Waterways > River Tamar
River Tamar
The River Tamar flows along the border of Devon and Cornwall, into the English Channel at Plymouth.
River Tamar Map
Facts & Stats
44 miles
(71km)
Navigable length of the River Tamar, including tributaries. The main line from Morwellham Quay to Plymouth is 17.25 miles (27.6 km).
1 lock
There was once a lock 1.75 miles upstream of Morwellham Quay, at Weir Head Lock, which made the river navigable a further 1 mile upstream to New Bridge, Gunnislake. This section was known as the Tamar Manure Navigation.
Waterway notes
Navigation Authority
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