Catalin Stefan

• Managed aquifer recharge (MAR)
• Surface-groundwater interactions
• Laboratory and field-based investigations for estimation of MAR efficiency
• Integrated water resources management

Supervision and review of dissertations as TUD Young Investigator from 2016 to 2021 according to the Doctoral Degree Regulations of the Faculty of Environmental Sciences of Technische Universität Dresden.

As first supervisor:

• Thomas Fichtner (2021)
  Optimierung der Standort- und Betriebsparameter von Infiltrationsbecken zur künstlichen Grundwasseranreicherung hinsichtlich quantitativer und qualitativer Effizienz
• Felix Barquero Kamrath (2020)
  Infiltration capacity assessment of managed aquifer recharge spreading basins under variable climates
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• Jana Glass (2019)
  New advances in the assessment of managed aquifer recharge through modelling
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• José Pablo Bonilla Valverde (2017)
  Managed aquifer recharge assessment to overcome water scarcity during the dry season in Costa Rica
  Download dissertation

As second supervisor:

• Miguel Alonzo Moreno Gomez (2021)
  Development of an integrated methodology to estimate groundwater vulnerability to pollution in karst areas
• Jana Sallwey (2020)
  Advancing the use of geographic information systems, numerical and physical models for the planning of managed aquifer recharge schemes
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• Lydia Kwoyiga (2019)
  Institutions, Groundwater Resources and Climate Change Adaptation in Northern Ghana
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As reviewer:

• Martin Ortwin Binder (2020)
  Nachverfolgung von Niederschlagswässern im porösen Medium anhand von d²H-/d¹⁸O- Stabilisotopensignaturen und elektrischer Leitfähigkeit – eine kritische Bewertung
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• Catalina Zapata Barra (2021)
  The holistic value of managed aquifer recharge (MAR): assessing its influence on the environment and the synergies and trade-offs triggered by the interraction among ecosystem services. Master thesis, Technische Universität Dresden, September 2021 (joint supervision with the United Nations University, Institute for Integrated Management of Material Fluxes and of Resources - UNU-FLORES)
• Muhammad Muqeet Iqbal (2019)
  Assessing the denitrification potential of managed aquifer recharge (MAR). Master thesis, Technische Universität Dresden, September 2019 
  (joint supervision with the International Groundwater Resources Assessment Center)
• Saunak Sinha Ray (2019)
  Household water insecurity in a coupled human and natural system: Empirical evidence from rural and peri-urban communities of Limpopo, South Africa. Master thesis, Technische Universität Dresden, August 2019
  (joint supervision with the International Water Management Institute and the

  IHE Delft Institute for Water Education)

• Gloria Mozzi (2019)
  Structure scale impact of widespread managed aquifer recharge implementation in Gujarat, India. Master thesis, Technische Universität Dresden, August 2019
  (joint supervision with the International Water Management Institute - IWMI)
• Eduardo Bernardo da Silva (2016)
  Use of soil column tests in bench scale for assessing the feasibility of a Soil Aquifer Treatment (SAT) with river water and secondary effluent of a Wastewater Treatment Plant in João Pessoa, Paraíba (Brazil). Master thesis, Technische Universität Dresden
  (in cooperation with Georg-August-University Göttingen)
• Fritz Kalwa (2016)
  Physical and Numerical Modeling of a Laboratory Scale Aquifer-Well System for Predicting the Injection Behavior of a Small-Diameter Well. Master thesis, Technische Universität Dresden
  (Joint supervision with the Institute for Groundwater Management)
• Susann Brecht (2015)
  Estimating groundwater recharge through tracer test at Pirna test site. Master thesis, Technische Universität Dresden, December 2015
• Dong Liu (2015)
  Überblick zum Einsatz von Tracersubstanzen in der umweltwissenschaftlichen Prozessforschung. Master thesis, Technische Universität Dresden, December 2015
• Paula Andrea Zapata Jaramillo (2015)
  Site selection for the implementation of management aquifer recharge (MAR) in Machuca River basin, Costa Rica. Master thesis, Technische Universität Dresden, November 2015
• Daniela Alejandra Via Rico (2015)
  Transient flow modelling of an exploited aquifer in the city of Hanoi, Vietnam and simulation of managed aquifer recharge measures. Master thesis, Technische Universität Dresden, October 2015
• Xunyu Fan (2015)
  Estimating groundwater recharge in Germany, Israel and Costa Rica with the help of unsaturated soil zone models. Master thesis, Technische Universität Dresden, October 2015
• Fahad Ejaz (2015)
  A decision support system for an integrated irrigation and groundwater management in the Punjab region of Pakistan. Master thesis, Technische Universität Dresden, September 2015
• Anne Strulik (2015)
  Analysis of managed groundwater recharge in Australia. Bachelor thesis, Technische Universität Dresden, June 2015
• Chia-Yun Rebecca Cheng (2015)
  Review of managed aquifer recharge (MAR) applications in China - achievements and challenges. Bachelor thesis, Technische Universität Dresden, June 2015
• Miguel Alonzo Moreno Gómez (2015)
  Methods for characterization of soil hydraulic properties and subsurface stratigraphy with application at an infiltration site in Pirna, Germany. Master thesis, Technische Universität Dresden, February 2015
• Anna-Sophie Strues (2014)
  Application of managed aquifer recharge in Asia. Bachelor Thesis, Technische Universität Dresden, November 2014
• Aybulat Fatkhutdinov (2013)
  Investigation of the effect of urbanisation on natural groundwater recharge within the city of Hanoi, Vietnam. Master Thesis, Technische Universität Dresden, October 2013
• Nguyen Hien Tam (2012)
  Data collection and interpretation for an exemplary material flow analysis at Tra Noc Industrial Zone in Can Tho City, Vietnam.Diploma Thesis. Technische Universität Dresden, November 2012
• Eam Sam Un (2011)
  Household-oriented approach for the optimization of resources management at the floating villages in Tonle Sap Lake region, Cambodia. Master Thesis. Technische Universität Dresden, December 2011
• Binxing Wang (2010)
  Development of a decision support system (DSS) for the efficiency assessment of soil-aquifer-treatment (SAT) and validation on column experiments. Master Thesis. Technische Universität Dresden, October 2010
• Tran My Hanh (2009)
  Assessment of clogging processes by column experiments using municipal sewage water and sandy soils. Master Thesis. Technische Universität Dresden, December 2009
• Nguyen Van Vu (2009)
  Investigations on physical clogging in artificial groundwater recharge systems. Master Thesis. Technische Universität Dresden, December 2009
• Supachai Hirunsupachote (2009)
  Assessment of waste utilization in palm oil industry and native starch industry for alternative energy production in Thailand. Master Thesis. Technische Universität Dresden, August 2009

