Publications

Journal articles and books (reviewed)

2021

• Binder, M., Hahnewald, A., Händel, F., Prommer, H., Engelmann, C., Burghardt, D., Stock, P., Tritschler, F., Liedl, R., Walther, M.: Single-rate dual-domain mass transfer model: Elucidating temperature effects. Water Resour. Res., 57(4), e2020WR029474,  https://doi.org/10.1029/2020WR029474, 2021

• Engelmann, C., Lari, K.S., Schmidt, L., Werth, C.J., Walther, M.: Towards predicting DNAPL source zone formation to improve plume assessment: Using robust laboratory and numerical experiments to evaluate the relevance of retention curve characteristics. Journal of Hazardous Materials, 407, 124741,  https://doi.org/10.1016/j.jhazmat.2020.124741, 2021

• Stock, P., Roder, S., Burghardt, D.: Further optimisation of the denitrifier method for the rapid ¹⁵N and ¹⁸O analysis of nitrate in natural water samples. Rapid Communications in Mass Spectrometry, 35(1), e8931,   https://doi.org/10.1002/rcm.8931, 2021
• Kalwa, F., Binder, M., Händel, F., Grüneberg, L., Liedl, R.: Biological and Physical Clogging in Infiltration Wells: Effects of Well Diameter and Gravel Pack. Groundwater, 59(6), 819–828,  https://doi.org/10.1111/gwat.13104, 2021
• Henao Casas, J.D., Kalwa, F., Walther, M., Rausch, R.: Stormwater harvesting in ephemeral streams: how to bypass clogging and unsaturated layers. Hydrogeology Journal, 29, 1813–1830,  https://doi.org/10.1007/s10040-021-02345-9, 2021
• Kavousi, A., Reimann, T., Wöhling, T., Birk, S., Luhmann, A.J., Kordilla, J., Noffz, T., Sauter, M., Liedl, R.: Joint-inversion of spring flow and transport signatures: a multi-purpose approach for characterization and forecast of a karst system. Earth and Space Science Open Archive, https://doi.org/10.1002/essoar.10505790.1, 2021

2020

• Klotzsch, S., Hamann, F. & Händel, F. Vorstellung und Test eines apparativ einfachen Messsystems für pneumatische Slug-Tests zur integralen Bestimmung der hydraulischen Leitfähigkeit. Grundwasser, 25, 301–311,  https://doi.org/10.1007/s00767-020-00458-8, 2020
• Birla, S., Yadav, P.K., Mahalawat, P., Händel, F., Chahar, B.R., Liedl, R.: Influence of recharge rates on steady-state plume lengths, Journal of Contaminant Hydrology, 235, 103709, https://doi.org/10.1016/j.jconhyd.2020.103709, 2020
• Stock, P., Roder, S., Burghardt, D.: Further optimization of the denitrifier method for the rapid ¹⁵N and ¹⁸O analysis of nitrate in natural water samples. Rap. Com. Mass Spec. 35(1), e8931,  https://doi.org/10.1002/rcm.8931, 2020
• Kavousi, A., Reimann, T., Liedl, R., Raeisi, E.: Karst aquifer characterization by inverse application of MODFLOW-2005 CFPv2 discrete-continuum flow and transport model. Journal of Hydrology, 587, 124922,  https://doi.org/10.1016/j.jhydrol.2020.124922, 2020
• Giese, M., Reimann, T., Liedl, R., Dewandel, B., Maréchal, J.C., Sauter, M.: An Approximation of Inner Boundary Conditions for Wells Intersecting Highly Conductive Structures. Groundwater, 58(4), 611-621,  https://doi.org/10.1111/gwat.12947, 2020

