One of 24 Rideau Canal lockstations, Ottawa Locks, with its flight of eight locks is more than just an item of passing historic interest. These locks represent an amazing engineering achievement in the middle of the Canadian wilderness of the early 19th century and became the focus around which the city of Ottawa grew. The locks connect the channel of the Rideau Canal in Ottawa to the Ottawa River, almost 80 ft. (24.4 m) below.
http://www.rideau-info.com/canal/history/locks/...
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