juel1)VDB4996$$aKunkel, R.$$b3$$uFZJ
000008984 7001_ $$0P:(DE-Juel1)VDB16001$$aVoigt, H.-J.$$b4$$uFZJ
000008984 7001_ $$0P:(DE-Juel1)VDB4997$$aWendland, F.$$b5$$uFZJ
000008984 773__ $$0PERI:(DE-600)1481470-5$$a10.1007/s10040-009-0493-4$$gVol. 17, p. 2049 - 2060$$p2049 - 2060$$q17<2049 - 2060$$tHydrogeology Journal$$v17$$x0941-2816$$y2009
000008984 8567_ $$uhttp://dx.doi.org/10.1007/s10040-009-0493-4
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