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Simulation of the Effects of Development of the Ground-Water Flow System of Long Island, New York

U.S. Geological Survey, Water-Resources Investigations Report 98-4069

by Herbert T. Buxton and Douglas A. Smolensky


Table of Contents

Abstract

Introduction

Purpose and scope

Previous investigations

Acknowledgments

Principles of simulation analysis

Hydrogeologic framework

Hydrogeologic structure

Water-transmitting properties

Predevelopment hydrologic conditions (pre-1900)

Hydrologic boundaries

Water table

Bedrock

Streams

Shoreline discharge boundaries

Saltwater-freshwater interface

Subsea discharge boundaries

Ground-water levels and flow patterns

Ground-water budget

Effects of development on the ground-water system

Hydrologic conditions during 1968-83

Hydrologic stresses

Ground-water system response

Base flow

Saltwater-freshwater interface

Ground-water levels and flow patterns

Ground-water budget

1960's drought conditions

Hydrologic stress

Ground-water system response

Base flow

Ground-water-level declines

Hydrologic effects of a water-supply strategy for the year 2020

Projected stress

Ground-water system response

Base flow

Saltwater-freshwater interface

Ground-water levels and flow patterns

Ground-water budget

Summary

References cited

 


 

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