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,
Geography of New York (state) state. The river takes its rise in Otsego Lake, and, flowing southwest to the Pennsylvania line, receives Charlotte River from the south and the Unadilla River from the north. After a course of a few miles in Pennsylvania, it again enters New York and flows in a general westerly direction to near the western border of Tioga County, whence it turns south and again enters Pennsylvania. Its principal tributary from the north is the Chenango River. The Tioga River enters New York from Pennsylvania near the eastern border of Steuben County, flows north, receives the Canisteo River from the west