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.

Understanding the issues that have been encountered at other sites, and the steps that have led to successful resolution of these issues, can provide great help to those considering, planning, or implementing new groundwater recharge projects. Recent technical advances and operational experience have demonstrated that well recharge is a feasible and cost effective method of artificially recharging natural aquifers. This practical guide reviews the technical constraints and issues that have been addressed and resolved through research and experience at many sites. The book presents aquifer storage recovery (ASR) technology and traces its evolution over the past 25 years in the United States. Procedures for groundwater recharge are presented, and selected case studies are examined. Drinking water quality standards and conversion factors are provided in the appendix for easy reference.

Laboratory physical models are a valuable tool for coastal engineers. Physical models help us to understand the complex hydrodynamic processes occurring in the nearshore zone and they provide reliable and economic engineering design solutions.This book is about the art and science of physical modeling as applied in coastal engineering. The aim of the book is to consolidate and synthesize into a single text much of the knowledge about physical modeling that has been developed worldwide.This book was written to serve as a graduate-level text for a course in physical modeling or as a reference text for engineers and researchers engaged in physical modeling and laboratory experimentation. The first three chapters serve as an introduction to similitude and physical models, covering topics such as advantages and disadvantages of physical models, systems of units, dimensional analysis, types of similitude and various hydraulic similitude criteria applicable to coastal engineering models.Practical application of similitude principles to coastal engineering studies is covered in Chapter 4 (Hydrodynamic Models), Chapter 5 (Coastal Structure Models) and Chapter 6 (Sediment Transport Models). These chapters develop the appropriate similitude criteria, discuss inherent laboratory and scale effects and overview the technical literature pertaining to these types of models. The final two chapters focus on the related subjects of laboratory wave generation (Chapter 7) and measurement and analysis techniques (Chapter 8).

This book discusses coastal defense measures, which have not improved in the past few decades, and better alternatives. It emphasizes on the existence of stable bays in coastal geomorphology and their use in coastal stabilization. The conventional measures for saving beaches, such as seawalls, groins, offshore breakwaters, and renourishment, are discussed in detail, followed by an alternative known as headland control. Many types of coast, and the respective defense measures, are discussed, especially for eroding beaches downcoast of harbors with long breakwaters. The formation of offshore bars during storms is examined and the design of stable recreational beaches is demonstrated. Practical design problems are discussed in all cases. Many issues requiring attention in coastal engineering are also outlined.

Contaminated land and the methods and legal controls governing its reclamation for subsequent development and use are of great current interest and concern. This volume in the Issues in Environmental Science and Technology series contains seven articles which treat the many aspects of this subject, ranging from risk assessment and risk management, through specific remediation methods and the evolution of government policy and controls, to analysis of the legal and technical features of specific environmental insurance policies. The chemistry of the non-ferrous heavy metals lead, zinc and cadmium is examined in relation to reclamation of superfund sites in the USA alongside a consideration of the role of the Welsh Development Agency in developing strategies for the recovery of derelict and contaminated land. An authoritative treatment of each of the topics is ensured by the particular expertise and distinction of the authors, and as such Contaminated Land and Its Reclamation will make an important contribution to the public debate on these issues. It will be essential reading for all those groups of people directly or indirectly involved, from consultants and their technical advisors, through developers, contractors and landowners, to local authorities and government agencies with responsibility for policy and its implementation in this area.

The treadle irrigation pump is able to lift up to 7000 litres of water per hour using the power of the human body, and can be locally made at low cost in small-scale metalworking shops. Its acceptance in Bangladesh, where it was first developed in 1984, is extraordinary, with over 500,000 pumps estimated now to be in use.;The current design offered in this manual has evolved from the Bangladesh original into a fully portable pump with both lift and pressure capacity and is especially appropriate to situations where soils are permeable, and water cannot easily be distributed through channels. The manual is intended to be read primarily by organizations engaged in economic development activities which have a particular expertise in technology transfer; it is not intended just as a step-by-step guide for the manufacturer (although it can be used in this way).

This monograph provides an overview of the principles required for a service orientation in the management of irrigation and drainage systems. The material covered is designed to emphasize an area largely neglected in the irrigation and drainage management literature. The dominating philosophy underlying this book is that irrigation and drainage systems must be managed as a service business responsive to the needs and changing requirements of its customers. It is postulated that this service approach to the management of irrigation and drainage systems consitutes a key element of the startegy that is needed to improve the current level of performance of many irrigation and drainage systems worldwide. Enhanced performance of irrigation is a prerequisite if we are to face the enormous challenge of producing greater quantities of food to meet the demand of a growing population. This is particularly the case in an environment with increasing competition for water from industry and urban water users, set against mounting concerns about environmental sustainability.

