WATER RESOURCES OF NORTHEAST IOWA

P.J. Horick

Iowa Department of Natural Resources, Geological Survey Bureau,
Water Atlas No. 8, 1989, 133 p.

TABLE OF CONTENTS

Glossary
Acknowledgments
Foreward
Introduction

Northeast Iowa
Population
The land surface

Paleozoic Plateau
Iowan Surface
Southern Iowa Drift Plain

Sources of fresh water

The hydrologic cycle
Climate

Surface-water resources

Streamflow variability
Average discharge
Flow duration
Low-flow frequency
Floods
Topographic and flood-prone maps
Wetland areas
Springs and seeps
Hydropower potential

Groundwater resources

The aquifers

Surficial aquifers
The bedrock surface
Bedrock aquifers and confining beds
Depth and configuration of the bedrock aquifers
Thickness of the bedrock aquifers
Use of maps to predict depths of drilling

Water in the aquifers
Water levels and well hydraulics

Water levels in surficial aquifers
Water levels in bedrock aquifers
Silurian-Devonian aquifer
Galena aquifer
Cambrian-Ordovician aquifer
Dresbach aquifer

Well yields

Yields from surficial aquifers
Yields from bedrock aquifers

Silurian-Devonian aquifer
Fort Atkinson-Elgin (lower Maquoketa) aquifer
Galena aquifer
Cambrian-Ordovician aquifer

St. Peter (upper Cambrian-Ordovician) aquifer
Jordan (lower Cambrian-Ordovician) aquifer

Dresbach aquifer

Water quality

Surface-water quality
Groundwater quality

Surficial aquifers
Bedrock aquifers

Silurian-Devonian aquifer
Fort Atkinson-Elgin (lower Maquoketa) aquifer
Galena aquifer
St. Peter (upper Cambrian-Ordovician) aquifer
Jordan (lower Cambrian-Ordovician) aquifer
Dresbach aquifer

Water use
Water withdrawals
Iowa water resources laws and regulations
Bibliography