Memberships in international associations

• Groundwater Solutions Initiative for Policy and Practice (GRIPP)
  (since 02.2016)
• International Association of Hydrogeologists (IAH)
  (since 09.2015)

2021

• Online Workshop: "Assessing the holistic impact of managed aquifer recharge (MAR) on ecosystem services". Workshop jointly organised with the United Nations University, Institute for Integrated Management of Material Fluxes and of Resources (UNU-FLORES) within the framework of DIGIRES project. 12 April 2021, online event.
  Download booklet

2020

• Online Training Course: "SMART-Control Software. Implementation of the first project training course in Cyprus". Course jointly organised with adelphi research gGmbH within the framework of SMART-Control project. 23-27 November 2020, online event.
  Download report

2019

• Open Space Workshop: “Innovative ideas for boosting nature-based solutions for climate change adaptation”. Workshop organised at the 10^th Water Research Horizon Conference on "Water security and food security", 18-19 June 2019, Hannover, Germany
  Download report
• Side-event Workshop: "Utilization of spatial analysis techniques for the identification of potential MAR areas: challenges and opportunities". Side-event workshop organised during the 10^th International Symposium on Managed Aquifer Recharge (ISMAR10), 20 May 2019, Madrid, Spain
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• Side-event Workshop: "Web-based numerical modeling and optimisation of MAR applications using the free INOWAS platform". Side-event workshop organised during the 10^th International Symposium on Managed Aquifer Recharge (ISMAR10), 20 May 2019, Madrid, Spain
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• International Workshop: "Green adaptation strategies for water security in the Central American dry corridor". International workshop organised as part of the Joint Germany – Costa Rica Networking and Research Project "Facilitation of green adaptation techniques for reduction of seasonal water scarcity in Costa Rica", 26 March 2019, Nicoya, Costa Rica
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2018

• Special Session: "Groundwater-based natural infrastructure solutions: The missing link to resilience?". Seminar convened by GRIPP partners IWMI, CAWR, IGRAC, IGES, DWFI at the World Water Week 2018, on 28 August 2018, Stockholm, Sweden
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• Side-event Workshop: "Web-based modeling of managed aquifer recharge using the free INOWAS DSS platform". Half-day workshop organised along the 16^th Biennial Symposium on Managed Aquifer Recharge (BSMAR16) held on 5-7 March 2018, San Diego, California, USA
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2017

• International Summer School: "Second International INOWAS Summer School on Managed Aquifer Recharge (MAR)", 4-15 September 2017, Dresden, Germany
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• Open Space Workshop: "Bring it back to where you took it from!". Workshop organised during the GIZ Symposium on Rural Development and Water "Leave no one behind - shortage of ressources in times of increasing social inequality" (FATA 2017) on 5-7 July 2017, Bad Neunahr, Germany
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2016

• International Summer School: "First International INOWAS Summer School on Managed Aquifer Recharge (MAR)", 4-9 September 2016, Dresden, Germany
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• Side-event Workshop: "Global MAR inventory workshop" organised together with the International Groundwater Resources Assessment Center (IGRAC) and Berlin Centre of Competence for Water (KWB) during the 9^th International Symposium on Managed Aquifer Recharge (ISMAR9), 20 June 2016, Mexico City, Mexico
  Download programme

2012

• Workshop Series: "Urban drainage in Vietnam - challenges and future concepts". Series of four workshops organised in Vietnam in 2012: Hanoi (2-3 October and 5-6 November), Vung Tau (4-5 November) and Ho Chi Minh City (8-9 November). Events organised within the framework of IWAS Vietnam project.

2011

• Training Course: "Urban construction planning". Training organised for head officials from the Ministry of Construction in Vietnam on behalf of the Vietnamese Academy of Managers for Construction and Cities, Juni - November 2011, Dresden - Berlin, Germany
• Workshop Series: "Enabling efficient wastewater management in Vietnam". Series of four workshops organised in Vietnam in 2011: Hanoi (1 and 3 October), Ho Chi Minh City (2 October) and Vung Tau (7 October 2011). Events organised within the framework of IWAS Vietnam project.
• Study Tour: "Environmental Incidents and Mitigation Responses". Events organised for a high-ranking delegation from the Vietnamese Ministry of Natural Resources and Environment (MONRE). 17-23 July 2011, Dresden, Germany 

2010

• Capacity Development Initiative: "German - Vietnamese Platform for Efficient Urban Water Management" (TEAM). Event organised as part of the BMBF initiative "German year in Vietnam 2010" with the occassion of 35th anniversary of diplomatic relations between Germany and Vietnam. 14-21 September 2010, München - Berlin - Dresden, Germany

• Mozzi, G., Pavelic, P., Alam, M.F., Stefan, C., Villholth K.G. (2021) Hydrologic Assessment of Check Dam Performances in Semi-Arid Areas: A Case Study From Gujarat, India. Frontiers in Water, 3: 628955. https://doi.org/10.3389/frwa.2021.628955
• Glass, J., Šimůnek, J., Stefan, C. (2020) Glass, J., Šimůnek, J., & Stefan, C. (2020)
  Scaling factors in HYDRUS to simulate a reduction in hydraulic conductivity during infiltration from recharge wells and infiltration basins. Vadose Zone Journal, 19:e20027. https://doi.org/10.1002/vzj2.20027.
• Sallwey, J., Schlick, R., Bonilla, J., Stefan, C. (2019) Suitability mapping for managed aquifer recharge: development of web-tools. Water, 11(11): 2254. https://doi.org/10.3390/w11112254.

