Meta-analysis of human water behaviour underlying water use efficiency

Integrated Water Resources Management in Practice: Better Water Management for Development , R. Lenton and M. Muller ( Editors ). Earthscan , 22883 Quicksilver Dr., Sterling, Virginia 20166-2012 . 2009 . 228 pages. $78 . ISBN 978-1-84407-650-5 . This book is a welcome addition to the literature promoting integrated water resources management (IWRM). Robert Lenton and Mike Muller make a strong case for better management of water resources using the IWRM approach, widely recognized as the most appropriate way to address a wide range of water-related development and environmental issues confronting mankind today. The presentation of recent achievements and future possibilities in equitably and sustainably managing water resources toward meeting economic and social goals and insure environmental integrity in different parts of the world may be considered a benchmark that bodes well for further progress. The book begins with an introduction to the principles and practices of IWRM, which remain poorly understood, even in the water sector and development arena. This chapter also outlines the conceptual framework used in this book, which sets it apart from other publications. This includes a focus not only on processes in IWRM (e.g., changes in policy, laws, and organizational structures) but also the ultimate outcome and impact of using this approach, rendering the book as a much needed practical guide for planners and practitioners. The four spatially structured parts of the book take the reader from the local to the basin, national, and transnational levels. Twelve of the 14 chapters present case studies in East and Southeast Asia (five chapters), Africa and Latin America (two chapters each), and in Europe, North America, and Australia (one chapter each). The case studies document how better water management guided by the IWRM approach significantly contributed to achieve a large number of development goals in different communities and countries with different socioeconomic and environmental conditions and scales. While the editors duly acknowledge the challenge of deriving overall conclusions about what works and what does not work in different settings, they are able to succinctly and convincingly distill the various strands running through the book in the Conclusion. By considering the major objectives, processes, and outcomes of good water management, the management of water at different scales, and the nature of the IWRM approach itself in the context of the various chapter studies, they conclude that in all of the cases described the basic approach that was applied recognized the following elements: (1) the unitary nature of the water resource that recognizes the interconnectedness of surface, ground, and evaporated water, (2) the physical interventions that could be adopted to manage it, (3) the limits to those physical interventions, and (4) the need for an institutional framework that brought stakeholders together in an equitable manner and gave voice to both the weak and powerful, sought to achieve a balance of interests among them, identified the environmental dimension of water management and developed organizations able to promote the overall approach. The editors further note that these elements utilized in nearly all cases presented in the book were not considered to be explicit applications of the IWRM approach but rather began before the concept was formalized (as in India, Chile, Japan, Mexico, and China) or were incidental (in South Africa and Australia). These facts help to dispel the notion that IWRM is an unrealistic, overly ambitious approach and a fixed prescription that requires the employment of all available tools in its arsenal or a magic bullet. Similarly, the focus on individual tools has tended to hamper water management and the establishment of river basin organizations as a routine first step has played only a secondary role in improving water management in many cases (in South Africa and Chile, for example) and no role in others (Japan and Denmark). These findings strengthen the editors’ argument that IWRM offers a flexible and adaptable framework within which a wide range of water and development problems in different communities and countries can be addressed. Also highlighted in the Conclusion are remaining challenges in applying IWRM in practice. They include overcoming implementation difficulties at the macro-level; finding the proper mix of formal and informal mechanisms in operations; the need for more flexible as well as community-specific and system-wide planning and management rather than blueprint packages in many developing countries; and challenges for integration arising at the interface between water, sectoral, territorial, and organizational systems, particularly governance and participation issues at the international transboundary level. The writing style is lucid and captivating and the focus on real world examples rather than theoretical constructs captivate the inquisitive mind, making it difficult to put the book down. The few typographical errors do not detract from the quality of the presentation. Three relatively minor technical problems – the use of the same gray tones for different categories of water stress indicators in Figure 1.1 instead of using a color scheme, the poor print quality of this world map (all other figures in the book are excellent), and the weak binding I noticed on my paperback copy – should not detract from the intrinsic value of this well conceived and meticulously researched book. As a geographer interested in Third World water resources management and water-related health problems I enjoyed reading the broadly based case studies presented in this much needed book. Planners, water managers, researchers, and students will want to have a copy on their shelves for reference, guidance, and inspiration. Helmut Kloos Department of Epidemiology and Biostatistics University of California San Francisco, California 94134-0560 E-mail: helmutk@comcast.net The Sustainable Management of Groundwater in Canada , The Expert Panel on Groundwater . Council of Canadian Academies , 180 Elgin St., Ste. 1401, Ottawa, Ontario, Canada K2P 2K3 . 2009 . 253 pages . ISBN 978-1-926558-09-7 . I enthusiastically agreed to review this book, The Sustainable Management of Groundwater in Canada (Groundwater) penned by the Expert Panel on Groundwater (Panel) not only because I have a great interest in sustainability issues but also because I had heard much in the popular press about the Athabasca Oil Sands project and I hoped the Panel would discuss energy production and sustainable use of water – I was not disappointed on either count. I do not want to mislead the reader though –Groundwater covers a wide range of topics from governance to flow modeling to markets and case studies. Although Groundwater was written explicitly for or from a Canadian perspective, many if not all of the topics are applicable to work in other countries. Many of the authors that served on the Panel are instantly recognizable names with groundwater and hydrology experience garnered from across the globe (interestingly, but not surprisingly, many of these world renowned authors work in Canada); this breadth and depth of expertise helps to make Groundwater a relatively easy to read book especially given the complex nature of groundwater and sustainability. There are too many topics to discuss in detail in this review. Still, to give the reader a sense of this book, some of the salient topics are reviewed here. The Panel identified five sustainability goals to include protection of groundwater from depletion and contamination, protection of ecosystem viability, achievement of economic and social well being and application of good governance; these individual sustainability goals are envisioned as equal members in the schematic put forth by the Panel. This reader agrees that this pentad of sustainability goals should be implemented in future projects although if history teaches us anything, in practice, these goals might not enjoy equal strength or standing; the Panel offers case studies that illustrate the importance of the implementation of (or, sadly, as the case may be, lack of) sustainability goals. Part of the appeal of Groundwater is the ability of the Panel to explain abstruse concepts by the judicious use of footnotes and many well written topic-boxes. One such footnote on page 17 helps exemplify the pedagogical tenor of Groundwater and (a portion of this particular footnote) is well worth repeating here: “The precautionary principle seeks to encourage those undertaking projects to consider and address harm to the public or the environment even if the scientific consensus that harm will occur is unclear.” Unfortunately, it seems from some of the case studies discussed here, all too often, the precautionary principle has not been applied in many cases. An example of topic-box discussions is given on page 113, where the Panel expands on topics such as the Tragedy of the Commons and water. I cannot help but wonder if present day appropriation schemata, such as the doctrine of prior appropriation, riparian rights, correlative rights, rule of capture, etc., have helped to perpetuate the tragedy. Hopefully, some day soon, the Tragedy of the Commons will be relegated to a footnote in history. The Panel discusses many case studies to help illustrate the effects of climate change (Prairie Groundwater), population growth (Denver Basin), and energy production (Athabasca Oil Sands) on sustainable use of water. Groundwater incites some mental rumination (and this is why I am excited by this type of book) – each of these case studies could also be seen to show how climate change, population growth, and energy production also affect another timely topic – food production and economic security. It should be noted that the Panel briefly discusses bio-fuel production generally – presumably because this topic and technology is in an almost mercurial state of flux. However, probably one of the most important topics discussed in Groundwater concerns the use of “... economic instruments such as water prices, abstraction fees, and tradable permits...” to help manage water. This of course could be seen to be a point of contention in places where present day appropriation rules govern water allocations. Given the stressors that affect water such as climate change, population growth, and food and energy security, economic instruments might offer an attractive means to equitably manage water resources (to be fair the significance of these stressors might not have been recognized in earlier times when various appropriation rules were enacted). The Panel notes numerical modeling simulation studies that “...show a significant improvement in the efficiency of water allocation (relative to current allocations) as a result of water trades.” In the face of these changes in climate and population, it may be time to heed these tocsins presented in the various case studies and perhaps consider a retooling of management and regulations schema. In sum, The Sustainable Management of Groundwater in Canada, is an easy to read book written by an expert panel of world renowned water experts. The topics are fresh and timely and applicable both in Canada as well as other parts of the world. I am glad that I read the book and would suggest that it be included on a must-read list to colleagues. Kevin Jeffrey Spelts Twin Platte Natural Resources District, 302 S. Oak St., North Platte, Nebraska 69101 Fluvial Hydraulics , L. Dingman . Oxford University Press , 198 Madison Ave., New York, New York 10016 . 