2019

• Binder, M., Tritschler, F., Burghardt, D., Klotzsch, S., Dietrich, P., Liedl, R., Händel, F.: Application of snowmelt as an active and inexpensive dual isotope groundwater tracer. Hydrogeol J, 27, 423–433,  https://doi.org/10.1007/s10040-018-01917-6, 2019
• Sullivan, T. P., Gao, Y., Reimann, T.: Nitrate Transport in a Karst Aquifer: Numerical Model Development and Source Evaluation. Journal of Hydrology, 573, 432-448,  https://doi.org/10.1016/j.jhydrol.2019.03.078, 2019
• Chang, Y., Wu, J., Jiang, G., Reimann, T., Sauter, M.: Modelling spring discharge and solute transport in conduits by coupling CFPv2 to an epikarst reservoir for a karst aquifer. Journal of Hydrology 569, 587-599, https://doi.org/10.1016/j.jhydrol.2018.11.075, 2019
• Stock, P., Hösch, A., Burghardt, D.: δ15N analysis of ammonium in freeze‐dried natural groundwater samples by precipitation with sodium tetraphenylborate. Rapid Communications in Mass Spectrometry, 33(22), 1730-1738,  https://doi.org/10.1002/rcm.8526, 2019
• Engelmann, C., Händel, F., Binder, M., Yadav, P.K., Dietrich, P., Liedl, R., Walther, M.: The fate of DNAPL contaminants in non-consolidated subsurface systems – Discussion on the relevance of effective source zone geometries for plume propagation. Journal of Hazardous Materials, 375, 233-240, https://doi.org/10.1016/j.jhazmat.2019.04.083, 2019
• Tritschler, F., Binder, M., Händel, F., Burghardt, D., Dietrich, P., Liedl, R.: Collected Rain Water as Cost-Efficient Source for Aquifer Tracer Testing. Groundwater, 58(1), 125-131, https://doi.org/10.1111/gwat.12898, 2019
• Binder, M., Burghardt, D., Engelmann, C., Tritschler, F., Simon, E., Prommer, H., Dietrich, P., Liedl, R., Händel, F.: Suitability of precipitation waters as semi-artificial groundwater tracers, Journal of Hydrology, 577, 123982,  https://doi.org/10.1016/j.jhydrol.2019.123982, 2019

• Händel, F., Fichtner, T., Graeber, P.-W.: Numerical and Laboratory Investigations of Closely-Spaced and Joint Infiltration of Precipitation and Treated Waste Water. Water 11, 2262. https://doi.org/10.3390/w11112262, 2019

• Ebeling, P., Händel, F., Walther, M.: Potential of mixed hydraulic barriers to remediate seawater intrusion. Science of The Total Environment, 693, 133478,  https://doi.org/10.1016/j.scitotenv.2019.07.284, 2019

• Engelmann, C., Schmidt, L., Werth, C.J., Walther, M.: Quantification of Uncertainties from Image Processing and Analysis in Laboratory-Scale DNAPL Release Studies Evaluated by Reflective Optical Imaging, Water, 11, 2274,  https://doi.org/10.3390/w11112274, 2019

• Stoeckl, L., Walther, M., Morgan, L.K.: Physical and Numerical Modelling of Post-Pumping Seawater Intrusion. Geofluids, 2019, 7191370, https://doi.org/10.1155/2019/7191370, 2019

• Schellhammer, S., Reimann, T., Walther, M., Grischek, T.: Lehren und Lernen: Bildung im Diskurs. Grundwasser - Zeitschrift der Fachsektion Hydrogeologie, 24, 175–176,  https://doi.org/10.1007/s00767-019-00425-y, 2019

• Vollberg, F., Walther, M., Gärdes, A., Moosdorf, N.: Modeling the Potential of Submarine Groundwater Discharge to Facilitate Growth of Vibrio cholerae Bacteria. Hydrology. 6(2), 39. https://doi.org/10.3390/hydrology6020039, 2019

• Jurado, A., Walther, M., Díaz-Cruz, M.S.: Occurrence, fate and environmental risk assessment of the organic microcontaminants included in the Watch Lists set by EU Decisions 2015/495 and 2018/840 in the groundwater of Spain. Science of the Total Environment, 663, 285-296,  https://doi.org/10.1016/j.scitotenv.2019.01.270, 2019

• Reimann, T., Liedl, R.  Schellhammer, K.S.: Using blended learning to redesign a groundwater management lecture series: benefits and outcome. Grundwasser, 24, 177–184, https://doi.org/10.1007/s00767-019-00424-z, 2019

2018

• Usman, M., Reimann, T., Liedl, R., Abbas, A., Conrad, C., Saleem, S: Inverse Parametrization of a Regional Groundwater Flow Model with the Aid of Modelling and GIS: Test and Application of Different Approaches. Isprs International Journal of Geo-Information 7(1), 22.  https://doi.org/10.3390/ijgi7010022, 2018

