Applied Groundwater Modeling

Simulation of Flow and Advective Transport

Author: Mary P. Anderson,William W. Woessner,Randall J. Hunt

Publisher: Academic Press

ISBN: 0080916384

Category: Technology & Engineering

Page: 630

View: 5739

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This second edition is extensively revised throughout with expanded discussion of modeling fundamentals and coverage of advances in model calibration and uncertainty analysis that are revolutionizing the science of groundwater modeling. The text is intended for undergraduate and graduate level courses in applied groundwater modeling and as a comprehensive reference for environmental consultants and scientists/engineers in industry and governmental agencies. Explains how to formulate a conceptual model of a groundwater system and translate it into a numerical model Demonstrates how modeling concepts, including boundary conditions, are implemented in two groundwater flow codes-- MODFLOW (for finite differences) and FEFLOW (for finite elements) Discusses particle tracking methods and codes for flowpath analysis and advective transport of contaminants Summarizes parameter estimation and uncertainty analysis approaches using the code PEST to illustrate how concepts are implemented Discusses modeling ethics and preparation of the modeling report Includes Boxes that amplify and supplement topics covered in the text Each chapter presents lists of common modeling errors and problem sets that illustrate concepts

Modellierung dynamischer Prozesse in der Hydrologie

Grundwasser und ungesättigte Zone

Author: Ekkehard Holzbecher

Publisher: Springer-Verlag

ISBN: 3642610730

Category: Science

Page: 342

View: 2751

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Das Buch bietet in einem ersten Hauptteil eine Einführung in Strömungsvorgänge in der gesättigten und ungesättigten Zone und deren analytische Beschreibung. Im Anschluß wird erläutert, wie man unterirdische Strömungen auf dem Computer numerisch modellieren kann. In einem zweiten Hauptteil werden Prozesse der Stoff- und Wärmeausbreitung behandelt. Dabei erfolgt eine analytische Beschreibung von Transport-, Sorptions-, Abbau- und Produktionsvorgängen sowie die darauf aufbauende Umsetzung in numerische Rechnersimulationen. Die Modellierung von Strömung und Ausbreitung wird an Beispielen erläutert. Handbücher für die Programme zur Erstellung von 3D-Strömungs- bzw. 2D-Ausbreitungsmodellen finden sich im Anhang. Die beiliegende CD-ROM enthält Software, mit der selbständig Modelle erstellt werden können.

Aquifer Test Modeling

Author: William C. Walton

Publisher: CRC Press

ISBN: 9781420042931

Category: Technology & Engineering

Page: 240

View: 8595

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In recognition of the trend toward using numerical methdos for analyzing aquifer test data, Aquifer Test Modeling delineates the application of numerical Laplace inversion analytical equations and numerical models and demonstrates the use of public domain software. Written by a leading expert with over fifty years of experience, this highly practical text provides a thorough grounding in the terms and methods employed in aquifer test modeling, while also establishing a protocol for organizing and simplifying conceptual model definition and data analysis. Using graphs, tables, and sample datasets to enhance understanding, the author delineates the five major steps involved in the aquifer test modeling process. He discusses the importance of the conceptual model definition as a framework for organizing, simplifying, and idealizing information. The chapters cover the selection of appropriate aquifer test mathematical model equations compatible with previously defined conceptual models and highlight the importance of reviewing the mathematical assumption and the adjustment of data for any departures. They also explain format selection, technique selection, well function or drawdown calculation, and calibration. The book provides five sample data sets to assist the reader in becoming familiar with WTAQ and MODFLOW aquifer test modeling input and output data file contents with confined nonleaky and unconfined aquifer conditions. It includes conceptual models consisting of abbreviated descriptions of aquifer test facilities, aquifer test data, and aquifer parameter values together with selected sample file sets. These are just a few of the features that make the book a valuable tool for estimating the supply and contamination characteristics of aquifers.

Groundwater Resources Modelling

A Case Study from the UK

Author: M. G. Shepley

Publisher: Geological Society of London

ISBN: 9781862393448

Category: Science

Page: 378

View: 6338

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The UK is a country with over 150 years of widespread exploitation of its principal aquifers for public water supply. Increasing demands, greater awareness of environmental pressures and more exacting legislation has heightened the need for quantitative models to predict the impacts of groundwater use. In the UK this has culminated in a unique national, regulator-led programme for England and Wales to develop conceptual and numerical models of the principal bedrock aquifers. The outcomes of this programme will be of interest to the international hydrogeological community, particularly as international legislation such as the European Water Framework Directive requires management of water issues across administrative boundaries with a varied cast of stakeholders. The collection of papers provides a contrast between practitioner- and research-based approaches to assess and predict the anthropogenic impacts and environmental pressures.

