11. The Lower Hudson - A Long Arm of the Sea
The lower Hudson south of Troy is a long arm of the sea, influenced by the Atlantic Ocean's high and low tides. Rising and falling tides on the Hudson cause the river's currents to switch direction - alternately flowing south towards the sea for about six hours and then north towards Troy for another six. Native Americans recognized the tidal nature of the river, calling it Mahicantuck, which loosely translated means "river that flows both ways."