• Giese, M., Reimann, T., Bailly‐Comte, V., Maréchal, J.‐C., Sauter, M., & Geyer, T.: Turbulent and laminar flow in karst conduits under unsteady flow conditions: Interpretation of pumping tests by discrete conduit‐continuum modeling. Water Resources Research, 54, 1918–1933,  https://doi.org/10.1002/2017WR020658, 2018

• Händel, F., Engelmann, C., Klotzsch, S., Fichtner, T., Binder, M., Graeber, P-W.: Evaluation of Decentralized, Closely-Spaced Precipitation Water and Treated Wastewater Infiltration. Water, 10(10), 1460. https://doi.org/10.3390/w10101460, 2018

2017

• Giese, M., Reimann, T., Liedl, R., Maréchal, J.-C., Sauter, M.: Application of the flow dimension concept for numerical drawdown data analyses in mixed-flow karst systems. Hydrogeol J. 25, 799-811, https://doi.org/10.1007/s10040-016-1523-7, 2017

• Klotzsch, S., Binder, M., Händel, F.: Abschätzung des Einflusses von Parameterunsicherheiten bei der Planung und Auswertung von Tracertests unter Verwendung von Ensembleprognosen. Grundwasser, 22(2), 1-8, https://doi.org/10.1007/s00767-017-0357-0, 2017

2016

• Liu, G., Knobbe, S., Reboulet, E. C., Whittemore, D. O., Händel, F., Butler Jr., J. J.: Field Investigation of a New Recharge Approach for ASR Projects in Near-Surface Aquifers, Ground Water, 54(3), 425-33, https://doi.org/10.1111/gwat.12363, 2016
• Klotzsch, S., Binder, M., Händel, F.: A Straightforward Random Walk Model for Fast Push-Pull Tracer Test Evaluation. Groundwater, 55(1), 129-135, https://doi.org/10.1111/gwat.12438, 2016
• Händel, F., Binder, M., Dietze, M., Dietze, M., Liedl, R., Dietrich, P.: Experimental recharge by small-diameter wells: the Pirna, Saxony, case study. Environmental Earth Sciences, 75, 930, https://doi.org/10.1007/s12665-016-5701-7, 2016
• Händel, F., Liu, G., Fank, J., Friedl, F., Liedl, R., Dietrich, P.: Assessment of small-diameter shallow wells for managed aquifer recharge at a site in southern Styria, Austria. Hydrogeol J, 24, 2079–2091, https://doi.org/10.1007/s10040-016-1442-7, 2016

2015

• Vienken, T., Händel, F., Epting, J., Dietrich, P., Liedl, R., Huggenberger, P.: Energiewende braucht Wärmewende - Chancen und Limitierungen der intensiven thermischen Nutzung des oberflächennahen Untergrundes in urbanen Gebieten vor dem Hintergrund der aktuellen Energiedebatte in Deutschland, Kommentar in Grundwasser. 21, 69–73, https://doi.org/10.1007/s00767-015-0303-y, 2015
• Siergieiev, D., Ehlert, L., Reimann, T., Lundberg, A., and Liedl, R.: Modelling hyporheic processes for regulated rivers under transient hydrological and hydrogeological conditions, Hydrol. Earth Syst. Sci., 19(1), 329-340, https://doi.org/10.5194/hess-19-329-2015, 2015
• Köhler, M., Händel, F., Epting, J., Binder, M., Mueller, M.H., Huggenberger, P., Liedl, R.: Numerical Evaluation and Optimization of Depth-oriented Temperature Measurement for the Investigation of Thermal Influences on Groundwater Resources. Energy Procedia, 76, 371-380, https://doi.org/10.1016/j.egypro.2015.07.844, 2015

2014

• Händel, F., Liu, G., Dietrich, P., Liedl, R., Butler Jr., J.: Numerical assessment of ASR recharge using small-diameter wells and surface basins, J. Hydrol., 517, 54-63, https://doi.org/10.1016/j.jhydrol.2014.05.003, 2014
• Reimann, T., Giese, M., Geyer, T., Liedl, R., Maréchal, J.C., and Shoemaker, W.B.: Representation of water abstraction from a karst conduit with numerical discrete-continuum models, Hydrol. Earth Syst. Sci., 18, 227-241, https://doi.org/10.5194/hess-18-227-2014, 2014

