Gijs Simons

Managing Director/Senior Hydrologist


Gijs Simons is a hydrologist and remote sensing expert with over ten years of experience in managing and executing international projects in the field of water resources management. Countries of work experience include Cambodia, Egypt, Ethiopia, Lao PDR, Madagascar, Mali, Morocco, Mozambique, Myanmar, Nepal, The Netherlands, Philippines, Romania, Spain, Sudan, Uganda, and Vietnam. Gijs has advanced skills in hydrological modelling, satellite image interpretation and GIS analysis using a variety of tools (e.g. SPHY, SWAT, WEAP, InVEST, ArcGIS, QGIS, PCRaster, Python, R, Google Earth Engine) on the full range of spatial scales from a single agricultural field to an entire river basin. Gijs is the lead author and co-author of many publications, both peer-reviewed papers and technical reports. In addition, he has developed and conducted multiple training courses and workshops on remote sensing, GIS and hydrological modelling.

Gijs is currently the managing director of the FutureWater office in Wageningen, as well as a PhD researcher at Delft University of Technology focusing on water (re)use across a river basin on different spatial scales.

    Related publications

    • 2020 - FutureWater Report 212Contreras, S., C. Nolet, G.W.H. Simons, 2020. Monitor Ecopraderas: Seguimiento del estado de las praderas de la Vega del Alagón mediante indicadores de satélite. FutureWater Report 212X

      Monitor Ecopraderas: Seguimiento del estado de las praderas de la Vega del Alagón mediante indicadores de satélite

      Contreras, S., C. Nolet, G.W.H. Simons

    • 2020 - International Water Power & Dam Construction MagazineHunink, J.E., G.W.H. Simons, C. Mor, A. Oliver, 2020. Revenue sharing in small
      hydropower: is it worth it? International Water Power & Dam Construction Magazine. July 2020. 24-27X

      Revenue sharing in small hydropower: is it worth it?

      Hunink, J.E., G.W.H. Simons, C. Mor, A. Oliver

    • 2020 - FutureWater Report 202Koster, R., G.W.H. Simons. 2020. Evaluation of PAGDP plans in Madagascar with the LANDSIM-R prototype. FutureWater Report 202.X

      Evaluation of PAGDP plans in Madagascar with the LANDSIM-R prototype

      Koster, R., G.W.H. Simons

    • 2020 - Agricultural Water ManagementSimons, G.W.H., W.G.M. Bastiaanssen, M.J.M. Cheema, B. Ahmad, W.W. Immerzeel. 2020. A novel method to quantify consumed fractions and non-consumptive use of irrigation water: Application to the Indus Basin Irrigation System of Pakistan, Agricultural Water Management, Volume 236, 106174, ISSN 0378-3774,
      https://doi.org/10.1016/j.agwat.2020.106174.X

      A novel method to quantify consumed fractions and non-consumptive use of irrigation water: Application to the Indus Basin Irrigation System of Pakistan

      Simons, G.W.H., W.G.M. Bastiaanssen, M.J.M. Cheema, B. Ahmad, W.W. Immerzeel

    • 2019 - FutureWater Report 205Droogers, P., A. Green, G.W.H. Simons, I. Brownhall, C. Oeurng, T. Bonvongsar, J.E. Hunink. 2019. Rapid Assessment of the State of Water Resources for the Tonle Sap River Basin and Mekong Delta River Basin, Cambodia. FutureWater Report 205X

      Rapid Assessment of the State of Water Resources for the Tonle Sap River Basin and Mekong Delta River Basin, Cambodia

      Droogers, P., A. Green, G.W.H. Simons, I. Brownhall, C. Oeurng, T. Bonvongsar, J.E. Hunink

    • 2019 - FutureWater Report 206Green, A., K.G. Hortle, W. Giese, B. van Balen, D. Yem, J. Mills, I. Brownhall, P. Droogers, G.W.H. Simons, J.E. Hunink, C. Oeurng, T. Bonvongsar. 2019. Rapid Assessment of Eco-Hydrology for the Tonle Sap River Basin and Mekong Delta River Basin, Cambodia. FutureWater Report 206X

      Rapid Assessment of Eco-Hydrology for the Tonle Sap River Basin and Mekong Delta River Basin, Cambodia

      Green, A., K.G. Hortle, W. Giese, B. van Balen, D. Yem, J. Mills, I. Brownhall, P. Droogers, G.W.H. Simons, J.E. Hunink, C. Oeurng, T. Bonvongsar

