Maryland Water Well Data

Maryland Coastal Plain aquifers (Patuxent, Patapsco, Aquia) serve the east; fractured-rock aquifers supply the Piedmont.

We're building out Maryland coverage from the USGS national groundwater databases — the National Water Information System and the National Ground-Water Monitoring Network — which catalog groundwater sites, well depths, and water levels nationwide. Check back soon.

State groundwater agency: Maryland Department of the Environment

Meanwhile, you can find water well drillers in Maryland or see all covered states.