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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.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
410349072222201 S 51169. 1
Northern Atlantic Coastal Plain aquifer system
Glacial Aquifer, Upper
Glacial Aquifer, Upper
LOCATION - Lat 41°03'49.8", long 72°22'20.5" referenced to North American Datum of 1983, Suffolk County, NY, Hydrologic Unit 02030202, at west side of Rocky Point Avenue, 400 ft south of Belvedere Avenue, West Neck, Shelter Island.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 56 ft. Upper casing diameter 6 in; top of first opening 44 ft, bottom of last opening 54 ft.
DATUM - Land-surface datum is 32.3 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of steel flange, 1.82 ft below land-surface datum, 30.48 ft above National Geodetic Vertical Datum of 1929, Oct. 22, 1969 to present.
PERIOD OF RECORD - June 1974 to current year.
GAGE - Water level recorder installed November 2022 to June 2024; 15-minute recording interval. Periodic manual measurements by USGS personnel.
REMARKS - Water level affected by tidal fluctuation.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 4.47 ft above NGVD of 1929, Apr. 7, 2010; lowest measured, 0.98 ft above NGVD of 1929, Dec. 21, 1976.
