What is the name of the portion of the Harlem River which was added in the late 19th century and eventually replaced the old course of the river?

The Harlem River Ship Canal or commonly referred to as the Harlem Ship Canal is the name of the portion of the Harlem River which was added in the late 19th century and eventually replaced the old course of the river. Although there was already a narrow canal named the Dyckman’s Meadows Canal located on the south end of Marble Hill, the United States Army Corps of Engineers agreed that a wide canal for shipping route between the Harlem and Hudson rivers was needed due to an increase of ship traffic.

This plan means that Dyckman’s Meadows Canal will be widened and Marble Hill will be separated from mainland Manhattan and isolated on the Bronx side to give way to the construction of the canal. On June 17, 1895, the Harlem River Ship Canal was opened and this changed the original course of the Harlem River and the Spuyten Duyvil Creek.