    • 2019 - FutureWater Report 207Green, A., P. Droogers, G.W.H. Simons, B. van Balen, K. Hortle, C. Oeurng, T. Bonvongsar, D. Yem, J.E. Hunink. 2019. Detailed Surface Water Resources Assessment for the Tonle Sap and Mekong Delta River Basins, Cambodia. FutureWater Report 207X

      Detailed Surface Water Resources Assessment for the Tonle Sap and Mekong Delta River Basins, Cambodia

      Green, A., P. Droogers, G.W.H. Simons, B. van Balen, K. Hortle, C. Oeurng, T. Bonvongsar, D. Yem, J.E. Hunink

    • 2019 - FutureWater Report 208Nolet, C., J. Beard, A. Green, J.E. Hunink, G.W.H. Simons. 2019. Climate Risk Screening for the Tonle Sap River Basin and the Mekong Delta River Basin, Cambodia. FutureWater Report 208X

      Climate Risk Screening for the Tonle Sap River Basin and the Mekong Delta River Basin, Cambodia

      Nolet, C., J. Beard, A. Green, J.E. Hunink, G.W.H. Simons

    • 2019 - STOWA Report 2019-32Simons, G.W.H., M. de Klerk. 2019. Kennisbehoefte meteorologische en klimatologische informatie. STOWA Rapport 2019-32.X

      Kennisbehoefte meteorologische en klimatologische informatie

      Simons, G.W.H., M. de Klerk

    • 2019 - FutureWater Report 185Kaune, A., G.W.H. Simons, S. Pareeth, P. Karimi, M. Shaffei. 2019. SMART-WADI: SMART WAter Decisions for Iran. FutureWater Report 185X

      SMART-WADI: SMART WAter Decisions for Iran

      Kaune, A., G.W.H. Simons, S. Pareeth, P. Karimi, M. Shaffei

    • 2019 - WaterHunink, J.E, G.W.H. Simons, S. Suárez-Almiñana, A. Solera, J. Andreu, M. Giuliani, P. Zamberletti, M. Grillakis, A. Koutroulis, I. Tsanis, F. Schasfoort, S. Contreras, E. Ercin, W. Bastiaanssen. 2019. A Simplified Water Accounting Procedure to Assess Climate Change Impact on Water Resources for Agriculture across Different European River Basins. Water 2019, 11, 1976. doi:10.3390/w11101976X

      A Simplified Water Accounting Procedure to Assess Climate Change Impact on Water Resources for Agriculture across Different European River Basins

      Hunink, J.E, G.W.H. Simons, S. Suárez-Almiñana, A. Solera, J. Andreu, M. Giuliani, P. Zamberletti, M. Grillakis, A. Koutroulis, I. Tsanis, F. Schasfoort, S. Contreras, E. Ercin, W. Bastiaanssen

    • 2019 - IWMI Research ReportMcCartney, M., S. Foudi, L. Muthuwatta, A. Sood, G.W.H. Simons, J.E. Hunink, K. Vercruysse, C. Omuombo. 2019. Quantifying the services of natural and built infrastructure in the context of climate change: the case of the Tana River Basin, Kenya. IWMI Research Report 174.X

      Quantifying the services of natural and built infrastructure in the context of climate change: the case of the Tana River Basin, Kenya

      McCartney, M., S. Foudi, L. Muthuwatta, A. Sood, G.W.H. Simons, J.E. Hunink, K. Vercruysse, C. Omuombo

    • 2019 - FutureWater Report 181Simons, G.W.H., K. Viergever, A. Kaune. 2019. Remote Sensing for Land Suitability Assessment in Angola. FutureWater Report 181.
      X

      Remote Sensing for Land Suitability Assessment in Angola

      Simons, G.W.H., K. Viergever, A. Kaune

    • 2019 - FutureWater Report 194Hunink, J.E., J.P.C. Eekhout, J. de Vente, S. Contreras, G.W.H. Simons. 2019. Satellite-based altimetry data for hydrological assessments: two case studies Report 194X

      Satellite-based altimetry data for hydrological assessments: two case studies

      Hunink, J.E., J.P.C. Eekhout, J. de Vente, S. Contreras, G.W.H. Simons

    • 2018 - FutureWater Report 183Simons, G.W.H., J.E. Hunink. 2018. The business case for small hydropower schemes to invest in catchment management: two case studies in Kenya and Tanzania. FutureWater Report 183.X

      The business case for small hydropower schemes to invest in catchment management: two case studies in Kenya and Tanzania

