Groundwater around the World: A Geographic Synopsis, 1st Edition (Hardback) book cover

Groundwater around the World

A Geographic Synopsis, 1st Edition

By Jean Margat, Jac van der Gun

CRC Press

376 pages

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pub: 2013-03-19
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This book 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.

The book 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 This is followed by a systematic documentation of the quantities of groundwater withdrawn and used around the world, and of the corresponding shares of groundwater in each of the main water use sectors.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 this book 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 the book 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.


What most groundwater books lack, this one does not; it brings together society, policy making, health care, ecology and the management of natural resources […] Van der Gun is one of the few with the knowhow and the capacity of transferring his knowledge and experience to a broad, engaged audience. […] Groundwater around the World cannot be missing from any hydrological bookshelf.

-Michael van der Valk, Stromingen 23, issue 3, 2015, pp. 3-5

… a data-rich compilation of groundwater information useful to anyone interested in groundwater resource issues. … useful to readers who are interested in a general overview of global hydrogeology; it is also a good starting point for those interested in specific regions. … Highly recommended.

—T J Kroeger, Bemidji State University

This extremely well-illustrated book provides a valuable resource and unique perspective through collation of considerable datasets, maps, tables and reference material to help gain a quantified and qualified understanding of groundwater resources at the macro-scale. This book has a broad appeal; and has particular value as a textbook for geographers, and water resources and environmental managers. It also should gain the attention of strategic planners and policy-makers. It makes a good read for hydrogeologists, and those interested in environmentally sustainable socio-economic development. Governmental and nongovernmental agencies and advisors involved with the political and socio-economic aspects of trans-boundary and macro-scale resource development would also benefit from the purchase of this book.

Trevor Muten, Quarterly Journal of Engineering Geology and Hydrogeology, Vol. 47, 2014, pp. 189-193

Groundwater around the World fills a real niche in texts on groundwater and aquifers. Most texts on groundwater follow a tradition of describing the history of hydrogeology or groundwater hydrology with the evolution of the many equations used in the groundwater toolbox. But the transdisciplinary nature of water resources management dictates a new genre of texts that focus on global issues first. […]

So if the reader is a faculty member searching for a good textbook for an upper level undergraduate level course on the Geography of Groundwater, or a book to complement the many summaries of the world’s water that give short shrift to groundwater, then look no further. If the reader is a practitioner searching for a book to help plan their next international trip and want to know something about a country’s groundwater resources before departing, then Groundwater around the World: A Geographic Synopsis will serve as your underground travel guide.

W. Todd Jarvis, Interim Director, Institute for Water and Watersheds, and Assistant Professor in College of Earth, Ocean and Atmospheric Sciences, Oregon State University, USA

The book has been written in very clear language and it will help non-hydrogeologists understand the complexities of aquifer systems and groundwater resource management and protection. It has been produced to a very high standard and illustrated by over 100 well-drawn figures most of which are in colour and some 36 tables that summarize data. The authors also use a total of 23 text boxes to explain in detail various technical and scientific concepts outside the flow of the main text such as explaining what constitutes an aquifer system and the relationship between groundwater and surface water. The book also contains a long list of references at the end of each chapter and a well-structured index that, together with the data contained in the appendices, will make it a valuable research resource.

The authors have certainly met the objective of summarizing groundwater conditions on a worldwide basis for the international decision makers and it is hoped that it will make a valuable contribution to enabling individual states to cooperate in the management and sharing of groundwater resources without a recourse to war.

Rick Brassington, Newcastle University, in Hydrogeology Journal, online 21 February 2014, DOI 10.1007/s10040-014-1109-1

Table of Contents

1 Introduction

2 Groundwater in the global water cycle

2.1 Water below the ground surface

2.2 How much groundwater participates in the water cycle?

2.3 Groundwater and surface water: How are they related?

2.4 Groundwater is prominent in the water cycle of dry regions

3 Geography of the world’s groundwater systems

3.1 Two key aspects of the subsoil: Composition and structure

3.2 Global hydrogeological panorama

3.3 The Earth’s mega aquifer systems

3.4 Main aquifer types

3.5 A different angle of view: Groundwater provinces and global groundwater regions

4 Groundwater resources

4.1 Groundwater: A natural resource, but only partially exploitable

4.2 Which exploitation strategies?

4.3 Natural groundwater quality

4.4 Groundwater-related ecosystems

4.5 Geography of groundwater resources

4.6 The particular case of non-renewable groundwater resources

4.7 How to get access to groundwater and withdraw it

4.8 Fragility and vulnerability of the resources

4.9 Can the groundwater resources be augmented?

5 Groundwater withdrawal and use

5.1 Groundwater: A special and often preferred source of water

5.2 How much groundwater is withdrawn and where is withdrawal most intensive?

5.3 Evolution of groundwater withdrawals during the twentieth century

5.4 The contribution of groundwater reserves

5.5 Purposes for which groundwater is used

5.6 Contribution of groundwater to water supply in different sectors

5.7 Socio-economic implications

6 Growing needs for groundwater resources management interventions

6.1 Why should groundwater resources be managed?

6.2 Human activities modify groundwater levels and fluxes

6.3 Current state of the pressures produced by groundwater withdrawal

6.4 Pressures produced by climate change and sea level rise

6.5 Groundwater quality degradation

7 Groundwater resources management

7.1 Elements of groundwater resources management

7.2 Groundwater resources management in practice: Examples and comments

7.3 Actual state of groundwater resources management around the world

8 Final comments

8.1 About the information and knowledge on the world’s groundwater

8.2 About the key features of groundwater, its role and observed trends

8.3 About groundwater resources management

Appendix 1: Glossary

Appendix 2: Statistics on renewable water resources – by country

Appendix 3: Some data on the world’s mega aquifer systems

Appendix 4: Brief description of the global groundwater regions

Appendix 5: Groundwater abstraction estimates by country

Appendix 6: Suggestions for additional reading

About the Authors

Jean Margat is a hydrogeologist. After fifteen years at the Service Géologique of Morocco, at the beginning of his career, he moved over to the Bureau de Recherches Géologiques et Minières (BRGM) at Orléans, 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 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.

Subject Categories

BISAC Subject Codes/Headings:
SCIENCE / Earth Sciences / General
SCIENCE / Environmental Science
TECHNOLOGY & ENGINEERING / Environmental / Water Supply