2009 . 559 pages . ISBN 978-0-19-517286-7 . I became familiar with Professor Dingman’s work when I used his Fluvial Hydrology (Dingman, 1984, now out of print) for my graduate work in channel morphology and sediment transport. Fluvial Hydraulics builds upon the geomorphology and fluvial hydraulics presented in Fluvial Hydrology, but Dingman’s new book includes more information on basic-fluid mechanics and a more extensive discussion of the characteristics of natural rivers. Dingman’s preface to Fluvial Hydraulics states that “The overall goal of this book is to develop a sound qualitative and quantitative understanding of the physics of natural river flows for practitioners and students.” That goal is most certainly met. Fluvial-hydraulics concepts, from basic hydraulic relationships to complex phenomena such as turbulence and hydraulic jumps, are clearly presented. The equation derivations are logical and fairly easy to understand. The figures and photographs are clear and complement understanding of the text. Examples and additional derivations are presented in boxes for the reader who is interested in a deeper understanding of the material. Dingman begins with an Introduction that describes volumes of water in the components of the hydrologic cycle and in the world’s largest rivers. The Introduction also includes a fascinating history of fluvial hydraulics and personalities that advanced the science. Chapters 2, 3, and 4 provide a foundation for the study of open-channel flow. In Chapter 2, Dingman discusses the morphologic and hydrologic characteristics of natural streams; in Chapter 3, he describes water’s atomic and molecular structure and other properties. Then, in Chapter 4, Dingman introduces the basic equations for fluid properties and hydraulic variables, including relationships based on the conservation of mass, momentum, and energy, and equations based on diffusion and force/balance relationships. Equations based on dimensional analysis and empirical and heuristic relations also are described. Chapters 5, 6, and 7 present relationships between velocity and flow resistance, the Prandtl-von Karman vertical-velocity profile, the Chezy, Darcy-Weisbach, and Manning’s equations, and magnitudes of driving and resisting forces in natural streams. The next two chapters discuss momentum and energy principles, equations for gradually-varied flow, and methods for calculating water-surface profiles. In Chapter 10, Dingman describes steady, rapidly-varied flow, including analysis of hydraulics at abrupt transitions and structures for discharge measurement. In Chapter 11, he discusses unsteady flow, including an excellent description of waves and prediction of wave depths and speed of travel. In Chapter 12, he discusses sediment entrainment and transport, including sediment-transport measurement, factors that dictate the shape of alluvial channel cross sections, and flow competence. Appendix A presents thorough discussions on dimensions, units, and numerical precision. In lieu of problems or exercises, Dingman provides online spreadsheets for flow databases, synthetic channel hydraulics, and water-surface profile computations. These spreadsheets are described in Appendices B, C, and D. I was unable to reach the website at the URL included in the text, but found the spreadsheets at this URL by searching the publisher’s website: http://www.oup.com/us/companion.websites/9780195172867/?view=usa. I was unable to find the links to other fluvial geomorphologic websites or discussion pages noted in the introduction. The book will be useful for an undergraduate-level or graduate-level class in channel hydraulics and morphology, for students with an understanding of basic calculus and university-level physics. For civil engineers, the book is a valuable companion to classic open-channel texts because it includes extensive discussions and applications focused on natural streams. For researchers, practitioners, and students in the natural-resources sciences, the book provides clear and complete discussions of open-channel flow that do not require a theoretical background in fluid mechanics to understand. This book will spend more time on my desk than on my shelf; I will refer to it often. Katherine J. Chase, PE 541 Diehl Dr. Helena, Montana 59601 The World’s Water: 2008-2009, The Biennial Report on Freshwater Resources , P.H. Gleick with H. Cooley , M.J. Cohen , M. Morikawa , J. Morrison , and M. Palaniappan . Island Press , 1718 Connecticut Ave. NW, Ste. 300, Washington, D.C. 20009 . 2008 . 402 pages. $35 . ISBN 978-1-59726-505-8 . The First Biennial Report on Freshwater Resources for the world by Peter H. Gleick was issued in 1998. The Sixth Biennial Report by Peter H. Gleick and his associates is the latest version and covers the period 2008-2009. The series continues to be an invaluable collection of all kinds of water-related material, ranging from concise stand-alone chapters on important topics to numerous sections of data that have been updated as much as possible given the mix of reporting countries. A sampling of some of the six discussion chapters that are at the beginning of the book of 402 pages should provide the reader a good sense of the nature of the material. The first chapter by M. Palaniappan and P. H. Gleick on “Peak Water” provides an interesting discussion of the similarities and differences between oil and water. The importance of ocean water desalination is that the amount is unlimited, but the problem is how much we are willing to pay for it. In areas where water is really scarce, such as selected islands in the Caribbean and certain parts of the Persian Gulf, desalination is already becoming an “economically competitive alternative.” Chapter 2 on “Business Reporting on Water” by M. Morikawa, J. Morrison, and P. H. Gleick provides a useful accounting of corporate reporting of non-financial environmental information in annual reports that started in the 1970s. These non-financial reports have grown from fewer than 50 in 1992 to over 1,900 in 2005 and 2,470 by 2007. As expected, water management and use reporting by major corporations vary from industry to industry. In addition, and regrettably, most corporations rarely report on water recycling and reuse. The next chapter by H. Cooley deals with water management in a changing climate. A sampling of some of the water resource issues associated with climate change include the following: (1) climate change will affect the quantity and timing of surface runoff, (2) groundwater is less understood than surface water and sea level rise could result in greater saltwater intrusion in coastal aquifers, and (3) agriculture accounts for 70-80% of global water use and lawns in hot, dry areas can account for 70% of total residential water use. Even in developed countries, water infrastructure that was designed and operated on historic water conditions may become a problem in the future. In 2002, 1.1 billion people did not have access to improved water supply and 2.6 billion did not have access to improved sanitation. Of particular interest is the section from pages 151-193 by P. H. Gleick pertaining to the chronology of water conflicts from Noah’s flood of about 5,000 years ago to fights between animal herders and farmers in Burkina Faso, Ghana, and Cote D’Ivoire in 2007 in the Sahel region of West Africa just south of the Sahara Desert. a description of the of the the and the It is clearly a valuable on the world history of water conflicts that are not in number and of this book is the of that on pages A sampling of these data include information on water and use by data on access to water and updated on in Africa and the information on in five years of from water-related and data on the of water in selected countries and In this book is as an excellent of information on the world’s It is well and includes an extensive on a of water-related It is a for interested in the water resource Robert M. Water Resources New A of the of 2008 , ( ). University of Press , . . pages. . ISBN . In the of their to of their and the of their rise and of and of By a of scientific and technical information presented with and a of the to this book, many of with the 2008 provide a of the and effects of future The book the relationships among and of and rather than social or issues are Introduction to and , R. . University Press , of the New York, New York . . pages. ). ISBN . The was written for students who are coastal The important processes to are equations that or from the instruments used to map these processes are presented. are The book is Introduction (two (five and chapter includes a reading list and but not problems to be used as The figures and are clear and well and for in , J. , J. , , and J. ( Editors ). Press , . 2009 . pages. . ISBN . to water, and are a in developing countries, with many by water and and This document provides on water, and in The are designed to be used in in and countries, and to the development of for the , University of California Press , California . . pages. . ISBN . An ecosystem in a water supply for and an of – this is the the major of water by a of water this based on the latest to the economic and the authors find that a as of a and management to be the both for a quality water supply and for improving conditions for and in Water for Sustainable Development , L. and ( Editors ). , Virginia . . pages. . ISBN . As water the world are in of better to manage water The of this book is to provide a new approach for the analysis and of water that govern the use and development of water particularly for which is the largest The authors present empirical with detail analysis of the data for the of and and of water management that are to resource The book includes and for Sustainable , H. ( ). Press , St., . . pages. . ISBN . This book provides a discussion of the importance of and governance in the and provides examples from the world of how and instruments have been to the development of sustainable how they have and what factors have or it how issues such as bio-fuel production and energy the The book will be useful to researchers, and environmental and , . University Press , of the New York, New York . . pages. . ISBN . This book provides a concise introduction to the and of the including the of sea water and the of the ocean an of including the water and the and the between the and the to help the reader a clear mental of the physical principles it is invaluable for advanced in ocean and as a for and other

