Pieter van der Zaag

Professor of Integrated Water Resources Management


Pieter van der Zaag is professor of integrated water resources management at the IHE Delft Institute for Water Education in Delft, The Netherlands, and also holds a professorship at Delft University of Technology. He chairs the Water Management Group.

Pieter has worked in Africa and Mexico from 1982 to 2003. He has special interests in agricultural water management, water allocation issues in catchment areas and in the management of transboundary river basins, on which he has published widely. Pieter is fascinated by the dynamic relationship between biophysical and social processes when managing water, and in understanding patterns of cooperation over water.

The following are Pieter’s current main research interests:

  • The role of inequality and heterogeneity in enduring water institutions
  • Harnessing water by smallholders from nature-based storage in (semi-)arid regions in Africa
  • Water allocation tools in river basins – developing dynamic water value maps
  • Water allocation in large irrigation systems – supporting canal operators with mobile model predictive control and earth observation techniques.

Pieter has a track record of formulating and guiding major interdisciplinary research and capacity building projects, including in Ethiopia, Ghana, India, Kenya, Mexico, Mozambique, Senegal, South Africa, Sudan, Tanzania, Vietnam and Zimbabwe.

From 2003 until 2019 he was member of the governing board of WaterNet in Southern Africa. He is an associate editor of Water Policy, and member of the editorial board of Hydrology and Earth System Sciences. From 2012 to 2018 he chaired the Netherlands National IHP Committee.

Pieter van der Zaag studied irrigation at Wageningen Agricultural University, The Netherlands. From 1987 to 1989 he was based in Mexico. He received his PhD degree in 1992. From 1993 he coordinated a joint research programme between the University of Zimbabwe and Wageningen Agricultural University.

In 1997 he joined IHE Delft and was seconded to the Department of Civil Engineering, again at the University of Zimbabwe. The major activity involved the setting up of a new MSc programme in ‘Water Resources Engineering and Management’.

From 1999 to 2002, Pieter was the interim manager of WaterNet, a regional network aiming to build and strengthen regional capacity for the integrated management of water resources in the Southern African region through education, training and research.

In 2002 Pieter van der Zaag was appointed Professor of Water Resources Engineering and Management at the University of Zimbabwe. In 2004 he was appointed Professor of Integrated Water Resources Management at IHE Delft. From 2012 to 2015 he was the head of the newly formed Department of Integrated Water Systems and Governance.


Visit my private website.

Recent and on-going research projects

From the delta looking up...
In September 2018 we convened the high-level workshop entitled “From the delta looking up… Sharing lessons of downstream countries on transboundary water cooperation” held at the maritime MuZEEum, Vlissingen, The Netherlands. The outcome of this workshop was the Zeeland Call for Action; see https://www.un-ihe.org/news/sharing-lessons-downstream-countries-transboundary-water-cooperation

Water Peace and Security (Global)

The Water, Peace and Security Partnership - Enabling preventive action for water induced conflict is a pilot initiative to test whether it is possible to anticipate water-related human insecurity using and combining novel data and source. IHE Delft (leads), World Resources Institute WRI, Deltares, The Hague Centre for Strategic Studies HCSS, Wetlands International and International Alert (DGIS funded, 2018-2019). See https://www.un-ihe.org/news/water-peace-and-security-partnership.

Tekeze (Ethiopia), Mzingwane (Zimbabwe) and Limpopo (Mozambique)
A4Labs – Arid African Alluvial Aquifers Labs securing water for development; a new farmer-centred action-oriented research project; with Oxfam Novib, Acacia Water, Mekelle University, Dabane Trust, Oxfam Mozambique and other partners in Ethiopia, Mozambique and Zimbabwe; IHE Delft leads (DUPC2 funded; 2016-2019). 

Irrigation package for sand rivers, a feasibility study in the Mozambican Limpopo Delta - IPSARThis project is associated with the A4Labs project and initiated by Acacia Water, together with the Practica Foundation, Instituto Superior Politecnico de Gaza ISPG, Oxfam Mozambique and IHE Delft (PVO funded, 2018). 

