Map showing change in potentiometric surface of the Magothy Aquifer in southern Maryland between September 1975 and September 1981

Open-File Report 82-339
By: , and 

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Abstract

A map has been prepared that shows the net differences between two sets of water-level measurements made in 67 observations wells over a six-year period. One set of measurements was made in 1975, a relatively wet year, and the other set of measurements was made in 1981, a relatively dry year. The map shows that, except for a small area near the Annapolis well field where Magothy production wells were temporarily shut down, the potentiometric surface of 1981, compared with the potentiometric surface 1975, was: lower throughout the entire area; lower by at least 10 feet in the southwestern third of the area; lower by 30 to 40 feet in parts of northern Charles County , where pumping rates increased from an average of one million gallons per day (Mgal/d) in 1975 to 2.5 Mgal/d in 1981. (USGS)

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Map showing change in potentiometric surface of the Magothy Aquifer in southern Maryland between September 1975 and September 1981
Series title Open-File Report
Series number 82-339
DOI 10.3133/ofr82339
Edition -
Year Published 1982
Language ENGLISH
Description 1 map ; 21 x 16 cm.