Applied Groundwater Studies in Africa

IAH Selected Papers on Hydrogeology

Author: Segun Adelana,Alan MacDonald

Publisher: CRC Press

ISBN: 0203889495

Category: Science

Page: 502

View: 4955

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Groundwater is Africa’s most precious natural resource, providing reliable water supplies for many people. Further development of groundwater resources is fundamental to increasing access to safe water across the continent to meet coverage targets and reduce poverty. There is also an increasing interest in the use of groundwater for irrigated agriculture as the climate becomes more variable. Sustainable development of the resource is not a trivial task and depends crucially on an understanding of the hydrogeology and people with the skills to make informed decisions on how groundwater can best be developed and managed in a sustainable fashion. Despite these obvious needs, however, little attention has been paid to the systematic gathering of information about groundwater resources in the past few decades, with the result that data are patchy, knowledge is limited and investment is poorly targeted. This book was written to start to bridge the knowledge gap. The 29 chapters are written by a combination of practitioners and researchers mainly from within Africa using experience from recent and ongoing projects. The chapters highlight the complexity and variety of issues surrounding the development and management of groundwater resources across Africa, and provide a snapshot of groundwater research and application in the early 21st century. Chapters range from strategic discussions of the role of groundwater in development and poverty reduction, to case studies on techniques used to develop groundwater, and modelling methods for managing groundwater systems.

Grundwasserchemie

Praxisorientierter Leitfaden zur numerischen Modellierung von Beschaffenheit, Kontamination und Sanierung aquatischer Systeme

Author: Broder J. Merkel,Britta Planer-Friedrich

Publisher: Springer-Verlag

ISBN: 366207611X

Category: Science

Page: 219

View: 5812

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Die Autoren konzentrieren sich in ihrem Werk auf die Lösung praxisorientierter hydrogeochemischer Fragestellungen und schließen damit eine Lücke im Bereich anwendungsorientierter Lehrbücher. Ein erster Teil fasst dabei die Theorie soweit zusammen, daß es auch Neulingen im Bereich der Modellierung und Nichtchemikern leicht gemacht wird, das anspruchsvolle Thema zu erfassen. Akademikern mit hydrogeologischer oder chemischer Grundausbildung sowie Studenten höherer Semester in den relevanten Fachgebieten erlaubt das Buch, anhand der beschriebenen Beispiele und Lösungen, eine eigenständige Erarbeitung der Sachverhalte. Die beiliegende CD-ROM ermöglicht zudem eine rasche Überprüfung der Ergebnisse, bzw. das Nachvollziehen aller Aufgaben und Lösungen anhand der beigefügten PhreeC-Eingabedateien. Da das Programm PhreeC kostenfrei verfügbar ist und mit Windows-Oberfläche auf der CD-ROM vorhanden ist, kann sofort mit der Modellierung begonnen werden.

Computer Models for Water-Resources Planning and Management

National Study of Water Management During Drought

Author: Ralph A. Wurbs

Publisher: DIANE Publishing

ISBN: 9780788141706

Category:

Page: 218

View: 2526

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This report is designed to help water managers & planners who are not expert in modeling, & modeling experts in one area who are interested in surveying available models in another area. Covers: model development & distribution org's.; general-purpose software; demand forecasting & balancing supply with demand; water distribution system models; ground water models; watershed runoff models; stream, hydraulics models; river & reservoir water quality models; & reservoir/river system operation models. Inventory of selected models appendix. Tables.

Groundwater Contamination: Use of Models in Decision-Making

Proceedings of the International Conference on Groundwater Contamination: Use of Models in Decision-Making, Amsterdam, The Netherlands, 26–29 October 1987, Organized by the International Ground Water Modeling Center (IGWMC), Indianapolis — Delft

Author: G. Jousma,Jacob Bear,Y.Y. Haimes,F. Walter

Publisher: Springer Science & Business Media

ISBN: 9400923015

Category: Science

Page: 656

View: 9294

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The protection of groundwater resources has emerged in recent years as a high priority topic on the agenda of many countries. In responding to the growing concern over deteriorating groundwater quality, many countries are developing a comprehensive regulatory framework for the management of subsurface water resources with management referring to both quantity and quality aspects. Within this framework, groundwater models are rapidly coming to playa central role in the development of protection and rehabilitation strategies. These models provide forecasts of the future state of the groundwater aquifer systems and/or the unsaturated zone in response to proposed management initiatives. For example, models will predict the effects of implementing a proposed management scheme on water levels and on the transport and fate of pollutants. The models are now used in the formulation of policies and regulations, the issuing of permits, design of monitoring and data collection systems, and the development of enforcement actions. The growth in the use of these sophisticated tools has led to many unforeseen problems in groundwater management. Lingering issues include reliability of codes, quality assurance in model development and applications, efficient utiliza tion of human and material resources, technology transfer and training. Some issues have legal ramifications, as in cases where the applications of models have been contested in courts.

