USGS Water-Year Summary 2024
390151076561501 PG Bc 16
Northern Atlantic Coastal Plain aquifer system
Patuxent Formation
LOCATION - Lat 39°01'51.87", long 76°56'13.94" referenced to North American Datum of 1983, Prince George's County, MD, Hydrologic Unit 02070010, at National Agricultural Research Center, Beltsville.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 27.4 ft. Upper casing diameter 40 in; top of first opening undefined, bottom of last opening undefined. Dug, brick-lined, observation, water-table well.
DATUM - Land-surface datum is 188.29 ft above North American Vertical Datum of 1988. Measuring point: Top of recorder shelter shelf, 3.11 ft above land-surface datum, Oct. 14, 2009 to present.
PERIOD OF RECORD - September 1962 to current year.
GAGE - Water level measurements by U.S. Geological Survey personnel. Equipped with graphic water-level recorder October 1962 to February 1965 and digital water-level recorder October 2009 to October 2012.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 16.99 ft below land surface, March 29, 2019; lowest measured, 26.46 ft below land surface, July 8, 1981.