USGS - science for a changing world

MD-DE-DC Water Science Center

Home >> Water Data >> Groundwater Information >> Confined Aquifers >> Calvert County, MD

Conditions as of June 30, 2007

Map of Maryland and Delaware counties, name labeled, clickable imagemap

Local Number   

Well Depth 

aquifer

Period of Record

CA Gd 6

493 ft

Aquia Formation of Upper Paleocene age

October 1949 to current year

CA Gd 6

WELL NAME

CA Gd 6

SITE ID

381952076270901

LOCATION

Lat 38°19´52", long 76°27´09", Hydrologic Unit 02060006, at the Lord Calvert Yacht Club, 0.5 mi northeast of Solomons. Owner: Calvert Marina.

AQUIFER

Aquia Formation of Upper Paleocene age. Aquifer code: 125AQUI.

INSTRUMENTATION

Monthly measurements with chalked steel tape by U.S. Geological Survey personnel. Equipped with a graphic water-level recorder from Oct. 19, 1949 to Feb. 25, 1960.

CHARACTERISTICS

Drilled, observation, artesian well, depth 493 ft; casing diameter 8 in., to 272 ft; casing diameter 6 in. from 272 to 472 ft; screened from 472 to 493 ft.

DATUM

Elevation of land surface is 12.73 ft above sea level. Measuring Point: Top of manhole rim, 6.59 ft above land surface.

REMARKS

Maryland Water-Level Network observation well. Water level reported at land surface in 1942; water-level measured 58.9 ft below land surface, Jan 13, 1944. Well not measured from April through July 1988 during building construction at well site. On July 18, 1991 the water-level measured 119.93 ft below land surface during an extended pumping period. Water levels are affected by local and regional ground-water withdrawal.

PERIOD OF RECORD

October 1949 to current year.

EXTREMES FOR RECORD

Highest water level measured, 26.15 ft below land surface, May 18 1950; lowest measured, 168.63 ft below land surface, July 20, 1999.

COOPERATORS

Maryland Geological Survey

Download the data for the entire period of record for this well
NOTE: October 2001 to current data are provisional and subject to change

  • Return to Top of Page

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://md.water.usgs.gov/groundwater/web_wells/current/confined/counties/calvert/index.html
Page Contact Information: webmaster@md.water.usgs.gov
Page Last Modified: Monday, May 12, 2008