USGS Water-Year Summary 2024
440114075453701 J-178, at Felts Mills NY
New York and New England carbonate-rock aquifers
Trenton-Black River Group
LOCATION - Lat 44°01'13.9", long 75°45'37.2" referenced to North American Datum of 1983, Jefferson County, NY, Hydrologic Unit 04150101, at Felts Mills.
REVISIONS HISTORY - Datum revised on Aug. 26, 2022. The datum was originally reported as 611.74 ft above NGVD of 1929, and corrected to 618.05 ft above NAVD of 1988.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 45.3 ft. Upper casing diameter 6 in; top of first opening 21 ft, bottom of last opening 25 ft. Cased to 20.0 ft, open hole.
DATUM - Land-surface datum is 618.05 ft above North American Vertical Datum of 1988. Measuring point: Top of extended-casing coupling, 2.41 ft above land-surface datum, Sep. 18, 2013 to present.
PERIOD OF RECORD - October 2008 to current year.
GAGE - Water-stage recorder--15 minute; periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level (water years 2009-10, 2012, 2014-23), 10.42 ft below land-surface datum, Oct. 30, 2017; lowest water level (water years 2009-10, 2012, 2014-23), 23.67 ft below land-surface datum, Sept. 29, 2020.