Hydrogeology & Hydrology Program
Southern Maryland Project	contact: David Drummond, Project chief (drummond@mgs.md.gov)

A 24-hour pump test was conducted with a discharge of 66.3 gallons per minute (gpm), immediately followed by a 24-hour recovery test. Based on the results of those tests, the specific capacity of the well was determined to be 0.54 gpm/foot. The transmissivity of the aquifer was determined to be 4,800 gpd/ft (640 ft²/day). Total drawdown was 35.7 feet.

Aquifer intervals:

0-65 feet, Surficial Lowland Deposits
65-240 feet, Chesapeake Group
240-435 feet, Nanjemoy Formation
435-460 feet, Marlboro Clay
460-620 feet, Aquia Formation
620-640 feet, Brightseat Formation
640-670 feet, Magothy Formation
670-980 feet, Upper part of Patapsco Formation
980-1230 feet, Middle part of Patapsco Formation
1230-1530 feet, Lower part of Patapsco Formation
1530-1650 feet, Arundel Formation (?)

Please note that the information on this page is based on preliminary data, and hence subject to change.

For more information on field methods, please see the Data Collection section.

 

So. MD Project

Field Sites

Background

Data Collection