Hopkins map 1966

<div>The Fresh-Saline Water Interface:</div><div><br /></div><div>The fresh-saline water interface is the physical boundary above which water is classified as fresh and below which water is classified as saline. The interface is not a plane but a zone of varying thickness ranging from less than 100 feet throughout most of Kentucky to more than 500 feet in parts of the Blue Grass region. The chemical change within this zone is gradational rather than abrupt and is best detected by chemical analysis. The depth of the interface ranges from less than 200 feet below land surface in many areas of the State to more than 2,000 feet below land surface in several areas in the western and southeastern parts of the State (Hopkins, 1966).</div><div><br /></div><div>These data were captured from a scanned map from The Fresh-Saline Interface in Kentucky, H.T. Hopkins, USGS, 1966, and are considered legacy data. No new information or well control was added to the contours and are presented as is.<br /></div>