Colorado River Basin faces a supply crisis that makes the water system vulnerable to failure, economic losses, conflicts between regions and water users, and ecosystem degradation. The crisis results from water management that allows excessive water withdrawals, legal restrictions established on historical facts, and decreased water availability due to climate change. The agricultural sector, urban centers, hydropower production, and aquatic ecosystems compete for the exhaust water resources in the basin. Despite the reduction in per capita urban water usage and reduction of irrigated land, projections of population and economic growth and increasing crop evapotranspiration indicate an expansion of water demand. The shrinking water availability and growing demand for water will exacerbate existing problems, hampering water management. This article evaluates several alternatives to water management to identify the sectoral and spatial trade-offs of water use by the agricultural sector, urban centers, hydropower production, and aquatic ecosystems. A hydro-economic model is developed to assess current and alternative water allocation’s economic impact on drought, climate change, and growing population. The model examines coalition arrangements among some or all basin states, Tribal Nations and Mexico and the implementation of institutional reforms such as water markets, proportional sharing, and mechanisms that promote water savings. The development of existing but unused Tribal Nation rights is analyzed to evaluate its impact and to determine the potential for new agreements. Simulation shows that shrinking water allocation promotes efficiency improvements and strengthens the sustainability of the water system. However, droughts and climate change erode the benefits of water use and environmental conditions. Reductions in hydropower generation results in economic losses and higher greenhouse gas emissions. Urban centers endure heavy welfare reductions due to water use restrictions, but purchasing water from irrigation districts alleviates the burden and enhances the social surplus. Water markets and cooperation mitigate benefit losses but increase the pressure on ecosystems. Water exchange and side payments (for improved water savings) between states and irrigation districts indicate potential improvements in water use efficiency. Crops with high economic value that are irrigated with advanced technologies are maintained in production. Instead, field crop producers suffer from water shortages. Improvements in irrigation technology reduce the risk of exposure to water scarcity but curtail water returns than sustain ecosystems and downstream activities. Maintaining tribal Nations' rights and establishing environmental flows rectify the inefficient use of water by other users.

