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 56.3 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 1.7 gpm/foot. The transmissivity of the aquifer was determined to be 8,600 gpd/ft (1,100 ft²/day). Total drawdown was 33.9 feet.

   Depth, in feet         Hydrogeologic Unit
below land surface

0-50               Surficial Upland Gravel
50-210           Chesapeake Group
210-410         Nanjemoy Formation
410-430         Marlboro Clay
430-530         Aquia Formation
530-570         Brightseat Formation
570-700         Magothy Formation
700-870         Upper part of Patapsco Formation
870-1200       Middle part of Patapsco Formation
1200-1590     Lower part of Patapsco Formation
1590- ??         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