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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
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USGS Water-Year Summary 2024
394624075444001 CH 2663
Piedmont and Blue Ridge carbonate-rock aquifers
Cockeysville Marble
Cockeysville Marble
LOCATION - Lat 39°46'25.1", long 75°44'40.3" referenced to North American Datum of 1983, Chester County, PA, Hydrologic Unit 02040205, at Broad Run Road and Newark Road, New Garden Township.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 150 ft. Upper casing diameter undefined; top of first opening undefined, bottom of last opening undefined. Drilled unused observation well.
DATUM - Land-surface datum is 220 ft above National Geodetic Vertical Datum of 1929. Measuring point: top of plywood shelf; MODIFIED DATE FOR AQ MIGRATION; 01/19/1984, 1.3 ft above land-surface datum, Jan. 11, 1984 to May. 22, 2001; top of casing, 2.2 ft above land-surface datum, May. 21, 2001 to present. Prior to May 21, 2001 measuring point was 1.30 ft above land-surface datum.
PERIOD OF RECORD - January 1984 to May 2016.
GAGE - Monthly measurement by U.S. Geological Survey personnel.
COOPERATION - Station established and maintained by the U.S. Geological Survey in cooperation with the Chester County Water Resources Authority.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 7.65 ft below land-surface datum, Sept. 23, 2003; lowest, 11.67 ft below land-surface datum, July 18, 1985.