• Sallwey, J., Barquero, F., Fichtner, T., Stefan, C. (2019) Planning MAR schemes using physical models: comparison of laboratory and field experiments. Applied Sciences, 9(18): 3652. https://doi.org/10.3390/app9183652.

• Moreno-Gómez, M., Martinez-Salvador, C., Moulahoum, A.-W., Liedl, R., Stefan, C., Pacheco, J. (2019) First steps into an integrated karst aquifer vulnerability approach (IKAV). Intrinsic groundwater vulnerability analysis of the Yucatan karst, Mexico. Water, 11(8): 1610. https://doi.org/10.3390/w11081610.

• Barquero, F., Fichtner, T., Stefan, C. (2019) Methods of in situ assessment of infiltration rate reduction in groundwater recharge basins. Water, 11(4): 784. https://doi.org/10.3390/w11040784.

• Moreno-Gómez, M., Liedl, R., Stefan, C. (2019) A new GIS-based model for karst dolines mapping using LiDAR; application of a multidepth threshold approach in the Yucatan karst, Mexico. Remote Sensing, 11(10): 1147. https://doi.org/10.3390/rs11101147.

• Kwoyiga, L., Stefan, C. (2019) Institutional Feasibility of Managed Aquifer Recharge in Northeast Ghana. Sustainability, 11(2): 379. https://doi.org/10.3390/su11020379.

• Fichtner, T., Barquero, F., Sallwey, J., Stefan, C. (2019) Assessing Managed Aquifer Recharge Processes under Three Physical Model Concepts. Water, 11(1): 107.  https://doi.org/10.3390/w11010107.

• Fichtner, T., Goersmeyer, N., Stefan, C. (2019) Influence of Soil Pore System Properties on the Degradation Rates of Organic Substances during Soil Aquifer Treatment (SAT). Applied Sciences, 9(3), 496. https://doi.org/10.3390/app9030496.

• Kwoyiga, L., Stefan, C. (2018) Groundwater Development for Dry Season Irrigation in North East Ghana: The Place of Local Knowledge. Water, 10(12): 1724.  https://doi.org/10.3390/w10121724.

• Sallwey, J., Bonilla Valverde, J.P., Vásquez López, F., Junghanns, R., Stefan, C. (2018)
  Suitability maps for managed aquifer recharge: a review of multi-criteria decision analysis studies. Environmental Reviews, 27(2): 138-150. https://doi.org/10.1139/er-2018-0069.

• Dillon, P., Stuyfzand, P., Grischek, T. [...], Stefan, C., [...] et al. (2018) Sixty years of global progress in managed aquifer recharge. Hydrogeology Journal, 27(1): 1-30. https://doi.org/10.1007/s10040-018-1841-z.

• Vígolo Coutinho, J., das Neves Almeida, C., da Silva, E.B., Stefan, C., Barbosa Athayde Júnior, G., Moreira Gadelha, C.L., Walter, F. (2018) Managed aquifer recharge: study of undisturbed soil column tests on the infiltration and treatment capacity using effluent of wastewater stabilization pond. Brazilian Journal of Water Resources, v.23, e50.  https://doi.org/10.1590/2318-0331.231820180060.

• Glass, J., Jain, R., Junghanns, R., Sallwey, J., Fichtner, T., Stefan, C. (2018) Web-based tool compilation of analytical equations for groundwater management applications. Environmental Modelling & Software, 108: 1-7. https://doi.org/10.1016/j.envsoft.2018.07.008.

• Fatkhutdinov, A., Stefan, C. (2018) Multi‐Objective Optimization of Managed Aquifer Recharge. Groundwater, 57(2): 238-244. https://doi.org/10.1111/gwat.12793.
• Moreno Gomez, M., Pacheco, J., Liedl, R., Stefan, C. (2018) Evaluating the applicability of European karst vulnerability assessment methods to the Yucatan karst, Mexico. Environmental Earth Sciences, 77: 682. https://doi.org/10.1007/s12665-018-7869-5.
• Glass, J., Via Rico, D.A., Stefan, C., Tran, T.V.N. (2018) Simulation of the impact of managed aquifer recharge on the groundwater system in Hanoi, Vietnam. Hydrogeology Journal, 26: 2427–2442. https://doi.org/10.1007/s10040-018-1779-1.
• Bonilla Valverde, J.P., Stefan, C., Palma Nava, A., da Silva, E.B., Pivaral Vivar, H.L. (2018) Inventory of managed aquifer recharge schemes in Latin America and the Caribbean. Sustainable Water Resources Management, 4: 163-178. https://doi.org/10.1007/s40899-018-0231-y.
• Sallwey, J., Glass, J., Stefan, C. (2018) Utilizing unsaturated soil zone models for assessing managed aquifer recharge. Sustainable Water Resources Management, 4: 383–397. https://doi.org/10.1007/s40899-018-0214-z.
• Stefan, C., Ansems, N. (2018) Web-based global inventory of managed aquifer recharge applications. Sustainable Water Resources Management, 4(2): 153-162.  https://doi.org/10.1007/s40899-017-0212-6.
• Ringleb, J., Sallwey, J., Stefan, C. (2016) Assessment of Managed Aquifer Recharge through Modeling—A Review. Water, 8(12): 579. https://doi.org/10.3390/w8120579.
• Bonilla Valverde, J.P., Blank, C., Roidt, M., Schneider, L., Stefan, C. (2016) Application of a GIS Multi-Criteria Decision Analysis for the Identification of Intrinsic Suitable Sites in Costa Rica for the Application of Managed Aquifer Recharge (MAR) through Spreading Methods. Water, 8(9): 391. https://doi.org/10.3390/w8090391.
• Stefan, C. (2014) Groundwater vulnerability in Vietnam and innovative solutions for sustainable exploitation. Journal of Vietnamese Environment, 6(1): 13-21. https://doi.org/10.13141/jve.vol6.no1.pp13-21.
• Seegert, J., Berendonk, T. U., Bernhofer, C., [...], Stefan, C., Strehlitz, B., Teutsch, G., Weigelt, C., Weiß, H., Kolditz, O., Borchardt, D., Krebs, P. (2014). Integrated water resources management under different hydrological, climatic and socio-economic conditions: Results and lessons learned from a transdisciplinary IWRM project IWAS. Environmental Earth Sciences, 72(12), 4677–4687. https://doi.org/10.1007/s12665-014-3877-2.
• Stefan, C., Fröhlich, T., Fuchs, L., Junghanns, R., Phan, H.M., Tran, V.N., Werner, P. (2012) Sustainable water resources management in the Long Bien district of Hanoi, Vietnam. Water Science and Technology: Water Supply, 12(6): 737-746. https://doi.org/10.2166/ws.2012.049.
• Fischer, A.R., Stefan, C., Silabetzschky, K., Werner, P., Hoc, B. (2011) Soil aquifer treatment as a tool for sustainable groundwater use in Hanoi/Vietnam. Journal of Environmental Protection, 2(8): 882-887. http://doi.org/10.4236/jep.2011.27100.
• Polubesova, T., Chena, Y., Stefan, C., Selle, M., Werner, P., Chefetz, B. (2009) Sorption of polyaromatic compounds by organic matter-coated Ca²⁺- and Fe³⁺-montmorillonite. Geoderma, 154(1-2): 36-41. https://doi.org/10.1016/j.geoderma.2009.09.009.
• Stefan, C., Werner, P. (2009) How to Protect Water Resources in Hanoi. International Water Research Alliance Saxony in Vietnam. Technikfolgenabschätzung – Theorie und Praxis, 2(18): 77-81. https://doi.org/10.14512/tatup.18.2.77.

