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[!] Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.

USGS 395512075293701 DE 723 Delaware County Observation Well


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Station gage imageSTATION.--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.
This station managed by the PAWSC Downingtown Field Office.

Available Parameters Period of Record
1983-04-08  2024-04-17


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Depth to water level, feet below land surface

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