A serial number following the last letter is used to distinguish between wells located in the same 2.5-acre tract. The head value in each well. Head is equal to the altitude of land surface minus the water level. The arithmetic mean of multiple head values for the same well. Multiple head measurements exist when multiple water-level measurements were taken.
Unique code identifying the principal hydrogeologic unit the well is open to.
The accuracy of the measured latitude and longitude. When the accuracy was not known, the attribute was left blank. If a log was not available, the attribute was left blank. Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.