Hydrogeology and Groundwater Modeling, Second Edition

Author: Neven Kresic

Publisher: CRC Press

ISBN: 9780849333484

Category: Technology & Engineering

Page: 828

View: 902

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Coupling the basics of hygrogeology with analytical and numerical modeling methods, Hydrogeology and Groundwater Modeling, Second Edition provides detailed coverage of both theory and practice. Written by a leading hydrogeologist who has consulted for industry and environmental agencies and taught at major universities around the world, this unique book fills a gap in the groundwater hydrogeology literature. With more than 40 real-world examples, the book is a source for clear, easy-to-understand, and step-by-step quantitative groundwater evaluation and contaminant fate and transport analysis, from basic laboratory determination to complex analytical calculations and computer modeling. It provides more than 400 drawings, graphs, and photographs, and a variety of useful tables of all key groundwater parameters, as well as lucid, straightforward answers to common hydrogeological problems. Reflecting nearly ten years of new scholarship since the publication of the bestselling first edition, this second edition is wider in focus with added and updated examples, figures, and problems, yet still provides information in the author's trademark, user-friendly style. No other book offers such carefully selected examples and clear, elegantly explained solutions. The inclusion of step-by-step solutions to real problems builds a knowledge base for understanding and solving groundwater issues.

Introduction to Groundwater Modeling

Finite Difference and Finite Element Methods

Author: Herbert F. Wang,Mary P. Anderson

Publisher: Academic Press

ISBN: 0080571948

Category: Technology & Engineering

Page: 237

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The dramatic advances in the efficiency of digital computers during the past decade have provided hydrologists with a powerful tool for numerical modeling of groundwater systems. Introduction to Groundwater Modeling presents a broad, comprehensive overview of the fundamental concepts and applications of computerized groundwater modeling. The book covers both finite difference and finite element methods and includes practical sample programs that demonstrate theoretical points described in the text. Each chapter is followed by problems, notes, and references to additional information. This volume will be indispensable to students in introductory groundwater modeling courses as well as to groundwater professionals wishing to gain a complete introduction to this vital subject. Key Features * Systematic exposition of the basic ideas and results of Hilbert space theory and functional analysis * Great variety of applications that are not available in comparable books * Different approach to the Lebesgue integral, which makes the theory easier, more intuitive, and more accessible to undergraduate students

Hydrology, Ecology, and Fishes of the Klamath River Basin

Author: Committee on Hydrology, Ecology, and Fishes of the Klamath River,Board on Environmental Studies and Toxicology,Water Science and Technology Board,Division on Earth and Life Studies,National Research Council

Publisher: National Academies Press

ISBN: 030911506X

Category: Technology & Engineering

Page: 272

View: 4232

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The Klamath River basin, which spans parts of southern Oregon and northern California, has been the focus of a prominent conflict over competing uses for water. Management actions to protect threatened and endangered fish species in the basin have left less water available for irrigation in dry years and heightened tensions among farmers and other stakeholders including commercial fishermen, Native Americans, conservationists, hunters, anglers, and hydropower producers. This National Research Council book assesses two recent studies that evaluate various aspects of flows in the Klamath basin: (1) the Instream Flow Phase II study (IFS), conducted by Utah State University, and (2) the Natural Flow of the Upper Klamath Basin study (NFS), conducted by the U.S. Bureau of Reclamation (USBR). The book concludes that both studies offer important new information but do not provide enough information for detailed management of flows in the Klamath River, and it offers many suggestions for improving the studies. The report recommends that a comprehensive analysis of the many individual studies of the Klamath river basin be conducted so that a big picture perspective of the entire basin and research and management needs can emerge.