Environmental policies are characterized by a growing emphasis on participation, devolution and negotiated decision making. Increasingly, centralized top down decision making systems are being replaced by new forms of local governance. In their strongest versions, these involve delegation of formal authority to local stakeholders who are expected to decide collectively upon the management rules of local common-pool resources. Devolution is particularly important in relation to the allocation and management of scarce water resources. Indeed the French water law of 1992 institutionalised the notion of devolution by requiring that water management rules be negotiated at the river basin level between all stakeholders. Although stakeholder negotiation is becoming increasingly important, relatively little is understood about the influence of the structure of negotiations on their outcomes. There is therefore a rising demand for applied simulation models which can be used as 'negotiation-support tools' to address such questions as: what criteria should determine participation rules? What kind of biases result from power asymmetries? In this paper, we apply the Rausser-Simon (RS) framework to a specific negotiation process, involving water use and storage capacity. The RS framework is a computable non cooperative bargaining model designed to study complex real world multi-agent, multi-issue negotiation problems. The elements of the modelled negotiation structure include: the list of participants at the bargaining table; the set of issues being negotiated; the decision rule; political weights ("access"); and the nature of the outcome if agreement cannot be reached (the fall-back option). The application we consider focuses on the upper part of the Adour Basin in south-western France. In- creased irrigation use in recent years has led to recurrent water shortages, resulting in increased tensions among water users and potential damages to aquatic life. Public authorities have offered to finance new water supply facilities provided that stakeholders can agree on management issues such as quota allocations, water prices and dam configuration. A number of issues arise concerning the relationship between the structure of the negotiating process and the effectiveness with which participating stakeholders can pursue their individual interests. The case study is modelled with seven aggregate players (three aggregate farmers representing three sub-basins - upstream, midstream and downstream - two environmental lobbies, the taxpayer and the water manager), and with up to nine negotiated variables (water quotas and water prices in each sub- basin, and the capacities of three dams). Farmers' utility functions are estimated using hydraulic data and calibrated linear programming farm models. The richness of the data and institutional information available to us provides a realistic environment in which to examine the effect of negotiation structure on participant power. We focus in particular on the three farmer stakeholder group, whose interests are aligned but distinct, and so form a natural negotiating coalition. We construct experiments that enable us to evaluate the effects of negotiation structure on the effectiveness of this coalition. Our comparative statics experiments highlight a number of aspects of the relationship between negotiation structure and bargaining power. In addition to the standard indices of bargaining power - the distribution of access and "default strength" (i.e., stakeholders' relative tolerance for the outcome if negotiations break down) - our analysis identifies a number of other less obvious sources of power. A coalition member can advance his own interests by ceding his own political access to another coalition member who has a "better" strategic location. It is also shown that while the interests of the coalition as a whole will be advanced if its members cede access to a "spokesman" representing their common interests, some coalition members may be adversely affected. Finally, we consider the effect on the coalition of restricting the set of proposals that may be placed on the bargaining table in order to mitigate "beggar thy neighbour" behaviour by coalition members. This improves all farmers' utilities, except in some specific cases in which external constraints initially oblige players to act as if they were playing cooperatively. In conclusion, the value of this model is to be used by the negotiation stakeholders to explore the implications of alternative specifications of 2 the bargaining environment. In particular, the simulations reveal that the ways in which the negotiation structure interact with stakeholder bargaining power are complex and lead to non intuitive outcomes.

