The canal was built by the British after the War of 1812 to provide a secure link between Montreal and Kingston, without passing along the Saint Lawrence River because that river borders American territory. Colonel By of the Royal Engineers was in charge; the city at the North end of the canal, now called Ottawa, was originally Bytown.
Actual construction started in 1827 and the canal was opened 5 years later in 1832, with 47 locks in 25 separate lock stations. While the total length of the route is 202 kilometers, only about 19 kilometers are actually man-made, with the rest of the route using existing lakes and rivers.
The Bytown Museum[http://www.bytownmuseum.com/] by the Ottawa Locks in Ottawa is a good place to learn about the history of the Rideau Canal.
There are two main ways to see the Rideau Canal: either you can travel by '''boat''' in the canal itself, or you can '''drive''' alongside. You can either opt to drive or sail by yourself, or go for a guided tour. Some people also '''cycle''' this route.
The Canal is generally open to boat traffic from '''May 20''' to '''October 12'''. It can be covered in as little as three days by boat, but this won't leave you much time to enjoy the sights. In winter, an 8-kilometer section of the canal in Ottawa is transformed into the world's longest skating rink.
Maximum permitted dimensions are 27.4 m (90 ft) length, 7.9m (26 ft) width, and 6.7m (22 ft) height. Water depth is maintained at 1.5 metres (5.0 feet) minimum, although draught of over 1.2m is not recommended.
The entry points to the canal are Kingston to the south, from Lake Ontario and the St. Laurent River (elevation 74m), and Ottawa in the north from the Ottawa River (elevation 40m).