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Okello, Aline M.L.Saraiva (author), Masih, Ilyas (author), Uhlenbrook, S. (author), Jewitt, Graham P.W. (author), van der Zaag, P. (author)The variability of rainfall and climate, combined with land use and land cover changes, and variation in geology and soils makes it a difficult task to accurately describe the key hydrological processes in a catchment. With the aim to better understand the key hydrological processes and runoff generation mechanisms in the semi-arid meso-scale...journal article 2018
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Kiptala, J.K. (author), Mul, Marloes L. (author), Mohamed, Yasir A. (author), van der Zaag, P. (author)The concept of integrated water resource management (IWRM) attempts to integrate all elements of water resources. Different tools are developed to assist in developing sound IWRM plans. One such tool is multiobjective analysis using an integrated hydro-economic model (IHEM). However, IHEM mainly deals with the optimization of river flow (blue...journal article 2018
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Digna, R.F.M.O. (author), Castro-Gama, Mario (author), van der Zaag, P. (author), Mohamed, Yasir A. (author), Corzo, Gerald (author), Uhlenbrook, S. (author)The Eastern Nile Basin is facing a number of transboundary issues, including water resources development, and the associated impacts. The Nile Basin, particularly the Eastern Nile Sub-basin, is considered as one of a few international river systems of potential conflicts between riparian countries. The Eastern Nile is characterized by the...journal article 2018
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Nguyên, Hà (author), Masih, Ilyas (author), Mohamed, Yasir A. (author), van der Zaag, P. (author)The limitation in quantity and quality of climate data, in particular rainfall measurements, directly affects the reliability of hydrological models, which negatively impacts on the quality of water resources planning and management. This is obviously true in poorly-gauged or in transboundary river catchments with limited practice of data...journal article 2018
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Digna, R.F.M.O. (author), Mohamed, Yasir A. (author), van der Zaag, P. (author), Uhlenbrook, S. (author), van der Krogt, Wil (author), Corzo, Gerald (author)The Eastern Nile riparian countries are currently developing several reservoir projects to contribute to the needs for energy and food production in the region. In the absence of formal mechanisms for collaboration, the transboundary nature of the Eastern Nile basin makes water resources development challenging. The large seasonal and...journal article 2018
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Abdullah, A.D.A. (author), Castro-Gama, Mario (author), Popescu, Ioana (author), van der Zaag, P. (author), Karim, Usama (author), Al Suhail, Qusay (author)Wastewater effluents from irrigation and the domestic and industrial sectors have serious impacts in deteriorating water quality in many rivers, particularly in areas under tidal influence. There is a need to develop an approach that considers the impact of human and natural causes of salinization. This study uses a multi-objective...journal article 2018
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Madrigal, Jonatan Godinez (author), van der Zaag, P. (author), Van Cauwenbergh, Nora (author)Mexico is considered a regional economic and political powerhouse because of the size of its economy, and a large population in constant growth. However, this same growth accompanied by management and governance failures are causing several water crises across the country. The paper aims at identifying and analyzing the drivers of water...journal article 2018
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Kahsay, Tewodros Negash (author), Kuik, Onno (author), Brouwer, Roy (author), van der Zaag, P. (author)A multi-country, multi-sector computable general equilibrium (CGE) model is used for the first time to evaluate the economic and water resource availability effects of trade liberalization (removal of import tariffs) and facilitation (reducing non-tariff barriers) under climate change in the Nile Basin. The analysis uses the GTAP 9 Database...journal article 2018
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Smit, H. (author), Muche, Rahel (author), Ahlers, Rhodante (author), van der Zaag, P. (author)To understand why soil erosion is persistent despite three decades of massive investments in soil conservation, this paper explores how drainage and soil conservation change a hill slope in the Choke Mountains. By paying close attention to the practices that reshape the hill, we account for the active roles of people and material flows in...journal article 2017
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Renner, T. (author), Meijerink, S (author), van der Zaag, P. (author)In this study, we look at the evolution of a cooperative water regime in the delta of the Rhine catchment. In a Dutch–German case study, we focus on cross-border cooperation on the local and regional scale, describing and analyzing how a remarkably resilient and robust transboundary water regime has evolved over the course of 50 years....journal article 2017