Incomati (Mozambique)
Improved water efficiency control based on advanced remote sensing technologies - IWACA TECH. This action research couples Mobile Model Predictive Control techniques with Advanced Remote Sensing to improve water productivity in large scale open canal irrigation systems – piloted in Xinavane Sugar Estate, Mozambique. VanderSat (lead), with Tongaat-Hulett, Mobile Water Management, Eduardo Mondlane University, TU Delft and IHE Delft (PVO funded, 2018-2019). See www.IWACATECH.com.

Blue Nile

Accounting for Nile Waters: connecting investments in large scale irrigation to gendered reallocations of water and labor in the Eastern Nile basin; with IWMI, Hydraulics Research Centre Sudan, University of Khartoum, Forum for Social Studies Ethiopia, Research Institute for Sustainable Environment - American University in Cairo, National Water Resources Centre Egypt, Eastern Nile Technical Regional Office ENTRO (CGIAR funded – WLE Nile Basin and East Africa Focal Region). Preliminary findings are posted at http://nilewaterlab.org.

In Search of Sustainable Catchments and Basin-wide Solidarities; Transboundary Water Management of the Blue Nile River Basin; with IWMI, Addis Ababa and Khartoum Universities and Vrije Universiteit Amsterdam (NWO/WOTRO funded; 2008-2013). See also the NWO website: http://www.nwo.nl/en/research-and-results/research-projects/i/16/3816.html

Mau Mara Serengeti (MaMaSe) Sustainable Water Initiative; with  WWF Kenya, Kenya Water Resource Management Authority, Egerton University, Masai Mara University, Alterra, ITC, SNV, GIZ, Deltares

Upscaling small-scale land and water system innovations in dryland agro-ecosystems for sustainability and livelihood improvements; with University of Dar Es Salaam, Sokoine University of Agriculture, University of KwaZulu Natal, International Water Management Institute IWMI, Stockholm Resilience Centre and Delft University of Technology (UPaRF funded; 2009-2013); this is a sequel to the Smallholder System Innovations in Integrated Watershed Management project (SSI) (WOTRO, Sida and DGIS funded).

Mobile Water Monitoring in Mozambique - a cooperation project of ARA-Sul and Dutch partners; implemented with MobileCanalControl (lead) (Partners voor Water funded)

Power2Flow: Hydropower-to-environment water transfers in the Zambezi basin; in collaboration with Eduardo Mondlane University in Mozambique, WaterNet in Southern Africa and the Swiss Federal Institute of Technology (UPaRF funded; 2009-2013)

Water Planning tools to support Water Governance in Mozambique (WATPLAG) - a cooperation project of ARA-Centro and Dutch partners; implemented with FutureWater (lead) and Water Board Hunze and Aa’s (Partners voor Water funded) 

Water rights in informal rural economies in the Limpopo and Volta basins; led by IWMI; we are coordinating the Mozambique study (CP66; CGIAR Challenge Programme for Water and Food funded; 2008-2009). See http://waterandfood.org/2011/10/21/water-rights-in-informal-economies/

Managing risk, mitigating drought and improving water productivity in the water scarce Limpopo Basin; implemented by WaterNet (CP17; CGIAR Challenge Programme for Water and Food; 2004-2009); see the research page of www.waternetonline.org

Risk-based operational water management for the Incomati River Basin (RISKOMAN); with Eduardo Mondlane University, Komati basin Water Authority KOBWA, University of Kwazulu-Natal (UPaRF funded; 2009-2014).

Recent and on-going capacity building projects

Capacity Development at Agencia de Desenvolvimento do Vale do Zambeze and seven educational institutions in complementary IWRM Education and Training, Mozambique; implemented with TU Delft (lead), Wageningen University, KIT and Eduardo Mondlane University (Nuffic funded, 2017-2020) 

Developing Basin Plans for the Chambal and Sindh river basins - a Taylor-Made Training programme for the Water Resources Department of Madhya Pradesh, India (World Bank funded)

South Africa
Capacity Building for Integrated Water Resources Management in South Africa; with Cape Peninsula University of Technology and University of the Western Cape; implemented with Wageningen University (lead), ITC, IRC and Pegasys (Nuffic funded)

