Prof. Dr. Jan Fleckenstein (Ph.D.)


Prof. Dr. Jan H. Fleckenstein, (Ph.D.)
Head of Department

Department of Hydrogeology
Helmholtz-Center for
Environmental Research - UFZ
Permoserstr. 15
04318 Leipzig, Germany

Tel: +49 341 235 1207
Fax: +49 341 235 451207

Persönliche Bild

Curriculum Vitae

since 2017

since 2010

Professor for Hydrologic Modeling, University of Bayreuth

Head of the Department of Hydrogeology, Helmholtz Center for Environmental Research (UFZ), Leipzig


"Habilitation" in Hydrology, University of Bayreuth


Assistant Professor (C1) at the Department of Hydrology, University of Bayreuth


Ph.D. in Hydrologic Sciences, Department of Land, Air and Water Resources, University of California, Davis


M.Sc. in Hydrology, Department of Land, Air and Water Resources, University of California, Davis


Graduate Student at the Department of Land, Air and Water Resources, University of California, Davis

03-07 1997

Researcher in the hydrologic modeling group at Potsdam Institute for Climate Impact Research (PIK)


Diplom (M.Sc.) in Geosciences, Free University of Berlin

Research interests

  • Groundwater-surface water interactions
  • Simulation of coupled GW-SW systems
  • Heat as a natural tracer
  • Water and solute dynamics in catchments
  • Interplay between hydrologic dynamics and biogeochemical processes

Cooperations within larger research consortia

finished projects

Publications (ISI-listed)

Yang, J., Heidbuechel, I., Musolff, A., Reinstorf, F., Fleckenstein, J.H. (2018) Exploring the Dynamics of Transit Times and Subsurface Mixing in a Small Agricultural Catchment, Water Resources Research, 54,

Michelle E. Newcomer, M.E., Hubbard, S.S., Fleckenstein, J.H., Maier, U., Schmidt, C., Thullner, M., Ulrich, C., Flipo, N., Rubin, Y. (2018) Influence of hydrological perturbations and riverbed sediment characteristics on hyporheic zone respiration of CO2 and N2, Journal of Geophysical Research – Biogeosciences, 123,

Mahmood, M.N., Schmidt, C., Fleckenstein, J.H., Trauth, N. (2018) Modeling the impact of stream discharge events on riparian solute dynamics, Groundwater,

Trauth, N., Musolff, A., Knöller, K., Kaden, U.S., Keller, T., Werban, U., Fleckenstein, J.H., (2018) River water infiltration enhances denitrification efficiency in riparian groundwater, Water Research, 130:185 - 199

Dupas, R., Musolff, A., Jawitz, J.W., Rao, P. S. C., Jäger, C.G., Fleckenstein, J.H., Rode, M., Borchardt, D., (2017) Carbon and nutrient export regimes from headwater catchments to downstream reaches, Biogeosciences 14 (18), 4391 - 4407

Brandt, T., Vieweg, M., Laube, G., Schima, R., Goblirsch, T., Fleckenstein, J.H., Schmidt, C. (2017) Automated in situ oxygen profiling at aquatic-terrestrial interfaces, Environmental Science and Technology, 51 (17):9970-9978.

Krause, S., Lewandowski, J., Grimm, N.B., Hannah, D.M. Pinay, G., McDonald, K.M., Marti, E.Argerich, A., Pfister, L., Klaus, J. Battin, T. Larned, S.T., Schelker, J. Fleckenstein J.H., Schmidt, C., Rivett, M.O. Watts, G., Sabater, F. Sorolla, A., Turk, V. (2017), Ecohydrological interfaces as hot spots of ecosystem processes, Water Resources Research, 53(8):6359-6376

Musolff A., Selle B., Büttner O., Opitz M., Knorr K.H., Fleckenstein J.H., Reemtsma T., Tittel J. (2017) Does iron reduction control the release of dissolved organic carbon and phosphate at catchment scales? - Need for a joint research effort, Global Change Biology, doi: 10.1111/gcb.13758.

Musolff A., Fleckenstein J.H., Rao P.S.C., Jawitz J.W. (2017), Emergent archetype patterns of coupled hydrologic and biogeochemical responses in catchments, Geophysical Research Letters, 44, doi:10.1002/2017GL072630.

Kurz, M.J., Drummond, J.D., Martí, E., Zarnetske, J.P., Lee-Cullin, J., Klaar, M.J., Folegot, S., Keller, T., Ward, A.S., Fleckenstein, J.H., Datry, T., Hannah, D.M., Krause, S. (2017) Impacts of water level on metabolism and transient storage in vegetated lowland rivers: Insights from a mesocosm study, Journal of Geophysical Research, Biogeosciences, 122 (3):628 – 644.

