Locks on the Rideau Canal

July 9, 2010 Navigating on Rideau canal from Ottawa to Lake Ontario. - People waiting to go through the locks. * Traffic jam? - No this is not what it appears to be. After they enter in the space between 2 gates, the boats have to wait for the water level to be equal on 2 sections, so the gates can open and they can pass to the next segment of the canal.