Recharge of Phreatic Aquifers in (Semi-)Arid Areas

Recharge of Phreatic Aquifers in (Semi-)Arid Areas PDF

Author: Ian Simmers

Publisher: Routledge

Published: 2017-10-19

Total Pages: 240

ISBN-13: 1351419579

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Groundwater use is of fundamental importance to meet the rapidly expanding urban, industrial and agricultural water requirements in (semi) arid areas. Quantifying the current rate of groundwater recharge and define its variability in space and time are thus prerequesites for efficient groundwater resource managment in these regions, where such resources are often the key to economic development. Attention focuses on recharge of phreatic aquifers, often the most readily-available and affordable source of water in (semi) arid regions. These aquifers are also the most susceptible to contamination, with the recharge rate determining their level of vulnerability. (Semi) arid zone recharge can be highly variable, the greater the aridity, the smaller and potentially more variable the natural flux. Its determination is an iterative process, involving progressive data collection and resource evaluation; there is also a need to use more than one technique to verify results. Direct, localised and indirect recharge mechanisms from a spectrum of known sources are addressed in the framework of recharge from precipitation, intermittant flow and permanent water bodies. The approach taken for each of these reflects the nature and current understanding of the processes involved. The volume also reviews current recharge estimation challenges, outlines recent developments and offers guidance for potential solutions.

Groundwater Pollution, Aquifer Recharge and Vulnerability

Groundwater Pollution, Aquifer Recharge and Vulnerability PDF

Author: N. S. Robins

Publisher: Geological Society of London

Published: 1998

Total Pages: 240

ISBN-13: 9781897799987

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The primary groundwater management issue in many countries today is pollution. This may derive from a point source, perhaps a leaking solvent store at a factory, or it may be diffuse, such as the threat posed by the use of agricultural fertilisers and pesticides. The key to understanding the transport of a pollutant from the ground surface or near surface into an aquifer is an understanding of recharge. In turn, this allows the vulnerability of aquifers to pollution to be classified and appropriate land zones to be defined. Land zonation of different classes of aquifer vulnerability is a valuable tool for management and planning. In this volume the recent developments within the interlinked areas of groundwater pollution, aquifer recharge and vulnerability are set against the current groundwater protection policies of the UK amd Republic Ireland.

Understanding Water in a Dry Environment

Understanding Water in a Dry Environment PDF

Author: Ian Simmers

Publisher: CRC Press

Published: 2003-01-01

Total Pages: 370

ISBN-13: 9789058096180

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In order to provide water security in the twenty-first century, there is universal agreement that a continuation of current policies and extrapolation of trends is not an option. Also clear is that from both water supply and development perspectives, the world's arid and semi-arid regions are those currently and potentially experiencing the highest water stresses. One third of the world's land surface is classified as arid or semi-arid, and about half of all countries are directly affected in some way by problems of aridity. The hydrology of arid and semi-arid areas is also known to be substantially different from that in more humid regions. It is therefore essential that investigation methods appropriate to the former are developed and applied, and that strategies for arid and semi-arid region water resources development recognise the principal characteristics of in-situ hydrological processes.

Arid Lands Water Evaluation and Management

Arid Lands Water Evaluation and Management PDF

Author: Robert Maliva

Publisher: Springer Science & Business Media

Published: 2012-06-09

Total Pages: 1068

ISBN-13: 364229104X

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A large part of the global population lives in arid lands which have low rainfall and often lack the water required for sustainable population and economic growth. This book presents a comprehensive description of the hydrogeology and hydrologic processes at work in arid lands. It describes the techniques that can be used to assess and manage the water resources of these areas with an emphasis on groundwater resources, including recent advances in hydrologic evaluation and the differences between how aquifer systems behave in arid lands versus more humid areas. Water management techniques are described and summarized to show how a more comprehensive approach to water management is required in these areas, including the need to be aware of cultural sensitivities and conditions unique to many arid regions. The integration of existing resources with the addition of new water sources, such as desalination of brackish water and seawater, along with reusing treated wastewater, will be required to meet future water supply needs. Also, changing climatic conditions will force water management systems to be more robust so that future water supply demands can be met as droughts become more intense and rainfall events become more intense. A range of water management techniques are described and discussed in order to illustrate the methods for integrating these measures within the context of arid lands conditions.

