PROVISIONAL DATA SUBJECT TO REVISION
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LOCATION.--Lat 40°35'17.0", long
73°43'04.5" referenced to North American Datum of
1983, Nassau County, NY, Hydrologic Unit 02030202, Located at
pumping center, 0.1 mile west of end of Park Street, 300 feet
north of Beech Street, in Eastern most recorder shelter,
Atlantic Beach.
WELL CHARACTERISTICS.--Depth 677 ft. Upper casing diameter 4 in; top of first opening 666 ft, bottom of last opening 677 ft.
DATUM.--Land-surface datum is 10.8 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of coupling, 1.24 ft above land-surface datum, 12.04 ft above land-surface datum, Aug. 31, 1959 to Jul. 18, 2015; Top of 4 in. steel casing, 12.07 ft above land-surface datum, Jul. 17, 2015 to present.
PERIOD OF RECORD.--September 1959 to September 2010, July 2011 to October 2014, February 2015 to November 2015, and February 2016 to current year. Unpublished records for September 1959 to September 1975 are available in files of the U.S. Geological Survey.
GAGE.--Water-level recorder installed October 2003; 15-minute recording interval. Periodic manual measurements made by USGS personnel.
REMARKS.--Water level affected by tidal fluctuation and nearby pumping. Highest water-level recorded on October 29, 2012 attributed to tidal forcing from Hurricane Sandy storm tide.
EXTREMES FOR PERIOD OF RECORD.--Highest water level recorded, 2.30 ft above NGVD of 1929, Oct. 29, 2012; lowest measured, 6.58 ft below NGVD of 1929, Nov. 30, 1972.
WELL CHARACTERISTICS.--Depth 677 ft. Upper casing diameter 4 in; top of first opening 666 ft, bottom of last opening 677 ft.
DATUM.--Land-surface datum is 10.8 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of coupling, 1.24 ft above land-surface datum, 12.04 ft above land-surface datum, Aug. 31, 1959 to Jul. 18, 2015; Top of 4 in. steel casing, 12.07 ft above land-surface datum, Jul. 17, 2015 to present.
PERIOD OF RECORD.--September 1959 to September 2010, July 2011 to October 2014, February 2015 to November 2015, and February 2016 to current year. Unpublished records for September 1959 to September 1975 are available in files of the U.S. Geological Survey.
GAGE.--Water-level recorder installed October 2003; 15-minute recording interval. Periodic manual measurements made by USGS personnel.
REMARKS.--Water level affected by tidal fluctuation and nearby pumping. Highest water-level recorded on October 29, 2012 attributed to tidal forcing from Hurricane Sandy storm tide.
EXTREMES FOR PERIOD OF RECORD.--Highest water level recorded, 2.30 ft above NGVD of 1929, Oct. 29, 2012; lowest measured, 6.58 ft below NGVD of 1929, Nov. 30, 1972.
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