USGS Water-Year Summary 2024
400916076492301 YO 1147
Early Mesozoic basin aquifers
Gettysburg Shale
LOCATION - Lat 40°09'17.9", long 76°49'22.5" referenced to North American Datum of 1983, York County, PA, Hydrologic Unit 02050305, at I83 south rest stop between exits 34 and 35.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 182 ft. Upper casing diameter 6 in; top of first opening 41 ft, bottom of last opening 182 ft. Drilled observation well, cased to 41 ft, open hole.
DATUM - Land-surface datum is 470 ft above North American Vertical Datum of 1988. Measuring point: top of instrument shelf; MODIFIED DATE FOR AQ MIGRATION; 03/07/2001, 2.25 ft above land-surface datum, May. 18, 1986 to present. Elevation of land surface is from Lidar.
PERIOD OF RECORD - March 7, 2001 to current year.
GAGE - Data collection platform with 15-minute recording interval since April 2023; prior, 60-minute recording interval. Satellite telemetry at station.
COOPERATION - Site maintained in cooperation with the Pennsylvania Department of Environmental Protection and the U.S. Geological Survey.
EXTREMES FOR PERIOD OF RECORD - The extremes shown are extremes of the instantaneous depth below land surface for the period of record indicated above. Highest water level, 15.69 ft below land-surface datum, Nov 26, 2018; lowest, 38.90 ft below land-surface datum, Sep 24, 2002.