USGS

Effect of Seasonal and Long-Term Changes in Stress on Sources of Water to Wells

U.S. Geological Survey, Water Supply Paper 2445

by Thomas E. Reilly and David W. Pollock


Table of Contents

Abstract

Introduction

Definition of Area Contributing Recharge

Steady-State Systems

Transient-State Systems

Method of Analysis

Definition of Hypothetical Ground-Water System

Area Contributing Recharge to a Well Under Steady-State Average Conditions

Area Contributing Recharge to a Well Under Conditions of Annually Varying Recharge

Effects of Long-Term 18.6-Year Luni-Solar Cyclical Stress

Well 1

Well 3

Three Wells Discharging Simultaneously

Changes in Ground-Water Use

Effect of System Travel Time on Areas Contributing Recharge Under Cyclic Conditions

Discussion

Summary and Conclusions

References

 


 

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