• Bonilla Valverde, J.P., Stefan, C. (2017)
  Manejo de la recarga de acuíferos, p. 65-79. In: Escolero Fuentes, O., Gutiérrez Ojeda, C., Mendoza Cázares, E.Y. (Ed.). Manejo de la recarga de acuíferos: un enfoque hacia Latinoamérica. Instituto Mexicano de Tecnología del Agua, 978 p.
• Werner, P., Röstel, G., Fuchs, L., Stefan, C. (2011)
  Integrated water rources management in Vietnam - Handbook for a sustainable approach. FAA e.V., vol. 73, ISBN 978-3-934253-65-0, 247 p.

2021

• Chekirbane, A., Stefan, C., Schlick, R., Aloui, D., Mlayah, A. (2021) Enhancing the implementation of managed aquifer recharge (MAR) technology through geospatial analysis and web-based decision support tools to cope with water scarcity in arid and semi-arid regions of Tunisia. Presentation at the 48^th Congress of the International Association of Hydrogeologists. Brussels, Belgium, 6-10 September 2021
• Glass, J., Junghanns, R., Schlick, R., Stefan, C. (2021) Implementation of a new framework for real-time monitoring and modelling of subsurface processes at a pilot managed aquifer recharge site in Pirna, Germany. Presentation at the 48^th Congress of the International Association of Hydrogeologists. Brussels, Belgium, 6-10 September 2021
• Conrad, A., Stefan, C., Panagiotou, C.F., Heim, R. (2021) Results and relevance of stakeholder trainings on reducing the risks associated with managed aquifer recharge (MAR). Presentation at the 48^th Congress of the International Association of Hydrogeologists. Brussels, Belgium, 6-10 September 2021
• Panagiotou, C.F., Karaolia, P., Stefan, C., Papanastasiou, P., Sprenger, C. (2021) Quantitative microbial risk analysis (QMRA) for setting health-based performance targets during soil-aquifer treatment: application to the Ezousa site in Cyprus. Presentation at the 48^th Congress of the International Association of Hydrogeologists. Brussels, Belgium, 6-10 September 2021

2020

• Stefan, C., Caucci, S. (2020) Using wastewater to recharge the aquifers: from limitations to opportunities and practical implementation. Presentation at the Dresden Nexus Conference 2020 (eDNC2020), Dresden, Germany, 3-5 June 2020

2019

• Stefan, C., Glass, J. (2019) SMART-Control: Web-based real-time monitoring and modeling of managed aquifer recharge applications. Presentation at the Wokshop: "A whole day on MAR: Managed aquifer recharge as a real climate change adaptation mechanism. Examples and indicators from five countries". Workshop organised as side event within the EIP Water Innovation Conference 2019 “Accelerating action to tackle water pollution and enhance EU preparedness to water-related climate change impacts”. Zaragoza, Spain, 11 December 2019. Download workshop report
• Stefan, C. (2019) Web-based modelling framework for the sustainability of water management under a changing climate. Presentation at the 10th Brazilian-German Frontiers of Science and Technology Symposia 2019 (BRAGFOST), Munich, Germany, 5-8 September 2019
• Stefan, C., Glass, J. (2019) SMART-Control: smart framework for real-time monitoring and control of subsurface processes in managed aquifer recharge applications. Presentation at the 10th Water Research Horizon Conference 2019, Hannover, Germany, 18-19 June 2019
• Glass, J., Šimůnek, J., Stefan, C. (2019) Integration of time-variable scaling factors in HYDRUS to simulate the reduction of hydraulic conductivity due to clogging during managed aquifer recharge operation. Presentation at the 10th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019
• Glass, J., Li, T., Sprenger, C., Stefan, C. (2019) Investigation of viscosity effects caused by seasonal temperature fluctuations during MAR. Poster presented at the 10th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019
• Sallwey, J., Barquero, F., Fichtner, T., Stefan, C. (2019) MAR assessment through physical models: comparison of laboratory and field experiments. Presentation at the 10th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019
• Bonilla Valverde, J.P., Merizalde Dobles, J., Stefan, C. (2019) MAR techniques as adaptation measures to improve urban resilience regarding global change in tropical regions: the case of Costa Rica. Presentation at the 10th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019
• Stefan, C., Junghanns, R., Glass, J., Sallwey, J., Barquero, F., Fichtner, T., Schönekerl, C. (2019) Using free web-based tools for strengthening capacities and promotion of MAR. Presentation at the 10th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019
• Barquero, F., Burt, N., Wallström, J., Stefan, C. (2019) Laboratory investigation for management of clogging in MAR infiltration basins. Presentation at the 10th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019
• Barquero, F., Binte, R., Mahmood, H., Muqeet, M., Stefan, C. (2019) Laboratory experiments for the assessment of the impact of solar irradiance on clogging of MAR basins. Presentation at the 10th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019
• Sallwey, J., Schlick, R., Bonilla Valverde, J.P., Junghanns, R., Vásquez López, F., Stefan, C. (2019) Suitability maps for managed aquifer recharge: review and tool development. Presentation at the 10th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019
• Sterckx, A., Stefan, C. (2019) The MAR portal: a web-based tool for sharing MAR-related information. Presentation at the 10th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019

