PROVISIONAL DATA SUBJECT TO REVISION
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LOCATION.--Lat 41°47'37", long
73°56'33" referenced to North American Datum of 1927,
Dutchess County, NY, Hydrologic Unit 02020008, near Hyde
Park.
WELL CHARACTERISTICS.--Depth 126 ft. Upper casing diameter 6 in; top of first opening 76 ft, bottom of last opening 125 ft. Cased to 75 ft, open hole.
DATUM.--Land-surface datum is 168.97 ft above North American Vertical Datum of 1988. Measuring point: Top of extended casing, 3.22 ft above land-surface datum, Oct. 6, 2011 to present; Top of shelter shelf, 3.44 ft above land-surface datum, May. 31, 2016 to present.
PERIOD OF RECORD.--October 1948 to April 1950, April 1953 to September 1997, February 2004 to current year.
REVISIONS HISTORY.--2016: 2014-16.
GAGE.--Water-stage recorder--15 minute; periodic manual measurements by USGS personnel.
REMARKS.--Water level responds to semidiurnal earth tides (approximately 0.05 ft). The wrong measuring point value was used from August 2014 to July 2016. A -.22 ft correction was applied to all published record for that time period. Satellite water-level telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--Highest water level, 64.51 ft below land-surface datum, Apr. 5, 2024; lowest water level, 73.85 ft below land-surface datum, Sept. 13, 1966.
WELL CHARACTERISTICS.--Depth 126 ft. Upper casing diameter 6 in; top of first opening 76 ft, bottom of last opening 125 ft. Cased to 75 ft, open hole.
DATUM.--Land-surface datum is 168.97 ft above North American Vertical Datum of 1988. Measuring point: Top of extended casing, 3.22 ft above land-surface datum, Oct. 6, 2011 to present; Top of shelter shelf, 3.44 ft above land-surface datum, May. 31, 2016 to present.
PERIOD OF RECORD.--October 1948 to April 1950, April 1953 to September 1997, February 2004 to current year.
REVISIONS HISTORY.--2016: 2014-16.
GAGE.--Water-stage recorder--15 minute; periodic manual measurements by USGS personnel.
REMARKS.--Water level responds to semidiurnal earth tides (approximately 0.05 ft). The wrong measuring point value was used from August 2014 to July 2016. A -.22 ft correction was applied to all published record for that time period. Satellite water-level telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--Highest water level, 64.51 ft below land-surface datum, Apr. 5, 2024; lowest water level, 73.85 ft below land-surface datum, Sept. 13, 1966.
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