This still is a place of "honking geese".
"'Potomac' is a European spelling of Patowmeck, the Algonquian name of a Native American village, perhaps meaning 'something brought'. Native Americans had different names for different parts of the river, calling the river above Great Falls Cohongarooton, meaning 'honking geese' and 'Patawomke' below the fall, meaning "river of swans". The spelling of the name has taken many forms over the years from 'Patawomeke' (as on Captain John Smith's map) to 'Patawomeck', 'Patowmack, and numerous other spellings in the 18th century and now 'Potomac'. The river's name was officially decided upon as Potomac by the Board on Geographic Names in 1931." ~ Wikipedia