Explore the vast range of titles available.

The River Chief System (RCS) in China plays a crucial role in addressing transboundary water pollution (TWP), which is vital for achieving the Sustainable Development Goal of \"clean water.\" This study examines the static and dynamic effects of the RCS on TWP using a difference-in-difference-in-differences (DDD) model and manually collected RCS data from 104 counties between 2007 and 2020. The results show that the RCS significantly reduces chemical oxygen demand (COD) by 15.9% and ammonia nitrogen (NH 3 -N) by 22.9% in border counties, though it has no notable impact on dissolved oxygen (DO). Additionally, RCS intensity contributes to a 13.8% reduction in COD. However, no sustained dynamic effects are observed for COD or NH 3 -N reduction over time. Several robustness checks confirm the validity of these findings. Heterogeneity analysis indicates that the RCS’s impact is more pronounced in counties with higher economic development, upstream locations, lower initial pollution levels, and younger local government leaders. This study not only provides critical insights for water resource management in China but also offers international relevance for addressing TWP governance challenges in transboundary water bodies.

Water plays a vital role in human socioeconomic development and overall well-being, making its effective management essential in achieving the Sustainable Development Goals. The close interlinkage between water, other environmental resources, and socioeconomic development have prompted the emergence and adoption of holistic and trans-sectoral concepts such as integrated water resources management and, more recently, the resource nexus. However, even such holistic approaches often exclude the one health approach, particularly at the transboundary water basins (TWBs), which not only dominate 40% of the earth but are vital in environmental and human sustainability. This review aimed to understand, evaluate, and compare assessment tools for water, energy, food, and one health (WEF + H) nexus management in TWBs. The review applied the systematic review guidelines for articles published in the Scopus database. The inclusion criteria encompassed English-language articles featuring case studies, meta-studies, or review articles with no less than three nexus resources. The review categorized the article based on criteria that focused on identifying tools capable of analyzing scenarios and policies for WEF + H in TWBs and their accessibility and easiness of implementation in case studies. Of the eighteen analyzed tools, 13 (72%) had limitations in their application at various geographical scales. Additionally, they could not integrate one health into the nexus or analyze policies through running scenarios. On the contrary, the Bayesian networks, system dynamics, agent-based models, life-cycle assessments, and input-output tools were highly accessible for efficiently conducting scenario-based WEF + H nexus assessments in TWBs.

Reservoir operation is an important and effective measure for realizing optimal allocation of water resources. It can effectively alleviate regional scarcity of water resources, flood disasters and other social problems, and plays an important role in supporting sustainable strategic development of water resources. Coordinating the stakeholders is key to the smooth operation of a multifunctional reservoir. This research examines the competition among stakeholders of a multi-objective ecological reservoir operation aiming to provide for economic, social and ecological demands. A multi-objective game theory model (MOGM) specified 10-day water discharge to meet the triple water demands (power generation, socio-economic consumption and environment) for multi-purpose reservoir operation. The optimal operation of the Three Gorges Reservoir (TGR), with the ecological objective of providing comprehensive ecological flow demanded for some key ecological problems that may occur in the middle and lower reaches of the Yangtze River, was chosen as a case study. Discharged water calculated by the MOGM and a conventional multi-objective evolutionary algorithm/decomposition with a differential evolution operator was then allocated to different demands. The results illustrate the applicability and efficiency of the MOGM in balancing transboundary water conflicts in multi-objective reservoir operation that can provide guidance for the operation of the TGR.

This study examines the connection between groundwater and surface water in the design of transboundary compacts. A steady‐state hydro‐economic model is developed and applied to a river basin in the United States. Simulations demonstrate that when a water compact is designed to govern only surface water, the assigned allocations are nonbinding and lead to decreased river‐flow in the downstream region. When the compact is designed to govern surface water and groundwater usage combined, however, the assigned allocations are binding and changes in them can increase overall net benefits, with the extent dependent on flexibility in compact design.

Transboundary collaboration between the United States (US) and Mexico in the Colorado River Basin has heightened in recent years, as climate change, population growth, and overallocation threaten the long-term stability of the region. Through a combination of document analysis and semi-structured interviews with key stakeholders, we examine patterns of change in the governance of the Colorado River, as the US and Mexico navigate socioeconomic, cultural, and political asymmetries to jointly share water over the past two decades. We ask: What key events and environmental agreements have influenced transboundary water governance in the Colorado River over the past 20 years? We draw on the rich scholarship on transboundary water governance, especially around international river basin organizations, to uncover patterns of engagement and collaboration over time. We focus on the binational scale with an eye to study governance at multiple scales including interactions and impacts at the national and subnational scales. Our findings illustrate how Mexico’s role has evolved from a narrow one following a strict interpretation of the 1944 Treaty toward a more creative partnership between the US and Mexico demonstrated in binational negotiations and the creation of joint solutions to emerging challenges around water conservation and ecological restoration. We find transboundary water governance in the basin is influenced by both long-term and short-term contextual changes that can inform strategies key actors employ to bolster institutional resilience and take advantage of opportunities for transformative change. Further, we find that the evolution of the binational relationship is reflected in changes in the negotiation process and structure, which highlights the importance of trust and relationship building, transparency, joint fact-finding, and information sharing to foster collaboration. However, we also find uneven institutionalization of stakeholder participation and transparency in engagement patterns that may ultimately, serve to hinder governance and cooperation in the basin.

