Patapsco River Drainage Basin Map

The Patapsco River mainstem is a 39-mile river in central Maryland that flows into the Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore. With its South Branch, the Patapsco forms the northern border of Howard County, Maryland. The name "Patapsco" is derived from the Algonquian pota-psk-ut, which translates to "backwa…
The Patapsco River mainstem is a 39-mile river in central Maryland that flows into the Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore. With its South Branch, the Patapsco forms the northern border of Howard County, Maryland. The name "Patapsco" is derived from the Algonquian pota-psk-ut, which translates to "backwater" or "tide covered with froth".
  • Country: United States
  • State: Maryland
  • Region: Baltimore metropolitan area, Patapsco Valley
  • Cities: Baltimore, Elkridge, Ellicott City
  • Mouth: Chesapeake Bay
  • Length: 63 км
  • Basin size: 950 sq mi (2,460 km²)
Data from: en.wikipedia.org