Ground Water Atlas of the United States: Segment 10, Illinois, Indiana, Kentucky, Ohio, Tennessee

This report provides a summary of ground-water conditions and problems in Illinois, Indiana, Kentucky, Ohio, and Tennessee, which compose Segment 10 of the Ground Water Atlas of the United States, an area of about 217,000 square miles. The definition, distribution, thickness, water-yielding, and water-quality characteristics of the principal aquifers in the segment are the primary topics of this chapter. Ground-water source, occurrence, movement, use, and problems also are discussed where appropriate.

Segment 10 consists of parts of seven physiographic provinces (fig. 1)- the Coastal Plain, Blue Ridge, Valley and Ridge, Appalachian Plateaus, Interior Low Plateaus, Central Lowland, and Ozark Plateaus. The provinces have unique hydrogeologic characteristics that make it convenient to describe the principal aquifers in each province.