Coordination on the management of transboundary waters is crucial for the development of riparian regions; nevertheless, lack of common legislation frameworks and communication channels jeopardize any cooperation among transboundary parties. The paper investigates the progress that has been conducted before and after the implementation of European Union’s common water policies in the management of transboundary surface waters and groundwaters shared between Bulgaria and Greece. To do so, the latest derivatives of the Water Framework and Flood Directives’ implementation process in both countries are analysed and processed to identify the quality and quantity (floods) of the surface waters’ status on the three transboundary river basins’ which are shared between the two countries, as well as the quality status of the groundwater bodies located in the boundary area. The outputs are compared with identified problems and pressures that were reported in the transboundary area before the operational implementation of the Directives. In terms of surface waters, the research demonstrates a remarkable amelioration of the inflows’ quality status to the downstream river basins. The most significant problem is induced floods due to transboundary waters, however the recent activation of a cooperation mechanism is a very promising engagement. Finally, it has been established that the transboundary groundwater bodies are of good status, but additional groundwater formations are proposed to be designated as transboundary ones. Concluding, legislative and technical aspects of the EU water Directives have significantly fostered shared waters management in the case study area, with the proposed methodological framework to be applicable in all EU’s shared waters.

While a substantial body of literature perceives rationality as the only path for negotiations over the use of the transboundary shared watercourse, recent scholarship has unveiled the role of emotion in decision-making processes over the use of the shared water. This research aims to challenge the conventional approach—rationality—by exploring affective dynamics of the riparian nations of the Helmand River (shared between upstream Afghanistan and downstream Iran) and how decisions over the use of the shared Helmand River are ingrained in the emotional dispositions of the riparian nations. Taking an integrated approach combining emotional political ecology and neoclassical realism, this research unravels the intricate emotional dynamics of the riparian nations to the flow of the Helmand River. The staggering increase in water withdrawal—both surface and groundwater resources— coupled with the population growth, and adverse effects of climate changes has stimulated the negative emotional dispositions of the borderland communities— the sufferings of farming communities due to lack of access to water—resulting in water conflict escalation in the Helmand River Basin. Finally, it is asserted that negotiations over the use of Helmand River are considered to be ill-equipped unless emotionality and rationality—a pluralistic approach— are equally weighed or gauged in water allocation and utilization by the co-riparian nations.

Complex challenges emerging in transboundary river basins reveal a need to include a range of interests and actors in governance processes. Polycentric governance is one framework that can address this need and inform adaptive and resilient governance processes in transboundary basins as linked social and ecological systems. Here, we explore whether and how nonstate actors might be contributing to a shift in governance toward polycentric systems for the Columbia River (Canada/USA) and the Lesotho Highlands Water Project (Lesotho/South Africa). Using data gathered from 60 in-depth interviews, our empirical results illustrate four governance themes relevant to the emergence of polycentricity in the case study basins: authority, flexibility, coordination activities, and information sharing. Although the emergence of polycentricity is limited by existing state-centric governance regimes, these regimes show evidence that polycentric traits are supplementing existing governance systems, influencing policy processes, and introducing a range of management values.

In this policy perspective, we outline several conditions to support effective science–policy interaction, with a particular emphasis on improving water governance in transboundary basins. Key conditions include (1) recognizing that science is a crucial but bounded input into water resource decision-making processes; (2) establishing conditions for collaboration and shared commitment among actors; (3) understanding that social or group-learning processes linked to science–policy interaction are enhanced through greater collaboration; (4) accepting that the collaborative production of knowledge about hydrological issues and associated socioeconomic change and institutional responses is essential to build legitimate decision-making processes; and (5) engaging boundary organizations and informal networks of scientists, policy makers, and civil society. We elaborate on these conditions with a diverse set of international examples drawn from a synthesis of our collective experiences in assessing the opportunities and constraints (including the role of power relations) related to governance for water in transboundary settings.

This paper presents a systematic assessment of transboundary water treaties and their institutional evolution over time. While the majority of treaties tend to remain unchanged, others are renegotiated over time, either gradually by treaty amendment or abruptly by treaty replacement. This study examines the sources of treaty amendment, treaty replacement, and renegotiation. Treaty design features, such as conflict resolution mechanisms and duration mechanisms, make up the set of independent variables. Effects are also measured for a set of control variables including the geographical configuration of a basin, the number of signatories, a history of interstate militarized disputes, water variability, the basin’s climate zone, and past renegotiations. Conflict resolution appears as a significant design feature for determining treaty stability, aided by asymmetrical basin configurations and bilateralism. The absence of conflict resolution is the main trigger for gradual change. The presence of a duration clause and a history of interstate militarized disputes are found to trigger abrupt change. Renegotiations become more likely after the first round of renegotiation, suggesting a temporal effect of path dependence on treaty evolution. This study adds to the work of scholars mapping transboundary basins at risk and provides further arguments to negotiate better and more specific treaties from the start, which include conflict resolution features that enable dialogue and rule modification while avoiding the need for formal treaty renegotiation.