Explore the vast range of titles available.

Since the mid-nineteen century, when the first mining companies were established in the region of Antofagasta to extract saltpeter, mining managers and civil authorities have always had to face a number of problems to secure a water supply sufficient for the development of industrial activities and society. The unique features of the region, namely the scarcity of rainfall, the high concentration of arsenic in freshwaters and the increasing pressure of the mining sector, have made the supply of drinking water for local communities a challenge. In the 1950s, the town of Antofagasta experienced a serious drinking water crisis. The 300 km long aqueduct starting from the Toconce catchment, opened in 1958, temporarily ended this shortage of drinking water but created an even more dramatic problem. The concentration of arsenic in the water consumed by the population had grown by approx. ten times, reaching the value of 0.860 mg/L and seriously affecting people’s health. The water treatment plants (WTPs) which were installed starting from the 1970s in the region (namely the Old and New Salar del Carmen in Antofagasta and Cerro Topater in Calama, plus the two recent desalination plants in Antofagasta and Tocopilla), have ensured, since 2014, that the drinking water coverage in the urban areas was practically universal (>99.9%). However, the rural areas have continued to experience significant shortcomings regarding their capacity to ensure the quality and continuity of the water supply service in the long run. Presently, approx. 42% of the rural population of the region of Antofagasta does not have a formal supply of drinking water. The recent amendments to the Chilean Water Code (March 2022) and the interventions carried out in the framework of the Agua Potable Rural (APR) program were intended to reduce the socio-ecological inequalities due to the lack of drinking water in the semi-concentrated and isolated rural population.

The paper proposes an analysis of the social–ecological resilience of the Limarí Basin, an agriculture-intensive dryland in the north of Chile, featuring one of the most innovative market-based water managements and the most active water rights market in the country, but concurrently affected by an ongoing water stress situation. The Chilean water market, one of the main examples of the application of neoliberal policies in water management, has received mixed appraisals although, at present, few empirical studies evaluate the social and environmental conditions associated with their operation. This paper, on the contrary, maintains the necessity to assess the capacity of market-based models to face situations of water stress, particularly since mega-drought phenomena are projected to become a recurring and increasing problem during the following decades because of climate change. The study offers a mixed bottom-up and top-down qualitative empirical analysis of how the Chilean water market operates, providing relevant insights into four dimensions of the social–ecological resilience of the watershed: redundancy, diversity and flexibility; connectivity, collaboration and collective action; social–ecological memory and learning; self-organization and governance of system changes. The conclusion is that water scarcity is self-produced: despite the flexibility provided by market-based water management, the combined effect of strong deregulation, of the absence of territorial planning and integrated management of water resources, and of short-term attitudes and generalized mistrust, has led the system to the critical situation it is now facing.

Chile’s neoliberal central water management gives shape to a series of conflicts arising from diverse understandings and ways of life linked to water. This article addresses the question of who is responsible for the ecological costs regarding water use of mining activity in the north of Chile. From the perspective of hydro-social territories, we analyze how the local population in Tarapacá is acting on unequal footing regarding environmental information and knowledge. Local and practical experiences are devalued against technical and scientific modeling, supported by legal and political definitions of “the environment” and “water”. Focusing on diverse local narratives, we show how the local population feels threatened by the environmental impacts of mining activity but struggles to find legitimate ways of articulating those anxieties to gain a sense of agency. We conclude that the local ecological consequences of extractivism in this region can only be understood in the context of the wider legal and economic framework regulating the appropriation of water as a resource and that long-term efforts in more participatory sociohydrological modeling might help to broaden the knowledge base for contested decision-making.

From the earliest times, Greek societies prepared legislation to solve disputes, define access to the water resources, and regulate waste- and storm-water disposal. On the one hand, evidence suggests that in Greek antiquity (750–30 bc), scientific progress was an important agent in the development of water management in some cities including institutional and regulatory issues. In most cities, it seems not to have been a prerequisite in relation to basic agricultural or household requirements. Previous studies suggest that judicial insight rather than practical knowledge of water management became a vital part of how socio-political and religious organizations dealing with water management functioned. The evidence indicates an interest in institutional matters, but in some instances also in the day-to-day handling of water issues. Thus, the aim of this review is to follow the development of water law and institutions and their technical solutions in the Greek states during the Archaic through the Roman periods. In addition, it demonstrates that the need for water management regulations is not a modern creation, but there is a long tradition of solving complex issues of water supply and use with rather sophisticated legal measures.