2018

• Kwoyiga, L., Stefan, C. (2018) Feasibility of implementing managed aquifer recharge (MAR) as part of efforts to addressing climate change impacts on groundwater recharge in Northern Ghana. Presentation at the 2nd International Conference "Women in Science Without Borders (Indaba 2018)". University of Johannesburg, South Africa, 21-23 March 2018
• Sallwey, J, Glass, J., Fatkhutdinov, A., Fichtner, T., Junghanns, R., Stefan, C. (2018) Webbasierte Simulation und Management von künstlicher Grundwasseranreicherung. Presentation at the Conference "Messen, Modellieren, Managen in Hydrologie und Wasserressourcenbewirtschaftung (M3 Tag der Hidrologie)". Dresden, Germany, 22-23 March 2018
• Stefan, C., Junghanns, R., Glass, J., Sallwey, J., Fichtner, T., Fatkhutdinov, A. (2018) INOWAS DSS: web-based modeling framework for planning and assessment of managed aquifer recharge schemes. Presentation at the 16th Biennial Symposium on Managed Aquifer Recharge (BSMAR16). San Diego, California, USA, 6-7 March 2018
• Barquero, F., Fichtner, T., Stefan, C. (2018) Managed aquifer recharge through surface spreading methods: Optimization of infiltration process by means of physical models. Presentation at the 16th Biennial Symposium on Managed Aquifer Recharge (BSMAR16). San Diego, California, USA, 6-7 March 2018
• Bonilla Valverde, J.P., Stefan, C. (2018) Opportunities for managed aquifer recharge in Costa Rica. Presentation at the 16th Biennial Symposium on Managed Aquifer Recharge (BSMAR16). San Diego, California, USA, 6-7 March 2018

2017

• Glass, J., Sallwey, J., Junghanns, R., Fichtner, T., Stefan, C. (2017) Web-based compilation of empirical and analytical equations for the sustainable management of groundwater resources. Presentation at the 44th IAH Congress "Groundwater Heritage and Sustainability". Dubrovnik, Croatia, 25-29 September 2017. doi: 10.13140/RG.2.2.11414.86083
• Stefan, C., Junghanns, R., Glass, J., Sallwey, J., Fatkhutdinov, A., Fichtner, T., Barquero, F. (2017) A multi-scale perspective for the modeling of managed aquifer recharge (MAR) applications. Presentation at the 44th IAH Congress "Groundwater Heritage and Sustainability". Dubrovnik, Croatia, 25-29 September 2017. doi: 10.13140/RG.2.2.11205.14561
• Junghanns, R., Stefan, C., Glass, J., Sallwey, J., Fatkhutdinov, A. (2017) MODFLOW-based web modelling framework. Presentation at the 44th IAH Congress "Groundwater Heritage and Sustainability". Dubrovnik, Croatia, 25-29 September 2017. doi: 10.13140/RG.2.2.10366.28488
• Stefan, C. (2017) Managed aquifer recharge: solution for sustainable management of water resources. Presentation at 8th Water Research Horizon Conference. Hamburg, Germany, 18-20 September 2017
• Stefan, C. (2017) Junior Research Group INOWAS. Presentation at Status-Konferenz Nachwuchsgruppen Globaler Wandel 4+1 . Bonn, Germany, 5-7 September 2017
• Moreno, M., Pacheco, J., Stefan, C., Liedl, R. (2017) Evaluation and congruency between European karst vulnerability methodologies from their application on the Yucatán Karst, México. Presentation at the International Scientific Meeting "Man and Karst 2017". Zadar, Croatia, 26-29 June 2017
• Glass, J., Stefan, C., Junghanns, R. (2017) Free MODFLOW-based web modeling framework for planning and assessment of managed aquifer recharge schemes. Presentation at the MODFLOW and More 2017: "Modeling for Sustainability and Adaptation" Conference. Golden, Colorado, USA, 21-24 May 2017
• Stefan, C., Junghanns, R., Fatkhutdinov, A., Glass, J., Sallwey, J. (2017) Web-Based Modelling Framework for Planning and Assessment of Managed Aquifer Recharge Applications. Presentation at Dresden Nexus Conference 2017. Dresden, Germany, 17-19 May 2017
• Stefan, C. (2017) Managed aquifer recharge as tool for adaptation of cities to global change. Presentation at Dresden Nexus Conference 2017. Dresden, Germany, 17-19 May 2017
• Glass, J., Fichtner, T., Stefan, C. (2017) Stepwise calibration of hydraulic conductivity changes in a laboratory tank simulating managed aquifer recharge operation. Presentation at the 5th International Conference "HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems". Prague, Czech Republic, 30-31 March 2017
• Stefan, C. (2017) Free web-based modeling platform for sustainable groundwater management. Presentation at African Water and Climate Resilience Symposium. Bloemfontein, South Africa, 22-23 February 2017

