Any sustainable groundwater development programme requires knowledge of the prevailing flow system, extending from local to regional scale. This book of selected papers, arising from the 23rd International Hydrogelogic Congress in Mexico in 2004, discusses integral ground-water management with scale flow issues and presents methods of defining, preventing, controlling and mitigating negative environmental impacts related to groundwater. It high-lights specific issues such as transboundary groundwater flow, groundwater recharge, ground-water mining, and groundwater flow in thick aquifers; and stresses the importance of the sustainable development of groundwater and its social and economic implications. The book will interest groundwater researchers and professionals, students, water resources specialists, government administrators and educators, and those interested in groundwater and the environment. This volume will provide the reader with new insights into the procedures and processes that are influenced by scale of the groundwater flow system.

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This volume presents the contemporary issues surrounding groundwater pollution risk assessment and the application of vulnerability and risk assessment maps for the effective protection and management of aquifers. Numerous new and improved approaches to intrinsic and specific vulnerability assessment (modified DRASTIC, GOD, VULK, VURAAS) are described, some coupled with geophysical and hydrological surveys and hydrodynamic and transport modelling. Widespread use is made of GIS format.

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By 2050, the demand for water to sustain world agriculture will increase by 75% in order to feed an estimated nine billion inhabitants. Increased amounts of water will be required for irrigation and for industrial and domestic use. Natural ecosystems will be threatened by the expansion of agricultural land and by a reduction in water availability, while climate change will exacerbate the situation. Management of available resources, particularly groundwater, will become more critical and aquifers will need to be managed for the benefit of all. These selected papers were first presented at the International Association of Hydrogeologists, Dijon 2006, and are divided into six themes: large aquifers, resource assessment; large aquifers, water salinity and evolution; karstic and carbonate aquifer systems; geothermal aquifer systems; aquifer contamination studies and aquifer monitoring systems and management. The volume also includes a short biography of Henry Darcy and illustrates his contribution to science. Five invited contributions describe modern methods for estimating the hydraulic conductivity of aquifers.

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This title comprises forty-four papers by authors from twenty–two countries who presented papers at the Groundwater in Fractured Rocks International Conference in Prague in 2003. It investigates crucial issues about the hydrogeology of fractured environments, including sustainable groundwater development, groundwater protection and management, new and improved approaches to the investigating hydrogeology of fractured systems, understanding hydrogeologic properties on a local and regional scale, and the quantitative and qualitative aspects of groundwater flow and solute/contaminant transport. The papers are grouped into six sections under the following main topics: * Hydrogeologic environment of fractured rocks * Conceptual models, groundwater flow, and resources in fractured rocks * Groundwater quality in fractured rocks * Investigation and interpretation methods in fractured environment * Anthropogenic impacts on fractured environment * Numerical modelling of fractured environment. This compendium summarizes the results achieved in recent years, as well as considering the direction of future investigations at an international level. The book is a valuable benchmark reference for studies in fractured rock hydrogeology worldwide and will be of value to practising hydrogeologists and environmental scientists, as well as planners and environmental managers.

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This book on challenges in urban groundwater showcases the best urban groundwater papers presented at the 32nd International Geological Congress held in Florence, Italy in August 2004, and is supplemented by contributions solicited from other world experts active in urban groundwater research. Topics covered range from the urban water balance and rising groundwater levels to groundwater contamination and the role of aquifer modelling. The book is dedicated to the late Dr. Matthias Eiswirth. Matthias was President of the German Chapter of the International Association of Hydrogeologists (IAH), and Vice-Chair of the IAH Commission on Groundwater in Urban Areas. He was an outstanding research scientist and the book's contents reveal, directly and indirectly, the immense contribution Matthias made to urban groundwater science.

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