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Open-File Report 2009-1082

Prepared in cooperation with the Maryland Geological Survey (MGS) and the Power Plant Assessment Program, Maryland Department of Natural Resources.

Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 2007

By Stephen E. Curtin (USGS), David C. Andreasen (MGS), and Andrew W. Staley (MGS)

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Abstract

This report presents a map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Late Cretaceous age in Southern Maryland during September 2007. The map is based on water-level measurements in 69 wells. The highest measured water level was 85 feet above sea level near the northern boundary and outcrop area of the aquifer in the north-central part of Anne Arundel County.

The potentiometric surface declined towards the south. Local gradients were directed toward the center of a cone of depression in the Waldorf area that developed in response to pumping. Measured ground-water levels were as low as 90 feet below sea level in the Waldorf area.

For additional information contact:
Director
U.S. Geological Survey
Director, MD-DE-DC Water Science Center
5522 Research Park Drive
Baltimore, MD 21228

http://md.water.usgs.gov

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Suggested citation:

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2009, Potentiometric surface of the Magothy aquifer in Southern Maryland, September 2007: U.S. Geological Survey Open-File Report 2009–1082, 1 map sheet.




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