Continuous groundwater-level data
Anne Arundel County
- Crofton Meadows -- Patuxent aquifer (AA Cc 135)
- Crofton Meadows -- Lower Patapsco aquifer (AA Cc 137)
- Arnold -- Lower Patapsco aquifer (AA Cf 137)
- Arnold -- Patuxent aquifer (AA Cf 166)
- Broad Creek -- Upper Patapsco aquifer (AA De 95)
Charles County
- Potomac Heights -- Lower Patapsco aquifer (CH Bc 24)
- Chapman's Landing -- Patuxent aquifer (CH Bc 75)
- Sun Valley -- Magothy aquifer (CH Be 43)
- St. Charles -- Magothy aquifer (CH Bf 133)
- St. Paul -- Lower Patapsco aquifer (CH Bf 146)
- St. Charles -- Upper Patapsco aquifer (CH Bf 157)
- St. Charles -- Lower Patapsco aquifer (CH Bf 161)
- St. Charles -- Patuxent aquifer (CH Bf 168)