by John F. Harsh and Randell J. Laczniak
Foreword
Abstract
Introduction
Purpose and Scope
General Setting and Location of Study Area
Previous Investigations
Acknowledgments
Conceptualization of Ground-Water Flow System
Hydraulic Properties
Description of Hydrogeologic Units
Columbia Aquifer
Yorktown-Eastover Aquifer and Yorktown Confining Unit
St. Marys-Choptank Aquifer and St. Marys Confining Unit
Chickahominy-Piney Point Aquifer and Calvert Confining Unit
Aquia Aquifer and Nanjemoy-Marlboro Confining Unit
Aquifer 5 and Confining Unit 5
Aquifer 4 and Confining Unit 4
Brightseat-Upper Potomac Aquifer and Confining Unit
Middle Potomac Aquifer and Confining Unit
Lower Potomac Aquifer and Confining Unit
Hydrogeologic Effects of Pleistocene Erosion
Ground-Water Movement
Ground-Water Use
Analysis of the Ground-Water Flow System
Model Description
Boundaries
Grid Design
Hydraulic Characteristics and Stresses
Transmissivity
Storage Coefficient
Vertical Leakance
Ground-Water Recharge
Streambed Leakance
Time Discretization and Ground-Water Withdrawal
Lateral Boundary Flow
Simulation of the Ground-Water Flow System
Strategy of Calibration
Prepumping Conditions
Pumping Conditions
Sensitivity Analysis
Limitation and Application of the Flow Model
Summary and Conclusions
References Cited
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