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Potentiometric surface of the Magothy Aquifer in southern Maryland, September 1994

Open-File Report 95-744

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Abstract

A map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Cretaceous age in southern Maryland during September 1994 was prepared from water levels measured in 85 wells. The potentiometric surface was highest near the northwestern boundary and outcrop area of the aquifer in topographically high areas of Anne Arundel and Prince Georges Counties. Regionally, the potentiometric surface sloped gently downward toward the southeast, and the local gradients were directed toward the centers of three cones of depression that have developed in response to pumping. These cones were centered around well fields in the Annapolis, Waldorf, and Chalk Point areas. Ground-water levels were as low as 60 feet below sea level in the Waldorf area, more than 45 feet below sea level at Chalk Point, and almost 15 feet below sea level near Annapolis.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Potentiometric surface of the Magothy Aquifer in southern Maryland, September 1994
Series title:
Open-File Report
Series number:
95-744
Edition:
-
Year Published:
1995
Language:
ENGLISH
Description:
1 map : photocopy ; 20 x 17 cm., on sheet 28 x 22 cm.
Scale:
1