Trauth N. and Fleckenstein J.H. (2017) Single discharge events increase reactive efficiency of the hyporheic zone, Water Resources Research, 53:779-798.

Wollschläger, U., Attinger, S., Borchardt, D., Brauns, M., Cuntz, M., Dietrich, P., Fleckenstein, J.H., Friese, K., Friesen, J., Harpke, A., Hildebrandt, A., Jäckel, G., Kamjunke, N., Knöller, K., Kögler, S., Kolditz, O., Krieg, R., Kumar, R., Lausch, A., Liess, M., Marx, A., Merz, R., Mueller, C., Musolff, A., Norf, H., Oswald, S.E., Rebmann, C., Reinstorf, F., Rode, M., Rink, K., Rinke, K., Samaniego, L., Vieweg, M., Vogel, H.-J., Weitere, M., Werban, U., Zink, M., Zacharias, S. (2017) The Bode hydrological observatory: a platform for integrated, interdisciplinary hydro-ecological research within the TERENO Harz/Central German Lowland Observatory, Environmental Earth Sciences,. 76 (1), art. 29.

Fox A., Laube G., Schmidt C., Fleckenstein J.H., Arnon S. (2016) The effect of losing and gaining flow conditions on hyporheic exchange in heterogeneous streambeds, Water Resources Research, 52 (9), 7460 - 7477

Vieweg M., Kurz M.J.,Trauth N., Fleckenstein J.H., Musolff A., Schmidt C. (2016) Estimating time-variable aerobic respiration in the streambed by combining electrical conductivity and dissolved oxygen time-series, Journal of Geophysical Research, Biogeosciences, 121(8):2199-2215

Musolff A. Schmidt C., Rode M., Weise S., Fleckenstein J.H. (2016) Groundwater head controls nitrate export from an agricultural lowland catchment, Advances in Water Resources, 96: 75-107.

Schmadel N. M., Ward A. S., Kurz M. J., Fleckenstein J. H., Zarnetske J. P. Hannah D. M., Blume T., Vieweg M., Blaen P. J., Schmidt C., Knapp J.L.A., Klaar M. J., Romeijn P., Datry T., Keller T., Folegot S., Marruedo Arricibita A. I. and Krause S. (2016) Stream solute tracer time scales changing with discharge and reach length confound process interpretation, Water Resources Research, 52(4):3227-3245

Newcomer M. E., Hubbard S.S., Fleckenstein J.H., Maier U., Schmidt C., Thullner M., Ulrich C., Flipo N., Rubin Y. (2016) Simulating bioclogging effects on dynamic riverbed permeability and infiltration, Water Resources Research, 52(4):2883-2900

Gonzalez-Pinzon R, Peipoch M., Haggerty R., Marti E. and Fleckenstein J.H. (2016) Nighttime and daytime respiration in a headwater stream, Ecohydrology, 9:93-100

Musolff A. Schmidt C., Selle, B., Fleckenstein J.H. (2015) Catchment controls on solute export, Advances in Water Resources, 86: 133-146.

Liggett J., Partington D., Frei S., Werner A.D., Simmons C.T., Fleckenstein J.H. (2015) An exploration of coupled surface-subsurface solute transport in a fully integrated catchment model, Journal of Hydrology, 529: 969-979.

He W., Beyer C., Fleckenstein, J.H., Jang E., Kolditz O., Naumov D. Kalbacher T. (2015) A parallelization scheme to simulate reactive transport in the subsurface environment with OGS#IPhreeqc 5.5.7-3.1.2, Geoscientific Model Development, 8: 3333–3348.

Trauth, N., Schmidt C, Vieweg M., Oswald S.E., and Fleckenstein, J.H. (2015) Hydraulic controls of in-stream gravel bar hyporheic exchange and reactions, Water Resources Research, 51:2243-2263, doi:10.1002/2014WR015857.

Pinay G., Peiffer s., de Dreuzy J.R., Krause S., Hannah D.M., Fleckenstein, J.H.; Sebilo M., Bishop K., Hubert-Moy L., (2015) Upscaling nitrogen removal capacity from local hotspots to low stream orders’ drainage basins, Ecosystems, 18:1101-1120, doi10.1007/s10021-015-9878-5

Schmidt C. Büttner A., Musolff A. and Fleckenstein J.H., (2014) A method for automated, daily, temperature-based verticalstreambed water-fluxes, Fundamental and Applied Limnology, 184/3:173-181.

