USGS Water-Year Summary 2019
424136075025101 Og-23, near Hartwick NY
Sand and gravel aquifers (glaciated regions)
Ice-Contact Deposits, Pleistocene
LOCATION - Lat 42°41'36", long 75°02'51" referenced to North American Datum of 1927, Otsego County, NY, Hydrologic Unit 02050101, at "Wild Creek Farm", 0.6 mi northeast of intersection of State Highway 205 and Kallan Road, 2.2 mi north of Hartwick, and 3.2 mi southeast of Oaksville.
WELL CHARACTERISTICS - Depth 15 ft. Upper casing diameter 36 in; top of first opening 15 ft, bottom of last opening 15 ft. Cased to 15 ft (stone lined). Elevation of land-surface datum is 1,432.44 ft above NGVD of 1929 and 1,432.01 ft above NAVD of 1988 (VERTCON).
DATUM - Land-surface datum is 1,432.44 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of concrete cover, 0.06 ft below land-surface datum, May 17, 2017 to present.
PERIOD OF RECORD - May 1953 to August 1995, January 1997 to current year. Records for May 1953 to September 1976 are available in files of the U.S. Geological Survey.
GAGE - Water-stage recorder--15 minute; periodic measurement by USGS personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 2.24 ft below land-surface datum, June 28, 2006; lowest water level measured, 12.66 ft below land-surface datum, Nov. 14, 1964.