Paul M. Barlow
Abstract
Introduction
Purpose and Scope
Previous Investigations
Approach
Acknowledgments
Hydrogeologic Framework
Hydraulic Conductivity and Porosity
Ground-Water Flow Systems
Simple Flow System
Complex Flow System
Numerical Models of Ground-Water Used in Particle-Tracking Analysis
Simple Flow System
Conceptual Model of Ground-Water Flow
Three-Dimensional Model
Grid
Boundary Conditions
Hydraulic Properties
Calibration and Sensitivity
Two-Dimensional Model
Complex Flow System
Conceptual Model of Ground-Water Flow
Three-Dimensional Model
Grid
Boundary Conditions
Hydraulic Properties
Calibration and Sensitivity
Two-Dimensional Model
Particle-Tracking Analysis of Contributing Areas
Procedure for Delineation of Contributing Areas
Simple Flow System--Analysis of Contributing Areas to Two Hypothetical Wells
Delineation of Contributing Areas for a Pumping Rate of 0.5 Million Gallons Per Day Per Well
Sensitivity of Contributing Areas to Selected Factors
Penetration of Well Screens, Pumping Rates of Wells, and Ratio of Horizontal to Vertical Hydraulic Conductivity
Parameter Uncertainty: Horizontal Hydraulic Conductivity, Recharge, and Porosity
Sediment Heterogeneity
Vertical Discretization of Flow Model
Complex Flow System--Analysis of Contributing Areas to Existing Wells
Delineation of Contributing Areas for 1987 Average Daily Pumping Rates
Source of Water to the Wells
Sensitivity of Contributing Areas to Selected Factors
Hydraulic Conductivity of Fine-Grained Sediments of Eastern Barnstable
Distribution of Wastewater Return Flow
Pond Depth and Vertical Hydraulic Conductivity of Pond-Bottom Sediments
Vertical Discretization of Flow Model
Data Requirements for and Limitations of Particle Tracking for Delineation of Contributing Areas
Summary and Conclusions
References Cited
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