The influence of psychological, social and contextual factors on recovery following a sport-related knee injury: a scoping review

The overall goal of our article is to better understand which matters for water savings, farmer income and poverty in China's irrigation systems: incentives to managers or participation of farmers. To pursue this goal, the article has three objectives. First, we track the evolution of water management reform, examining the practice of providing incentives to managers, and increasing the participation of farmers. Second, we identify the impact of water management reform on crop water use. Specifically, we want to measure whether or not incentives to managers and farmer participation in water management institutions affect the performance of the irrigation system. Because we also are interested in the potential results of water management reform, the article explores how changes in incentives and farmer participation affect farmer income and poverty. Based on a random sample of 51 villages and 189 farmers in four large irrigation districts in Ningxia and Henan provinces, both in China's Yellow River Basin, our results show that the two major forms of water management reform, water users' associations (WUAs) and contracting, have begun to systematically replace traditional forms of collective management. Our analysis demonstrates, however, that it is not the nominal implementation of the reform that matters, but rather it is the creation of new management institutions that offer water managers monetary incentives that lead to water savings. In contrast to the original design of China's reform policies, participation of farmers has not played a role in saving water. Importantly, given China's concerns about national food production and poverty alleviation, the reductions in water, at least in our sample sites, do not lead to reductions in income and do not increase the incidence of poverty.

