LOCATION.--Lat 38°24'08.1", long 76°26'04.6", Hydrologic Unit 02060004, 
   at Calvert Cliffs State Park.
WELL CHARACTERISTICS.--Depth 698 ft. Upper casing diameter 4 in; top of first opening 641 ft, 
   bottom of last opening 651 ft.   Drilled, observation, artesian well. 
GAGE.--Monthly measurements with electric tape by U.S. Geological Survey personnel. Equipped with 
   digital water-level recorder --30- minute recording interval, March 3, 2004 to current year. 
   U.S. Geological Survey satellite data-collection platform at well. 
DATUM.--Elevation of land surface is 129.4 ft above National Geodetic 
   Vertical Datum of 1929. Measuring point: Top of shelter platform, 3.10 ft above land surface.
REMARKS.--Maryland Groundwater-Level Network observation well. Water levels are affected 
   by local and regional groundwater withdrawal. 
PERIOD OF RECORD.--October 1978 to current year.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 21.26 ft below sea level, April 21, 1980; 
   lowest measured, 113.42 ft below sea level, October 6, 2007 (recorder). 
COOPERATION.--Funding for the operation of this station is provided by the Calvert 
   County Department of Public Works, the Maryland Geological Survey and the U. S. Geological Survey.