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Open-File Report 2009-1087

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 Lower 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 lower 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 45 wells, shows that the change of the potentiometric surface during the 17-year period ranged from increases of 19 feet at Indian Head and 6 feet near the outcrop area in Glen Burnie, to declines of 41 feet at Arnold, 45 feet at Severndale, 68 feet at Crofton Meadows, 77 feet at Waldorf, 76 feet at La Plata, 28 feet at the Morgantown power plant, and 35 feet at the Swan Point subdivision south of Morgantown.

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, The difference between the potentiometric surfaces of the Lower Patapsco aquifer in Southern Maryland, September 1990 and September 2007: U.S. Geological Survey Open-File Report 2009–1087, 1 map sheet.




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