376 pages, maps
Groundwater Around the World presents a unique and up-to-date summary of what is known about groundwater on our planet, from a global perspective and in terms of area-specific factual information. Unlike most textbooks on groundwater, it does not deal with theoretical principles, but rather with the overall picture that emerges as a result of countless observations, studies and other activities related to groundwater in all parts of the world. The focus is on showing the role and geographical diversity of groundwater – a natural resource of great importance in daily life, but poorly understood by the general public and even by many water sector professionals.
Groundwater Around the World starts by analysing groundwater in the context of the hydrological cycle. Subsequently, groundwater systems as physical units, with their boundaries mainly defined by geological conditions, are reviewed. The next chapter looks at groundwater as a resource, paying attention, among others, to its quantity and quality, to the differentiation between renewable and non-renewable resources, and to the techniques for withdrawing groundwater. This is followed by a systematic documentation of the quantities of groundwater withdrawn and used around the world, and of the corresponding shares of groundwater in each of the main water use sectors. After that, steadily growing needs for groundwater management interventions are identified, resulting from local human activities and global change (including demography, economic development and climate change).
Finally, groundwater resources management is addressed and real-life cases are described that illustrate actions taken and experiences with different issues in different parts of the world. The authors attempted to write Groundwater Around the World in such a way that it is accessible to a wider readership than just groundwater professionals. It will also benefit non-groundwater specialists who work in groundwater-related fields (water managers, land use planners, environmentalists, agronomists, engineers, economists, lawyers and journalists), by broadening their understanding of groundwater and making them aware of the huge variety of groundwater settings.
Groundwater specialists will use Groundwater Around the World as a convenient reference on the geographical diversity of groundwater. Part of the contents or interpretations offered may even be new to them or enhance their knowledge of some aspects. The many maps, tables and references will save much time for those who would otherwise have to search elsewhere for basic information on the globe's groundwater.
2 Groundwater in the global water cycle
3 Geography of the world's groundwater systems
4 Groundwater resources
5 Groundwater withdrawal and use
6 Growing needs for groundwater resources management interventions
7 Groundwater resources management
8 Final comments
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Jean Margat is a hydrogeologist. After fifteen years at the Service Geologique of Morocco, at the beginning of his career, he moved over to the Bureau de Recherches Geologiques et Minieres (BRGM) at Orleans, France, for nearly another twenty five years. There he initiated, carried out and – in a later stage – supervised groundwater investigations. During that period he was also Director General's personal advisor on water resources. His professional experience took him to many areas in France and abroad, first and for all in arid regions, particularly in Africa and the Middle East. In addition to his professional activities at BRGM, Jean Margat has been Vice-President of the International Association of Hydrogeologists (IAH) and President of the French national chapter of the Association. Currently, he is Vice-President of the Association du Plan Blue and is frequently consulted as an expert by international organisations such as FAO, UNESCO, World Bank and UNDP. He is the author of a large number of publications related to water resources assessment and management, mapping, water resources terminology and water economics. In 2008, he received the International Hydrology Prize of the IASH, UNESCO and WMO.
Jac van der Gun is a groundwater hydrologist. One year with a water supply company in The Netherlands was followed by four years of employment by UNDTCD in water resources assessment activities in Bolivia. Then he joined the Institute of Applied Geoscience of the R&D organisation TNO (Applied Scientific Research) in The Netherlands, where he remained employed until retirement. At TNO, Jac van der Gun participated and took responsibility for the Groundwater Reconnaissance of The Netherlands. He became also involved in the international water resources assessment and management projects of the institute, such as water resources assessment projects in Yemen and Paraguay, and he carried out numerous short missions in Asia, Latin America, Africa and Europe for various international and national organisations, providing scientific-technical inputs, supervising projects, formulating projects and programmes, or evaluating these. Jac van der Gun was actively involved in establishing the International Groundwater Resources Assessment Centre, of which he became the first director in 2003. Currently, he is still active in several groundwater related projects of international organisations, mostly as a consultant to UNESCO or to UNESCO-IGRAC.