2016

• Stefan, C., Junghanns, R., Ringleb, J., Fatkhutdinov, A. (2016) Web-based decision support system for hydrological modeling. Presentation at the 3rd DAAD Alumni Workshop in Hanoi, Vietnam, October 26-28, 2016
• Dillon, P., Stuyfzand, P., Lluria, M., Bear, J., Schwarz, J., Grischek, T., Stefan, C., Pyne, D., Wang, W., Fernandez, E., Jain, R.C., Massmann, G. (2016) Sixty years of progress in research and practice of managed aquifer recharge. Presentation at 43rd IAH Congress, Montpellier, France, September 25-29, 2016
• Sallwey, J., Ringleb, J., Fatkhutdinov, A., Junghanns, R., Stefan, C. (2016) Web-based decision support system for planning and management of MAR sites. Presentation at 43rd IAH Congress. Montpellier, France, September 25-29, 2016
• Stefan, C., Ansems, N. (2016) Web-GIS of global inventory of managed aquifer recharge applications. Presentation at 9th International Symposium on Managed Aquifer Recharge. Mexico City, Mexico, June 20-24, 2016
• Stefan, C., Fatkhutdinov, A., Ringleb, J., Sallwey, J., Fichtner, T., Bonilla, J., Moreno, M., Barquero, F., Junghanns, R. (2016) Integrated web-based framework for planning and assessment of managed aquifer recharge applications. Presentation at 9th International Symposium on Managed Aquifer Recharge. Mexico City, Mexico, June 20-24, 2016
• Sallwey, J., Ringleb, J., Stefan, C. (2016) Potential of unsaturated soil zone models for assessment of managed aquifer recharge. Presentation at 9th International Symposium on Managed Aquifer Recharge. Mexico City, Mexico, June 20-24, 2016
• Bonilla Valverde, J.P., Stefan, C., Palma Nava, A., da Silva, E.B., Pivaral Vivar, H.L. (2016) Inventory of managed aquifer recharge schemes in Latin America. Presentation at 9th International Symposium on Managed Aquifer Recharge. Mexico City, Mexico, June 20-24, 2016
• Ringleb, J., Via Rico, D.A., Stefan, C., Tran, T.V.N. (2016) Transient flow modelling of an exploited aquifer in the city of Hanoi, Vietnam and simulation of managed aquifer recharge measures. Presentation at 9th International Symposium on Managed Aquifer Recharge. Mexico City, Mexico, June 20-24, 2016

2015

• Fatkhutdinov, A., Ringleb, J., Stefan, C. (2015) A web-GIS based modelling and data management tool for groundwater applications. Presentation at 42nd IAH Congress (AQUA2015). Rome, Italy, September 13-18, 2015
• Stefan, C. (2015) Global MAR index - worldwide database for managed aquifer recharge applications. Presentation at 42nd IAH Congress (AQUA2015). Rome, Italy, September 13-18, 2015
• Bonilla, J., Kalwa, F., Händel, F., Stefan, C. (2015) Implementation of a laboratory scale aquifer-well model. Presentation at 42nd IAH Congress (AQUA2015). Rome, Italy, September 13-18, 2015
• Ringleb, J., Stefan, C. (2015) Review on model applications to evaluate managed aquifer recharge. Presentation at 42nd IAH Congress (AQUA2015). Rome, Italy, September 13-18, 2015
• Stefan, C., Strues, A.-S. (2015) Development, distribution and characteristics of managed aquifer recharge schemes in Asia. Presentation at 2015 International Conference on Water Resources and Environment (WRE2015). Beijing, China, July 25-28, 2015
• Guo, J., Cheng, C.R., Stefan, C. (2015) Review of the managed aquifer recharge (MAR) applications in China - achievements and challenges. Presentation at 2015 International Conference on Water Resources and Environment (WRE2015). Beijing, China, July 25-28, 2015
• Fichtner, T., Stefan, C., Goersmeyer, N. (2015) Determination of degradation rates of organic substances in the unsaturated soil zone depending on the grain size fractions of various soil types. Presentation at European Geosciences Union General Assembly 2015. Vienna, Austria, April 12-17, 2015. Abstract published in Geophysical Research Abstracts, Vol. 17, EGU2015-12005
• Bonilla Valverde, J.P., Stefan, C. (2015) Management of aquifer recharge in Costa Rica: a tool for managing the water scarcity in the dry season. Presentation at the 25th Meeting of doctoral students in hydrogeology. Berlin, Germany, March 25-27, 2015

2014

• Stefan, C. (2014) Groundwater vulnerability in Vietnam and innovative solutions for sustainable exploitation. Presentation at the 2nd DAAD Alumni Workshop "Sustainable management of environment and natural resources in Vietnam". Hanoi, Vietnam, November 4-6, 2014
• Stefan, C. (2014) Groundwater conservation - challenges and opportunities for Vietnam. Guest lecture at Hanoi National University of Education. Hanoi, Vietnam, November 7, 2014

2021

• Stefan, C., Schlick, R., Scohier, A., Fernandez, L., Montenegro, S., Goderniaux, P. (2021) Modelling groundwater recharge scenarios in Recife, (Brazil) using the web-based simulation tools of the INOWAS platform. Poster presented at the 48^th Congress of the International Association of Hydrogeologists. Brussels, Belgium, 6-10 September 2021

2019

• Glass, J., Stefan, C., Sprenger, C., Chakrabarti, R., Montenegro, S., Almeida, C., Papanastasiou, P., Stylianou, M., Maréchal, J.-C., Schneider, T., Duzan, A. (2019)
  Smart framework for real-time monitoring and control of subsurface processes in managed aquifer recharge applications. Poster presented at the 10^th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019.
• Bonilla, J., Sallwey, J., Vazquez, F., Dupont, F., Sterckx, A., Stefan, C. (2019)
  MARSI: a proposal for an common suitability mapping approach for managed aquifer recharge using surface spreading. Poster presented at the 10^th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019.
• Henao Casas, J.D., Low Calle, J.F., Barquero, F., Sallwey, J., Stefan, C. (2019)
  Improving SAT underground oxygen conditions by air bio-sparging. Poster presented at the 10^th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019.
• Bautista-Solís, P., Stefan, C., Alfaro, C., Bonilla Valverde, J.P., Suarez Serrano, A. (2019)
  Beyond demand-driven adaptation: A governance perspective for MAR implementation in Guanacaste, Costa Rica. Poster presented at the 10^th International Symposium on Managed Aquifer Recharge. Madrid, Spain, 20-24 May 2019.

