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USGS 403727073154601 S 21091. 1

PROVISIONAL DATA SUBJECT TO REVISION

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> Site Information
LOCATION.--Lat 40°37'28.3", long 73°15'46.2" referenced to North American Datum of 1983, Suffolk County, NY, Hydrologic Unit 02030202, at Robert Moses State Park, in water treatment building, Fire Island.
WELL CHARACTERISTICS.--Depth 1,921 ft. Upper casing diameter 6 in; top of first opening 1,918 ft, bottom of last opening 1,921 ft. Datum of gage is NGVD of 1929.
DATUM.--Land-surface datum is 8.82 ft above North American Vertical Datum of 1988. Measuring point: Top of casing, 13.68 ft above land-surface datum, 23.68 ft above National Geodetic Vertical Datum of 1929, Jun. 3, 1965 to Feb. 6, 2024; Top of blue casing, 23.812 ft above National Geodetic Vertical Datum of 1929, Feb. 6, 2024 to May 7, 2024; Top of blue casing, 22.66 ft above North American Vertical Datum of 1988, May 7, 2024 to present.  
PERIOD OF RECORD.--January 1968 to current year. Unpublished records for September 1962 to September 1975 are available in files of the U.S. Geological Survey.
GAGE.--Water-level recorder installed October 1994 to January 2000, May 2001 to current year. Periodic manual measurements made by USGS personnel.
REMARKS.--Water level affected by tidal fluctuation. Cellular water-level telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--Highest water level recorded, 22.56 ft above NGVD 29, Apr. 16, 2007; lowest measured, 15.13 ft above NGVD 29, June 2, 1972.
> Rating Information
This station managed by the NY Water Science Center Coram.

Available Parameters Period of Record
  
1984-08-01  2024-09-10
1994-10-01  2024-12-03








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Groundwater level above NGVD 1929, feet


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Groundwater level above NAVD 1988, feet


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