USGS Water-Year Summary 2024
410253072192601 S 90279. 1
Northern Atlantic Coastal Plain aquifer system
Glacial Aquifer, Upper
LOCATION - Lat 41°02'52.4", long 72°19'32.7" referenced to North American Datum of 1983, Suffolk County, NY, Hydrologic Unit 02030202, at east side of Osprey Road, 87 ft south of Heron Lane, Shelter Island.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 22.5 ft. Upper casing diameter 2 in; top of first opening 20.5 ft, bottom of last opening 22.5 ft.
DATUM - Land-surface datum is 20 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, 0.35 ft below land-surface datum, 19.65 ft above land-surface datum, Mar. 21, 1990 to present.
PERIOD OF RECORD - March 1990 to current year.
GAGE - Measurement with chalked steel tape by United States Geological Survey personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 3.84 ft above sea level, April 7, 2010; lowest measured, 0.72 ft above sea level, December 13, 2007.