Interactive Water-Level Mapper Tool
Monitoring groundwater levels is critical to determine if well withdrawals are sustainable. The Maryland Geological Survey (MGS), in cooperation with the U.S. Geological Survey, maintains a State-wide network of obsevation 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. Water-level data, stored in the U.S. Geological Survey's National Water Information System, can be accessed by clicking on the individual sites.