The COVID-19 pandemic, with confinement of the population and zero-tourism period, allowed us to assess, for the first time, the volume of water used (both directly and indirectly) by the tourism sector. This research fills a gap in water management, assessing the decrease in water consumption during the lockdown period, which coincided with the tourist season, comparing 2019 and 2020 in the Balearic Islands (Spain). Results demonstrate important differences among nine municipalities, depending on their ratio between overnight stays of tourists and total population. Water consumption decreased 58%, 40% and 14% for high, medium and low tourist areas, respectively, during the lockdown period. Extrapolation to the whole Balearic Islands gives an overall decrease of 24.2%, which can be considered the percentage of water directly used by tourism. The estimated water volume directly consumed by tourism is similar to the amount of groundwater used by irrigation agriculture. These results can be useful for water managers and policymakers in revising the hydrological plan during the third management cycle, which has not yet quantified water consumption by the tourism sector. Policymakers should focus on the touristic municipalities with higher water demand and support policies to reduce the water consumption during the tourist season.

This chapter outlines the ways in which gendered roles and relationships shape the processes and outcomes of water resource management. It locates this discussion in the context of water management policies over the past decades, especially the realisation that improved water management cannot be achieved by technical means alone and the consequent shift towards a recognition of the role of women as water users and managers. This has, however, led to the assumption that involving women in decision-making and in operation and maintenance of water supplies ensures more effective water management and more equitable outcomes. The body of literature around water management discourse and practice, on the other hand, shows that, while gender has been nominally 'mainstreamed' into international policy making, its translation into practice has been constrained. Policy and practice have barely recognised the complexity of gendered water relations and the tenacity of social barriers that perpetuate unequal access and benefits. This chapter sets out key issues in understanding the gendered nature of water resource management, illustrates the intersection of gender and poverty, and offers some examples of promising directions in overcoming inequalities.

Evaluation and analysis of water usage and loss of power in plants with CO2 capture

Facing pressures to contend with continual changes in physical availability, to balance water supply with environmental and social impacts, and to build resilience to environmental hazards such as droughts and climate change, water managers increasingly use management plans as a blueprint for managing water. We apply qualitative content analysis to evaluate water management plans from diverse water and land use organizations in California’s Central Valley. To understand whether plans are working toward holistic, multi-dimensional management, we assess plans’ coverage of water supply, environmental, and socioeconomic dimensions of water use, as well as the quality and implementability of the plans. The plans provide a strong assessment of water supplies and indicate progression toward integrated water resource management. However, we identify gaps in managing water for the environment, considering socioeconomic and distributional impacts, planning for future drought and climate change, and effective coordination with other water agencies and the public.

The study navigates how circular economy (CE) principles can be applied to water and waste management to address critical issues like water scarcity and practicing sustainability at an age marked by consumption of water, ignoring the consequences of contaminated water. The purpose of this study is to examine recycling at a household (individual) level and industrial wastewater treatment practices to improve water use and reduce discharge of toxic waste. Adopting a circular approach in water management compels one to accept waste water as a reusable and recyclable resource. This paper focuses on analysing recent methods, economic factors, and technological advancements that influence CE adoption in water management and preservation strategies. The existing literature indicates that domestic water recycling techniques, such as utilising grey water for irrigation, may drastically reduce the need for freshwater and support sustainable water management at a large scale. However, when it comes to industry level, there are far more complex issues involved in the treatment of water due to existence of harmful contaminants in wastewater, such as heavy metals and chemical pollutants, which are usually not present in the wastewater discharged by households. In order to properly recycle industrial wastewater, support resource efficiency and minimise the environmental impact of industrial operations, treatment techniques such as improved filtration, biological treatment, and detoxification have proved to be efficient. However, the high cost and complexity imposed by these technologies often limits their wider adoption, especially for small and medium sized businesses and at places where water resources are scarce. One can reduce the amount of impurities added to water during industrial processes, if the individuals build the habit of computing carbon footprint of the products they are willing to purchase, this will motivate the producers to manufacture eco- friendly products with low carbon footprints, this will help in preserving potable water. Whereas at the domestic level, rainwater collection and grey water reuse can be achieved with minimal investment. This review paper also identifies a number of research gaps, such as economic studies of water recycling systems are not common, particularly when it comes to cost- benefit analysis for low-income households and small businesses. Also, there is still a dearth of research on low-energy methods for treating industrial wastewater, which puts smaller businesses at a disadvantage when it comes to implementing CE standards. The lack of comprehensive legislative framework demotivates businesses and households to engage in waste water management and then, water recycling becomes another concern. Furthermore, studies do not indicate a lot about the social aspects that would affect the adoption of CE in water usage, thus emphasising the need for observing community participation and awareness campaigns.

