STATION.--403429075392401 LEHIGH COUNTY, local well number LE 644
LOCATION.--Lat 40`34'30.4", long 75`39'22.4", Hydrologic Unit 02040106, at Haafsville.
OWNER.--Privately owned.
AQUIFER.--Beekmantown Group of Middle Ordovician age.
WELL CHARACTERISTICS.--Drilled observation observation well, diameter 10 in, depth 184 ft, cased to 63 ft, open hole.
INSTRUMENTATION.--Data collection platform with 15-minute recording interval since June 2023; prior, 60-minute recording interval. Satellite telemetry at station.
DATUM.--Elevation of land surface is 473 ft above North American Vertical Datum of 1988, from Lidar. Measuring point: Top of plywood shelf, 2.65 ft above land-surface datum. Prior to Mar. 18, 1981, top of casing, 1.45 ft above land-surface datum.
REMARKS.--Daily maximum, minimum, and mean water levels since October 1994 and water-quality records for 1973-75 are available from the District Office.
PERIOD OF RECORD.--January 1971 to current year.
COOPERATION.--Funding for the operation of this station is provided by the Pennsylvania Department of Environmental Protection and the U.S. Geological Survey.