The Tavistock canal runs from the River Tavy to the Navigable River Tamar at Morwellham Quay, its engineer was John Taylor, a mining engineer, the canal was completed in 1817 and is over 7 km long with an undergound section of 2.4 km. through a tunnel that took 14 years to build, its exit from the tunnel is 72 meters above Morwellham, it was joined to the quay by incline planes worked by water wheels.