USGS Water-Year Summary 2024
405030073180601 S 65602. 1
Northern Atlantic Coastal Plain aquifer system
Glacial Aquifer, Upper
LOCATION - Lat 40°50'27.9", long 73°18'04.4" referenced to North American Datum of 1983, Suffolk County, NY, Hydrologic Unit 02030202, at east side of Willshire Drive, 35 ft south of Renee Place, Commack.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 96 ft. Upper casing diameter 2 in; top of first opening 91 ft, bottom of last opening 96 ft.
DATUM - Land-surface datum is 146 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of coupling, 0.19 ft below land-surface datum, 145.81 ft above National Geodetic Vertical Datum of 1929, Aug. 15, 1979 to present.
PERIOD OF RECORD - September 1978 to current year.
GAGE - Water-level recorder installed August 2014; 15-minute recording interval. Periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 77.09 ft above NGVD of 1929, Apr. 22, 2010; lowest recorded, 69.02 ft above NGVD of 1929, Mar. 22, 2017.