This practical book 'Groundwarer Pumping Tests', details concepts, techniques, field work, case studies, and microcomputer models-information designed to improve accuracy and reliability. The reader is expected to have a working knowledge of hydrogeology or access to books on groundwater geology and hydrology. 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.

This practical new book details concepts, techniques, field work, case studies, and microcomputer models-information designed to improve accuracy and reliability.

ANSI/ASCE/EWRI 70-19 provides guidelines for estimating the hydraulic properties of groundwater systems by inverse numerical modeling of aquifer pumping tests.

Introductory technical guidance for civil engineers, geotechnical engineers, environmental engineers and construction managers interested in groundwater aquifer pumping tests. Here is what is discussed: 1. METHODS FOR ESTIMATING APPROXIMATE VALUES OF AQUIFER CHARACTERISTICS 2. CONTROLLED PUMPING TESTS TO DETERMINE AQUIFER CHARACTERISTICS 3. TYPES OF AQUIFERS 4. SELECTION AND LOCATION OF PUMPING WELLS AND OBSERVATION WELLS 5. DISPOSAL OF DISCHARGE 6. PREPARATIONS FOR PUMPING TEST 7. INSTRUMENTATION AND EQUIPMENT REQUIRED FOR A TEST 8. RUNNING A PUMPING TEST 9. MEASUREMENT OF DISCHARGE 10. DETERMINING DURATION OF A TEST 11. RECOVERY TEST FOR TRANSMISSIVITY

New! A practical, easy-to-use reference for the design and analysis of groundwater pumping and slug tests Aquifer Testing: Design and Analysis of Pumping and Slug Tests is a complete design and analysis reference emphasizing practical solutions for engineers, scientists, consultants, and students knowledgeable in basic ground water theory. The book discusses such models as steady-state, transient flow with constant discharge, slug injection or withdrawal, and step discharge. This valuable book is an expansion on our best seller Groundwater Pumping Tests: Design and Analysis (Walton 1987). Part I contains general information about pumping tests, including how to design a pumping test, select an appropriate model, correct data, and analyze results. Part II is devoted to aquifer models and features hydrogeologic conditions, flow and geometry assumptions, governing differential equations, initial and boundary conditions, and analytical solutions for different models. BASIC coding for computer programs from which type curves may be developed and drawdown predicted are included in an appendix and on diskettes included in the book.

This study on ground water contains the following topics: hydrometeorolgy, hydrogeology and acrial photography, and acquifer properties and ground water flow.

Groundwater Science, 2E, covers groundwater's role in the hydrologic cycle and in water supply, contamination, and construction issues. It is a valuable resource for students and instructors in the geosciences (with focuses in hydrology, hydrogeology, and environmental science), and as a reference work for professional researchers. This interdisciplinary text weaves important methods and applications from the disciplines of physics, chemistry, mathematics, geology, biology, and environmental science, introducing you to the mathematical modeling and contaminant flow of groundwater. New to the Second Edition:. New chapter on subsurface heat flow and geothermal systems. Expanded content on well construction and design, surface water hydrology, groundwater/ surface water interaction, slug tests, pumping tests, and mounding analysis.. Updated discussions of groundwater modeling, calibration, parameter estimation, and uncertainty. Free software tools for slug test analysis, pumping test analysis, and aquifer modeling. Lists of key terms and chapter contents at the start of each chapter. Expanded end-of-chapter problems, including more conceptual questions. Two-color figures. Homework problems at the end of each chapter and worked examples throughout. Companion website with videos of field exploration and contaminant migration experiments, PDF files of USGS reports, and data files for homework problems. PowerPoint slides and solution manual for adopting faculty.