WATER RESOURCES OF NORTH-CENTRAL IOWA

R. Buchmiller, G. Gaillot and P.J. Seonksen

Iowa Department of Natural Resources, Geological Survey Bureau,
Water Atlas No. 7, 1985, 93 p.

TABLE OF CONTENTS

Foreword
Glossary
Acknowledgments
Introduction

North-Central Iowa
Population
The land surface

Sources of water

The hydrologic cycle
Climate

Surface-water resources

Streamflow variability
Average discharge
Flow duration
Low-flow frequency
Floods
Wetland areas

Groundwater resources

The aquifers

Surficial aquifers
The bedrock surface
Bedrock aquifers
Altitude of bedrock aquifers
Thickness of the bedrock aquifers
Use of maps to predict depths of drilling

Water in the aquifers
Water levels

Water levels in surficial aquifers
Water levels in bedrock aquifers

Well yields

Yields from surficial aquifers
Yields from bedrock aquifers

Water quality

Surface-water quality

Sediment in streams
Chemical quality

Groundwater quality

Surficial aquifers
Cretaceous aquifer
Mississippian aquifer
Devonian aquifer
Cambrian-Ordovician aquifer

Water use and withdrawals
Water resources laws and regulations

State jurisdiction

Water pollution control
Water and floodplains

Federal jurisdiction

Selected references