      Simons, G.W.H., J.E. Hunink

    • 2018 - Climate Risk ManagementAmarnatha, G., G.W.H. Simons, N. Alahacoon, V. Smakhtin, B. Sharma, Y. Gismalla, Y. Mohammed, M.C.M. Andriessen. 2018. Using smart ICT to provide weather and water information to smallholders in Africa: The case of the Gash River Basin, Sudan. Climate Risk Management, 22, 52-66.X

      Using smart ICT to provide weather and water information to smallholders in Africa: The case of the Gash River Basin, Sudan

      Amarnatha, G., G.W.H. Simons, N. Alahacoon, V. Smakhtin, B. Sharma, Y. Gismalla, Y. Mohammed, M.C.M. Andriessen

    • 2018 - FutureWater Report 177Simons, G.W.H., M. Kruisheer. 2018. Agricultural Water Consumption in the Australian Border Rivers Catchment: a Preliminary Assessment. FutureWater Report 177.X

      Agricultural Water Consumption in the Australian Border Rivers Catchment: a Preliminary Assessment

      Simons, G.W.H., M. Kruisheer

    • 2017 - FutureWater Report 172Den Besten, N.I., J.E. Hunink, G.W.H. Simons. 2017. Water Productivity assessment using Flying Sensors and Crop Modelling: Pilot study for Maize in Mozambique. FutureWater Report 172.X

      Water Productivity assessment using Flying Sensors and Crop Modelling: Pilot study for Maize in Mozambique

      Den Besten, N.I., J.E. Hunink, G.W.H. Simons

    • 2017 - FutureWater Report 170Simons, G.W.H., N.I. den Besten, P. Droogers. 2017. A First-Order Water Productivity Assessment for the APROVALE Project, Mozambique. FutureWater Report 170.X

      A First-Order Water Productivity Assessment for the APROVALE Project, Mozambique

      Simons, G.W.H., N.I. den Besten, P. Droogers

    • 2017 - FutureWater Report 169Droogers, P., G.W.H. Simons, N.I. den Besten, J. van Til, M. de Klerk. 2017. Monitoring Water Productivity: Demonstration Case for ThirdEye Mozambique. FutureWater Report 169.X

      Monitoring Water Productivity: Demonstration Case for ThirdEye Mozambique

      Droogers, P., G.W.H. Simons, N.I. den Besten, J. van Til, M. de Klerk

    • 2017 - White paperSimons, G.W.H., A. Poortinga, W. Bastiaanssen, D. Saah, A. Troy, J.E. Hunink, M. de Klerk, M. Rutten, P. Cutter, L. Rebelo, L. Thanh Ha, V. Phuong Nam, T. Hessels, M. Fenn, B. Bean, D. Ganz, P. Droogers, T. Erickson, N. Clinton. 2017. On Spatially Distributed Hydrological Ecosystem Services - Bridging the Quantitative Information Gap using Remote Sensing and Hydrological Models. White paper published by FutureWater.X

      On Spatially Distributed Hydrological Ecosystem Services – Bridging the Quantitative Information Gap using Remote Sensing and Hydrological Models

      Simons, G.W.H., A. Poortinga, W.G.M. Bastiaanssen, D. Saah, A. Troy, J.E. Hunink, M. de Klerk, M. Rutten, P. Cutter, L. Rebelo, L. Thanh Ha, V. Phuong Nam, T. Hessels, M. Fenn, B. Bean, D. Ganz, P. Droogers, T. Erickson, N. Clinton

    • 2017 - FutureWater Report 166De Klerk, M., P. Droogers, G.W.H. Simons, J. van Til. 2017. Change in Water Productivity as a Result of ThirdEye Services in Mozambique. FutureWater Report 166.X

      Change in Water Productivity as a Result of ThirdEye Services in Mozambique

      De Klerk, M., P. Droogers, G.W.H. Simons, J. van Til

    • 2017 - FutureWater Report 163De Boer, F.S., M. de Klerk, G. Simons, P. Droogers. 2017. Pilot optimalisatie waterverdeling Hunze en Aa’s. FutureWater Report 163.X

      Pilot optimalisatie waterverdeling Hunze en Aa’s

      De Boer, F.S., M. de Klerk, G. Simons, P. Droogers

    • 2017 - eLEAF ReportAndriessen, M., G.W.H. Simons, R. Kassies, W. Terink. 2017. Slimme modelkoppeling voor betere actuele verdampingsschatting. eLEAF Report.X

      Slimme modelkoppeling voor betere actuele verdampingsschatting

      Andriessen, M., G.W.H. Simons, R. Kassies, W. Terink

    • 2017 - FutureWater Report 167Hunink, J.E., S. Contreras, G.W.H. Simons, P. Droogers. 2017. Hydrological Evaluation and Ecosystem Valuation of the Lukanga Swamps. FutureWater Report 167.X

