PROVISIONAL DATA SUBJECT TO REVISION
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LOCATION.--Lat 41°06'03.1", long
72°20'00.2" referenced to North American Datum of
1983, Suffolk County, NY, Hydrologic Unit 02030202, at north
side of Westview Road, 99 ft west of Crescent Drive, Shelter
Island.
WELL CHARACTERISTICS.--Depth 76 ft. Upper casing diameter 6 in; top of first opening 64 ft, bottom of last opening 74 ft.
DATUM.--Land-surface datum is 55.1 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of steel flange, 1.93 ft below land-surface datum, 53.17 ft above National Geodetic Vertical Datum of 1929, Feb. 28, 1974 to present.
PERIOD OF RECORD.--June 1974 to current year.
GAGE.--Water level recorder installed July 2022 to June 2024;15-minute recording interval. Periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 5.65 ft above NGVD of 1929, Apr. 20, 2010; lowest measured, 0.88 ft above NGVD of 1929, Mar. 2, 1983.
WELL CHARACTERISTICS.--Depth 76 ft. Upper casing diameter 6 in; top of first opening 64 ft, bottom of last opening 74 ft.
DATUM.--Land-surface datum is 55.1 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of steel flange, 1.93 ft below land-surface datum, 53.17 ft above National Geodetic Vertical Datum of 1929, Feb. 28, 1974 to present.
PERIOD OF RECORD.--June 1974 to current year.
GAGE.--Water level recorder installed July 2022 to June 2024;15-minute recording interval. Periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 5.65 ft above NGVD of 1929, Apr. 20, 2010; lowest measured, 0.88 ft above NGVD of 1929, Mar. 2, 1983.
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