page_title: Patapsco River
hierarchical_section_title: Patapsco River
caption_attribution_description: English: Jeff Klein and Betsy McMillion, volunteers from the Friends of Patapsco Valley &amp; Heritage Greenway, Inc., discuss results a community cleanup of Herbert Run (a tributary of the Patapsco River) in Arbutus, Maryland.
context_page_description: The Patapsco River mainstem is a 39-mile-long river in central Maryland which 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."
context_section_description: The Patapsco River mainstem is a 39-mile-long (63 km) river in central Maryland which 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."
caption: Volunteers at a community cleanup of Herbert Run, a tributary of the Patapsco River running through Arbutus, Maryland
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