LOCATION.--Lat 43°01'20.8", long 74°52'30.3" referenced to North American Datum of 1983, Herkimer County, NY, Hydrologic Unit 02020004, at Little Falls.
WELL CHARACTERISTICS.--Depth 97 ft. Upper casing diameter 6 in; top of first opening 37 ft, bottom of last opening 94 ft. Well filled in from original depth of 100 ft, cased to 21 ft, open hole.
DATUM.--Land-surface datum is 426.4 ft above North American Vertical Datum of 1988. Measuring point: Top of casing, 6.15 ft above land-surface datum, Jul. 27, 2009 to present; Top of shelter shelf, 6.3 ft above land-surface datum, Nov. 2, 2016 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, 33.34 ft below land-surface datum, June 28, 2013; lowest water level recorded, 66.55 ft below land-surface datum, Aug. 14, 2011, but may have been lower during period of instrument malfunction.

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