Capacity building in Integrated River Basin Management for Higher Education Institutions to support emerging River Basin Organisations; with Addis Ababa University, Wageningen University, MetaMeta and Vrije Universiteit Amsterdam (Nuffic funded; 2009-2012). See http://www.universitywatersectorpartnership.org/

Anticipating and resolving flood issues, differences and disputes in the Lower Mekong Basin – a capacity building programme for the Mekong River Commission (MRC funded; 2008-2009)

Capacity Building for Sustainable Development of Water Resources and Environmental Sanitation in Ghana and the Sub-Region; with KNUST (Nuffic funded; 2005-2009)

Southern Africa
WaterNet - Human Capacity Building in IWRM (phases I, II and III; 1999-2016); see www.waternetonline.org


PhD fellows

Recent PhD graduates

Current PhD fellows

  • Tobias Renner: Transboundary river basin management (with Sander Meijerink and Toine Smits, Radboud University).
  • Mohammad Gharesifard: Mapping the behavioural determinants of ICT-based citizen participation in water management (with Uta Wehn).
  • Jonatan Godinez Madrigal: Water allocation dilemma between two economic heartlands: the case study of Los Altos-Leon-Guadalajara interbasin water transfer (with Nora van Cauwenbergh).
  • Annelieke Duker: Evaluation of the robustness of irrigated farming systems along ephemeral rivers in Ethiopia and Zimbabwe (with Charlotte de Fraiture).
  • Anjana Ekka: Economics of river ecosystem: A hydroeconomic modelling approach to river basin management (with Yong Jiang and Saket Pande, TU Delft).
  • Afua Owusu: Improved reservoir operation policies for implementation of environmental flows (with Jill Slinger, TU Delft, and Marloes Mul).
  • Nadja den Besten: Improving water productivity in irrigated wetlands by utilizing field-scale satellite remote sensing evaporation estimates (with Susan Steele-Dunne, TU Delft, and Richard de Jeu, VanderSat)
  • Rozemarijn ter Horst: The politics of data in the context of water allocation processes in transboundary river basins (met Margreet Zwarteveen)


Profile on Google Scholar



Recent Journal Papers

  • Owusu, A., M. Mul, P. van der Zaag and J. Slinger, 2020. Re-operating dams for environmental flows: From recommendation to practice. River Research and Applications 2020:1-11 [doi.org:10.1002/rra.3624] [OPEN ACCESS]

    Gebremicael, T.G., Y. Mohamed, P. van der Zaag, K. Hassaballah and E.Y. Hagos, 2020. Change in low flows due to catchment management dynamics - application of a comparative modelling approach. Hydrological Processes 34 (9), 2101-2116 [doi:10.1002/hyp.13715] [OPEN ACCESS]

    Duker, A., C. Cambaza, P. Saveca, S. Ponguane, T.A. Mawoyo, M. Hulshof, L. Nkomo, S. Hussey, B. Van den Pol, R. Vuik, T. Stigter and P. van der Zaag, 2020. Using nature-based water storage for smallholder irrigated agriculture in African drylands: Lessons from frugal innovation pilots in Mozambique and Zimbabwe. Environmental Science and Policy 107, 1-6. [doi:10.1016/j.envsci.2020.02.010] [OPEN ACCESS]

    Bakhshianlamouki, E., S. Masia, P. Karimi, P. van der Zaag, J. Susnik, 2020. A system dynamics model to quantify the impacts of restoration measures on the water-energy-food nexus in the Urmia Lake Basin, Iran. Science of the Total Environment 708, 134874 [doi:10.1016/j.scitotenv.2019.134874]

