1st Edition

Aquifer Testing Design and Analysis of Pumping and Slug Tests

By Jonathan D. Istok, Karen J. Dawson Copyright 1992

    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.

    BASIC CONCEPTS. INTRODUCTION. Pumping Tests. History. Commonly Used Terms. Aquifer Tests. Methods of Analysis. Organization of This Manual. PUMPING TEST DESIGN. Step 1: List Required Aquifer Properties. Step 2: Identify Constraints. Step 3: Develop a Conceptual Model. Step 4: Estimate Aquifer Properties. Step 5: Select a Model and Locate Observation Wells. Step 6: Select a Pumping Rate and Well Diameter. CORRECTIONS TO DRAWDOWN DATA. Trends in Water Levels. Atmospheric Pressure Changes. Tidal, River Level, and Surface Loading Changes. Decreases in Saturated Thickness. ANALYSIS OF PUMPING TEST DATA. Graphical Methods of Analysis. The Theory of Superposition. Methods of Identifying Aquifer Characteristics. ANALYSIS OF STEP DISCHARGE PUMPING TESTS. Background. Determination of Head Loss Coefficients. Determination of Well Efficiency. AQUIFER MODELS. MODEL 1: EQUILIBRIUM, CONFINED. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 2: EQUILIBRIUM, UNCONFINED. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 3: TRANSIENT, CONFINED. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 4: TRANSIENT, CONFINED, LEAKY. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 5: CONFINED, LEAKY, WITH AQUITARD STORAGE. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 6: TRANSIENT, CONFINED, PARTIAL PENETRATION, ANISOTROPIC. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 7: TRANSIENT, CONFINED, LEAKY, PARTIAL PENETRATION, ANISOTROPIC. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 8: TRANSIENT, CONFINED WITH WELL STORAGE. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 9: TRANSIENT, CONFINED, LEAKY, WELL STORAGE. Conceptual Model. Mathematical Model. Analytical Solution. MODEL 10: TRANSIENT, CONFINED, FISSURE-BLOCK SYSTEM. Conceptual Model. Mathematical Model. Analytical Solution. MODEL 11: TRANSIENT, CONFINED, ANISOTROPIC IN TWO HORIZONTAL DIRECTIONS. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 12: TRANSIENT, UNDERGOING CONVERSION FROM CONFINED TO UNCONFINED. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 13: TRANSIENT, UNCONFINED, ANISOTROPIC. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 14: TRANSIENT, UNCONFINED, PARTIAL PENETRATION, ANISOTROPIC. Conceptual Model. Mathematical Model. Analytical Solution. MODEL 15: TRANSIENT, UNCONFINED, PARTIAL PENETRATION, ANISOTROPIC, WELL STORAGE. Conceptual Model. Mathematical Model. Analytical Solution. MODEL 16: TRANSIENT, UNCONFINED, PARTIAL PENETRATION, AQUITARD-AQUIFER. Conceptual Model. Mathematical Model. Analytical Solution. MODEL 17: SLUG TEST-INFINITE OR SEMI-INFINITE DEPTH, INCOMPRESSIBLE AQUIFER, ANISOTROPIC. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 18: SLUG TEST-UNCONFINED OR LEAKY CONFINED, INCOMPRESSIBLE AQUIFER, PARTIAL PENETRATION. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. MODEL 19: SLUG TEST-CONFINED, COMPRESSIBLE AQUIFER, WELLBORE STORAGE. Conceptual Model. Mathematical Model. Analytical Solution. Methods of Analysis. APPENDICES. APPENDIX A: DERIVATION OF COOPER AND JACOB (1946) STRAIGHT-LINE METHOD. APPENDIX B: COMPUTER PROGRAMS FOR COMPUTING TYPE CURVES AND DRAWDOWN. REFERENCES.

    Biography

    Karen Dawson is a member of the geotechnical staff of CH2M Hill in Bellevue, Washington. She received an M.S. in geotechnical engineering with an environmental engineering minor and focus on groundwater from Oregon State University. She also has B.S. degrees in civil and forest engineering from Oregon State University. Karen was formerly an employee of the Washington State Department of Transportation and involved with the design of the Seattle I-90 project. Jonathan Istok is an Associate Professor in the Department of Civil Engineering at Oregon State University. He specializes in the development of statistical and mathematical models for groundwater flow and contaminant transpon processes. He is the author of the American Geophysical Union Water Resources Monograph Groundwater modeling by the finite element method.