PROVISIONAL DATA SUBJECT TO REVISION
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Site Information
LOCATION.--Lat 41°14'21.7", long
73°48'11.8" referenced to North American Datum of
1983, Westchester County, NY, Hydrologic Unit 02030101, near
Yorktown Heights.
WELL CHARACTERISTICS.--Depth 24 ft. Upper casing diameter 2 in; top of first opening 9 ft, bottom of last opening 24 ft.
DATUM.--Land-surface datum is 251.31 ft above North American Vertical Datum of 1988. Measuring point: Top of extended casing, 3.38 ft above land-surface datum, Aug. 16, 2016 to May. 11, 2021; Top of extended casing, 3.36 ft above land-surface datum, May. 11, 2021 to present.
PERIOD OF RECORD.--July 2003 to current year.
GAGE.--Water-stage recorder--15 minute; periodic manual measurements by USGS personnel.
REMARKS.--Satellite water-level telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--Highest water level, 4.63 ft below land-surface datum, Apr. 19, 2007; lowest water level, 17.96 ft below land-surface datum, Nov. 30, Dec. 1, 2, 2016.
WELL CHARACTERISTICS.--Depth 24 ft. Upper casing diameter 2 in; top of first opening 9 ft, bottom of last opening 24 ft.
DATUM.--Land-surface datum is 251.31 ft above North American Vertical Datum of 1988. Measuring point: Top of extended casing, 3.38 ft above land-surface datum, Aug. 16, 2016 to May. 11, 2021; Top of extended casing, 3.36 ft above land-surface datum, May. 11, 2021 to present.
PERIOD OF RECORD.--July 2003 to current year.
GAGE.--Water-stage recorder--15 minute; periodic manual measurements by USGS personnel.
REMARKS.--Satellite water-level telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--Highest water level, 4.63 ft below land-surface datum, Apr. 19, 2007; lowest water level, 17.96 ft below land-surface datum, Nov. 30, Dec. 1, 2, 2016.
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