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Potentiometric surface of the Upper Patapsco aquifer in southern Maryland, September 2009

Open-File Report 2010-1205

Prepared in cooperation with the Maryland Geological Survey and the Maryland Department of Natural Resources
By:
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Abstract

This report presents a map showing the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Early Cretaceous age in Southern Maryland during September 2009. The map is based on water-level measurements in 65 wells. The highest measured water level was 118 feet above sea level near the northern boundary and outcrop area of the aquifer in northern Anne Arundel County. From this area, the potentiometric surface declined to the south toward a well field in the Annapolis-Arnold area, and from all directions toward three additional cones of depression. These cones are located in the Waldorf-La Plata area, Chalk Point, and the Leonardtown-Lexington Park area. The lowest measured groundwater levels were 26 feet below sea level at Annapolis, 108 feet below sea level south of Waldorf, 60 feet below sea level at Chalk Point, and 83 feet below sea level at Leonardtown. The map also shows well yield in gallons per day for 2008 at wells or well fields.

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Potentiometric surface of the Upper Patapsco aquifer in southern Maryland, September 2009
Series title:
Open-File Report
Series number:
2010-1205
Year Published:
2010
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Maryland Water Science Center
Description:
1 p.
Time Range Start:
2009-09-01
Time Range End:
2009-09-30
Country:
United States
Online Only (Y/N):
N
Additional Online Files(Y/N):
N