Janez Susnik PhD

Deputy Head of the IWSG Department


I have three main research interests:

Using systems thinking and modelling to explore the global water-energy-food system. I am interested in assessing long-term water balance projections and scenarios under an uncertain global future. I have recently extended the use of this tool to link these projections directly to impacts in food and economic sectors and for assessing reservoir resilience (see publications below). I am exploring ways to expand the scope and scale of my previous work to include seamless global water-energy-food assessment in order to explore the viabiltiy of these systems under global development, and to understand the causal links between economic growth and human development.

Exploring the future urban water demand, attempting to model this into the future, and investigating technical and social ways for reducing this demand, particularly with a focus on alternative water supply technologies. A particular interest is investigating the extent to which cities can be 'self-reliant' on local water resources by increasing supply (especially through alternative measures), reducing demand, and becoming more water-efficient.

Related to the topics above, I have an interest in urban water-energy relationships to assess how cities can become more resource efficient in a time of increasing pressure on natural resources.

I am currently involved in the following research projects:

SIM4NEXUS (www.sim4nexus.eu). Funded by the Horizon2020 programme. I am a Work Package co-leader, and member of the Project Coordination Team. I have a major role in the integrative modelling component of the project concerned with amalgamating the outputs from numerous specialised thematic models into one seamless systems analysis.

AltWater (www.altwater.un-ihe.org). Funded under the DUPC2 programme, which is financed by the Ministry of Foriegn Affairs. I am the Project Leader. This project assess the potential of alternative water supplies in four cities (Maputo and Beira, Mozambique; Surabaya and Gresik, Indonesia) both now and under future conditions to determine the potential impact of rolling out these technologies to increase water security under changing climatic and socio-economic conditions.

Interdepartmental Global Water Hotspot analysis. Led by PBL (Dutch Environment Assessment Agency). Major global assessment of hotspots of critical current and forecoming water issues. My work is focussed on potential water quality issues, and the impact to human health.

I teach throughout our Water Management and Governance MSc programme, and am involved in the mentoring of MSc students. I am also a guest lecturer at IHS, Erasmus University, Rotterdam.

Before joining IHE Delft, I was Research Fellow at the Centre for Water Systems, University of Exeter, working on two EU FP7 funded projects (WASSERMed and PREPARED). Before that I was with JBA Consulting (UK). I completed my PhD at the University of East Anglia, Norwich, and gained my BSc from Lancaster University.


Susnik J., van der Zaag P. 2017. Correlation and causation between the UN Human Development Index and national and personal wealth and resource exploitation. Economic Research (Ekonomska Istrazivanja). 30(1): 1705-1723. DOI: 10.1080/1331677X.2017.1383175 

Valek AM., Susnik J., Grafakos S. 2017. Quantification of the urban water-energy nexus in Mexico City, Mexico, with an assessment of water-system related carbon emissions. Science of the Total Environment. 590-591: 258-268. DOI: 10.1016/j.scitotenv.2017.02.234

Mereu S., Susnik J., Trabucco A., Daccache A., Vamvakeridou-Lyroudia L.S., Renoldi S., Virdis A., Savic D.A., Assimacopoulos D. 2016. Operational resilience of reservoirs to climate change, agricultural demand, and tourism: a case study from Sardinia. Science of the Total Environment. 543: 1028-1038. DOI:10.1016/j.scitotenv.2015.04.066

Susnik J. 2015. Economic metrics to estimate current and future resource use, with a focus on water withdrawals. Sustainable Production and Consumption. 2: 109-127. DOI: 10.1016/j.spc.2015.05.003

Susnik J., Vamvakeridou-Lyroudia L.S., Baumert N., Kloos J., Renaud F.G., La Jeunesse I., Mabrouk B., Savic D.A., Kapelan Z., Ludwig R., Fischer G., Roson R., Zografos C. 2015. Interdisciplinary assessment of sea-level rise and climate change impacts on the lower Nile delta, Egypt. Science of the Total Environment. 503-504: 279-288. DOI: 10.1016/j.scitotenv.2014.06.111

Susnik J., Strehl, C., Postmes, L.A., Vamvakeridou-Lyroudia L.S., Malzer, H-J., Savic D.A., Kapelan Z., 2015, Assessing financial loss due to pluvial flooding and the efficacy of risk-reduction measures in the residential property sector. Water Resources Management. 29(1): 161-179. DOI: 10.1007/s11269-014-0833-6

Susnik J., Vamvakeridou-Lyroudia L.S., Savic D.A., Kapelan Z., 2013. Integrated modelling of the water-agricultural system in the Rosetta region, Nile delta, Egypt, using system dynamics. Journal of Water and Climate Change. 4(3): 209-231. DOI: 10.2166/wcc.2013.069

Susnik J., Molina J-L., Vamvakeridou-Lyroudia L.S., Savic D.A., Kapelan Z., 2013. Comparative analysis of System Dynamics and Object-Oriented Bayesian Networks modelling for water systems management. Water Resources Management. 27(3): 819-841. DOI: 10.1007/s11269-012-0217-8.

Susnik J., Vamvakeridou-Lyroudia L.S., Savic D.A., Kapelan Z., 2012, Integrated System Dynamics Modelling for water scarcity assessment: Case study of the Kairouan region. Science of the Total Environment. 440: 290-306. DOI: 10.1016/j.scitotenv.2012.050.085.

Alexander J., Barclay J., Susnik J., Loughlin S. C., Herd R. A., Darnell A. and Crosweller S., 2010, Sediment-charged flash floods on Montserrat: The influence of synchronous tephra fall and varying extent of vegetation damage, Journal of Volcanology and Geothermal Research, 194: 127-138.

Barclay J., Alexander J., and Susnik J., 2007, Rainfall-induced lahars in the Belham Valley, Montserrat, West Indies, Journal of the Geological Society, 164: 815-827.