Our research currently focusses on global scale integrated hydrology and water resources modelling in relation to global change. Additionaly we work on a large variety of hydrology-related projects in the field of: groundwater hydrology, groundwater salinization, ecohydrology, land-atmosphere interaction, flood risk and water quality.

A list of past and current research projects is given below:

  • PhD: On-line DA and ensemble forecasting groundwater and soil moisture (TNO/PI/2003): 180 k€PhD: Groundwater and climate (NWO-ALW/PI/2004): 200 k€
  • PhD; AQUATERRA (European Union FP6/WP leader/2004): 220 k€
  • Project Summerschool Climate and the hydrological Cycle (National Funding/project leader/2005): 40 k€
  • PhD DYNAQUAL – Dynamics of groundwater and surface water quality (TNO/promotor/2006): 180 k€
  • Small project: ESA Global Mass Distribution and Transport in the Earth System (ESA/collaborator/2007): 60 k€
  • Postdoc: thermo-dynamical conspiracy of the Himalaya’s (NWO Casimir programme/advisor/2008) 100 k€
    PhD: Multi-satellite and multi-sensor application for large-scale groundwater assessment (NWO-GO/PI/2008): 200 k€
  • PhD: Facility for global assessment of hydrological effects of climate change (Deltares/PI/2008): 180 k€
  • PhD: Global seasonal forecasting of River discharge (Deltares/PI/2008): 180 k€PhD: Modelling past and future global water stress
    (UU F&M/PI/2009): 180 k€
  • PhD: Climate and vegetation shifts the during Roman Classical period (UU F&M/promotor/2009): 90 k€
  • PhD: Limits to global groundwater consumption (NWO-ALW/PI/2011): 220 k€
  • Postdoc: Quantifying the Water Tower of the Third Pole (NWO VENI-scheme/advisor/2011): 250 k€
  • Postdoc: GLOWASIS - (European Union FP7/WP leader/2011): 120 k€
  • PhD: Monitoring Strategy Hydrogeological parameters (TNO/promoter/2011): 240 k€.
  • Postdoc: Water2Invest.com  (European Institute of Technology Climate KIC/PI/2012): 190 k k€ (projectleider van totaal project 470 k€)
  • Postdoc: Data-Intensive Modeling of the Global Water Cycle: Bringing the 4th Paradigm to Hydrology (NWO high-performance computing programme/advisor/2012): 135 k€
  • Small projects for performing runs for ISI-MIP fast track (20 k€) and Water Futures and Solution (IIASA/UNESCO: 30 k€).
  • PhD: Climate Cascades – Integrated catchment model and fate of pathogens and heavy metals (RIVM): 260 k€.
  • PhD: The effect of mega-nourishments on freshwater reserves, salt water intrusion and fresh water outflow (NWO-STW Perspectieven project NatureCoast/PI and WP leader/2013): 250 k€.
  • PhD1: Regional downscaling of global water resources models. Part of EU project EartH2Observe (EU FP7/promotor/2014); PhD2: Global hydrology and water resources modeling and re-analysis. Part of EU project EartH2Observe (EU FP7/PI/2014): 500 k€.
  • Postdoc: Past and future impact of anthropogenic changes to the water cycle on regional and global climate (UU Sustainability/PI/2014): 150 k€
  • Small project: Pilot Glob-wide water availability analysis around Shell assets (Shell global solutions/PI/2014): 60 k€.
  • PhD: Global high-resolution database of current and future river flood hazard (EIT Climate KIC/PI/2014): 270 k€
  • PhD: Fresh groundwater reserves in 40 major deltas under global change (NWO–The New Delta/PI/2015): 250 k€
  • PhD1: Rapid regional mapping of salt-fresh water distributions; PhD 2: Rapid modelling and scenarios for strategic policy development (NWO/STW Perspectieven project Water Nexus/PI and WP leader/2015): 630 k€
  • Postdoc: Global flood analyser (World Resources Institute/PI/2014): 120 k€
  • Postdoc: Groundwater risk and update Aqueduct Atlas (World Resources Institute/PI/2015): 65 k€.
  • PhD: Groundwater-related failure risks of river dikes (NWO/STW perspectieven project All Risk): 300 k€
  • Postdoc: Tibet’s lakes as a gauge for global warming (NWO/co-PI/2019): 264 k€
  • Postdoc and model engineer: ARISE (EIT Climate KIC/co-PI/2019): 320 k€
  • PhD: GoNEXUS - Innovative tools and solutions for governing the water-energy-food-ecosystems NEXUS under global change (EU Horizon 2020/Co-PI/2020): 650 k€.
  • PhD1, PhD2, Postdoc: AquaConnect - Key technologies for safeguarding regional water provision in fresh water stressed deltas (NWO TTW Perspectieven/Ci-PI/2021): 800 k€.
  • 3PhDs + 2 Postdocs: GEOWAT – ERC Advanced Grant (ERC/PI/2021): 2,500 k€.
  • PhD: SOS Water - Water Resources System Safe Operating Space in a Changing Climate and Society (EU Horizon Europe, 2022)
  • PhD and 2 Postdoc – World Water Map (National Geographic Society, 2022, Co-PI): 2,400 k€.
  • Junior researcher – 4DHydro, Hyper-resolution modelling and earth observation (ESA, 2022, WP leader): 85 k€
Physical Limits to Global Groundwater Use 20.07.2022 to 19.07.2026
General project description

This work falls under the ERC funded project-  A Global Assessment of the Limits of Groundwater Use (GEOWAT). During this project, we aim to determine the physical limits of groundwater withdrawal by providing the first global estimates of fresh groundwater availability - subject to past and future human water use. A high resolution version of PCR-GLOBWB will be used to yield the locations of, and the times when, physical limits of fresh groundwater use will be reached. In addition, we will evaluate how technological strategies may increase the volume of extractable fresh groundwater and promote water table recovery.

No information available
GEOWAT: A Global Assessment of the Limits of Groundwater Use
General project description

GEOWAT: A Global Assessment of the Limits of Groundwater Use

NWO grant
Completed Projects
Piping in practice – Quantifying how subsurface heterogeneity affects piping processes below dikes using combined in 3D subsurface composition and groundwater flow models. 01.10.2016 to 31.12.2022
General project description

Piping is a process of seepage-induced transport of sand underneath river dikes that could occur when rivers flood and can make dikes fail. Prediction of piping risk at delta scale is difficult because it demands detailed knowledge on composition of the natural substrate below the dike, e.g. grain size distribution, sorting and layering and on the way seepage water flows through this; horizontally, diagonally, via preferential paths. This project aims to identify locations of increased piping-risk below river dikes of the Dutch delta. The methods involve improved mapping of substrate below dikes throughout the delta, measurement of hydraulic characteristics of the subsurface at field test locations, and full-3D hi-res numerical modeling of the piping process. This will result in faster and more cost-efficient identification of piping-risk locations and better-informed calculation of dike stability, needed to maintain safety standards along 100-kms of dike.

Other grant (government funding) STW WATER2015
External project members
  • dr. Marc Hijma - Deltares
  • dr. Vera van Beek - Deltares