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Open-File Report 2009-1085

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

The Difference Between the Potentiometric Surfaces of the Upper Patapsco Aquifer in Southern Maryland, September 1990 and 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 change in the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Early Cretaceous age in Southern Maryland for September 1990 and September 2007. The map, based on water-level measurements in 33 wells, shows that during the 17-year period, the change in the potentiometric surface ranged from zero at the edge of the outcrop area in northern Anne Arundel County to a decline of 28 feet at Crofton Meadows, 38 feet at Arnold, 36 feet at Waldorf, 35 feet at the Chalk Point power plant, and 40 feet at Lexington Park.

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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, The difference between the potentiometric surfaces of the Upper Patapsco aquifer in Southern Maryland, September 1990 and September 2007: U.S. Geological Survey Open-File Report 2009–1085, 1 map sheet.




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