Dr. Joost Delsman is an expert in the field of freshwater resources management. He focuses on groundwater – surface water interactions in coastal lowlands. Improving management of the adverse effects of salinisation of surface water is a key part of his work, as is the development of innovative solutions to improve local freshwater supply. He has worked on projects ranging from large scale groundwater and surface water modelling for regional to national policy consulting, to field scale process understanding through integration of measurements and modelling. In addition, dr. Delsman has also developed several innovative tools to facilitate stakeholder process understanding. He is currently involved in a number of international research projects, to develop operational freshwater management, to measure groundwater salinity using airborne geophysics, and to use late Pleistocene and Holocene landscape evolution to derive groundwater salinity in data-scarce areas.
|2008 - present||Deltares, Unit Subsurface and Groundwater Systems||Hydrologist, researcher freshwater management|
|2010 - 2015||Department of Life and Earth Sciences at VU University Amsterdam||PhD researcher groundwater – surface water interactions in coastal lowlands|
|2003 - 2008||Rijkswaterstaat, Rijksinstituut voor Integraal Zoetwaterbeheer en Afvalwaterbehandeling||Hydrologist|
Fresh Water Options Optimizer
Valencia, Spain, 2015 – present
Positions held: project lead
Main project features: Identifying promising local measures for a sustainable agriculture
Activities performed: identifying measures, defining business cases, co-organising workshops.
ESCACES, water scarcity in Valle del Cauca, Cali, Colombia
Cáli, Colombia, CVC, RVO, 2015 – present
Positions held: researcher
Main project features: Supporting regional government in sustainable management of groundwater resources
Activities performed: field data collecting, analysing field data, local workshops, courses, groundwater modeling, model evaluation
Knowledge for Climate Theme 2
Netherlands, 2010 – 2015
Positions held: researcher
Main project features: researching potential measures to optimise freshwater management in coastal lowlands
Activities performed: field measurements, analysing field data, detailed groundwater modelling, rapid modelling, writing scientific papers, conference presentations, knowledge dissemination
National Hydrological modelling Instrument
Netherlands, 2003 – 2010
Positions held: researcher, steering committee secretary
Main project features: The development of a nation-wide consensus hydrological model
Activities performed: groundwater modelling, surface water modelling, data collection, organising steering committee meetings, report writing
Freshwater management of the Haarlemmermeer
Waterboard Rijnland, Netherlands, 2015 – present
Positions held: project leader, principal researcher
Main project features: Collecting available knowledge on salinisation and freshwater management of the Haarlemmermeer polder. Studies on innovative measures to improve freshwater management
Activities performed: data collecting, report writing, surface water modelling
Saline groundwater - surface water interaction in coastal lowlands.
Delsman, J. R. (2015). VU University Amsterdam.
Paleo-modeling of coastal saltwater intrusion during the Holocene: an application to the Netherlands. Hydrology and Earth System Sciences
Delsman, J. R., Hu-a-ng, K. R. M., Vos, P. C., De Louw, P. G. B., Oude Essink, G. H. P., Stuyfzand, P. J., & Bierkens, M. F. P. (2014). 18, 3891–3905. doi: 10.5194/hess-18-3891-2014
Investigating summer flow paths in a Dutch agricultural field using high frequency direct measurements. Journal of Hydrology
Delsman, J. R., Waterloo, M. J., Groen, M. M. A., Groen, J., & Stuyfzand, P. J. (2014). 519, 3069–3085. doi: 10.1016/j.jhydrol.2014.10.058
Uncertainty estimation of end-member mixing using generalized likelihood uncertainty estimation (GLUE), applied in a lowland catchment
Delsman, J. R., Oude Essink, G. H. P., Beven, K. J., & Stuyfzand, P. J. (2013). Water Resources Research, 49, 4792–4806. doi:10.1002/wrcr.20341
An operational, multi-scale, multi-model system for consensus-based, integrated water management and policy analysis: The Netherlands Hydrological Instrument.
De Lange, W. J., Prinsen, G. F., Hoogewoud, J. C., Veldhuizen, A. A., Verkaik, J., Oude Essink, G. H. P., Delsman, J. R., Hunink, J. C., Massop, H. T. L., Kroon, T. (2014). Environmental Modelling and Software, 59, 98–108. doi:10.1016/j.envsoft.2014.05.009
Low-resolution modelling of dense drainage networks in confining layers. Groundwater
Pauw, P. S., Van der Zee, S. E. A. T. M., Leijnse, A., Delsman, J. R., De Louw, P. G. B., De Lange, W. J., & Oude Essink, G. H. P. (2014). doi:10.1111/gwat.12273
Dunne regenwaterlenzen in zoute kwelgebieden. Landschap
De Louw, P. G. B., Oude Essink, G. H. P., Eeman, S., Van Baaren, E. S., Vermue, E., Delsman, J. R., Pauw, P.S., Siemon, B., Gunnink, J. L., Post, V. E. A. (2015). (1), 5–15.