Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 2002

Open-File Report 2003-255
By: , and 



This report presents a map showing the potentiometric surface of the Aquia aquifer in the Aquia Formation of Paleocene age in Southern Maryland during September 2002. The map is based on water-level measurements in 94 wells. The highest measured water level was 38 feet above sea level near the northern boundary and outcrop area of the aquifer in the central part of Anne Arundel County, and was below sea level just south of this area and in the remainder of the study area. The hydraulic gradient increased southeastward toward an extensive cone of depression around well fields at Lexington Park and Solomons Island. Another cone of depression occurred in northern Calvert County due to pumpage at and near Chesapeake Beach and North Beach. The water level measured in this area has declined to 55 feet below sea level. The lowest water level measured was 169 feet below sea level at the center of a cone of depression at Lexington Park.

Study Area

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 2002
Series title Open-File Report
Series number 2003-255
DOI 10.3133/ofr2003255
Edition -
Year Published 2003
Language ENGLISH
Contributing office(s) Maryland, Delaware, and the District of Columbia Water Science Center
Description 1 sheet
Time Range Start 2002-09-01
Time Range End 2002-09-30
Scale 250000
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