A manual on the development and reconstruction of coastal fishing areas. Coverage ranges from design conditions, through use of tidal currents for sea water flow, to improvement of water quality and breeding facilities.

Effective irrigation and drainage systems are essential if growing demands for water resources are to be met. For the use of water for irrigation to be improved we must understand current levels of performance. This book draws together the growing body of knowledge on irrigation and drainage performance assessment that has been gained over the last twenty years. It provides guidelines for practitioners to enable them to design and carry out performance assessment and implement performance-based management. Developed by a working group of the International Commission on Irrigation and Drainage (ICID) it provides a generic framework for performance assessment with guidance on the theory and practice of how to audit and assess the performance of irrigation and drainage schemes.

Understanding how to properly manage urban stormwater is a critical concern to civil and environmental engineers the world over. Mismanagement of stormwater and urban runoff results in flooding, erosion, and water quality problems. In an effort to develop better management techniques, engineers have come to rely on computer simulation and advanced mathematical modeling techniques to help plan and predict water system performance. This important book outlines a new method that uses probability tools to model how stormwater behaves and interacts in a combined- or single-system municipal water system. Complete with sample problems and case studies illustrating how concepts really work, the book presents a cost-effective, easy-to-master approach to analytical modeling of stormwater management systems.

Former industrial and urban land is increasingly being recycled, a practice which follows current political policy and is appropriate in the more heavily populated areas of Europe. The contamination which soils and water below such land may have suffered due to past industrial activities could pose future risks to new occupiers, or to the environment as a whole, and therefore it is important that an assessment of the risk is undertaken before such land is re-used. This volume has been written specifically to assist developers, consultants and planners who are involved in the reclamation of contaminated land in ensuring that such recycling does not expose the public or the wider environment to unacceptable risks. It provides a clear rationale for why such risk assessments are needed, outlines the current legislation regulating such activities, and indicates where the responsibilities lie for control of this development. Inevitably, the assessment approach of this book draws mainly on UK experiences and regulations but the methodology and basic principles provided are universal, and would be applicable when the safe recycling of contaminated land becomes a more important issue of development in other countries. The risk assessment approach advocated in the book will be valuable to many developers of contaminated land, since it is affordable and logical, and adequately diagnostic to identify sites where re-use will not be hazardous. The book describes a comprehensive range of risks which have been given due consideration as potential problems when former industrial land is reused, whilst also dispelling many of the vague and often unjustified concerns over land contamination.

Key Features: Provides clear and authoritative recommendations for managing fire in ecological and social contexts Authors are all international leaders in their fields and include not only academics but also leaders of Indigenous communities Explains Indigenous cultural and knowledge systems to a degree that has rarely been accessible to lay and academic readers outside specialized disciplines like Anthropology Responds to growing need for new approaches to managing human-ecological systems that are in greater sympathy with Australia's natural environments/climate, and value the knowledge of Indigenous people Timely for scholarly and interest groups intervention, as the Australian government is again looking to 'develop the north' Sustainable Land Sector Development in Northern Australia sets out a vision for developing North Australia based on a culturally appropriate and ecologically sustainable land sector economy. This vision supports both Indigenous cultural responsibilities and aspirations, as well as enhancing enterprise opportunities for society as a whole. In the past, well-meaning if often misguided policy agendas have failed - and continue to fail - North Australians. This book helps breach that gap by acknowledging and harnessing Indigenous cultural strengths and knowledge systems for looking after the country and its people, as part of a smart, novel and diversified ecosystem services economy.

The second edition (1997) of this text was a completely rewritten version of the original text Basic Coastal Engineering published in 1978. This third edition makes several corrections, improvements and additions to the second edition. Basic Coastal Engineering is an introductory text on wave mechanics and coastal processes along with fundamentals that underline the practice of coastal engineering. This book was written for a senior or first postgraduate course in coastal engineering. It is also suitable for self study by anyone having a basic engineering or physical science background. The level of coverage does not require a math or fluid mechanics background beyond that presented in a typical undergraduate civil or mechanical engineering curriculum. The material p- sented in this text is based on the author's lecture notes from a one-semester course at Virginia Polytechnic Institute, Texas A&M University, and George Washington University, and a senior elective course at Lehigh University. The text contains examples to demonstrate the various analysis techniques that are presented and each chapter (except the first and last) has a collection of problems for the reader to solve that further demonstrate and expand upon the text material. Chapter 1 briefly describes the coastal environment and introduces the re- tively new field of coastal engineering. Chapter 2 describes the two-dimensional characteristics of surface waves and presents the small-amplitude wave theory to support this description.

