The Hudson River Estuary directly drains 5,300 square miles of the Hudson River’s 13,390-square-mile watershed. The watershed is mostly in New York State, but also bits of New Jersey, Connecticut and Massachusetts. These and many other interesting facts about the river can be learned at the Hudson River National Estuarine Research Reserve, described in the article in the Fall-Winter 2019-2020 issue of Wrack Lines.
Following are some additional photos of the Hudson River NERR.