Topic summary
Harlem River Ship Canal
Extracted from the Wikipedia article Spuyten Duyvil Creek.
Harlem River Ship Canal
Over time the channels of the Spuyten Duyvil and Harlem River were joined and widened and additional bridges were constructed, but maritime transit was still difficult and confined to small craft. By 1817, a narrow canal was dug through the south end of Marble Hill at approximately 222nd Street, known as "Boltons' Canal" or "Dyckman Canal".