2013

• Händel, F., Liedl, R., Fank, J., Rock, G.: Regional modeling of geothermal energy systems in shallow aquifers: the Leibnitzer Feld case study (Austria), Environmental Earth Sciences, 70(8), 3433-3446,  http://dx.doi.org/10.1007/s12665-013-2469-x, 2013
• Epting, J., Händel, F., Huggenberger, P.: Thermal management of an unconsolidated shallow urban groundwater body, Hydrol. Earth Syst. Sci., 17, 1851-1869,  https://doi.org/10.5194/hess-17-1851-2013, 2013
• Geyer, T., Birk, S., Reimann, T., Dörfliger, N., Sauter, M.: Differentiated characterization of karst aquifers: some contributions. Carbonates and Evaporites, 28, 41-46, http://dx.doi.org/10.1007/s13146-013-0150-9, 2013

2012

• Walther, M., Böttcher, N., Liedl, R.: A 3D interpolation algorithm for layered tilted geological formations using an adapted inverse distance weighting approach, pp. 119-126, in ModelCare 2011: Models Repositories of Knowledge, IAHS Publ. 355 (2012) ISBN 978-1-907161-34-6, 374, 2012
• Händel, F., Dietrich, P.: Relevance of deterministic structures for modeling of transport: the Lauswiesen case study, Ground Water, 50(6): 935-942.  https://doi.org/10.1111/j.1745-6584.2012.00948.x, 2012
• Kalbacher, T., Delfs, J.O., Shao, H., Wang, W., Walther, M., Samaniego, L., Schneider, C., Musolff, A., Centler, F., Sun, F., Hildebrandt, A., Liedl, R., Borchardt, D., Krebs, P., Kolditz, O.: The IWAS-ToolBox: software coupling for an integrated water resources management, Environ. Earth Sci. 65 (5), pp 1367-1380,  https://doi.org/10.1007/s12665-011-1270-y, 2012
• Kordilla, J., Sauter, M., Reimann, T., and Geyer, T.: Simulation of saturated and unsaturated flow in karst systems at catchment scale using a double continuum approach, Hydrol. Earth Syst. Sci., 16, 3909-3923,  https://doi.org/10.5194/hess-16-3909-2012, 2012
• O. Kolditz, S. Bauer, L. Bilke, N. Böttcher, J.O. Delfs, T. Fischer, U.J. Görke, T. Kalbacher, G. Kosakowski, C.I. McDermott, C.H. Park, F. Radu, K. Rink, H. Shao, H.B. Shao, F. Sun, Y.Y. Sun, A.K. Singh, J. Taron, M. Walther, W. Wang, N. Watanabe, Y. Wu, M. Xie, B. Zehner: Technical Paper OpenGeoSys: An open source initiative for numerical simulation of thermo-hydro-mechanical/chemical (THM/C) processes in porous media, Environmental Earth Sciences, 67(2), 589-599,  https://doi.org/10.1007/s12665-012-1546-x, 2012
• M. Walther, J.-O. Delfs, J. Grundmann, O. Kolditz, R. Liedl, Saltwater intrusion modeling: Verification and application to an agricultural coastal arid region in Oman, Journal of Computational and Applied Mathematics, 236(18), 4798-4809, https://doi.org/10.1016/j.cam.2012.02.008, 2012
• Yadav, P. K., Händel, F., Müller, C., Liedl, R., Dietrich, P.: NAFLA – Ein Simulationswerkzeug zur analytischen Abschätzung von Schadstofffahnenlängen, Grundwasser, 18, 47-53,  https://doi.org/10.1007/s00767-012-0209-x, 2012
• Jakovovic, D., Post, V.E.A., Werner, A.D., Männicke, O., Hutson, J.L., Simmons, C.T.: Tracer adsorption in sand-tank experiments of saltwater up-coning, Journal of Hydrology,  414–415, 476-481, https://doi.org/10.1016/j.jhydrol.2011.11.024, 2012