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Rusca, Maria (author), Boakye-Ansah, Akosua Sarpong (author), Loftus, Alex (author), Ferrero, Giuliana (author), van der Zaag, P. (author)Urban political ecology attempts to unravel and politicize the socio-ecological processes that produce uneven waterscapes. At the core of this analysis are the choreographies of power that influence how much water flows through urban infrastructure as well as where it flows, thereby shaping conditions and quality of access in cities. If these...journal article 2017
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Gharesifard, M. (author), Wehn, Uta (author), van der Zaag, P. (author)Crowd-sourced environmental observations are increasingly being considered as having the potential to enhance the spatial and temporal resolution of current data streams from terrestrial and areal sensors. The rapid diffusion of ICTs during the past decades has facilitated the process of data collection and sharing by the general public and...journal article 2017
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Gebremicael, T.G. (author), Abbas Mohamedali, Y. (author), van der Zaag, P. (author), Hagos, Eyasu Y. (author)The Upper Tekezē-Atbara river sub-basin, part of the Nile Basin, is characterized by high temporal and spatial variability of rainfall and streamflow. In spite of its importance for sustainable water use and food security, the changing patterns of streamflow and its association with climate change is not well understood. This study aims to...journal article 2017
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Kahsay, Tewodros Negash (author), Kuik, Onno (author), Brouwer, Roy (author), van der Zaag, P. (author)A multi-country, multi-sector computable general equilibrium (CGE) model is employed to evaluate the economy-wide impacts of climate change under the IPCC's A2 and B1 scenarios and existing irrigation development plans in the Nile basin. The study reveals that climate change adversely affects mainly downstream Egypt and to a lesser extent...journal article 2017
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Kemerink-Seyoum, J.S. (author), Chinguno, N. L.T. (author), Seyoum, S.D. (author), Ahlers, R (author), Bolding, J. A. (author), van der Zaag, P. (author)This paper contributes to the ongoing discussion on the implementation of water reforms in rural African waterscapes and explores how farmers in a tertiary catchment in Zimbabwe react to these reforms. It shows how privileged farmers have jumped the water queue by moving their agricultural activities upstream where they illegally divert water...journal article 2017
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Tesfaye, Abonesh (author), Brouwer, Roy (author), van der Zaag, P. (author), Negatu, Workneh (author)Unsustainable land use management and the resulting soil erosion are among the most pervasive problems in rural Ethiopia, where most of the country's people live, jeopardizing food security. Despite various efforts to introduce soil conservation measures and assess their costs and benefits, it is unclear how efficient these measures are from...journal article 2016
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Yalew, S.G. (author), Mul, Marloes L. (author), van Griensven, Ann (author), Teferi, Ermias (author), Priess, Joerg (author), Schweitzer, Christian (author), van der Zaag, P. (author)Land-use and land-cover changes are driving unprecedented changes in ecosystems and environmental processes at different scales. This study was aimed at identifying the potential land-use drivers in the Jedeb catchment of the Abbay basin by combining statistical analysis, field investigation and remote sensing. To do so, a land-use change...journal article 2016
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Kemerink, Jeltsje Sanne (author), Munyao, Stephen Ngao (author), Schwartz, Klaas (author), Ahlers, Rhodante (author), van der Zaag, P. (author)Since the 1980s, a major change took place in public policies for water resources management. Whereas before governments primarily invested in the development, operation and maintenance of water infrastructure and were mainly concerned with the distribution of water, in the new approach they mainly focus on managing water resources systems by...journal article 2016
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Abdullah, A.D.A. (author), Gisen, J.I.A. (author), van der Zaag, P. (author), Savenije, Hubert (author), Karim, UFA (author), Masih, I (author), Popescu, I (author)Longitudinal and vertical salinity measurements are used in this study to predict the extent of inland seawater intrusion in a deltaic river estuary. A predictive model is constructed to apply to the specific tidal, seasonal, and discharge variability and geometric characteristics of the Shatt al-Arab River (SAR) situated along the border of...journal article 2016
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Van Eekelen, M.W. (author), Bastiaanssen, W.G.M. (author), Jarmain, C. (author), Jackson, B. (author), Ferreira, F. (author), Van der Zaag, P. (author), Saraiva Okello, A. (author), Bosch, J. (author), Dye, P. (author), Bastidas-Obando, E. (author), Dost, R.J.J. (author), Luxemburg, W.M.J. (author)The Incomati basin encompasses parts of South Africa, Swaziland and Mozambique, and is a water stressed basin. Equitable allocation of water is crucial to sustain livelihoods and agro-ecosystems, and to sustain international agreements. As compliance monitoring of water distribution by flow meters is laborious, expensive and only partially...journal article 2014