Trauth N., Schmidt C., Vieweg M., Maier U. and Fleckenstein J.H., (2014) Hyporheic transport and biogeochemical reactions in pool-riffle systems under varying ambient groundwater flow conditions, Journal of Geophysical Research – Biogeosciences, 119, 910–928, doi:10.1002/2013JG002586.

Müller, E.N., van Schaik, L., Blume, T., Bronstert, A., Carus, J., Fleckenstein, J.H., Fohrer, N., Geißler, K., Gerke, H.H., Graeff, T., Hesse, C., Hildebrandt, A., Hölker, F., Hunke, P., Körner, K., Lewandowski, J., Lohmann, D., Meinikmann, K., Schibalski, A., Schmalz, B., Schröder, B., Tietjen, B., (2014) Scales, key aspects, feedbacks and challenges of ecohydrological research in Germany, Hydrolologie und Wasserbewirtschaftung 58(4):221 – 240.

Krause S., Boano F., Cuthbert M., Fleckenstein J.H., Lewandowski, J. (2014) Understanding Process Dynamics at Aquifer-Surface Water Interfaces - An Introduction to the Special Section on New Modelling Approaches and Novel Experimental Technologies, Water Resources Research 50, 1–7, doi:10.1002/2013WR014755.

Frei S. and Fleckenstein J.H. (2014) Representing effects of micro-topography on runoff generation and sub-surface flow patterns by using superficial rill/depression storage height variations, Environmental Modelling & Software, 52:5-18, doi: 10.1016/j.envsoft.2013.10.007.

Bartsch, S., Frei S., Ruidisch M., Shope C.L., Peiffer S.. Kim B., and Fleckenstein J.H., (2014), River-Aquifer Exchange Fluxes under Monsoonal Climate Conditions, Journal of Hydrology, 509:601-614, doi: 10.1016/j.jhydrol.2013.12.005.

Bartsch S., Peiffer S, Shope C.L., Arnhold S., Jeong J.J. Park, J.H., Eum J., Kim B., and Fleckenstein J.H., (2013) Monsoonal-type climate or land-use management: Understanding their role in the mobilization of nitrate and DOC in a mountainous catchment, Journal of Hydrology, 507:149-162, doi: 10.1016/j.jhydrol.2013.10.012.

Trauth N., Schmidt C., Maier U., Vieweg M. and Fleckenstein J.H. (2013) Coupled 3D stream flow and hyporheic flow model under varying stream and ambient groundwater flow conditions in a pool-riffle system, Water Resources Research, 49:1-17, doi: 10.1002/wrcr.20442.

Kopp B.J., Fleckenstein J.H., Roulet N.T., Humphreys S. and Blodau C. (2013) Impact of long-term drainage on summer groundwater flow patterns in the Mer Bleue peatland, Ontario, Canada, Hydrology and Earth System Sciences, 17:3485-3498.

Partington D., Brunner P., Frei S., Simmons C.T., Werner A.D., Therrien R., Maier, H.R., Dandy G.C., Fleckenstein J.H. (2013) Interpreting streamflow generation mechanisms from integrated surface-subsurface flow models of a riparian wetland and catchment, Water Resources Research,49: 1–19, doi:10.1002/wrcr.20405.

Vieweg M., Trauth N., Fleckenstein J.H., Schmidt C. (2013) Robust optode-based method for measuring in situ oxygen profiles in gravelly streambeds, Environmental Science and Technology, 47:9858-9868, doi:10.1021/es401040w.

Shope C., Bartsch S.,Kim K., Kim B.,Tenhunen J., Peiffer S., Park J.H., Ok, Y.S., Fleckenstein J.H., Koellner T. (2013) A weighted, multi-method approach for accurate basin-wide streamflow estimation in an ungauged watershed, Journal of Hydrology, 494:72-82, doi:10.1016/j.jhydrol.2013.04.035.

