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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
405308072553102 S 6413. 2
Northern Atlantic Coastal Plain aquifer system
Glacial Aquifer, Upper
Glacial Aquifer, Upper
LOCATION - Lat 40°53'08.7", long 72°55'29.0" referenced to North American Datum of 1983, Suffolk County, NY, Hydrologic Unit 02030202, south side of Route 25, 76 ft east of Woodville Road.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 110 ft. Upper casing diameter 2 in; top of first opening 100 ft, bottom of last opening 105 ft.
DATUM - Land-surface datum is 94.1 ft above North American Vertical Datum of 1988. Measuring point: Top of casing, 1.14ft above land-surface datum, 95.14 ft above National Geodetic Vertical Datum of 1929, Jun. 9, 2005 to May 2, 2018; Top of 2 inch PVC casing 0.23 FT below top of curb box, 95.22 ft above National Geodetic Vertical Datum of 1929, May 1, 2018 to Sep. 25, 2024; North side top of 2" PVC casing, 95.8 ft above North American Vertical Datum of 1988, Sep. 25, 2024 to present.
PERIOD OF RECORD - August 2005 to July 2023, October 2024 to current year.
GAGE - Water-level recorder installed February 2018 to July 2023 and October 2024 to current year; 15-minute recording interval. Periodic manual measurements by USGS personnel.
REMARKS - Replaces well S6413.1 in August 2005 near same location.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 54.26 ft above NGVD of 1929 (53.25 ft above NAVD of 1988), Apr. 19, 2010; lowest measured, 44.42 ft above NGVD of 1929 (43.41 ft above NAVD of 1988), Dec. 28, 2017.
