Dr. rer. nat.

Thomas Demmel

Deputy Head

Lehr- und Forschungsgebiet Hydrogeologie


Building: Haus B

Room: 115

Lochnerstr. 4-20

52064 Aachen


Phone: +49 241 80 99776
Fax: +49 241 80 92280

Field of activities

  • Coordination of the “groundwater modelling” working group
  • Processing and management of commissioned and research projects
  • Data processing and programming
  • Supervision of Master- and Bachelorthesis
  • Supervision of field Equipment
  • Lectures: Hydrogeological models, Introduction to numerical modelling and Multivariate statistics

Research area

  • Geogenic and anthropogenic groundwater contamination
  • Hydrogeological modelling
  • Numerical groundwater modelling

Ongoing projects

Research projects

  • 2012-2014 Delineation of key pollution areas with uranium in groundwater in Southern Bavaria
  • 2012-2013 Investigation of the behavior of uranium containing phosphate fertilizers in terms of groundwater under special attention to mobilization of uranium from peat soils
  • 2012 Estimation of nitrate retention capacity in the catchment area of the wells 7, 8 and 9 of the water catchment plant Viersen using a simple model approach
  • 2010-2011 Distribution and sources of elevated Uranium concentrations in quaternary groundwater of Southern Bavaria
  • 2007-2010 The numerical groundwater model “Aachener Weg, Viersen” -Interaction and transport of contaminants between different aquifers


  • since 2010 research associate, Hydrogeology, RWTH Aachen University
  • 2010 PhD (Dr. rer. nat.): Interaction of communicating aquifers using the example of the numerical groundwater model “Aachener Weg, Viersen“
  • 2007-2010 PhD student, Hydrogeology, RWTH Aachen University
  • 2006-2010 Research Associate, Hydrogeology, RWTH Aachen University
  • 2004–2005 Graduate Assistant, IT Dept., German Youth Institute (DJI e.V.) (networking/administration/programming)
  • 1996-2004 Studies of Geology / Palaeontology at the Ludwig-Maximilians-Universität (LMU) Munich, specializing in hydrogeology and geology of mineral deposits, graduated with diploma. Thesis: Numerical flow model “Former chemical factory Weyl”, Munich. Geological mapping: Geological mapping of the Mutterberg-Schortenkopf area (Northern Bavarian Limestone Alps)



  • 2018 Wägerle, D.: Investigation of mobility of tetrachlorethylene in the matrix of a sandstone (Kreuznachformation, Rotliegendes)
  • 2018 Hansen, L.: Setting up a geological 3D-model at the northern margin of the Rhenisch Slate Mountains south of Rüthen and development of the hydrogeological model
  • 2017 Medgyesi, N.: From geological to numerical groundwater modelling: Evaluation of different conceptual approaches using the example of the Viersen-Mönchengladbach model
  • 2017 Böhmer, J.: Origin und accumulation processes of uranium in bogs and their function as uranium reservoir on the example of two calcareous lowland moors Donaumoos and Kalkarer Moor
  • 2016 Heiming, A.: Numerical modeling with vertical flow component of the deep aquifer in the graben of San Luis Potosí, Mexico
  • 2016 Schmidt, R.: Transient modelling of groundwater recharge in the area of Viersen – Mönchengladbach as upper boundary condition for numerical groundwater modelling (master thesis)
  • 2015 Ullmann, A.V.: Re-evaluation and extension of the conceptual model Viersen – Mönchengladbach using implicit 3D-modeling (master thesis)
  • 2015 Hellmann, D.P.: Concept of the occurrence of deeper sulphate groundwater in the shallow aquifer of the eastern Bayat plain (Indonesia) (master thesis)
  • 2015 Dornbusch, F.: Conceptualization and installation of a test rig for high frequency slug tests to verify physical assumptions and comparison with field experiments (master thesis)
  • 2015 Neuber, A.: Groundwater modeling of Samas-Parangtritis coastal aquifer and identification of potential saltwater intrusion (Yogyakarta, Indonesia) (master thesis)
  • 2015 Barzel, S.: Solution kinetics and groundwater hydraulics of the Frasne limestone of the thermal water district in the city of Aachen (master thesis)
  • 2014 Jelen, P.J.: Control of an in-situ remediation of CHC-contaminated groundwater using a numerical transport model (master thesis)
  • 2014 Lentowitsch, C.: Numerical transport modeling of a CHC plume in Nettetal region (NRW) and scenario analysis for the remediation of groundwater (master thesis)
  • 2013 Baumert, H.: Modeling of the mobilization and transportation of geogenic uranium in calceric eutric histosols by fertilization (master thesis)



Titel Autor(en)
The importance of fen peats as secondary source of high uranium concentrations in groundwater and its geological framework
Conference Presentation (2015)
Demmel, Thomas Georg
Rüde, Thomas R.
Wrobel, Michael
Abgrenzung von Belastungsschwerpunkten mit Uran im Grundwasser in Südbayern
Abstract, Contribution to a conference proceedings (2014)
Demmel, Thomas Georg
Rüde, Thomas R.
Wrobel, Michael
Groundwater Uranium Origin and Fate Control in a River Valley Aquifer
Journal Article (2013)
Banning, Andre
Demmel, Thomas Georg
Rüde, Thomas R.
Wrobel, Michael
Verteilung und Ursachen erhöhter Uran-Konzentrationen in quartärem Grundwasser Südbayerns
Abstract, Contribution to a conference proceedings (2012)
Rüde, Thomas R.
Banning, Andre
Demmel, Thomas Georg
Wrobel, Michael
Interaktion kommunizierender Grundwasserleiter am Beispiel des numerischen Grundwassermodells „Aachener Weg, Viersen“
Contribution to a book (2011)
Demmel, Thomas Georg
Rüde, Thomas R.
Schindler, Roland
Das numerische Grundwasserströmungsmodell «Aachener Weg, Viersen» : instationäre Kalibrierung und Szenarienanalyse
Abstract, Contribution to a conference proceedings (2010)
Demmel, Thomas Georg
Rüde, Thomas R.
Schindler, Roland
Interaktion kommunizierender Grundwasserleiter am Beispiel des numerischen Grundwassermodells 'Aachener Weg - Viersen'
Dissertation / PhD Thesis (2010)
Demmel, Thomas Georg
Das numerische Grundwassermodell „Aachener Weg, Viersen“ : Interaktion und Stofftransport kommunizierender Grundwasserleiter
Abstract, Contribution to a conference proceedings (2008)
Demmel, Thomas Georg
Rüde, Thomas R.
Schindler, R.