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Potentiometric Surface of the Lower Patapsco Aquifer in Southern Maryland, September 2009

Open-File Report 2010-1207

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

This report presents a map showing the potentiometric surface of the lower 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 64 wells. The highest measured water level was 110 feet above sea level near the northwestern boundary and outcrop area of the aquifer in northern Prince George's County. From this area, the potentiometric surface declined towards well fields at Severndale, Broad Creek, and Arnold. The measured groundwater levels were 99 feet below sea level at Severndale, 50 feet below sea level at Broad Creek, and 36 feet below sea level at Arnold. There was also a cone of depression in Charles County that includes Waldorf, La Plata, Indian Head, and the Morgantown power plant. The groundwater levels measured were as low as 215 feet below sea level at Waldorf, 149 feet below sea level at La Plata, 121 feet below sea level at Indian Head, and 96 feet below sea level at the Morgantown power plant. The map also shows well yield in gallons per day for 2008 at wells or well fields.

Geospatial Extents

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Potentiometric Surface of the Lower Patapsco Aquifer in Southern Maryland, September 2009
Series title:
Open-File Report
Series number:
2010-1207
Year Published:
2010
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Maryland Water Science Center
Description:
Map; 1 Sheet 8.50 x 11.00 inches
Number of Pages:
2
Time Range Start:
2009-09-01
Time Range End:
2009-09-30
Country:
United States
Scale:
250000
Online Only (Y/N):
Y
Additional Online Files(Y/N):
N