USGS Water-Year Summary 2024
402207076180801 LB 372
Valley and Ridge aquifers
Ontelaunee Formation
LOCATION - Lat 40°22'07.5", long 76°18'06.2" referenced to North American Datum of 1983, Lebanon County, PA, Hydrologic Unit 02040203, at Myerstown.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 37 ft. Upper casing diameter 6 in; top of first opening undefined, bottom of last opening undefined.
Well depth originally reported as 80 ft; soundings in June 1997 found the depth was 37 ft. Drilled unused well, casing information not available, open hole.
DATUM - Land-surface datum is 442.76 ft above North American Vertical Datum of 1988. Measuring point: top of casing, 3.5 ft above land-surface datum, Jul. 1, 1973 to Apr. 22, 1981; top of plywood shelf, 2.7 ft above land-surface datum, Apr. 22, 1981 to present. Elevation of land surface is from survey.
PERIOD OF RECORD - July 1973 to current year.
GAGE - Data collection platform with 15-minute recording interval since April 2023; prior, 30-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 - Prior to October 2000, the extremes were based on extremes of the daily maximum depth below land-surface datum. Since that date, the extremes are based on the instantaneous depth below land-surface datum. Highest water level, 1.98 ft above land-surface datum, Sep 8, 2011; lowest, 11.55 ft below land-surface datum, Jan 8, 2002.