Aquifer Test Modeling

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.

Business & Money

Walton, William C.

Economics

CRC-Press

'Groundwater Pumping Tests is a practical book details concepts, techniques, field work, case studies, and microcomputer models-information designed to improve accuracy and reliability. Too frequently, groundwater pumping test design and analysis ignore well storage capacity, delayed gravity yield, well partial penetration, and aquitard storativity impacts without proving them negligible. As a result, erroneous conclusions are reached concerning aquifer system hydraulic characteristics, boundaries, and discontinuities. Pumping test data often is filtered arbitrarily without adequate justification in attempts to match inappropriate aquifer models and field conditions. Antecedent water level trends and water level adjustments for changes in barometric pressure and surface water stages frequently are ignored in calculating drawdown and recovery. Finally, manual graphic analysis supplemented with microcomputer programs is, to an excessive extent, being replaced by fully automatic microcomputer analysis without critical examination of interpretative methods in program algorithms and their limitations. This book will focus needed attention on the facets mentioned above.

Groundwater Pumping Tests

Science & Math

Earth Sciences

This new book includes four analytical microcomputer programs -on two diskettes-for quick easy simulation and graphing of uncomplicated two-dimensional groundwater flow and containment migration situations. Program operation, concepts, techniques, and methods are described in detail. The basic programs feature simulations of the following features: containment source areas and plumes, production and injection wells, drains, and mines. A graphics subprogram displays drawdown and concentration graphs and contour maps. Basic requirements are an IBM-PC or compatible computer with 256K RAM; a high resolution (640 x 200) monitor (monochrome mode); an IBM Color Graphics Adapter (CGA), IBM Enhanced Graphics Adapter (EGA), IBM Video Graphics Array (VGA) or IBM Multi-Color Graphics Array (MCGA), Hercules Color card (not Hercules Graphics card-though there are inexpensive CGA emulation programs on the market for the Hercules Graphics card) or equivalent; a dot-matrix printer; and IBM-PC DOS Version 2.1 or compatible.

Analytical Groundwater Modeling: Flow and Contaminant Migration

Chemistry

The purpose of this book is to bring together under one cover the principles of groundwater engineering. The concise format has produced a handy, comprehensive manual for professionals working in the groundwater industry. The author places emphasis on the application of theory and practical aspects of groundwater engineering. Well-cited references throughout the text guide you through the technology, scientific principles, and theoretical background of groundwater engineering. Exhaustive appendices contain quantitative data necessary for in-groundwater flow and contaminant migration equations. Principles of Groundwater Engineering is the state-of-the-art book that bridges the gap between groundwater theory and groundwater problem solving.

Principles of Groundwater Engineering

Lewis

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.

This book explains how to design a groundwater model using the accompanying customized DesignMod software. DesignMod does not require a digitizer, but instead uses the mouse and rich graphical features of the Windows environment. It enables the user to draw and redraw easily and quickly cross sections and plan views with site base map information, contour, and zonation pattern overlays. Discretization, aggregation, averaging, and approximation guidelines for designing groundwater models with DesignMod are provided as a handy reference. DesignMod also can be used to manipulate and view model database array files. Many exercises with step-by-step program operation documentation are provided for beginning and intermediate modelers.

Designing Groundwater Models with Windows

Computers & Technology

Operating Systems

The purpose of this book is to broaden and improve aquifer test analysis by generating type curves for complicated aquifer and well conditions. It simplifies type curve matching with on-screen interactive techniques, and introduces a statistical semi-automatic protocol for calibrating aquifer test site models. In addition, it discusses the validity of aquifer test analysis results.For anyone involved in aquifers and wells, this is an excellent resource for testing and analysis.

Aquifer Test Analysis with Windows TM Software

See the best price to sell, buy, or rent books by Walton, William C.. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Books by Walton, William C.

See the best price to sell, buy, or rent books by Walton, William C.. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Aquifer Test Modeling

Groundwater Pumping Tests

Analytical Groundwater Modeling: Flow and Contaminant Migration

Principles of Groundwater Engineering

Aquifer Test Modeling

Designing Groundwater Models with Windows

Aquifer Test Analysis with Windows TM Software