Water Resources of Arid Areas

Water Resources of Arid Areas PDF

Author: D. Stephenson

Publisher: Taylor & Francis

Published: 2004-08-15

Total Pages: 755

ISBN-13: 1134242247

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With Africa's water resources constantly threatened by an increasing population and the resultant rise in water demand, together with the stresses of water use for various activities, desertification, climate change, and other interventions in the water cycle by man, it is vital that the water resources in arid and semi-arid regions are developed a

Groundwater Recharge from Run-off, Infiltration and Percolation

Groundwater Recharge from Run-off, Infiltration and Percolation PDF

Author: K.-P. Seiler

Publisher: Springer Science & Business Media

Published: 2007-09-26

Total Pages: 257

ISBN-13: 1402053053

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To face the threats to the water supply and to maintain sustainable water management policies, detailed knowledge is needed on the surface-to-subsurface transformation link in the water cycle. Recharge flux is covered in this book as well as many other groundwater issues, including a comparison of the traditional and modern approaches to determine groundwater recharge. The authors also explain in detail the fate of groundwater recharge in the subsurface by hydraulic and geologic means, in order to stimulate adapted groundwater-management strategies.

Estimation of Natural Groundwater Recharge

Estimation of Natural Groundwater Recharge PDF

Author: I. Simmers

Publisher: Springer Science & Business Media

Published: 1987-12-31

Total Pages: 534

ISBN-13: 9789027726322

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Proceedings of the NATO Advanced Research Workshop on Estimation of Natural Recharge of Groundwater (with special reference to Arid and Semi-Arid Regions), Antalya, Side, Turkey, March 8-15, 1987

Global Groundwater Resources and Management

Global Groundwater Resources and Management PDF

Author: B.S. Paliwal

Publisher: Scientific Publishers

Published: 2017-04-01

Total Pages: 528

ISBN-13: 9387869660

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The book on “Global Groundwater Resources and Management” has been aimed at growing recognition of depleting world groundwater resources, their contamination, future requirement of the fast growing human population of the world and urgent need of a better groundwater resources management system. The issues are quite complex but now they have crossed all the political boundaries and have become a common cause. The biggest challenge before the scientific community is to integrate valuable scientific advances and technological progress to solve the issue based on holistic and effective sustainable groundwater management. The book comprises the selected papers presented from all over the world at the 33rd International Geological Congress, Oslo, Norway, August 6 -14. 2008. A referee system of high, international standard has been used to review all the papers thoroughly before accepting them for publication. Each paper has been reviewed by at least two internationally recognized subject experts. In many cases as many as 5 or 6 subject experts have been contacted for the review work for a single paper because a much delayed response from the first two reviewers. Fortunately, all of them have sent their review comments simultaneously but at a later date. The book is broadly divided into five sections dealing with key aspects of global groundwater resources and management 1. Groundwater Resources and Management 2. Hydogeological Conditions, Groundwater Assessment and Modeling 3. Hydrogeochemistry and Contamination of Groundwater Resources 4. Exploitation of Groundwater and its Recharge 5. Hazardous Groundwater Conditions In total 31 research papers from Argentina, Australia, Bangladesh, China, Finland, Greece, India, Italy, Mexico, Netherlands, Oman, Poland, Portugal, Russia, Serbia, Turkey and Uzbekistan were selected from the General Symposium: Hydrogeology of the 33rd I.G.C. Oslo-2008. Reviewers were from countries like Argentina, Bangladesh, China, Finland, Greece, India, Indonesia, Italy, Japan, Poland, Portugal, Russia, Serbia, Syria, Thailand, Turkey and Uzbekistan.

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