  • Sifundza, L.S., P. van der Zaag and I. Masih, 2019. Evaluation of the responses of institutions and actors to the 2015/2016 El Nino drought in the Komati catchment in Southern Africa: lessons to support future drought management. Water SA 45 (4) 547-559 [doi:10.17159/wsa/2019.v45.i4.7535]
  • Birhanu, A., I. Masih, P. van der Zaag, J. Nyssen and X. Cai, 2019. Impacts of land use and land cover changes on hydrology of the Gumara catchment, Ethiopia. Physics and Chemistry of the Earth 112, 165–174 [doi:10.1016/j.pce.2019.01.006]
  • Gharesifard, M., U. Wehn and P. van der Zaag, 2019b. Context matters: a baseline analysis of contextual realities for two community-based environmental monitoring initiatives in Europe and Africa. Journal of Hydrology 579, 124144 [doi:10.1016/j.jhydrol.2019.124144]
  • Gharesifard, M., U. Wehn and P. van der Zaag, 2019. What influences the establishment and functioning of community-based monitoring initiatives of water and environment? A conceptual framework. Journal of Hydrology 579, 124033 [doi:10.1016/j.jhydrol.2019.124033]
  • Rap, E., and P. van der Zaag, 2019. Engaging with flows: embodied cognition in water provision. Water 11, 1751 [doi:10.3390/w11091751] [OPEN ACCESS]
  • Godinez-Madrigal, J., N. van Cauwenbergh, P. van der Zaag, 2019. Production of competing water knowledge in the face of water crises: Revisiting the IWRM success story of the Lerma-Chapala Basin, Mexico. Geoforum 103, 3-15 [doi:10.1016/j.geoforum.2019.02.002] [OPEN ACCESS]
  • Kahsay, T.N., D. Arjoon, P. van der Zaag, R. Brouwer, A. Tilmant and O. Kuik, 2019. A hybrid partial and general equilibrium modeling approach to assess the hydro-economic impacts of large dams – the case of the Eastern Nile River basin. Environmental Modelling and Software 117, 76-88 [doi:10.1016/j.envsoft.2019.03.007]
  • Gebremicael, T.G., Y. Mohamed, P. van der Zaag, A. Gebremedhin Berhe, G. Gebremeskle Haile, E. Yazew Hagos, and M. Kifle Hagos, 2019b. Evaluation of multiple satellite rainfall products over the rugged topography of Tekeze-Atbara Basin at different spatial and temporal scales. International Journal of Remote Sensing 40(11), 4326-4345 [doi:10.1080/01431161.2018.1562585]
  • Gebremicael, T.G., Y. Mohamed and P. van der Zaag, 2019a. Attributing the hydrological impact of different land use types and their long-term dynamics through combining parsimonious hydrological modelling, alteration analysis and PLSR analysis. Science of the Total Environment 660, 1155-1167 [doi:10.1016/j.scitotenv.2019.01.085] [OPEN ACCESS]
  • Kiptala, J., B. Laa, T. Hessels and P. van der Zaag, 2018c. An assessment of the value of an African landscape. The case of the Mara Basin, Kenya. Physics and Chemistry of the Earth 107, 71–85 [10.1016/j.pce.2018.09.009]
  • Kiptala, J.K., Y.A. Mohamed, M.L. Mul, W. Bastiaanssen and P. van der Zaag, 2018b. Mapping ecological production and benefits from water consumed in agricultural and natural landscapes - a case study of the Pangani Basin. Remote Sensing 10(11), 1802 [doi:10.3390/rs10111802] [OPEN ACCESS]
  • Renner, T., S. Meijerink, P. van der Zaag, 2018b. Progress beyond policy making? Assessing the performance of Dutch-German cross border cooperation in Deltarhine. Water International 43(7), 996-1015 [10.1080/02508060.2018.1526562]
  • Saraiva Okello, A.M.L., I. Masih1, S. Uhlenbrook, G.P.W. Jewitt and P. Van der Zaag, 2018b. Improved process representation in the simulation of the hydrology of a meso-scale semi-arid catchment. Water 10(11), 1549 [doi:10.3390/w10111549] [OPEN ACCESS]
  • Yalew, S.G., T. Pilz, C. Schweitzer, S. Liersch, J. van der Kwast, A.van Griensven, M.L. Mul, C. Dickens, and P. van der Zaag, 2018. Coupling land-use change and hydrologic models for quantification of catchment ecosystem services. Environmental Modelling and Software 109, 315-328 [doi:10.1016/j.envsoft.2018.08.029]
