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
Asian carp introduced. The United States Environmental Protection Agency is also concerned about the possibility of Asian carp migrating to the Great Lakes. In 2002, the U.S. Army Corps of Engineers completed an electric fish barrier in the Chicago Sanitary and Ship Canal, the only navigable aquatic link between the Great Lakes and the Mississippi River drainage basins. The initial fish barrier was used as a demonstration project to study the design's effectiveness. Following positive results, construction began on a second, permanent barrier in 2004. In addition to the canal, the corps has identified 19 sites in five additional states, from Minnesota