PROVISIONAL DATA SUBJECT TO REVISION
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Site Information
LOCATION.--Lat 40°40'31", long
73°38'27" referenced to North American Datum of 1927,
Nassau County, NY, Hydrologic Unit 02030202, at west side of
North Village Avenue, 54 ft north of Demott Avenue, Rockville
Centre.
WELL CHARACTERISTICS.--Depth 645 ft. Upper casing diameter 4 in; top of first opening 620 ft, bottom of last opening 640 ft. Datum of gage is NGVD of 1929.
PERIOD OF RECORD.--March 1993 to March 1998, September 2003 to current year.
GAGE.--Water-level recorder installed September 2003; 15-minute recording interval. Periodic manual measurements made by USGS personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level recorded, 21.01 ft above NGVD 29, April 3, 2010; lowest recorded, 12.14 ft above NGVD 29, August 30, 2016.
WELL CHARACTERISTICS.--Depth 645 ft. Upper casing diameter 4 in; top of first opening 620 ft, bottom of last opening 640 ft. Datum of gage is NGVD of 1929.
PERIOD OF RECORD.--March 1993 to March 1998, September 2003 to current year.
GAGE.--Water-level recorder installed September 2003; 15-minute recording interval. Periodic manual measurements made by USGS personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level recorded, 21.01 ft above NGVD 29, April 3, 2010; lowest recorded, 12.14 ft above NGVD 29, August 30, 2016.
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