Groundwater Pumping Tests

William C. Walton is a semi-retired Consultant In Water Resources and resides on the banks of the Sangamon River at Mahomet, Illinois. Bill received his B.S. in Civil Engineering from Lawrence Institute of Technology in 1948 and attended Indiana University, University of Wisconsin, Ohio State University, and Boise State University. He served for 10 years as Director of the Water Resources Research Center and Professor of Geology and Geophysics at the University of Minnesota., Bill has 39 years of experience in the water resources field including 1 year with the U. S. Bureau of Reclamation, 7 years with the U. S. Geological Survey, 6 years with the Illinois State Water Survey, and 9 years with consulting companies such as Camp Dresser & McKee, Inc. and Geraghty & Miller, Inc. He was Executive Director of the Upper Mississippi River Basin Commission for 5 years. Bill has participated in water resources projects throughout the United States and Canada and in Haiti, El Salvador, Libya, and Saudi Arabia., He is an honorary Life Member and past Vice President of the National Water Well Association and a past editor of the Journal of Ground Water. Bill is past Chairman of the Ground Water Committee of the Hydraulics Division, American Society of Civil Engineers and a past member of the U. S. Geological Survey Advisory Committee on Water Data for Public Use. He is a past Consultant to the Office of Science and Technology, Washington, D. C. and an Advisor to the United States Delegation to the Coordinating Council of the International Hydrological Decade of UNESCO., Bill is the author of three books and over 70 technical papers. He served as a Visiting Scientist for the American Geophysical Union and the American Geological Institute and lectured at many universities throughout the United States.

• 1 INTRODUCTION, 2 DESIGN AND FIELD OBSERVATION, Generalized Design Features, Detailed Design with Pretest Conceptual Model, Microcomputer Programs, Analytical Equations, Example Problems, Data Collection and Processing, Drawdown and Recovery, Water Level Adjustments, 3 CONSTANT DISCHARGE TEST ANALYSIS, Analytical Models and Equations, Well Function Microcomputer Programs, Example Problem, Type Curve Matching Technique, Match Point Equations, Example Problems, Straight Line Matching Technique, Slope and Zero-Drawdown Intercept Equations, Induced-Streambed Infiltration, Microcomputer Programs, Example Problems, 4 STEP DRAWDOWN TEST ANALYSIS, Analytical Model, Well Loss Microcomputer Program, Example Problem, 5 CASE STUDIES, Nonleaky Artesian Aquifer System, Leaky Artesian Aquifer System, Water Table Aquifer System, Induced Streambed Infiltration, APPENDIX A–MICROCOMPUTER PROGRAMS, APPENDIX B–DISKETTE INSTRUCTIONS, APPENDIX C–REPRESENTATIVE HYDRAULIC CHARACTERISTICS, APPENDIX D–UNIT CONVERSION FACTORS, APPENDIX E–WELL FUNCTION AND VISCOSITY, VALUES, APPENDIX F–TYPE CURVES, References, Index