Hudson River tournaments. Hudson River The Hudson River is a river that flows from north to south primarily through eastern New York in the United States. The river originates in the Adirondack Mountains of Upstate New York, flows southward through the Hudson Valley, and eventually drains into the Atlantic Ocean at New York Harbor, between New York City and Jersey City. The river serves as a political boundary between the states of New Jersey and New York at its southern end. Further north, it marks local boundaries between several New York counties. The lower half of the river is a tidal estuary,
New York (state) New York and Ontario sharing the Thousand Islands archipelago within the Saint Lawrence River, while most of its border with Quebec is on land; it shares Lake Champlain with the New England state of Vermont; the New England state of Massachusetts has mostly a land border; New York extends into Long Island Sound and the Atlantic Ocean, sharing a water border with Rhode Island, while Connecticut has land and sea borders. Except for areas near the New York Harbor, New York has a mostly land border with two Mid-Atlantic states, New Jersey and Pennsylvania. New York is the only state