Proceedings

1994 groundwater modeling conference, August 10-12, 1994, Colorado State University Campus, Fort Collins, Colorado

Author: International Ground Water Modeling Center,Colorado State University. Dept. of Civil Engineering. Groundwater/Environmental Hydrology Program

Publisher: N.A

ISBN: N.A

Category: Science

Page: 590

View: 6103

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Calibration and Reliability in Groundwater Modelling

From Uncertainty to Decision Making : Proceedings of the ModelCARE 2005 Conference : Held in The Hague, The Netherlands, 6-9 June, 2005

Author: Marc F. P. Bierkens,J. C. Gehrels,Karel Kovar

Publisher: International Assn of Hydrological Sciences

ISBN: 9781901502589

Category: Technology & Engineering

Page: 316

View: 5697

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Great advances have been made in assessment of uncertainty of groundwater model outputs and how to decrease this uncertainty. However, the last step of the triplet uncertainty assessment, uncertainty reduction, uncertainty management has not yet been properly made. In practice, policy makers still find it hard to cope with model predictions that have been enriched with measures of quantified uncertainty. Several contributions deal with decision making under uncertainty. Considerable progress is reported in the science of determining stochastic well head protection zones and another noticeable advance is the combined modelling and uscaling of spatially heterogeneous hydraulic and geochemical parameters. Further progress in the calibration of groundwater modelling is evident from the use of model reduction techniques in order to calibrate models with millions of grid nodes and the use of remote sensing data.

Groundwater Modelling

An Introduction with Sample Programs in BASIC

Author: W. Kinzelbach

Publisher: Elsevier

ISBN: 9780080870168

Category: Computers

Page: 332

View: 9291

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With the growing concern about groundwater resources both with respect to quantity and quality, the need for groundwater modelling tools is increasing. Although there are a number of excellent introductions to the concepts of groundwater flow and pollution transport, the student or practising engineer wishing to develop a model and do practical work on the computer finds that there is still a gap between the understanding of concepts and the ability to handle the actual computations. A great deal of groundwater modelling software for personal computers and microcomputers has appeared recently, but taking these models from the shelf and applying them without a background on their capabilities often leads to disappointment and frustration. This book provides the reader with all necessary details to start modelling on his own. It gives a comprehensive introduction to the major techniques currently used in the modelling of groundwater flow and pollutant transport in groundwater. Both self-contained and comprehensive, it presents a wide variety of methods currently applied in the management, protection, and remediation of groundwater resources, which allows the reader to take the step from understanding the concepts to the ability to handle actual computations. All major techniques are illustrated by a total of 19 sample programs in BASIC which can be modified by the reader to suit his own need. The programs can be run directly on an Apple II+ or compatible personal computer, and with slight modifications, most can be transferred to other microcomputers with BASIC capability and at least 48K of central memory. The necessary modifications for running the programs on an IBM-PC are indicated in the appendix. Students and professionals in the fields of hydrogeology and civil and environmental engineering will find this to be an extremely useful book. Knowledge of the basic concepts of hydrogeology is assumed and, starting from that basis, the book will enable them to understand mathematical groundwater models and write computer programs of their own.

Groundwater Modeling and Management under Uncertainty

Proceedings of the Sixth IAHR International Groundwater Symposium, Kuwait, 19 - 21 November, 2012

Author: Khaled Hadi,Nadim Copty

Publisher: CRC Press

ISBN: 1138000124

Category: Science

Page: 88

View: 5518

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Groundwater is a vital resource of water, in some regions of the world the only source of fresh water. Its use for domestic use and agriculture dates back thousands of years. In recent decades the over-exploitation and unabated use of this resource has lead to severe environmental problems such as resource depletion, land subsidence and groundwater contamination. To mitigate these adverse impacts and protect this valuable resource, it is imperative that rational groundwater management practices and policies as well as robust modeling and analysis tools be developed. This volume and the accompanying USB memory card include the abstracts and full papers that were presented at the 6th International Groundwater Symposium that was held in Kuwait between 19 and 21 of November, 2012. The Symposium was jointly organized by the Kuwait Institute for Scientific Research and the Groundwater Hydraulics and Management Committee of the International Association for Hydro-Environment Engineering and Research (IAHR). More than 100 researchers, engineers, geologists and water specialists from more than 20 countries attended the Symposium to exchange ideas and expertise relating to the latest developments in the fi eld. The papers presented at the Symposium were organized under the following themes: modeling and management under uncertainty, sustainable groundwater management in arid and semiarid environments, Aquifer Storage and Recovery (ASR) as a groundwater management tool, management solutions for groundwater rise problems, fl ow and transport modeling, and subsurface contamination and remediation. This volume provides a state-of-the-art discussion of the latest issues relating to groundwater exploration, management and protection, with an emphasis on bridging the gap between research practice and policy. The volume will serve as an important reference to students, researchers, modelers as well as practitioners and policy makers.

Calibration and Reliability in Groundwater Modelling

A Few Steps Closer to Reality : Proceedings of the ModelCARE 2002 Conference : Held in Prague, Czech Republic, 17-20 June, 2002

Author: Karel Kovar,Zbyněk Hrkal

Publisher: International Assn of Hydrological Sciences

ISBN: 9781901502077

Category: Technology & Engineering

Page: 525

View: 4943

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