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| MD-DE-DC Water Science Center |
U.S. GEOLOGICAL SURVEY
Open-File Report 01-206
This report presents a map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Cretaceous age in Southern Maryland during September 1999. The map is based on water-level measurements in 81 wells. The potentiometric surface was highest near the northern boundary and outcrop area of the aquifer, in topographically high areas of Anne Arundel and Prince Georges Counties.
Regionally, the potentiometric surface tends to decline towards the south. Local gradients are directed toward the centers of two cones of depression that developed in response to pumping. These cones of depression were centered around well fields in the Waldorf area and the Chalk Point power plant. Ground-water levels were as low as 75 feet below sea level in the Waldorf area and 77 feet below sea level at Chalk Point.
This report is available as a GIF file (Large Print Size) and in Portable Document Format (PDF)(8½ x 11 printed size).
View the OFR 01-106 report in GIF (184 KB)
View the OFR 01-106 report in PDF (121 KB)
If you do not have the Adobe Acrobat PDF Reader, it is available for free download from Adobe Systems Incorporated.
Document Accessibility: Adobe Systems Incorporated has information about PDFs and the visually impaired. This information provides tools to help make PDF files accessible. These tools and the accessible reader may be obtained free from Adobe at Adobe Access.
For more information about USGS activities in Maryland, Delaware, and the District of Columbia, contact:
Director
MD-DE-DC Water Science Center
U.S. Geological Survey
8987 Yellow Brick Road
Baltimore, MD 21237
Telephone: (410) 238-4200
Fax: (410) 238-4210
or access the USGS Water Resources of Maryland, Delaware, and District of Columbia home page at: http://md.water.usgs.gov/.
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