<p>The International Commission on Irrigation and Drainage (ICID) was set up in 1950, with support from 11 countries as Founder Members, including Italy. Ital-ICID is the Italian National Committee of ICID founded in 1971, and is a scientific, technical, and professional not-for-profit organization working in the field of irrigation, drainage, land reclamation, and flood management, in accordance with the topics of the International Commission.</p><p>In this moment the environmental protection and the green economy are a very important goals, in this contest the ICID promotes and achieves equitable and sustainable development in agriculture water management. The actions of ICID are dedicated to improving the status of agricultural water management practices including rain-fed agriculture, supplemental irrigation, deficit irrigation and full irrigation, with a particular attention to the areas involved in extreme climate events, such as flood and droughts. ICID approach suggests cooperation rather than competition, and collaboration rather than individual actions to pave the way towards effective water management for securing the right of each and every individual to attain a fair share of water, food, energy, and stressed on the need to promote environment-friendly traditional wisdom.</p><p>ICID develops many annual and special publications promoting its activities, but “Irrigation and Drainage Journal” is the official international journal, and the flagship publication of ICID. It is a prestigious, peer-reviewed specialized publication that publishes papers on all scientific, technical, environmental and socio-economic issues associated with irrigation, drainage and flood management. The journal covers a wide range of subjects centering on dissemination of experience and new ideas in the quest for the sustainable use and protection of water and land to meet the World's increasing demand for food. Only in the last issues more than ten papers have been published concerning study on arid and semi-arid area, which involve the human intervention in the control of water for sustainable agricultural development.</p><p>For the future, ICID works towards enabling balance between agricultural and water policies, improving publicly operated irrigation schemes, advocating increased public and private investment in expansion of irrigated land, and modernizing existing infrastructure. The knowledge-based sharing of all aspects of agricultural water management, including collation of irrigation statistics, data and information exchange, sharing of successful management strategies, best practices, and local community involvement will be supported by ICID. It supports and encourages the multiple use of water, the use of non-conventional waters and the promotion of goods and services provided by irrigation systems, also supported by Information and Technology Communication tools. The cooperation mechanisms in ICID’s network are based on simple exchange of information through annual meetings, where practitioners, researchers and planners from all over the world share latest research and innovations. However, ICID also organizes triennial world irrigation and drainage congresses, world irrigation fora, regional conferences and workshops to address and discuss agricultural water management issues at global or regional level.</p>

Purpose: The aim of this research is to assess the irrigation water management performance of two irrigation schemes administrations in the River Nile State (RNS) of Sudan based on two different options of irrigation system which are mandatory from the River Nile by pumps.Methodology: The analysis was based on structured survey questionnaires, field observations and literature from Elzeidab scheme where surface irrigation is prevalent and Bashaier scheme where sprinkler irrigation is existed as a modern system.Integrated techniques involving economic and hydrologic components are used to assess irrigation water use in both schemes under study.A Descriptive statistics and quantile analysis for crop water applied and crop water requirements for Elzeidab and Bashier field crops are presented.Findings: The results suggest that vast irrigation water devoted for agricultural production in the State coupled with low production will need attention on water management, allocation, quantities and introduction of water saving technologies.Water management in Elzeidab scheme is not well qualified to handle irrigation water.Implications: The paper unveiled that, to improve the water management performance in RNS institutional support is needed to ease irrigation water management.Value: The State tenants should therefore be guided on how to optimally use irrigation water and be encouraged to grow cash and food crops as a significant contribution to farm sustainability and malnutrition alleviation in the State. The ImporTance of agrIculTural fInance In producIng fIeld cropsIn sudan

India has taken up an ambitious goal to double the average income of agricultural households from 2015 to 2022. This mammoth task requiring a sharp accelerated annual growth of over 10% would have to harness all possible sources of growth within as well as outside the agricultural sector and will need strong inclusive measures in the irrigation sector such as water productivity, participatory irrigation management, water conservation, agricultural productivity, etc.Improper water management at the farm level leads to inefficient use of water and inequitable distribution with the tail‐end farmer often not getting water. Though an irrigation potential of 112 Mha (million hectares) has been created against an ultimate potential of 140 Mha, the utilization is only 93 Mha. Moreover, efficiency of water use in irrigation in India is about 30% to 40%. Emphasis now has to shift to resourceful management of water to meet the food grain demand of 450 million tonnes (MT) by 2050 against the present food grain production of 278 MT.This paper highlights the various steps taken by the Government of India, various state governments, non‐governmental organizations, etc. in reforming the irrigation sector of the country.

