Foreword

Introduction

Acknowledgments

Overview

Water Use

Topography of the County

Geology of the County

Groundwater Availability

Exploration for Groundwater

Mined-Out Areas as Sources of Water

Water Quality

Maps and Data

Additional Reading

References Cited

Definitions of Geologic Terms

Rock Descriptions

In Knott County, water is obtained from consolidated sedimentary rocks of the Breathitt Formation, which is Pennsylvanian age, and from unconsolidated sediments of Quaternary age. The sediments of the Pennsylvanian were deposited 320 million years age. The warm climate of the Pennsylvanian grew extensive forests and great coastal swamps at the edges of water bodies. Marine waters advanced and receded many times, which produced many layers of sandstone, shale, and coal. Vegetation of all sorts fell into the water and was buried under blankets of sediments, which over long geologic time were compressed into coal. The non-vegetative sediments such as sand, clay and silt were compressed into sandstone and shale. Over the last one million years unconsolidated Quaternary sediments have been deposited along the larger streams and rivers.

Geologic Formations in the County
Coals, sandstones, and shales
BREATHITT GROUP (Pbu, Pbm, Pbl) (Princess Formation, Four Corners Formation, Hyden Formation, Pikeville Formation)

For more information, see the definitions of geologic terms and rock descriptions, a geologic map of the county, a summary of the geology of Kentucky, and a discussion of fossils and prehistoric life in Kentucky.

Previous--Next--Back to "Groundwater Resources in Kentucky"