Albany, New York forming a continuous water route from the Great Lakes to New York City. Unlike the current Barge Canal, which ends at nearby Waterford, the original Erie Canal ended at Albany; Lock 1 was north of Colonie Street. The Canal emptied into a man-made lagoon called the Albany Basin, which was Albany's main port from 1825 until the Port of Albany-Rensselaer opened in 1932. In 1829, while working as a professor at the Albany Academy, Joseph Henry, widely regarded as "the foremost American scientist of the 19th century", built the first electric motor. Three years later, he discovered electromagnetic self-induction (the
Great Lakes shipping from January to March. Some icebreakers ply the lakes, keeping the shipping lanes open through other periods of ice on the lakes. The Great Lakes are also connected by the Chicago Sanitary and Ship Canal to the Gulf of Mexico by way of the Illinois River (from the Chicago River) and the Mississippi River. An alternate track is via the Illinois River (from Chicago), to the Mississippi, up the Ohio, and then through the Tennessee–Tombigbee Waterway (a combination of a series of rivers and lakes and canals), to Mobile Bay and the Gulf of Mexico. Commercial tug-and-barge traffic on