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Coal Borehole Data

The Kentucky Geological Survey (KGS) has compiled more than 9,000 borehole records into the KCRIS database. The records have been voluntarily contributed by coal companies, the U.S. Geological Survey, and other government agencies. This database represents a small fraction of the coal exploration boreholes drilled in Kentucky. KGS is continually adding new records to the database, as well as correlating existing logs and attaching stratigraphic tags to selected coal beds and other stratigraphic horizons.

The coal borehole database is searchable on the KGS Web site. Header information is downloadable. The user can select coordinate information, county, surface elevation, and depth. Lithology information is downloadable; it includes bed thicknesses along with lithologic descriptions of the beds and seam correlations. The lithologic descriptions are listed by numeric rock codes (the Ferm codes), as well as English names. The Ferm codes are derived from the core-logging manual, "Cored Rocks of the Southern Appalachian Coal Fields," by J.C. Ferm and G.A. Weisenfluh. Some borehole records may contain coal bed correlations determined by KGS geologists (stratigraphic tags for eastern and western Kentucky). All of the information available on the KGS Web site is free.

Hard-copy printouts of geologist's or driller's logs, graphic striplogs of borehole records, and custom data location maps are also available to the public for a fee. Prices can be found in the pamphlet Coal Data and Publications. To obtain this information, contact KGS Publication Information Center.

Although the staff of KGS has made every effort to ensure that the data reflect information on file, the Kentucky Geological Survey makes no warranty, expressed or implied, concerning the accuracy or validity of these data. The user assumes all liability for any losses or damages that may be incurred through any use or application of these data. Users are requested to notify KGS upon discovery of any errors in the data supplied.

If you have any additional questions or would like to supply information that would improve the accuracy or completeness of the existing data, please contact Bethany Overfield or Jerry Weisenfluh at the Kentucky Geological Survey at 859.257.5500.