Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 1997
By Curtin, S.E., Andreasen, D.C., and Mack, F.K.
Abstract
This report presents a map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Cretaceous age in Southern Maryland during September 1997. The map was prepared from water-level measurements in 88 wells. The potentiometric surface was highest near the northern 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 towards the southeast and the local gradients were directed toward the centers of two cones of depression that have developed in response to pumping. These cones were centered around well fields in the Waldorf area and Chalk Point. Ground-water levels were as low as 81 feet below sea level in the Waldorf area and 61 feet below sea level at Chalk Point.
