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Potentiometric surface of the upper Patapsco Aquifer in southern Maryland, September 1994

Open-File Report 95-745

By:
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Abstract

A map showing the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Cretaceous age in southern Maryland during September 1994 was prepared from water levels measured in 43 wells. The potentiometric surface was at least 70 feet above sea level near the northwestern boundary and outcrop area of the aquifer in a topographically high area of Anne Arundel County, and nearly 60 feet above sea level in a similar setting in Prince Georges County. From these high areas, the potentiometric surface declined to the south and southeast toward large well fields in the Annapolis and Waldorf areas and at the Chalk Point powerplant. Ground-water levels reached nearly 30 feet below sea level in the Annapolis area, nearly 110 feet below sea level southwest of Waldorf, and more than 25 feet below sea level at the Chalk Point powerplant.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Potentiometric surface of the upper Patapsco Aquifer in southern Maryland, September 1994
Series title:
Open-File Report
Series number:
95-745
Edition:
-
Year Published:
1995
Language:
ENGLISH
Description:
1 map : photocopy ; 20 x 17 cm., on sheet 28 x 22 cm.
Scale:
1