  • Digna, R.F., M.E. Castro-Gama, P. van der Zaag, Y.A. Mohamed, G. Corzo and S. Uhlenbrook, 2018b. Optimal operation of the Eastern Nile system using Genetic Algorithm and Benefits distribution of water resources development. Water 10(7), 921 [doi:10.3390/w10070921] [OPEN ACCESS]
  • Ha Nguyen, T., I. Masih, Y.A. Mohamed and P. van der Zaag, 2018. Validating rainfall-runoff modelling using satellite-based and reanalysis precipitation products in the Sre Pok catchment, the Mekong River Basin. Geosciences 8(5), 164 [doi:10.3390/geosciences8050164] [OPEN ACCESS]
  • Kiptala, J., M.L. Mul, Y.A. Mohamed and P. van der Zaag, 2018. Multi-objective analysis of the green-blue water uses in a highly utilized basin. Case study of Pangani Basin, Africa. Journal of Water Resources Planning and Management 144(8): 05018010 [doi:10.1061/(ASCE)WR.1943-5452.0000960]
  • Saraiva Okello, A., S. Uhlenbrook, G. Jewitt, I. Masih, E. Riddell and P. van der Zaag, 2018. Hydrograph separation using tracers and digital filters to quantify runoff components in a semi-arid meso-scale catchment. Hydrological Processes 32(10), 1334-1350 [doi:10.1002/hyp.11491]
  • Abdullah, A., M. Castro Gama, I. Popescu, P. van der Zaag, U. Karim, Q. Al Suhail, 2018. Optimization of water allocation in the Shatt al-Arab River under different salinity regimes and tide impact. Hydrological Sciences Journal 63(4), 646-656 [doi:10.1080/02626667.2018.1446213]
  • Digna, R.F.M.O., Y. Mohamed, P. van der Zaag, S. Uhlenbrook, G. Corzo, W. van der Krogt, 2018. Impact of water resources development on water availability for hydropower production and irrigated agriculture of the Eastern Nile Basin. Journal of Water Resources Planning and Management 144(5): 05018007 [doi:10.1061/(ASCE)WR.1943-5452.0000912]
  • Gebremicael, T., Y.A Mohamed, P. van der Zaag and E.Y Hagos, 2018. Quantifying longitudinal land use change from land degradation to rehabilitation in the headwaters of Tekeze-Atbara Basin, Ethiopia. Science of the Total Environment 622-623, 1581-1589 [doi:10.1016/j.scitotenv.2017.10.034]
  • Kahsay, T.N., O. Kuik, R. Brouwer and P. van der Zaag, 2018. The transboundary implications of trade liberalization and climate change on water resource availability and the economies of the Nile Basin countries. Water Resources Management 32(3), 935–947 [doi:10.1007/s11269-017-1847-7]
  • Renner, T., S. Meijerink and P. van der Zaag, 2018. The evolution of regional cross-border water regimes, the case of Deltarhine. Journal of Environmental Planning and Management 61(10), 1701–1721 [doi:10.1080/09640568.2017.1371005]
  • Susnik, J. and P. van der Zaag, 2017. Correlation and causation within 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] [OPEN ACCESS]
  • Kemerink-Seyoum, J.S., N.L.T. Chinguno, S.D. Seyoum, R. Ahlers, J.A. Bolding and P. van der Zaag, 2017. Jumping the water queue: changing waterscapes under water reform processes in rural Zimbabwe. Water SA 43(3), 423-432 [doi:10.4314/wsa.v43i3.07] [OPEN ACCESS]
  • Smit, H., R.M. Kassa, R. Ahlers and P. van der Zaag, 2017. The political morphology of drainage — How gully formation links to State formation in the Choke Mountains of Ethiopia. World Development 98, 231-244 [doi:10.1016/j.worlddev.2017.04.031] [OPEN ACCESS]
  • Rusca, M., A.S. Boakye-Ansah, A. Loftus, G. Ferrero and P. van der Zaag, 2017. An interdisciplinary political ecology of drinking water quality; exploring socio-ecological inequalities in Lilongwe's water supply network. Geoforum 84, 138-146 [doi:10.1016/j.geoforum.2017.06.013] [OPEN ACCESS]
  • Gebremicael, T., Y. Mohamed, P. van der Zaag and E. Hagos, 2017. Temporal and spatial changes of rainfall and streamflow in the Upper Tekeze–Atbara River Basin, Ethiopia. Hydrology and Earth System Sciences 21, 2127–2142 [doi:10.5194/hess-21-2127-2017] [OPEN ACCESS]
  • Abdullah A., I. Popescu, A. Dastgheib, P. van der Zaag, I. Masih and U. Karim, 2017. Analysis of possible actions to manage the longitudinal changes of water salinity in a tidal river. Water Resources Management 31(7), 2157–2171 [doi:10.1007/s11269-017-1634-5]
