PROVISIONAL DATA SUBJECT TO REVISION
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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.Notice:
Period of record water-level data for this site are now being published using the datum reference feet below land surface.
In order to convert the published values to a level in feet related to sea level, subtract the land surface data values from the altitude of land surface at this location, 129.40 (ft NGVD29).
The hydrograph below displays both feet below land surface and sea level scales on the dual Y-axes.
Summary of all available data for this site
Instantaneous-data availability statement
