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,
Unadilla River Unadilla River The Unadilla River is a river in the Central New York Region of New York State. The river begins northeast of the hamlet of Millers Mills and flows generally south to the village of Sidney, where it converges with the Susquehanna River, which drains into the Chesapeake Bay, a bay of the Atlantic Ocean. Most of the length of the Unadilla forms the western border of Otsego County and the eastern borders of Chenango and Madison counties, all in New York. This border made up a significant portion of the Fort Stanwix Treaty Line of 1768. It was