2011

• Dietze, M. and Dietrich, P.: Evaluation of Vertical Variations in Hydraulic Conductivity in Unconsolidated Sediments, Groundwater, 50(3), 450-456.  https://doi.org/10.1111/j.1745-6584.2011.00854.x, 2011
• Dietze, M. and Dietrich, P.: A field comparison of BTEX mass flow rates based on integral pumping tests and point scale measurements. Journal of Contaminant Hydrology, 122(1-4), 1-15, https://doi.org/10.1016/j.jconhyd.2010.10.001, 2011
• Reimann, T., T. Geyer, W. B. Shoemaker, R. Liedl, and M. Sauter.: Effects of dynamically variable saturation and matrix-conduit coupling of flow in karst aquifers, Water Resources Research, 47, W11503,  https://doi.org/10.1029/2011WR010446, 2011
• Reimann, T., C. Rehrl, W. B. Shoemaker, T. Geyer, and S. Birk: The significance of turbulent flow representation in single-continuum models, Water Resources Research, 47, W09503,  https://doi.org/10.1029/2010WR010133, 2011
• Reimann, T., Birk, S., Rehrl, C., and Shoemaker, W. B.: Modifications to the Conduit Flow Process Mode 2 for MODFLOW-2005. Ground Water, 50(1), 144-148,  https://doi.org/10.1111/j.1745-6584.2011.00805.x, 2011

2010

• Philipp, A., Schmitz, G.H., Liedl, R.: An analytical model of surge flow in non-prismatic permeable channels and its application in arid regions. J. Hydraul. Engng. 136(5), 290-298,  https://doi.org/10.1061/(ASCE)HY.1943-7900.0000172, 2010
• Walther M., Fank J., Reimann T.: Tiefengestaffeltes Wasserprobenahmesystem zur spezifischen Beprobung der ungesättigten Zone, dem Kapillarsaum und der gesättigten Zone. Grundwasser 15(1), 19-31, https://doi.org/10.1007/s00767-009-0129-6, 2010

2009

• Heinz B., Birk S., Liedl R., Geyer T., Straub K. L., Andresen J., Bester K., Kappler A.: Water quality deterioration at a karst spring (Gallusquelle, Germany) due to combined sewer overflow: Evidence of bacterial and micro-pollutant contamination. Environmental Geology, 57(4), 797-808,  https://doi.org/10.1007/s00254-008-1359-0, 2009
• Beyer C., Konrad W., Rügner H., Bauer S., Liedl R., Grathwohl P.: Model-based prediction of long-term leaching from secondary materials in road constructions and noise protection dams, Waste Management 29(2), 839-850,  https://doi.org/10.1016/j.wasman.2008.06.025, 2009
• Reimann T.: MODFLOW-2005 CFP – Ein Hybridmodell für Karstgrundwasserleiter. Grundwasser, 14(2) 139-145, https://doi.org/10.1007/s00767-009-0102-4, 2009
• Reimann, T., Hill, M.E.: MODFLOW CFP: A new Conduit Flow Process for MODFLOW-2005. Groundwater, 47(3), 321-325, https://doi.org/10.1111/j.1745-6584.2009.00561.x, 2019

2008

• Konrad C., Walther W., Reimann T., Rogge A., Stengel P., Well R.: Vergleich von hydraulischen und chemischen Sedimenteigenschaften aus Spül- und Kernbohrungen im Raum Peine (Norddeutschland). Grundwasser, 13(1), 42-49,  https://doi.org/10.1007/s00767-007-0055-4, 2008
• Geyer T., Birk S., Liedl R., Sauter M.: Quantification of temporal distribution of recharge in karst systems from spring hydrographs. Journal of Hydrology, 348(3-4), 452-463,  https://doi.org/10.1016/j.jhydrol.2007.10.015, 2008

2007

• Brauchler R., Cheng J.-T., Dietrich P., Everett M., Johnson B., Liedl R.,Sauter M.: An inversion strategy for hydraulic tomography: Coupling travel time and amplitude inversion. Journal of Hydrology, 345(3-4), 184-198,  https://doi.org/10.1016/j.jhydrol.2007.08.011, 2007
• Brauchler R., Sauter M., McDermott C. I., Leven C., Weede M., Dietrich P., Liedl R., Hötzl H., Teutsch G.: Characterization of fractured porous media: Aquifer analogue approach, in: Krasny J., Sharp J. M. (eds.), Groundwater in fractured rocks, IAH-Selected Paper Series 9, 375-392, 2007
• Beyer C., Konrad W., Park C. H., Bauer S., Grathwohl P., Rügner H., Liedl R.: Modellbasierte Sickerwasserprognose für die Verwertung von Recycling-Baustoff in technischen Bauwerken. Grundwasser 12(2), 94-107, https://doi.org/10.1007/s00767-007-0025-x, 2007
• Geyer T., Birk S., Licha T., Liedl R., Sauter M.: Multitracer test approach to characterize reactive transport in karst aquifers. Groundwater 45(1), 36-45,  https://doi.org/10.1111/j.1745-6584.2006.00261.x, 2007
• Pätsch M., Walther W., Reimann Th., Pennig M.: Umsatz von Stickstoff im Grundwasserleiter eines Wasserwerkes – Berücksichtigung bei der Modellierung des Transportes. Wasserwirtschaft, 97(5), 33-38, 2007

