Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 1995
Open-File Report
96-621
By: Stephen E. Curtin, David C. Andreasen, and Frederick K. Mack
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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 1995 was prepared from water-level measurements in 92 wells. The potentiometric surface was highest near the northwestern boundaryand outcrop area of the aquifer in topographically high areas of Anne Arundel and Prince Georges Counties. Regionally, the potentiometric surface sloped gently downward towards 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 centeredaround well fields in the Annapolis, Waldorf, and Chalk Point areas. Ground-water levels were as low as 63 feet below sea level in the Waldorf area, more than 50 feet below sea level at Chalk Point, and almost 20 feet below sea level near Annapolis.
Suggested Citation
Curtin, S.E., Andreasen, D., Mack, F., 1996, Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 1995: U.S. Geological Survey Open-File Report 96-621, 1 map : photocopy ; 20 x 17 cm., on sheet 28 x 22 cm., https://doi.org/10.3133/ofr96621.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 1995 |
| Series title | Open-File Report |
| Series number | 96-621 |
| DOI | 10.3133/ofr96621 |
| Year Published | 1996 |
| Language | ENGLISH |
| Description | 1 map : photocopy ; 20 x 17 cm., on sheet 28 x 22 cm. |