Globally, multiple stressors acting on large rivers strongly influence their ecosystem functions. They do so by altering both their biodiversity and integrity, which may in turn degrade the available ecosystem services. We present the catchment characteristics and discuss different management strategies for the two longest European rivers, the Volga (3531 km) and the Danube (2850 km). Subsequently, we analyze patterns and characteristics of fish fauna of the two rivers based on a review of historical and recent fish surveys. The native fish community of the Danube is characterized by rheophilic species, whereas the Volga has a similar proportion of rheophilic and eurytopic fish, with increasing portions of rheophilic species in the Lower Volga and the Volga Delta. We analyzed the species composition of certain regions of the Volga and the Danube and found a range of 0.515–0.667 for the Jaccard distance. Our review and comparison of fish communities and fisheries between these two largest river systems in Europe indicate that the additive effects of multiple stressors cause impacts on their fish communities. Integrated management taking into account these stressors is needed in order to preserve riverine fish diversity and enhance sustainable fisheries.

This article focuses on how water users perceive the state of water security and their concerns about water resources in Baguio City using survey data from 300 poor households. The financial and social aspects of the poor household's access to potable water are described before features of the Baguio Water Code on drinking water quality, water permits and groundwater extraction, and rainwater harvesting are tackled. The high expectations that accompanied the approval of this breakthrough legislation to address the city's long-standing water problems which were only partially met as the key provision on water permits remains unimplemented. Drinking water quality and rainwater harvesting have had some success in implementation. Still more needs to be done through measures that rely on the partnership of the local water utility and the city government offices in order to respond to the need of poor households for clean water.

A retrospective review of the current scientific publications on the problems of water protection zones at water bodies is given. The content of regulations on water protection zone in the RF Water Code 2006 now in force is interpreted. The legislations regarding the establishment of water protection zones and riparian buffer strips at water bodies in Russia and other countries are compared and analyzed. The technologies and specifics of the development of geoinformation system “Water Protection Zone and Riparian Buffer Strip of a Water Body” are demonstrated as applied to determining the boundary of the water protection zone and riparian buffer strip for the Uglich Reservoir. Assessment of the anthropogenic load onto a drainage basin within the water protection zone of the Uglich Reservoir and a method for geoecological zoning of its territory are considered as an example.

The proper management of water resources plays a key role in the socioeconomic development of Armenia. On average, Armenia has sufficient water resources. Taking into account all available water resources in the country, Armenia has sufficient resources to supply approximately 3,100 cubic meters per capita per year well above the typically cited Falkenmark water stress indicator of 1,700 cubic meters per capita per year. These water resources are not evenly divided in space and time with significant seasonal and annual variability in river runoff. In order to address temporal variations in river runoff, the country has built 87 dams with a total capacity of 1.4 billion cubic meters. Most of these dams are single purpose, mainly for irrigation. Armenia also has considerable groundwater resources, which play an important role in the overall water balance. About 96 percent of the water used for drinking purposes and about 40 percent of water abstracted in the country comes from groundwater. Irrigation remains the largest consumptive user.

This article presents the results of a study of the dynamics of the shorelines of Lake Ilmen and the Tsimlyansk Reservoir to indicate the location of the boundaries of the water protection zone. The study uses the method of processing information from Terra/MODIS, Landsat-7 and -8, and WorldView-1 space systems. The analysis of remote-sensing data reveal the off-season and yearly variability in the area of the surface and shoreline, which is characteristic of water bodies under flat relief conditions. On the basis of the results of the research, the issue of the necessity of allocating a water protection zone, taking into account the morphometric features of water bodies and the characteristics of their hydrological regime, followed by amendments to the Water Code of the Russian Federation, is posed.

Dianchi Lake is the largest freshwater lake on the Yunnan–Guizhou Plateau near Kunming City, China. As one of the most polluted lakes in China, although billions of U.S. dollars have been spent trying to clean it up, water pollution and eutrophication are still a bottleneck for regional sustainable development. This research established an integrated approach for the evaluation of the coupling coordination degree to support future planning of the Dianchi Lake basin. Ten future scenarios for possible development directions of Dianchi Lake basin were designed to find the best balance between development and protection. Among these scenarios, a high protection–medium development scenario is the most suitable scenario for future development planning. To further improve the coordination degree, economic growth control and non-point source governance were the most effective and feasible approaches. Furthermore, a water quality model was used to verify the coordination degree. It was found that the high protection–medium development scenario can reach the water quality target in 2025. The coordination degree evaluation could be a practical link to help equilibrate the socio-economic development and environmental protection of the Dianchi Lake basin.