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LOCATION--Lat 42°35'06.1", long 70°49'14",
Essex County, Hydrologic Unit 01090001, 45 ft west of State Highway 128
and 120 ft northeast of Grapevine Road in Wenham, MA.
AQUIFER--Sand and gravel, glaciated regions; outwash deposits.
WELL CHARACTERISTICS--Drilled observation water-table well, depth 21.97 ft, screened 18.8 ft to 21.8 ft.
INSTRUMENTATION--Digital recorder with cellular telephone telemeter, May 2012 to July 2018 (WPW 76), July 2018 to current year (WPW 76R). Monthly measurements prior to May 2012.
DATUM--Elevation of land-surface datum of well is 50.12 ft above North American Vertical Datum of 1988, from topographic map. Measuring point: top of well casing, 2.82 ft above land-surface datum.
PERIOD OF RECORD-- November 1964 to current year.
COOPERATION BY--Massachusetts Department of Conservation and Recreation, Office of Water Resources.