2018

• Fichtner, T., Barquero, F., Stefan, C. (2018)
  Ermittlung optimaler Bedingungen für die Minimierung von Kolmationsprozessen während des Betriebes von Infiltrationsbecken zur künstlichen Grundwasseranreicherung. Poster presented at the Conference "26. Tagung der Fachsektion Hydrogeologie e. V. in der DGGV e.V.". Bochum, Germany, 21-24 March 2018
• Glass, J., Stefan, C., Junghanns, R., Sallwey, J., Fichtner, T. (2018)
  Webbasierte Simulationsplattform für die Planung und Bewertung von Anlagen zur künstlichen Grundwasseranreicherung. Presentation at the Conference "26. Tagung der Fachsektion Hydrogeologie e. V. in der DGGV e.V.". Bochum, Germany, 21-24 March 2018

2017

• Fichtner, T., Barquero, F., Stefan, C. (2017)
  Determination of optimal conditions for minimizing clogging processes occurring during the operation of managed aquifer recharge (MAR) based on lab and field-scale experiments. Poster presented at the 44th IAH Congress "Groundwater Heritage and Sustainability". Dubrovnik, Croatia, 25-29 September 2017
• Sallwey, J., Ansems, N., Stefan, C. (2017)
  Decission support tool for the selection of suitable managed aquifer recharge methods. Poster presented at the 44th IAH Congress "Groundwater Heritage and Sustainability". Dubrovnik, Croatia, 25-29 September 2017
• Bonilla Valverde, J.P., Arguedas Negrini, J.L., Stefan, C. (2017)
  Expected water demand in the Machuca river basin, Costa Rica, and potential supply sources. Poster presented at Dresden Nexus Conference 2017, Dresden, Germany, 17-19 May 2017
• Barquero, F., Stefan, C. (2017)
  Impact of climate variations on managed aquifer recharge infiltration basins. Poster presented at European Geosciences Union (EGU) General Assembly 2017. Vienna, Austria, April 23-28, 2017
• Stefan, C., Junghanns, R., Glass, J., Sallwey, J., Fatkhutdinov, A., Fichtner, T., Barquero, F., Moreno, M., Bonilla, J., Kwoyiga, L. (2017)
  Free web-based modelling platform for managed aquifer recharge (MAR) applications. Poster presented at European Geosciences Union (EGU) General Assembly 2017. Vienna, Austria, April 23-28, 2017

2016

• Ringleb, J., Fichtner, T., Stefan, C. (2016)
  Determination of clogging during managed aquifer recharge operation by laboratory experiments and mathematical models. Poster presented at 43rd IAH Congress. Montpellier, France, September 25-29, 2016
• Bonilla Valverde, J.P., Stefan, C., Arguedas Negrini, J.L. (2016)
  Integrating suitable sites for managed aquifer recharge with drinking water demand in Costa Rica. Poster presented at 9th International Symposium on Managed Aquifer Recharge. Mexico City, Mexico, June 20-24, 2016
• Moreno, M., Stefan, C., Liedl, R. (2016)
  Characterization of the Yucatan karst aquifer: intrinsic vulnerability scenarios and possible solutions. Poster presented at 9th International Symposium on Managed Aquifer Recharge. Mexico City, Mexico, June 20-24, 2016
• Fichtner, T., Vanzella de Melo, J.A., Stefan, C. (2016)
  Influence of experimental set-up on the infiltration characteristics during managed aquifer recharge operation. Poster presented at European Geosciences Union (EGU) General Assembly 2015. Vienna, Austria, April 17-22, 2016. Abstract published in Geophysical Research Abstracts, Vol. 18, EGU2016-15982-2
• Fichtner, T., Vanzella de Melo, J.A., Stefan, C. (2016)
  Influence of experimental set-up on the infiltration characteristics during managed aquifer recharge operation.
• Kalwa, F., Bonilla, J., Händel, F., Binder, M., Stefan, C. (2016)
  A laboratory scale aquifer-well system for analyzing near-well processes. Poster presented at European Geosciences Union (EGU) General Assembly 2015. Vienna, Austria, April 17-22, 2016. Abstract published in Geophysical Research Abstracts, Vol. 18, EGU2016-14400
• Bonilla, J., Kalwa, F., Händel, F., Binder, M., Stefan, C. (2016)
  Can the Dupuit-Thiem equation accurately describe the flow pattern induced by injection in a laboratory scale aquifer-well system? Poster presented at European Geosciences Union (EGU) General Assembly 2015. Vienna, Austria, April 17-22, 2016. Abstract published in Geophysical Research Abstracts, Vol. 18, EGU2016-13880

