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Dr. Inge de Graaf


Scientific employee

Chair of Environmental Hydrological Systems
Albert-Ludwigs-University of Freiburg
Friedrichstraße 39
D-79098 Freiburg

Fon: +49 (0)761 - 203 67437
Fax: +49 (0)761 - 203 3594
E-Mail: de-graaf.gif
Twitter: @Inge_deGraaf

Branch office "Blue Container", Stefan-Meier-Straße 31a

Ingeborg de Graaf


I am a hydrologist interested in regional- to continental scale groundwater systems, groundwater sustainability, groundwater lateral flows, groundwater-surface water interactions, and hyper-resolution hydrological modelling. I pursue my research interests by numerical modelling at the continental- to global scale and learn from trends and anomalies from the past to predict the future. I grew up in the Netherlands, got interested in ‘water’ and ‘system earth’, decided to study Hydrology at Wageningen University, did my PhD in Large-Scale Hydrology at Utrecht University, and went to Colorado School of Mines for a postdoc research on large-scale hyper-resolution hydrological modelling. After that I came to Freiburg and I am excited to be part of the new group of Environmental Hydrological Systems in Freiburg.

I am the course coordinator of the MSc course large scale datasets and modelling and the BSc course Forschungsmethoden Boden und Wasser. I am involved in the teaching of the MSc course Global Environmental Change. I currently have open MSc projects, please contact me for details.

Research gate for references and citations.

LinkedIn profile for short CV and connections.

I blog on the water underground blog; a groundwater nerd blog written by a global collective of hydrogeologic researchers for professionals, academics, and anyone who is interested in water.


Scientific Publications

In the oven ... :

De Graaf, I.E.M., L. Condon, R.M. Maxwell, Hyper Resolution Aquifer Map for North America (in review).


De Graaf, I.E.M., Gleeson, T., van Beek, L.P.H., Sutanudjaja, E.H. & Bierkens, M.F.P. Environmental flow limits to global groundwater pumping. Nature 574, 90-94 (2019), doi.org/10.1038/s41586-019-1594-4 
Sutanudjaja, E.H., R. van Beek, N. Wanders, Y. Wada, J.H.C. Bosmans, N. Drost, R.J. van der Ent, I.E.M. de Graaf, J.M. Hoch, K. de Jong, D. Karssenberg, P. Lopez Lopez, S. Pessenteiner, O. Schmitz, M.W. Straatsma, E. Vannametee, D. Wisser, M.F.P. Bierkens (2017) PCR-GLOBWB 2: a 5 arc-minute global hydrological and water resources model, Geosci. Model Dev. Discuss., doi.org/10.5194/gmd-20170288.
De Graaf, I.E.M., L.P.H. van Beek, T. Gleeson, N. Moosdorf, O. Schmitz, E.H. Sutanudjaja, M. F. P. Bierkens (2017), A global-scale two-layer transient groundwater model: Development and application to groundwater depletion. Advances in Water Resources, 102, 53-67, doi:10.1016/j.advwateres.2017.01.011. special issue
S. Koirala, M. Jung, M. Reichstein, I.E.M. de Graaf, G. Camps-valls, K. Ichii, D. Papale, B. Raduly, C. Schwalm, G. Tramontana, and N. Carvalhais (2017), Determinants of the groundwater-vegetation interaction at the global scale vegetation properties determine groundwater-productivity interactions, Geophysical Research Letters, doi:/10.1002/2017GL072885.
Wada, Y., I.E.M. de Graaf. L.P.H. van Beek (2016) High-resolution modelling of human and climate impacts on global water resources, Journal of Advances in Modeling Earth Systems, doi:10.1002/2015MS000618.
De Graaf, I.E.M., E.H. Sutanudjaja, L.P.H. van Beek, and M.F.P. Bierkens (2015) A high resolution global scale groundwater model, HESS, 19, 823-837, doi:10.5194/hess-19-823-2015. Editors Highlight
De Graaf, I.E.M., L.P.H. van Beek, Y. Wada, and M.F.P. Bierkens (2014) Dynamic attribution of global water demand to surface water and groundwater resources: Effects of abstractions and return flows on river discharges, Advances in Water Resources, 64, 21-33, doi:10.1016/j.advwatres.2013.12.002
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