STATION.--395450075485401 CHESTER COUNTY, local well number CH10
LOCATION.--Lat 39`54'49.4", long 75`48'51.1", Hydrologic Unit 02040205, near intersection of SR 82 and 841, at Doe Run.
OWNER.--Privately owned.
AQUIFER.--Cockeysville Marble of Paleozoic age.
WELL CHARACTERISTICS.--Drilled unused water-table well, diameter 6 in, depth 34 ft, cased to 18 ft, open hole.
INSTRUMENTATION.--Data collection platform with 60-minute recording interval. Satellite telemetry at station.
DATUM.--Elevation of land surface is 293 ft above North American Vertical Datum of 1988, from Lidar. Measuring point: Top of plywood shelf, 5.2 ft above land-surface datum. Prior to June 24, 1981, top of casing 1.00 ft above land-surface datum.
REMARKS.--Daily maximum, minimum, and mean water levels since October 1994 are available from the District Office.
PERIOD OF RECORD.--August 1951 to April 1965, instantaneous water levels obtained several times per month. February 1966 to current year.
COOPERATION.--Funding for the operation of this station is provided by the U.S. Geological Survey.

This gage is monitored as part of the National Groundwater and Streamflow Information Program.