This book discusses the functions of revetments and the different aspects of structural performance. It includes example specifications and calculations that enable the engineer to choose the most stable, appropriate and cost-effective revetment system for a given situation. The book guides the engineer through the design process, from identifying hydraulic loading conditions and initial dimensioning of the revetment elements to detailed design of the revetment elements to ensure adequate protection against design wave conditions.

Sea area reclamation is one important activity where land is obtained in coastal countries and regions. It is also a marine development activity with great environment impact. Management technologies for sea area reclamation is the technologies system for sea area reclamation management.This compendium is a summary of the research and application of reclamation management technology in China. It makes a thorough study and systematic exposition of the main technical links of reclamation management.This comprehensive reference text provides a window for domestic and abroad reclamation managers, reclamation demonstration and assessment workers, reclamation project owners and even teachers and students keen in reclamation management.

The compaction guide to greater profits, less hassle. Boost your bottom line with the expert, efficient soil compaction techniques and technological solutions in this fully updated Second Edition. This revision will provide the contractor, fill inspector, and geotechnical engineer with greater coverage of environmental topics, including.
* Septic system site investigation, evaluation, design, and construction, plus existing system renovation, repair, maintenance, and management
* The latest uses of artificial fills from around the world--foam plastics, Elastizell, Geocell, Solite, and waste materials like shredded tires and wood chips
* New material and helpful case studies on the correlation of Standard and Modified Proctor densities and a method for determining numerical values of bearing capacities for Proctor densities
In addition to the current state of the art of fill technology, basic insights into soil behavior are provided. Innovative and patented methods of design are presented, especially valuable for young practitioners and those responsible for their supervision and continuing education. Reviewed as "conversational," "humorous," "full of wisdom," and "practical," this unusually readable resource is a profit-maker no construction professional can afford to do without.

A respected hydraulic engineer, William Henry Wheeler (1832-1915) established himself as an authority in the fields of low-lying land reclamation and drainage, embanking, and the improvement of tidal rivers and harbours. Based on articles written for The Engineer in 1887, he published this more substantial work in 1888 to provide a practical point of reference for those working on existing drainage systems or designing and implementing new schemes. Drawing on first-hand knowledge of the low-lying fens of England and the polders of Holland, Wheeler describes the processes of drainage by gravitation and steam power. The book also includes chapters on lifting and draining water using the scoop wheel, the Archimedean screw pump and the centrifugal pump. Providing also a wealth of operational facts relating to pumping stations in England and abroad, this remains a rich source of information for those interested in the history of civil engineering.

First published in 1956, as the second edition of a 1940 original, this book forms the companion volume to Medieval Fenland. Together these volumes provide a consummately researched account of changing conditions within a fascinating region. The text is ambitious in scope, reflecting the author's position as a historical geographer, and covers a broad range of disciplinary perspectives, ranging from geology to socio-economic analysis. Numerous illustrative figures are contained, including maps, diagrams and photographs of the area, and a bibliography is also provided. Detailed, yet highly readable, this book will be of value to anyone with an interest in Fenland history and historical geography in general.

The Ganges-Brahmaputra-Meghna delta has newly emerged 'char' islands, resulting from the deposition of sediment, which are very vulnerable, socially, institutionally and environmentally. This book explains how the governments of Bangladesh and the Netherlands and the International Fund for Agricultural Development cooperated on a land-based rural development project to give settlers security and purpose. It details how they engaged communities and civil societies, and implemented an infrastructure aimed at reducing flooding, improving drainage, and providing adequate drinking water and sanitation. The book describes the project's application to crop and animal agriculture, and the development of value chains and encouragement of female participation. It considers the financial underpinning and infrastructure, as well as how to ensure the impacts of the scheme are enduring. The scheme serves as a model for support projects to vulnerable groups faced with climate change and other environmental challenges. This book is suitable for students, researchers, specialists and practitioners in rural development, water resources, land management and soil science.

An updated edition of a classic: an indispensable companion for a new era in cycling. The bicycle is almost unique among human-powered machines in that it uses human muscles in a near-optimum way. This essential volume offers a comprehensive account of the history of bicycles, how human beings propel them, what makes them go faster-and what keeps them from going even faster. Over the years, and through three previous editions, Bicycling Science has become the bible of technical bicycling not only for designers and builders of bicycles but also for cycling enthusiasts. After a brief history of bicycles and bicycling that demolishes many widespread myths, this fourth edition covers recent experiments and research on human-powered transportation, with updated material on cycling achievements, human-powered machines for use on land and in air and water, power-assisted bicycles, and human physiology. The authors have also added new information on aerodynamics, rolling drag, transmission of power from rider to wheels, braking, heat management, steering and stability, power and speed, and other topics. This edition also includes many new references and figures. With racks of bikeshare bikes on city sidewalks, and new restrictions on greenhouse gas-emitting cars, bicycle use will only grow. This book is the indispensable companion for a new era in cycling.

