The Hudson River is a 315-mile (507 km) river that flows from north to south primarily through eastern New York, United States. It originates in the Adirondack Mountains of upstate New York at Henderson Lake in the town of Newcomb, and flows southward through the Hudson Valley to the New York Harbor between New York City and Jersey City, eventually draining into the Atlantic Ocean at Upper New York Bay. The river serves as a physical boundary between the states of New Jersey and New York at its southern end. Farther north, it marks local boundaries between several New York counties. The lower half of the river is a tidal estuary, deeper than the body of water into which it flows, occupying the Hudson Fjord, an inlet that formed during the most recent period of North American glaciation, estimated at 26,000 to 13,300 years ago. Even as far north as the city of Troy, the flow of the river changes direction with the tides.
Bear Mountain Bridge across the Hudson River as seen from Bear Mountain in New York state
The Hudson River flowing out of Henderson Lake in Tahawus
The river from Poughkeepsie, looking north.
The river between Hudson Waterfront in New Jersey (left) and Manhattan (right)
New York, sometimes called New York State, is a state in the Northeastern United States. One of the Mid-Atlantic states, it borders the Atlantic Ocean, New England, Canada and the Great Lakes. With almost 19.6 million residents, it is the fourth-most populous state in the United States and eighth-most densely populated as of 2023. New York is the 27th-largest U.S. state by area, with a total area of 54,556 square miles (141,300 km2).
Illustration of British general John Burgoyne surrendering at Saratoga on October 17, 1777
An illustration of the Erie Canal at Lockport in 1839
United Airlines Flight 175 hitting the South Tower during the September 11 attacks
Flooding on Avenue C in Lower Manhattan caused by Hurricane Sandy in October 2012