Sustainable Development Goals (SDG) or 2030 Agenda for Sustainable Development is an ambitious plan on achieving social, environmental and economic sustainability at global level. SDG6 is the dedicated goal on water and sanitation among 17 goals of SDGs. It sets out to ensure availability and sustainable management of water and sanitation for all. Goal contains 8 targets and 11 global indicators. SDG6 is targeting on managing global water resource though collaborative actions on improved water quality, increased water-use efficiency, implemented integrated water resources management, protected and restored water-related ecosystems, expanded international cooperation and capacity-building support on water and sanitation management. The main objective of this study is to assess the user values of water and status of water management in Wilpitawewa (Hali-Ella); small scale irrigation tank in Kamburupitiya, Matara to determine the status of the targets of SDG6. A household survey was conducted with a pre-tested questionnaire among the tank water user community of the area. Stratified random sampling was carried out and 75 households from four distances were selected (350 m, 2120 m, 2816 m and 3000 m) where the water gates are located along the tank irrigation channel. The respondents were asked to indicate usages of water, obtained output and associated monetary values. Collected data was analyzed quantitatively using Minitab 16. According to the results, total economic values of water of the sample indicate that 54% is for paddy cultivation, and 31%, 12% and 2% of economic values were represented by vegetable and fruit cultivation, fishery and domestic consumption respectively. Provision of tank water for paddy cultivation had decreased with the distance and caused for the reduction of the productivity of paddy fields. Supply and withdrawals of tank water for paddy cultivation had mismatches and mismanagement which led to water stress and reduction of water use efficiency of the tank. The quantity of tank water shows gradual fluctuation with prevailing weather variations, especially in recent years and this caused impact in domestic water consumption of the community. Waste dumping into the tank and surrounding area has increased and local community does not practice any water conservation method in their household levels. Therefore, majority of indicators of the SDG6 targets do not fulfill with existing conditions of the Wilpitawewa tank and its water users. The study emphasizes for responsible actions on improvements in water and sanitation management on achieving SDG6 Keywords: Sustainable Development Goals, Water management, Water user values

In this work, we propose a new approach to diagnose if a water allocation scheme is compatible with long-term water security at the catchment scale, and suggest steps to achieve such compatibility. We argue that when the remaining flow of a river after upstream withdrawals is not sufficient to safeguarding ecological river functions, the basin is at extreme risk of water scarcity, which indicates that the water management is failing. To test this, we analysed the water scarcity risks and the safeguarded environmental flows (e-flows) in 277 basins across a wide range of hydro-climatic conditions in Chile (17–55°S). For each basin, water scarcity risks were assessed based on water stress indices (WSIs, computed as the ratio of withdrawals to water availability), considering two water-use scenarios: (i) WSImax, where total withdrawals correspond to the maximum consumptive water allowed by the law, i.e., where only the e-flows protected by law remain in the river, and (ii) WSIalloc, where total withdrawals correspond to the actual allocated consumptive water uses within the basins. Further, we evaluated the adequacy of the water management system to protect ecological river functions by contrasting the e-flows protected in Chile with those safeguarded in six other countries.The water allocation system in Chile incorporated the protection of minimum e-flows in 2005 and established that these do not exceed 20% of the mean annual streamflow, except in some exceptional cases. This upper limit is consistently lower than the e-flows safeguarded in other countries, where 20%–80% of the mean annual streamflow are protected. This turns out in WSImax values between 80% and 100% in all basins, well above the threshold associated with over-committed basins under extreme risk of water scarcity (70% typically). When moving from the legally allowed to the actually allocated water use scenario, we found contrasting results: about 70% of the basins show low water scarcity risk (WSIalloc <40%), while an 18% have WSIalloc above 100%, indicating the allocation is going beyond current law limits and even beyond physical limits.Our results reveal that the link between e-flows, water allocation and water security has not been adequately incorporated in the current law. E-flows stipulated by law are insufficient to fulfil environmental requirements, while placing the basins under extreme risk of water scarcity if the total allowed withdrawals were exerted. To move towards a system that can effectively achieve long-term water security, we recommend: (i) To define tolerable water scarcity risks for basins, considering environmental requirements. (ii) To translate those risks into measurable basin indices to measure water security, such as the WSI. (iii) To set maximum water use limits (or minimum e-flows) within the basins that are compatible to the water security goals. If, under current and projected water availability conditions, the existing withdrawals exceed these limits, water managers should be able to adapt total consumption to the required limits.