USGS Water-Year Summary 2024
424560074274101 Local number, So-528, Carlisle, NY
New York and New England carbonate-rock aquifers
Helderberg Group
LOCATION - Lat 42°45'59.4", long 74°27'49.4" referenced to North American Datum of 1983, Schoharie County, NY, Hydrologic Unit 02020004, at Carlisle.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 74 ft. Upper casing diameter 6 in; top of first opening 48.5 ft, bottom of last opening 74 ft.
DATUM - Land-surface datum is 1,246.2 ft above North American Vertical Datum of 1988. Measuring point: Top of shelter shelf, 1.74 ft above land-surface datum, Jun. 2, 2017 to Jan. 14, 2020; Top of shelter shelf, 1.73 ft above land-surface datum, Jan. 14, 2020 to Oct. 20, 2020; Top of shelter shelf, 1.74 ft above land-surface datum, Oct. 20, 2020 to present.
PERIOD OF RECORD - June 2017 to current year.
GAGE - Water-stage recorder--15 minute; periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 26.54 ft below land-surface datum, Apr. 3, 4, 2023; lowest water level, 35.89 ft below land-surface datum, Oct. 29, 2017.