This book highlights the likely impacts of climate change in terms of global and national water securities, how different countries are attempting to address these complex problems and to what extent they are likely to succeed. A major global concern at present, especially after the social and economic havoc that has been caused by COVID-19 in only one year, is how we can return to earlier levels of economic development patterns and then further improve the process so that sustainable development goals are reached to the extent possible by 2030, in both developed and developing countries. Mankind is now facing two existential problems over the next several decades. These are climate change and whether the world will have access to enough water to meet all its food, energy, environment and health needs. Much of expected climate change impacts can be seen through the lens of extreme hydrological events, like droughts, floods and other extreme hydrometeorological events. Chapter 7 is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.Chapter 12 is available open access under a Creative Commons Attribution-NonCommercial 4.0 International License via link.springer.com.

The UN designated the decade 2005–2015 as the International Decade for Action – Water for Life. The move was initiated at the third World Water Forum in Kyoto, 2003, and it could prove the most significant and effective outcome of the triennial series of World Water For a yet. Its major aims are: (1) to promote efforts to fulfil recent international commitments, especially in the Millennium Goals, (2) to advance towards a truly integrated, int- national approach to sustainable water management, and (3) to put special emphasis on the role of women in these efforts. Even so, it faces tremendous and, as I write, increasing obstacles. The intense season of hurricanes and tropical storms in 2008 illustrated yet again not only the power of nature, but also the vulnerability of the poorer nations, like Haiti and Jamaica. New Orleans and Texas fared better, not because of the efforts of the International Decade for Natural Disasters (1990–2000) to increase preparedness, but more because the USA had learnt from its own experiences in Hurricane Katrina. The biggest obstacle of all is the burgeoning world population. It took off last century, but it is predicted to reach unimaginable heights this century: at least 10 billion by 2050, maybe 20 billion by 2100. Governments are powerless to halt it, even the Chinese. Achieving water security globally against this backdrop will be a Herculean task.

The prosperity and national security of the United States depend directly on the prosperity and stability of both partner and competing countries around the world. Today, U.S. interests are under rising pressure from water scarcity, extreme weather events and water-driven ecological change in key geographies of strategic interest to the U.S. Those water-driven stresses are undermining economic productivity, weakening governance systems and fraying social cohesion in scores of countries and, in the process, undermining the vitality of rural livelihoods, fostering local and ethnic conflicts, driving broad migratory movements and contributing to the growth of insurgencies and terrorist networks. While the U.S. intelligence community has steadily expanded natural resource concerns in their global threat analyses, our overseas development assistance remains locked into provision of water and hygienic services rather than responding to the full sweep of global water challenges including governance and policy failures, growing conflicts over water and the need for promoting sustainable transboundary water arrangements in partner countries. A fundamental departure from the past is urgently needed. Based on 18 case studies, Water, Security and U.S. Foreign Policy provides an analytical framework to help policy makers, scholars and researchers studying the intersection of U.S. foreign policy with the environment and sustainability issues, interpret the impacts of water-driven social disruptions on the stability of partner governments and U.S. interests abroad. The book also delivers specific recommendations to reorient U.S. development and diplomatic engagements that can forestall and prevent social disruptions and ensuing threats to U.S. prosperity and national security.

The purpose of this book is to present an overview of the latest research, policy, practitioner, academic and international thinking on water security—an issue that, like water governance a few years ago, has developed much policy awareness and momentum with a wide range of stakeholders. As a concept it is open to multiple interpretations, and the authors here set out the various approaches to the topic from different perspectives. Key themes addressed include: Water security as a foreign policy issue The interconnected variables of water, food, and human security Dimensions other than military and international relations concerns around water security Water security theory and methods, tools and audits. The book is loosely based on a masters level degree plus a short professional course on water security both given at the University of East Anglia, delivered by international authorities on their subjects. It should serve as an introductory textbook as well as be of value to professionals, NGOs, and policy-makers.

This publication examines the critical issues surrounding water security (water shortage, water excess, inadequate water quality, the resilience of freshwater systems), providing a rationale for a risk-based approach and the management of trade-offs between water and other policies.

The United Nations World Water Assessment Programme (WWAP) is hosted and led by UNESCO. WWAP brings together the work of 31 UN-Water Members as well as 37 Partners to publish the United Nations World Water Development Report (WWDR) series. Under the theme Water for Sustainable Development, the WWDR 2015 has been prepared as a contribution from UN-Water to the discussions surrounding the post-2015 framework for global sustainable development. Highlighting water's unique and often complex role in achieving various sustainable development objectives, the WWDR 2015 is addressed to policy- and decision-makers inside and outside the water community, as well as to anyone with an interest in freshwater and its many life-giving benefits. The report sets an aspirational yet achievable vision for the future of water towards 2050 by describing how water supports healthy and prosperous human communities, maintains well functioning ecosystems and ecological services, and provides a cornerstone for short and long-term economic development. It provides an overview of the challenges, issues and trends in terms of water resources, their use and water-related services like water supply and sanitation. The report also offers, in a rigorous yet accessible manner, guidance about how to address these challenges and to seize the opportunities that sound water management provides in order to achieve and maintain economic, social and environmental sustainability.

Scientific evidence shows that most glaciers in South Asia's Hindu Kush Himalayan region are retreating, but the consequences for the region's water supply are unclear, this report finds. The Hindu Kush Himalayan region is the location of several of Asia's great river systems, which provide water for drinking, irrigation, and other uses for about 1.5 billion people. Recent studies show that at lower elevations, glacial retreat is unlikely to cause significant changes in water availability over the next several decades, but other factors, including groundwater depletion and increasing human water use, could have a greater impact. Higher elevation areas could experience altered water flow in some river basins if current rates of glacial retreat continue, but shifts in the location, intensity, and variability of rain and snow due to climate change will likely have a greater impact on regional water supplies. Himalayan Glaciers: Climate Change, Water Resources, and Water Security makes recommendations and sets guidelines for the future of climate change and water security in the Himalayan Region. This report emphasizes that social changes, such as changing patterns of water use and water management decisions, are likely to have at least as much of an impact on water demand as environmental factors do on water supply. Water scarcity will likely affect the rural and urban poor most severely, as these groups have the least capacity to move to new locations as needed. It is predicted that the region will become increasingly urbanized as cities expand to absorb migrants in search of economic opportunities. As living standards and populations rise, water use will likely increase-for example, as more people have diets rich in meat, more water will be needed for agricultural use. The effects of future climate change could further exacerbate water stress. Himalayan Glaciers: Climate Change, Water Resources, and Water Security explains that changes in the availability of water resources could play an increasing role in political tensions, especially if existing water management institutions do not better account for the social, economic, and ecological complexities of the region. To effectively respond to the effects of climate change, water management systems will need to take into account the social, economic, and ecological complexities of the region. This means it will be important to expand research and monitoring programs to gather more detailed, consistent, and accurate data on demographics, water supply, demand, and scarcity.