USGS Water-Year Summary 2024
411421073481202 We-5020, near Yorktown Heights NY
Sand and gravel aquifers (glaciated regions)
Till Deposits
LOCATION - Lat 41°14'21.7", long 73°48'11.8" referenced to North American Datum of 1983, Westchester County, NY, Hydrologic Unit 02030101, near Yorktown Heights.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 24 ft. Upper casing diameter 2 in; top of first opening 9 ft, bottom of last opening 24 ft.
DATUM - Land-surface datum is 251.31 ft above North American Vertical Datum of 1988. Measuring point: Top of extended casing, 3.38 ft above land-surface datum, Aug. 16, 2016 to May. 11, 2021; Top of extended casing, 3.36 ft above land-surface datum, May. 11, 2021 to present.
PERIOD OF RECORD - July 2003 to current year.
GAGE - Water-stage recorder--15 minute; periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 4.63 ft below land-surface datum, Apr. 19, 2007; lowest water level, 17.96 ft below land-surface datum, Nov. 30, Dec. 1, 2, 2016.