      Hydrological Evaluation and Ecosystem Valuation of the Lukanga Swamps

      Hunink, J.E., S. Contreras, G.W.H. Simons, P. Droogers

    • 2017 - FutureWater Report 161Simons, G.W.H., J. Buitink, P. Droogers, J.E. Hunink. 2017. Impacts of climate change on water and sediment flows in the Upper Tana Basin, Kenya. FutureWater Report 161.X

      Impacts of climate change on water and sediment flows in the Upper Tana Basin, Kenya

      Simons, G.W.H., J. Buitink, P. Droogers, J.E. Hunink

    • 2017 - Remote SensingPoortinga, A., W. Bastiaanssen, G. Simons, D. Saah, G. Senay, M. Fenn, B. Bean, J. Kadyszewski. 2017. A Self-Calibrating Runoff and Streamflow Remote Sensing Model for Ungauged Basins Using Open-Access Earth Observation Data. Remote Sens., 9, 86, doi:10.3390/rs9010086X

      A Self-Calibrating Runoff and Streamflow Remote Sensing Model for Ungauged Basins Using Open-Access Earth Observation Data

      Poortinga, A., W. Bastiaanssen, G. Simons, D. Saah, G. Senay, M. Fenn, B. Bean, J. Kadyszewski

    • 2016 - FutureWater Report 159Simons, G.W.H., F. Heuff, P. Droogers, F. Witte. 2016. Ontwikkeling en demonstratie van een prototype informatieproduct voor natuurbrandbeheersing (SVIPE-W). FutureWater Report 159.X

      Ontwikkeling en demonstratie van een prototype informatieproduct voor natuurbrandbeheersing (SVIPE-W)

      Simons, G.W.H., F. Heuff, P. Droogers, F. Witte

    • 2016 - FutureWater Report 153Simons, G.W.H., F. Witte, P. Droogers. 2016. Satellietdatagebruik bij natuurbrandbeheersing: haalbaarheidsstudie naar de ontwikkeling van SWIPE. FutureWater Report 153.X

      Satellietdatagebruik bij natuurbrandbeheersing: haalbaarheidsstudie naar de ontwikkeling van SWIPE

      Simons, G.W.H., F. Witte, P. Droogers

    • 2016 - FutureWater Report 152Simons, G.W.H., P. Droogers. 2016. Verkenning van remote sensing producten voor het waterbeheer. FutureWater Report 152.X

      Verkenning van remote sensing producten voor het waterbeheer

      Simons, G.W.H., P. Droogers

    • 2016 - STOWA ReportSimons, G.W.H., P. Droogers. 2016. Verkenning van remote sensing producten voor het waterbeheer. STOWA Report 2016-17.X

      Verkenning van remote sensing producten voor het waterbeheer

      Simons, G.W.H., P. Droogers

    • 2016 - Remote SensingSimons, G.W.H., W.G.M. Bastiaanssen, L.A. Ngô, C.R. Hain, M.C. Anderson, G.B. Senay, 2016. Integrating Global Satellite-Derived Data Products as a Pre-Analysis for Hydrological Modelling Studies: A Case Study for the Red River Basin. Remote Sensing 8(4):279-306X

      Integrating Global Satellite-Derived Data Products as a Pre-Analysis for Hydrological Modelling Studies: A Case Study for the Red River Basin

      Simons, G.W.H., W.G.M. Bastiaanssen, L.A. Ngô, C.R. Hain, M.C. Anderson, G.B. Senay

    • 2015 - FutureWater Report 144Terink, W., A.F. Lutz, G.W.H. Simons, W.W. Immerzeel. 2015. SPHY: Spatial Processes in HYdrology. Case-studies for training. FutureWater Report 144X

      SPHY: Spatial Processes in HYdrology. Case-studies for training.

      Terink, W., A.F. Lutz, G.W.H. Simons, W.W. Immerzeel

    • 2015 - FutureWater Report 140Droogers, P., F.S. de Boer, M. de Klerk, G.W.H. Simons. 2015. Water Resources Model for Kenneti Basin South-Sudan. FutureWater Report 140X

      Water Resources Model for Kenneti Basin South-Sudan

      Droogers, P., F.S. de Boer, M. de Klerk, G.W.H. Simons

    • 2015 - FutureWater Report 137Simons, G.W.H., G.A.P.M. Van den Eertwegh, P. Droogers. 2015. Online Parcel-scale Irrigation management in Romania: spatio-temporal soil moisture modeling using SPHY. FutureWater Report 137X

