Foreword

Introduction

Acknowledgments

Overview

Water Use

Topography of the County

Geology of the County

Groundwater Availability

Exploration for Groundwater

Karst

Water Quality

Maps and Data

Additional Reading

References Cited

Definitions of Geologic Terms

Rock Descriptions

Discussion from McGrain and Currens (1978)

Ohio County is in the Western Kentucky Coal Field. It is primarily a terrain of rolling hills with local reliefs up to 150 feet.

The highest elevation, 800 feet, is a hill near the Ohio-Breckinridge County line in the northeastern corner of the county, approximately 4 miles east-northeast of Fordsville. Rattlesnake Knob, near the southeastern corner of the county, has an elevation of 780 feet. Ridgetop elevations of 500 to 600 feet are found in most parts of the county. The Green River marks parts of the southern and western boundaries, and the Rough River crosses the county in a meandering route from east to west. The lowest elevation in the county, approximately 365 feet, is at the confluence of these two streams at the west-central county boundary. Their valleys are broad and flat; elevations along the valley floors are 380 to 400 feet.

The elevation of Hartford, the county seat, is 428 feet. Other elevations are Aetnaville, 487 feet; Beaver Dam, 414 feet; Centerton, 424 feet; Cromwell, 461 feet; Dundee, 420 feet; Fordsville, 468 feet; McHenry, 420 feet; Olaton, 450 feet; Pleasant Ridge, on the Ohio-Daviess County line, 522 feet; Render, 421 feet; and Rosine, 564 feet.

The 7.5-minute topographic quadrangle maps that cover Ohio County are shown, by name and by index code (Kentucky Natural Resources and Environmental Protection Cabinet) on the index map.

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