Braunston Tunnel ft (2.13 m) beam boats to pass. There are three air shafts along its length. The tunnel passes underground alongside another Grand Union Canal feature, Drayton Reservoir, from which the feeder enters the canal at the east end of the tunnel. Braunston Tunnel Braunston Tunnel is on the Grand Union Canal about 830 yds (760 m) east of Braunston, Northamptonshire, England top lock. It is in the northern outskirts of Daventry, about 2 km east of the village of Braunston. Braunston Tunnel is 2,042 yards (1,867 m) in length. Built by Jessop and Barnes, the tunnel has no towpath and
Maida Hill Tunnel Venice and Camden Locks, passing through the tunnel and calling at the zoo, and the tunnel is only wide enough for one way traffic. Boats are therefore required to give way if another boat is approaching in the opposite direction. In 2016 the Canal River Trust provisionally opened access to non-powerfed craft such as kayaks, packrafts and canoes. Maida Hill Tunnel Maida Hill Tunnel is a canal tunnel on the Regent's Canal in London, England. The two other tunnels on the Regent's Canal are Islington Tunnel and Eyre's tunnel. The Regent's Canal was authorised by an Act of Parliament in