Interactive Water-Level Mapper Tool
The Maryland Geological Survey (MGS), in cooperation with the U.S. Geological Survey, maintains a State-wide network of observation wells. In addition, MGS operates observation-well networks in Anne Arundel, Charles, Queen Anne's, and St. Mary's Counties, with funding support from those counties.
The map below shows the locations of the observation wells. Hydrographs and water-level data, stored in the U.S. Geological Survey's National Water Information System, can be accessed by clicking on the individual sites. |
Information about water-level monitoring networks
Potomac Group
Patuxent
Lower Patapsco
Upper Patapsco
Magothy
Monmouth
Aquia
Nanjemoy
Piney Point
Calvert aquifer system
Choptank
Manokin
Ocean City
Pocomoke
Surficial
water table
Matawan
Calvert
other aquifer
Multiple aquifers
No aquifer