  • Kahsay, T., O. Kuik, R. Brouwer and P. van der Zaag, 2017. The economy-wide impacts of climate change and irrigation development in the Nile basin: a Computable General Equilibrium approach. Climate Change Economics 8(1) 1750004 [doi:10.1142/S201000781750004X]
  • Gharesifard, M., U. Wehn and P. van der Zaag. 2017. Towards benchmarking Citizen Observatories: features and functioning of online amateur weather networks. Journal of Environmental Management 193, 381–393 [doi:10.1016/j.jenvman.2017.02.003]
  • Digna, R.F.M.O., Y. Mohamed, P. van der Zaag and S. Uhlenbrook, 2017. Nile River Basin modelling for water resources management – a literature review. International Journal of River Basin Management 15(1), 39-52 [doi:10.1080/15715124.2016.1228656]
  • Ping, Neoh Siew, U. Wehn, C. Zevenbergen, P. van der Zaag, 2016. Towards two-way flood risk communication: current practice in a community in the UK. Journal of Water and Climate Change 7(4), 651-664 [doi:10.2166/wcc.2016.015]
  • Ceola, S., A. Montanari, T. Krueger, F. Dyer, H. Kreibich, I. Westerberg, G. Carr, C. Cudennec, A. Elshorbagy, H.H.G. Savenije, P. van der Zaag et al., 2016. Adaptation of Water Resources Systems to Changing Society and Environment - A statement by the International Association of Hydrological Sciences. Hydrological Sciences Journal 61(16), 2803-2817 [doi:10.1080/02626667.2016.1230674] [OPEN ACCESS] 
  • Abdullah, A., J.I.A. Gisen, P. van der Zaag, H.H.G. Savenije, U. Karim, I. Masih, and I. Popescu, 2016. Predicting the salt water intrusion in the Shatt al Arab estuary using an analytical approach. Hydrol. Earth Syst. Sci. 20, 4031–4042 [doi:10.5194/hess-20-4031-2016] [OPEN ACCESS] 
  • Kemerink, J.S., S.N. Munyao, K. Schwartz, R. Ahlers, P. van der Zaag, 2016. Why infrastructure still matters: unravelling water reform processes in an uneven waterscape in rural Kenya. International Journal of the Commons 10(2), 1055-1081 [doi:10.18352/ijc.646] [OPEN ACCESS] 
  • Boakye-Ansah, A.S., G. Ferrero, M. Rusca and P. van der Zaag, 2016. Inequalities in microbial contamination of drinking water supplies in urban areas. The case of Lilongwe, Malawi. Journal of Water and Health 14(5), 851-863 [doi:10.2166/wh.2016.258]
  • Yalew, S.G., A. van Griensven and P. van der Zaag, 2016. AgriSuit: a web-based GIS-MCDA framework for agricultural land suitability assessment. Computers and Electronics in Agriculture 128: 1-8 [doi:10.1016/j.compag.2016.08.008]
  • Yalew, S.G., M.L. Mul, A. van Griensven, E. Teferi, J. Priess, C. Schweitzer and P. van der Zaag, 2016. Land-use change modelling in the Upper Blue Nile Basin. Environments 3(3), 21 [doi:10.3390/environments3030021]
  • Abdullah, A.D., U.F.A. Karim, I. Masih, I. Popescu, P. van der Zaag, 2016. Anthropogenic and tidal influences on salinity levels and variability of the Shatt al-Arab River. International Journal of River Basin Management 14(3), 357-366 [doi:10.1080/15715124.2016.1193509]
  • Yalew, S.G., A van Griensven, M.L. Mul, P. van der Zaag, 2016. Land suitability analysis for agriculture in the Abbay basin using remote sensing, GIS and AHP techniques. Modeling Earth Systems and Environment 2(2), 1-4 [doi:10.1007/s40808-016-0167-x]
  • Tesfaye, A., R. Brouwer, P. van der Zaag and W. Negatu, 2016. Assessing the costs and benefits of improved land management practices in three watershed areas in Ethiopia. International Soil and Water Conservation Research 4, 20–29 [doi:10.1016/j.iswcr.2016.01.003]
  • Nyatsanza, F., S. Graas and P. van der Zaag, 2015. The impact of dynamic environmental flow releases on hydropower production in the Zambezi river basin. JAWRA Journal of the American Water Resources Association 51(4), 1029-1042 [doi:10.1111/jawr.12280]