Neumann C., Beer J., Blodau C., Peiffer, S. and Fleckenstein J.H. (2013) Spatial patterns of groundwater-lake exchange – implications for acid neutralization processes in an acid mine lake, Hydrological Processes, 27:3240-3253, doi: 10.1002/hyp.9656

Strohmeier S., Reichert M., Frei S., Knorr K.-H., Fleckenstein J.H., Peiffer S., Matzner E. (2013) Concentrations and fluxes of dissolved organic carbon in runoff from a forested catchment: insights from high frequency measurements, Biogeosciences,10:905-916

Frei S., Knorr K.-H., Peiffer S. and Fleckenstein J.H. (2012) Surface micro-topography can cause hot-spots of biogeochemical activity in wetland systems, Journal of Geophysical Research – Biogeosciences, 117, G00N12

Schmidt C., Musolff A., Trauth N., Vieweg M. and Fleckenstein J. H. (2012) Transient analysis of fluctuations of electrical conductivity as tracer in the stream bed, Hydrology and Earth System Sciences, 16:3689–3697

Angermann L., Lewandowski J., Fleckenstein J.H., Nützmann G. (2012) A 3D analysis algorithm to improve interpretation of heat pulse sensor results for the determination of small-scale flow directions and velocities in the hyporheic zone, Journal of Hydrology, 475:1-11

Jeong J.J., Bartsch S., Fleckenstein J.H., Matzner E., Tenhunen J. Lee S.D., Park S.K., Park J.H. (2012) Differential storm responses of dissolved and particulate organic carbon in a mountainous headwater stream investigated by high-frequency in-situ optical measurements, Journal of Geophysical Research – Biogeosciences, 117, doi 10.1029/2012JG001999

Lewandowsk, J., Angermann L., Nützmann G., Fleckenstein J.H. (2011) A heat pulse technique for the determination of small-scale flow directions and flow velocities in the streambed of sand bed-streams, Hydrological Processes, 25:3244-3255

Krause S., Hannah D.M., Fleckenstein J.H., Heppel C.M. Kaeser D., Pickup R., Pinay G., Robertson A.L., Wood P.J. (2011) Interdisciplinary perspectives on processes in the hyporheic zone, Ecohydrology, 4:481-499

Fleckenstein, J.H., Krause, S., Hannah, D.M., Boano, F. (2010) Groundwater-surface water interactions: New methods and models to improve understanding of processes and dynamics, Advances in Water Resources, 33(11):1291-1295.

Frei, S., Lischeid, G. and Fleckenstein J.H. (2010) Effects of micro-topography on surface-subsurface exchange and runoff generation in a virtual riparian wetland – a modeling study, Advances in Water Resources, 33(11):1388-1401.

Schornberg C., Schmidt C., Kalbus E. and Fleckenstein J.H. (2010) Simulating the effects of geologic heterogeneity and transient boundary conditions on streambed temperatures - implications for temperature-based water flux calculations, Advances in Water Resources, 33(11), 1309-1319.

Frei, S., Fleckenstein, J.H., Kollet S., Maxwell R.M. (2009) Patterns and dynamics of river-aquifer exchange with variably saturated flow using a fully coupled model, Journal of Hydrology,375(3-4), 383-393.

Fleckenstein, J.H. and Schmidt C. (2009) Theme issue: Groundwater-surface water interactions, Editorial, Grundwasser 14(3), 161-162.

Fleckenstein, J.H., Neumann, C., Volze, N., Beer, J. (2009) Spatio-temporal patterns of groundwater lake exchange in an acid mine lake, Grundwasser, 14(3), 207-217.

Krause, S., Hannah, D.M., Fleckenstein, J.H. (2009) Hyporheic hydrology: interactions at the groundwater-surface water interface, Hydrological Processes, 23(15),2103-2107.

Anibas, C., Fleckenstein, J.H., Volze, N., Buis, K., Verhoeven, R., Meire, P., Batelaan, O. (2009) Transient or Steady-state? Using vertical temperature profiles to quantify groundwater-surface water exchange, Hydrological Processes, 23(15) 2165-2177.

Fleckenstein J.H., and Fogg, G.E. (2008) Efficient upscaling of hydraulic conductivity in heterogeneous alluvial aquifers, Hydrogeology Journal, 16(7):1239-1250.

Fleckenstein, J.H., Niswonger, R.G. and Fogg, G.E. (2006) River-aquifer interactions, geologic heterogeneity, and low flow management, Ground Water, 44(6), 837-852.

Fleckenstein, J.H., Anderson, M, Fogg, G.E. and Mount, J. (2004) Managing surface water-groundwater to restore fall flows in the Cosumnes River, Journal of Water Resources Planning and Management, 130(4), 301-310.

Publications at UFZ (UFZ Publication Index)


2021 (11)
2020 (4)
2019 (7)
2018 (6)
2017 (8)
2016 (8)
2015 (7)
2014 (7)
2013 (9)
2012 (4)
2011 (3)
2010 (3)
2009 (1)

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