Which is longer, the Black River Canal or Gowanus Canal?
Black River Canal The Black River Canal was a canal built in northern New York in the United States to connect the Erie Canal to the Black River. The canal had 109 locks along its 35 mi length. Remains of several of the canal's former locks are visible along New York State Route 12 near Boonville.
King Willem-Alexander Canal The King Willem-Alexander Canal (Dutch: "Koning Willem-Alexanderkanaal" ), named after King Willem-Alexander of the Netherlands, is a 6 km long canal in the northeastern Netherlands. The new canal through the Hondsrug is part of the larger "Veenvaart" project to draw more recreational boaters and tourists to the Veenkoloniën region in the provinces of Drenthe and Groningen.