      Online Parcel-scale Irrigation management in Romania: spatio-temporal soil moisture modeling using SPHY

      Simons, G.W.H., G.A.P.M. Van den Eertwegh, P. Droogers

    • 2015 - Geoscientific Model Development Terink, W., A.F. Lutz, G.W.H. Simons, W.W. Immerzeel, P. Droogers. 2015. SPHY v2.0: Spatial Processes in HYdrology. Geoscientific Model Development 8: 2009-2034X

      SPHY v2.0: Spatial Processes in HYdrology

      Terink, W., A.F. Lutz, G.W.H. Simons, W.W. Immerzeel, P. Droogers

    • 2015 - KWR ReportBartholomeus, R.P., G.W.H. Simons, G.A.P.H. van den Eertwegh. 2015. Anticipating on amplifying water stress: Optimal crop production supported by climate-adaptive water management. KWR Report 2015.062. June 2015.X

      Anticipating on amplifying water stress: Optimal crop production supported by climate-adaptive water management

      Bartholomeus, R.P., G.W.H. Simons, G.A.P.H. van den Eertwegh

    • 2015 - ReportVan Den Eertwegh, G., F. Witte, G. Simons, P. Hoefsloot, P. Droogers. 2015. Van SWIMM-methode naar NatuurVerdrogingsmonitor, Pilot voor drie Natte Natuur Parels in Noord-Brabant. X

      Van SWIMM-methode naar NatuurVerdrogingsmonitor

      Van Den Eertwegh, G., F. Witte, G. Simons, P. Hoefsloot, P. Droogers

    • 2015 - Geoscientific Model Development DiscussionsTerink, W., A.F. Lutz, G.W.H. Simons, W.W. Immerzeel, P. Droogers. 2015. SPHY v2.0: Spatial Processes in Hydrology. Geoscientific Model Development Discussions 8: 1687-1748X

      SPHY v2.0: Spatial Processes in Hydrology

      Terink, W., A.F. Lutz, G.W.H. Simons, W.W. Immerzeel, P. Droogers

    • 2015 - Journal of HydrologySimons, G.W.H., W.G.M. Bastiaanssen, W.W. Immerzeel. 2015. Water reuse in river basins with multiple users: A literature review. Journal of Hydrology 522: 558-571X

      Water reuse in river basins with multiple users: A literature review

      Simons, G.W.H., W.G.M. Bastiaanssen, W.W. Immerzeel

    • 2014 - Bachelor ThesisWehling, M., P. Droogers, W. Terink, G. Simons, S. Eeman. 2014. ONLine parcel oriented irrigation advice Romania. Optimization of agricultural water resource management by using the SPHY model. Bachelor Thesis Land and water management, Hydrology, Van Hall Larenstein University of Applied SciencesX

      ONLine parcel oriented irrigation advice Romania. Optimization of agricultural water resource management by using the SPHY model

      Wehling, M., P. Droogers, W. Terink, G. Simons, S. Eeman

    • 2013 - Advances in Data Mining, Workshop ProceedingsTerink, W., P. Droogers, J. van Dam, G. Simons, M. Voogt, A. Ines. 2013. Satellite based data mining to support Egypt's agriculture. Advances in Data Mining, Workshop Proceedings, ICDM 2013, pp. 171-180. ISSN 1164 - 9734. ISBN 978-3-942952-23-1X

      Satellite based data mining to support Egypt’s agriculture

      Terink, W., P. Droogers, J. van Dam, G. Simons, M. Voogt, A. Ines

    • 2012 - FutureWater Report 116Terink, W., P. Droogers, J. van Dam, G. Simons, M. Voogt. 2012. The added value of high-resolution above coarse-resolution remote sensing images in crop yield forecasting: a case study in the Egyptian Nile Delta. FutureWater Report 116X

      The added value of high-resolution above coarse-resolution remote sensing images in crop yield forecasting: a case study in the Egyptian Nile Delta

      Terink, W., P. Droogers, J. van Dam, G. Simons, M. Voogt

    • 2012 - FutureWater ReportSimons, G.W.H., W. Terink, H. Badawy, G.A.P.H. van den Eertwegh, W.G.M. Bastiaanssen. 2012. Egypt: Assessing the Effects of Farm-Level Irrigation Modernization on Water Availability and Crop Yields. X

      Egypt: Assessing the Effects of Farm-Level Irrigation Modernization on Water Availability and Crop Yields

      Simons, G.W.H., W. Terink, H. Badawy, G.A.P.H. van den Eertwegh, W.G.M. Bastiaanssen