2006

• Birk S., Liedl R., Sauter M.: Karst spring responses examined by process-based modeling. Groundwater 44(6), 832-836,  https://doi.org/10.1111/j.1745-6584.2006.00175.x, 2006
• Heinz B., Birk S., Liedl R., Geyer T., Straub K. L., Bester K., Kappler A.: Vulnerability of a karst spring to wastewater inflitration (Gallusquelle, Southwest Germany), Austrian Journal of Earth Sciences, 99, 11-17, https://doi.org/10.1007/s00254-008-1359-0, 2006
• Baraka-Lokmane S., Liedl R.: From Micro to Meso: an exercise in determining hydraulic conductivity of fractured sandstone cores from detailed characterization of the fractures. Geophysical Journal International, 166, 1440-1453, https://doi.org/10.1111/j.1365-246X.2006.03064.x, 2006
• Mak K., Griebler C., Meckenstock R. U., Liedl R., Peter A.: Combined application of conservative transport modelling and compound-specific carbon isotope analyses to assess in-situ attenuation of benzene, toluene, and o-xylene. Journal of Contaminant Hydrology, 88, 306-320,  https://doi.org/10.1016/j.jconhyd.2006.07.008, 2006
• Montoya J. C., Costa J. L., Liedl R., Bedmar F., Daniel P.: Effects of soil type and tillage practice on atrazine transport through intact soil cores. Geoderma 137(1-2), 161-173,  https://doi.org/10.1016/j.geoderma.2006.08.007, 2006
• Wöhling T., Fröhner A., Schmitz G. H., Liedl R.: Efficient solution of the coupled one-dimensional surface–two-dimensional subsurface flow during furrow irrigation advance. Journal of Irrigation and Drainage Engineering, 132(4), https://doi.org/10.1061/(ASCE)0733-9437(2006)132:4(380), 2006
• Walther W., Reimann T.: Modelltechnik zur Sickerwasserprognose, eine Übersicht und Zusammenfassung. In: Materialien zur Sickerwasserprognose, published by the AG „Sickerwasser und Stofftransport“ im Deutschen Verband für Wasserwirtschaft, Abwasser und Abfall, August 2006. ISBN13: 978-3-939057-08-6
• Bayer-Raich M., Jarsjö J., Liedl R., Ptak T., Teutsch G.: Integral pumping test analyses of linearly sorbed groundwater contaminants using multiple wells: Inferring mass flows and natural attenuation rates, Water Resour. Res. 42(8), W08411, https://doi.org/10.1029/2005WR004244, 2006
• Massmann C., Birk S., Liedl R., Geyer T.: Identification of hydrological models: Application to tracer test analysis in a karst aquifer, in: Bierkens M. F. P., Gehrels J. C., Kovar K. (eds.), Calibration and reliability in groundwater modelling: From uncertainty to decision making, IAHS Publ. 304, 59-64, 2006

2005

• Marre D., Walther W., Ullrich K.: Einfluss des Hochwassers 2002 auf die Grundwasser-Beschaffenheit in Dresden. Grundwasser 10(3), 146-156, https://doi.org/10.1007/s00767-005-0091-x, 2005

2001

• Reinstorf F., Susset B., Marre D., Grathwohl P., Walther, W.: Modelle zur Sickerwasserprognose. Bodenschutz 1/01, ISSN 1432-170x, 2001

1997

• Dehnert J., Nestler W., Freyer K., Treutler H.-C., Neitzel P., Walther W.: Radon-222 - ein neuer Leitkennwert zur Bestimmung optimaler Abpumpzeiten von Grundwassermeßstellen. Grundwasser - Zeitschrift der Fachsektion Hydrogeologie 1/1997