USGS Water-Year Summary 2024
415552070031702 MA-WNW 159-0012 WELLFLEET, MA
Sand and gravel aquifers (glaciated regions)
Stratified Deposits, Undifferentiated
LOCATION - Lat 41°55'51.99", long 70°03'17.03" referenced to North American Datum of 1983, Barnstable County, MA, Hydrologic Unit 01090002,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 11.79 ft. Upper casing diameter 2 in; top of first opening 6.79 ft, bottom of last opening 11.79 ft.
DATUM - Land-surface datum is 3.34 ft above North American Vertical Datum of 1988. Measuring point: Black Mark top of PVC casing, 3.1 ft above land-surface datum, May. 31, 2017 to present.
PERIOD OF RECORD - June 2017 to August 2022.
GAGE - Vented pressure transducer. Barometric pressure datalogger recorder.
EXTREMES FOR PERIOD OF RECORD - Highest daily water level, 0.61 ft below land-surface datum, Mar. 08, 2018; lowest daily water level, 2.40 ft below land surface datum, Sept. 13 & 14, 2020.