Coastal lagoons are fragile ecosystems that account for 13-15 percent of the world's littoral zone. Coastal lagoons constitute an essential environmental reservoir for fluvial sediments due to their capacity to retain them and also the accompanied elemental pollutants. In recent times it has been a common practice to redistribute large amount of coastal sediments for beach nourishment projects to combat shoreline retreat. The problem of beach/shoreline recession/erosion are as a result escalating impacts of emerging global geophysical changes, such as rising sea levels, and coastal development. This book examines the environmental effects of engineered solutions of massive dredge-and-fill methods which have been adopted world-wide in regard to the issue of shoreline erosion.

World Bank Technical Paper No. 389. By the International Commission on Irrigation and Drainage. This paper is the revised edition of Technical Paper No. 99, written in 1989. It provides the basis for the preparation of manuals necessary for managers and staffs to perform needed activities at the proper time. The guide provides a comprehensive list of issues that should be addressed in operation and maintenance manuals for irrigation and drainage systems, and a listing of published materials and working papers which will assist in the formulation of plans for operation and maintenance. The paper serves as a valuable tool to help improve the performance of irrigation and drainage systems and to assist managers in developing and improving effective organizations to serve water consumers better.

"Of late historians have become increasingly interested in the vast re-ordering of the environment involved in the creation of America. Nowhere was this more true than in the Sacramento Valley where re-ordering edged into folly. "Battling the Inland Sea is a powerful evocation of the losses and gains involved in battling the mighty Sacramento River. But more than this, it is an exploration of the national will as it sought to rearrange nature herself with such mixed results. Here is history dealing with the most elemental forces of land, water and engineering as they are shaped by public policy. Here is the profound drama of value and symbol which occurs when Americans come into conflict with forces over which they can exercise, as Robert Kelley shows, only the most transitory and pyrrhic victories."--Kevin Starr, author of the "Americans and the California Dream

"Robert Kelley's research into the origins of California's first great flood control system has already helped to inform the shaping of the state's water laws. Now he opens up the benefits of that work for the average reader in a wonderfully clear and engaging story that manages, among other things, to show that water development in the United States hasn't been just a matter of engineering but a cultural and intellectual achievement as well."--William Kahrl, author of "Water and Power

"A vividly written narrative of one of the major transformations of the physical world we inhabit. Robert Kelley draws upon his rich store of learning and insight to set the struggles over the Sacramento Valley into a broad context. His book contains important lessons for those who would understand the American economy, environment, politics,or culture."--Daniel W. Howe, author of "The Political Culture of the American Whigs

Fluvial, Environmental and Coastal Developments in Hydraulic Engineering contains the Proceedings of the International Workshop on State-of-the-Art Hydraulic Engineering (16-19 February 2004, Bari, Italy). The book is divided into four sections: -Air-water flows / Transitional flows; -Stepped chute / Transitional flows; -Environmental and coastal hydraulics with dispersion in estuaries and jets, and -Transitional flows. In this volume the energy loss of skimming flows is investigated systematically under a wide range of discharges, channel slopes, step heights, and dam heights. It is well known that in recent years environmental problems have an increasing pivotal role. The section on environmental and coastal hydraulics presents results on jet-wave interaction, which is still rare in literature. It also includes an attempt to reproduce the principal ocean circulation patterns by means of a numerical model, and to validate this with field measurements, using a Vessel Mounted Acoustic Doppler Profiler (VM-ADP). Other topics covered in this section are (a) tidal bores, which have a significant impact on estuarine systems, and (b) new fishway design and the effect of fishways on the migration of aquatic animals, including a design method for arranging the proposed fishway in the slit-type concrete Sabo dam. Various types of flow conditions are formed in accordance with inflow Froude number, boundary-layer development at inflow section, aspect ratio, relative downstream depth, channel geometry, Reynolds number, and air concentration at inflow section. As systematical clarification of the transitional flows is most significant for effective hydraulic design of hydraulic structures, varioustypes of transitional flows are analyzed, and presented. The volume is of special interest to scientists and students of hydraulics and fluid mechanics, to engineers, and to specialists in the field of environmental protection.