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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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USGS Water-Year Summary 2024
410602072195801 S 51182. 1
Northern Atlantic Coastal Plain aquifer system
Glacial Aquifer, Upper
Glacial Aquifer, Upper
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.
GROUNDWATER RECORDS
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 land-surface datum, Feb. 28, 1974 to present.
PERIOD OF RECORD - June 1974 to April 1984, March 1990, March 1994 to March 1995, and April 2006 to current year.
GAGE - Measurement with chalked steel tape by United States Geological Survey personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 5.65 ft above NGVD 1929, April 20, 2010; lowest measured, 0.88 ft above NGVD 1929, March 2, 1983.