  • Kahsay, T.N., O. Kuik, R. Brouwer and P. van der Zaag, 2015. Estimation of the transboundary economic impacts of the Grand Ethiopia Renaissance Dam: a computable general equilibrium analysis. Water Resources and Economics 10, 14-30 [doi:10.1016/j.wre.2015.02.003]
  • Abdullah, A.D., I. Masih, P. van der Zaag, U.F.A. Karim, I. Popescu and Q. Al-Suhail, 2015. Shatt al Arab River system under escalating pressure: a preliminary exploration of the issues and options for mitigation. International Journal for River Basin Management 13(2), 215-227 [doi:10.1080/15715124.2015.1007870]
  • Saraiva Okello, A.M.L., I. Masih, S. Uhlenbrook, G. Jewitt, P. van der Zaag and E. Riddell, 2015. Drivers of spatial and temporal variability of streamflow in the Incomati River basin. Hydrol. Earth Syst. Sci. 19, 657–673 [doi:10.5194/hess-19-657-2015] [OPEN ACCESS]
  • Van Eekelen M.W., W.G.M. Bastiaanssen, C. Jarmain, B. Jackson, F. Fereira, P. van der Zaag, A. Saraiva Okello, J. Bosch, P. Dyeh, E. Bastidas-Obando, R.J.J. Dost and W.M.J. Luxemburg, 2015. A novel approach to estimate direct and indirect water withdrawals from satellite measurements: A case study from the Incomati basin. Agriculture, Ecosystems and Environment 200: 126–142 [doi:10.1016/j.agee.2014.10.023] [OPEN ACCESS]
  • Fanaian, S., S. Graas, Y. Jiang and P. van der Zaag, 2015. An ecological economic assessment of flow regimes in a hydropower dominated river basin: The case of the lower Zambezi River, Mozambique. Science of the Total Environment 505: 464–473 [doi:10.1016/j.scitotenv.2014.10.033]
  • Plengsaeng, B., U. Wehn and P. van der Zaag, 2014. Data-sharing bottlenecks in transboundary integrated water resources management: a case study of the Mekong River Commission’s procedures for data sharing in the Thai context. Water International 39(7): 933-951 [doi:10.1080/02508060.2015.981783]
  • Sunday, R.K.M., I.Masih, M.Werner and P. van der Zaag, 2014. Streamflow forecasting for operational water management in the Incomati River Basin, Southern Africa. Physics and Chemistry of the Earth 72–75: 1–12 [doi:10.1016/j.pce.2014.09.002]
  • Worku, F.F., M. Werner, N. Wright, P. van der Zaag and S. Demissie, 2014. Flow regime change in an endorheic basin in Southern Ethiopia. Hydrol. Earth Syst. Sci. 18, 3837-3853 [doi:10.5194/hess-18-3837-2014] [OPEN ACCESS]
  • Muala, E., Y.A. Mohamed, Z. Duan and P. van der Zaag, 2014. Estimation of reservoir discharges from Lake Nasser and Roseires Reservoir in the Nile Basin using satellite altimetry and imagery data. Remote Sensing 6(8), 7522-7545 [doi:10.3390/rs6087522] [OPEN ACCESS]
  • Kiptala, J.K., M.L. Mul, Y. Mohamed and P. van der Zaag, 2014. Modelling stream flow and quantifying blue water using modified STREAM model for a heterogeneous, highly utilized and data-scarce river basin in Africa. Hydrol. Earth Syst. Sci. 18, 2287–2303 [doi:10.5194/hess-10-18-2287-2014] [OPEN ACCESS]
  • Tesfaye, A., W. Negatu, R. Brouwer and P. van der Zaag, 2014. Understanding soil conservation decision of farmers in the Gedeb watershed, Ethiopia. Land Degradation and Development 25(1), 71-79 [doi:10.1002/ldr.2187]
  • Savenije, H.H.G., A.Y. Hoekstra and P. van der Zaag, 2014. Evolving water science in the Anthropocene. In: M. Sivapalan, T.J. Troy, V. Srinivasan, A. Kleidon, D. Gerten, and A. Montanari (eds.), “Predictions under change: water, earth, and biota in the anthropocene.” Special issue. Hydrol. Earth Syst. Sci., 18, 319–332 [doi:10.5194/hess-18-319-2014] [OPEN ACCESS]
  • Van Koppen, B., P. van der Zaag, E. Manzungu and B. Tapela, 2014. Roman water law in rural Africa: the unfinished business of colonial dispossession. Water International 39(1), 49-62 [doi:10.1080/02508060.2013.863636] [OPEN ACCESS]
  • Gebremicael, T.G., Y.A. Mohamed, G.D. Betrie, P. van der Zaag, E. Teferi, 2013. Trend analysis of runoff and sediment fluxes of in the Upper Blue Nile Basin: a combined analysis of statistical tests, physically-based models, and landuse maps. Journal of Hydrology 482: 57-68 [doi:10.1016/j.jhydrol.2012.12.023]