2015

• Bonilla, J., Stefan, C. (2015)
  Identification of groundwater potential recharge zones in the Machuca River basin in the Central Pacific of Costa Rica using a GIS multi-criteria-analysis. Poster presented at American Geoscience Union (AGU) Fall Meeting, San Francisco, USA, December 14-18, 2015
• Stefan, C., Ringleb, J., Sallwey, J., Fichtner, T., Fatkhutdinov, A., Guo, J., Bonilla, J., Moreno, M., Schönekerl, C., Gräber, P.-W., Liedl, R. (2015)
  Holistic approach for planning and implementation of managed aquifer recharge applications. Poster presented at 42nd IAH Congress (AQUA2015). Rome, Italy, September 13-18, 2015
• Sallwey, J., Ringleb, J., Stefan, C. (2015)
  Model based scenario analysis for planning and design of managed aquifer recharge sites. Poster presented at 42nd IAH Congress (AQUA2015). Rome, Italy, September 13-18, 2015
• Fichtner, T., Ringleb, J., Guo, J., Stefan, C. (2015)
  Lab-scale infiltration tank experiments to investigate the influence of infiltration scenarios on the water balance and the soil pore system of the unsaturated zone - setup, modeling and the first results. Poster presented at 42nd IAH Congress (AQUA2015). Rome, Italy, September 13-18, 2015
• Fichtner, T., Liu, D., Stefan, C. (2015)
  Influence of environmental conditions on the stability of dye tracers Brilliant Blue FCF, Uranine and Eosine Y. Poster presented at 42nd IAH Congress (AQUA2015). Rome, Italy, September 13-18, 2015
• Moreno, M., Fichtner, T., Stefan, C. (2015)
  Methods for characterization of soil hydraulic properties and subsurface stratigraphy with application at an infiltration site in Pirna, Germany. Poster presented at 42nd IAH Congress (AQUA2015). Rome, Italy, September 13-18, 2015
• Guo, J., Fichtner, T., Stefan, C. (2015)
  Downscaling experiment with a laboratory 2D soil tank under a constant infiltration rate as basis of the design of 3D infiltration test system in the lab and field. Poster presented at 42nd IAH Congress (AQUA2015). Rome, Italy, September 13-18, 2015
• Ringleb, J., Sallwey, J., Stefan, C. (2015)
  Comparison of different estimation techniques to quantify groundwater recharge in Pirna, Germany. Poster presented at European Geosciences Union General Assembly 2015. Vienna, Austria, April 12-17, 2015. Abstract published in Geophysical Research Abstracts, Vol. 17, EGU2015-3594-1
• Stefan, C., Fatkhutdinov, A., Sallwey, J., Ringleb, J., Fichtner, T., Guo, J., Bonilla, P., Gräber, P.-W., Liedl, R. (2015)
  Multi-component web-based decision support system for management of water resources. Poster presented at Dresden Nexus Conference 2015. Dresden, Germany, March 25-27, 2015
• Strues, A.-S., Stefan, C. (2015)
  Managed aquifer recharge (MAR) index for Asia. Poster presented at Dresden Nexus Conference 2015. Dresden, Germany, March 25-27, 2015
• Stefan, C. (2015)
  INOWAS: Innovative web-based decisions support system for water sustainability under a changing climate. Poster presented at the Kick-off Meeting "Global Change 4+1". Bonn, Germany, January 20-21, 2015

2014

• Stefan, C., Guo, J., Graeber, P.-W. (2014)
  INOWAS Junior Research Group: Development of an innovative web-based decision support system for water sustainability under a changing climate. Poster presented at 11th PhD Workshop on Hydrological Modeling. Center for Environmental Systems Research, University of Kassel, Germany, May 15-17, 2014

• Bonilla, J.; Stefan, C. (2020) "Utilization of spatial analysis techniques for the identification of potential MAR areas: challenges and opportunities". Report of the Workshop organised within the 10th International Symposium on Managed Aquifer Recharge (ISMAR10) in Madrid, Spain, 20 May 2019
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• Stefan, C.; Suárez, A.; Bautista, P.; Alfaro, C.; Caucci, S.; Junghanns, R.; Walther, M. (2019) "Green adaptation strategies for water security in the Central American dry corridor". Report of the project kick-off workshop in Nicoya, Costa Rica, 26 March 2019 
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• Stefan, C., Fuchs, L., Vassolo, S.I., Villholth, K., Glass, J. (2019) "Innovative ideas for boosting nature-based solutions for climate change adaptation". Report of the Open Space Workshop organized at the 10th Water Research Horizon Conference on “Water Security and Food Security”, June 18-19, 2019. Hannover, Germany.
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• Nagabhatla, N., Avellán, T., Pouramin, P., Qadir, M., Mehta, P., Payne, J., Stefan, C., Hülsmann, S., Abrate, T., Teruggi, G., Pischke, F., Oakas, R., Ceola, S., Cudennec, C., Deregibus, I., Kuisma, S. (2019) Chapter 2. "Physical and environmental dimensions", p. 44-57. In: WWAP (UNESCO World Water Assessment Programme). 2019. "The United Nations World Water Development Report 2019: Leaving No One Behind". Paris, UNESCO.
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• Stefan, C. (2021) Welcome address for the official opening of the 3^rd International Summer School on Managed Aquifer Recharge (MARISS), University of Applied Sciences, Dresden, 23 August 2021
• Stefan, C. (2021) "Managed aquifer recharge as adaptation tool to global change". Invited talk at EXCELSIOR online seminar "Water Resources Management", ERATOSTHENES Centre of Excellence, Cyprus University of Technology (CUT). Online event, 15 June 2021
• Stefan, C. (2021) "Managed aquifer recharge as adaptation tools to global change: opportunities and ways forward". Invited talk at the online seminar "What's new in hydro?" organised by the German Expert Group of Hydrogeology of the German Geological Society (Fachsektion Hydrogeologie in der Deutschen Geologischen Gesellschaft) “FH-DGGV” and the German Chapter of the International Association of Hydrgeologists “IAH-D”. Online event, 14 January 2021
• Stefan, C. (2020) "IAH Commission on managing aquifer recharge". Invited talk at the First Virtual Regional Session organised by the Regional Centre on Groundwater Resource Education, Training & Research (RCGW) in Nairobi, Kenya, 8 September 2020
• Stefan, C. (2019) "Managed aquifer recharge: general considerations and its role in the hydrological cycle". Invited talk at the School of Health Technologies of University of Costa Rica, San José, Costa Rica, 4 April 2019
• Stefan, C. (2017) "Managed aquifer recharge – challenges and international opportunities". Invited talk at the University of Applied Science, Jena, Germany, 28 November 2017
• Stefan, C. (2016) "Managed aquifer recharge around the world". Invited talk at Deutsche Gesellschaft für Internationale Zusammenarbeit GmbH, Guatemala City, Guatemala, 30 September 2016
• Stefan, C. (2016) "Managed aquifer recharge around the world". Invited talk at Instituto Tecnológico de Costa Rica (TEC), San José, Costa Rica, 22 September 2016
• Stefan, C. (2016) "Global managed aquifer recharge inventory experiences and perspectives". Invited talk at Instituto Costarricense de Acueductos y Alcantarillados, San Jose, Costa Rica, 29 September 2016
• Stefan, C. (2016) "Managed aquifer recharge in the world". Invited talk at Costa Rica Institute of Technology, Cartago, Costa Rica, 22 September 2016
• Stefan, C. (2014) "Groundwater conservation - challenges and opportunities for Vietnam". Invited talk at Hanoi National University of Education, Hanoi, Vietnam, 7 November 2014