This book is the result of a joint research effort led by the U.S. National Academy of Sciences and involving the Royal Scientific Society of Jordan, the Israel Academy of Sciences and Humanities, and the Palestine Health Council. It discusses opportunities for enhancement of water supplies and avoidance of overexploitation of water resources in the Middle East. Based on the concept that ecosystem goods and services are essential to maintaining water quality and quantity, the book emphasizes conservation, improved use of current technologies, and water management approaches that are compatible with environmental quality.

Burgeoning population and climate change are among the most critical challenges facing the 21st century. Both have critical implications for groundwater resources, especially in many developing countries where resources are already under pressure. Due to low rainfall and high evaporation in parts of the Middle East and North Africa, groundwater is not being renewed, and groundwater laid down up to 10,000 years ago is literally being mined for irrigation, often very inefficiently. Over recent decades, groundwater levels have fallen dramatically in key grain-growing regions like the American Great Plains and the North China Plain. As the population grows and emerging economies like China and India demand more food, especially water intensive meat products, agricultural demand for water is set to increase. The rapid shift of population from the countryside to the cities is also adding to this pressure; most old wells in Beijing are now dry. Pollution from industry, agriculture and shanty towns is destroying many groundwater resources; some could take 50 years to clean up even with strict and immediate controls. This volume looks at the technical, socio-economic and political problems being faced, and at the developments in groundwater science and management that may help create a sustainable future for our planet.

Water is a limited natural resource indispensable for human existence. Water resources exist in the form of glaciers, oceans, rainwater, groundwater, and surface water. Uncontrolled population growth, urbanization, and inefficient management of natural resources have hastened the pace and impact of climate change. Floods and droughts related to climate change occur more frequently, destructing the livelihood of people and disrupting the fragile ecosystem. The need for conservation of available water resources and devising strategies for resource management is very relevant in the current scenario and this book deals precisely with water resources and their management. It provides abundant and relevant information on all aspects related to water resources, including the need for conservation, water management strategies in different parts of the world, the impact of climate change on water management, pollution of water resources and treatment, and so forth. The book will motivate readers and scientists alike to look further and make concerted efforts towards promoting the preservation and conservation of water resources.

An engaging call to understand and protect groundwater, the primary source of drinking water for almost half of the world’s population Groundwater is essential for drinking water and food security. It provides enormous environmental benefits by keeping streams and rivers flowing. But a growing global population, widespread use of industrial chemicals, and climate change threaten this vital resource. Groundwater depletion and contamination has spread from isolated areas to many countries throughout the world. In this accessible and timely book, hydrology expert William M. Alley and science writer Rosemarie Alley sound the call to protect groundwater. Drawing on examples from around the world, including case studies in the United States, Canada, Australia, India, and Sub-Saharan Africa, the authors examine groundwater from key scientific and socioeconomic perspectives. While addressing the serious nature of groundwater problems, the book includes stories of people who are making a difference in protecting this critical resource.

One of the greatest conundrums facing the arid western United States is the availability, use, and quality of groundwater. In large sections of the West, groundwater is the only dependable source of water for agricultural production and home consumption. Yet many of the aquifers are being depleted at a rate that will suck them dry within a century. Furthermore, dependence upon groundwater in many areas will only increase in the future. This dependence is already having serious consequences for small towns on the Great Plains. Faced with growing costs associated with deeper wells and the need for ever more advanced technology for extracting water, these towns find they lack the resources to maintain current agricultural practices. ø In this timely assessment of the West?s groundwater resources, the authors provide a detailed overview of groundwater management in the Western states. The authors present for each state the various management strategies, laws, and political realities that have made groundwater appropriation such a volatile subject. They also suggest possible difficulties that states and regions might face under current groundwater policies. By examining separate cases and viewing the West as a whole, the authors are able to identify not only the most pressing problems but also the most appropriate management techniques for protecting water supplies for future use.