Recent Book Chapters

  • Zwarteveen M., H. Smit, C. Dominguez Guzman, E. Fantini, E. Rap, P. van der Zaag and R. Boelens, 2018. Accounting for water: questions of environmental representation in a nonmodern world. Chapter 11 in S. Lele, E. S. Brondizio, J. Byrne, G.M. Mace, and J. Martinez-Alier (eds.), Rethinking Environmentalism: Linking Justice, Sustainability, and Diversity. MIT Press, Cambridge, MA; pp. 227-249.
  • Vishnudas, S., K.R. Anil, H.H.G. Savenije and P. Van Der Zaag, 2018. Use of Coir Geotextiles for Soil and Water Conservation: Case Studies from India. Chapter 9 in M.R. Goyal, S.S. Nambuthiri and R. Koech, Technological Interventions in Management of Irrigated Agriculture. Apple Academic Press, Oakville; pp. 162-209.
  • Kahsay, T.N., O. Kuik, R. Brouwer and P. van der Zaag, 2017. Economic impact assessment of the Grand Ethiopian Renaissance Dam under different climate and hydrological conditions. Chapter 8 in Z. Yihdego, A. Rieu-Clarke and A.E. Cascao (editors), The Grand Ethiopian Renaissance Dam and the Nile Basin, implications for transboundary water cooperation. Earthscan Studies in Water Resource Management. Routledge, London and New York, pp. 158-180.
  • Frerks, G., T. Dietz and P. van der Zaag, 2014. Conflict and cooperation on natural resources: justifying the CoCooN programme. In: M. Bavinck, L. Pellegrini and E. Mostert (eds.), Conflicts over Natural Resources in the Global South: Conceptual Approaches. CRC Press, New York; p.13-34 [available online http://www.nwo.nl/en/about-nwo/media/publications/wotro/cocoon-book.html] [OPEN ACCESS]
  • Khan, S. and P. van der Zaag, 2012. Allocating Water. Chapter 22 in the United Nations World Water Development Report 4: Managing Water under Uncertainty and Risk. Paris, UNESCO; pp. 517-532. [http://www.unesco.org/new/en/natural-sciences/environment/water/wwap/wwdr/wwdr4-2012/] [OPEN ACCESS]


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