STATION.--395512075293701 DELAWARE COUNTY, local well number DE723
LOCATION.--Lat 39 55'12.3", long 75 29'35.0", Hydrologic Unit 02040203, at Glen Mills School, in Thornbury Township.
OWNER.--Glen Mills School.
AQUIFER.--Felsic Hornblende bearing Gneiss of Precambian Age.
WELL CHARACTERISTICS.--Drilled unused well, diameter 6 in., depth 300 ft, casing information not available.
INSTRUMENTATION.--Data collection platform with 60-minute recording interval. Satellite telemetry at station.
DATUM.--Elevation of land surface is 282 ft above North American Vertical Datum of 1988, from Lidar. Measuring point: Top of plywood shelf, 2.7 ft above land-surface datum. Prior to May 11, 1984, top of plywood shelf 1.20 ft above land-surface datum.
REMARKS.--Daily maximum, minimum, and mean water levels since October 1994 are available from the District Office.
PERIOD OF RECORD.--April 1983 to current year.
COOPERATION.--Funding for the operation of this station is provided by the Pennsylvania Department of Environmental Protection and the U.S. Geological Survey.