LOCATION.--Lat 41°49'48", long 74°03'50" referenced to North American Datum of 1983, Ulster County, NY, Hydrologic Unit 02020007, Grist Mill Road, at Tillson.
WELL CHARACTERISTICS.--Depth 41 ft. Upper casing diameter 2 in; top of first opening 32 ft, bottom of last opening 37 ft. Cased to 32 ft (screen, 32 ft to 37 ft).
DATUM.--Land-surface datum is 236.41 ft above North American Vertical Datum of 1988. Measuring point: Top of casing, 3.41 ft above land-surface datum, Jul. 29, 2002 to Jul. 14, 2012; Top of shelter shelf, 3.45 ft above land-surface datum, Aug. 20, 2013 to present.  
PERIOD OF RECORD.--July 2002 to current year.
GAGE.--Water-stage recorder--15 minute; periodic manual measurements by USGS personnel.
REMARKS.--Well was drilled in 2002 as a replacement for 414948074035101 (local number U 405), located about 3 ft west, which had a period of record from October 1964 to July 1965, March 1966 to December 1974, April 1976 to August 1995. Satellite water-level telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--Highest water level, 13.71 ft below land-surface datum, Sept. 13, 2011; lowest water level, 20.76 ft below land-surface datum, Oct. 10, 11, 2002.

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