USGS

Geohydrology and Water Quality of Stratified-Drift Aquifers in the Lower Merrimack and Coastal River Basins, Southeastern New Hampshire

U.S. Geological Survey, WRIR 91-4025

by Peter J. Stekl, and Sarah M. Flanagan


Table of Contents

Abstract

Introduction

Purpose and scope

Description of the study area

Previous investigations

Approach and methods

Numbering system for wells, test holes, and springs

Acknowledgments

Geologic setting

Bedrock

Surficial deposits

Geohydrologic setting

Occurrence of ground water

General description and water-yielding characteristics of the lithologic units

Stratified drift

Till

Bedrock

Geohydrology of stratified-drift aquifers

Description of aquifer boundaries

Recharge, discharge, and direction of ground-water flow

Flow

Recharge

Discharge

Water table and direction of ground-water flow

Aquifer characteristics

Saturated thickness

Storage coefficient

Transmissivity and hydraulic conductivity

Evaluation of water availability and simulation of ground-water flow

Description and conceptualization of model

Description of analytical method

Windham-Cobbetts Pond aquifer

Boundary conditions

Aquifer parameters

Application of numerical model

Sensitivity analysis

Application of analytical method

Well-capture area

Kingston-Powwow River aquifer

Boundary conditions

Aquifer parameters

Application of numerical model

Sensitivity analysis

Application of analytical method

Well-capture area

Locations and descriptions of selected stratified-drift aquifers

Derry-Island Pond aquifer

Windham-Cobbetts Pond aquifer

Kingston-Powwow River aquifer

North Hampton-Knowles Pond aquifer

Greenland aquifer

Ground-water quality

Physical and chemical properties

Total dissolved solids

Specific conductance

pH

Alkalinity

Calcium, magnesium, and hardness

Sodium

Chloride

Sulfate

Iron and manganese

Trace elements

Organic compounds

Contamination sources

Summary and conclusions

References

Glossary

Appendix: Geohydrologic sections based on seismic-refraction data

 


 

Back

 



FirstGov button  Take Pride in America button