Rivers

Tamar rises in a boggy area near Woolley Moor, just a few miles short of the sea on the north Cornish coast. The Tamar’s source is less than 3.7 miles from the north Cornish coast but the river flows south through steep wooded valleys and an area of outstanding natural beauty. The total length of the river is 61 miles. The Tamar flows into the Hamoaze before entering Plymouth Sound. The main tributaries of the river Tamar include the rivers Inny, Ottery, Kensey and Lynher on the Cornish side and the Deer and Tavy on the Devon side.

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The Tamar is designated as a Site of Special Scientific Interest (SSSI), a European Special Area of Conservation, and an Area of Outstanding Natural Beauty. A part of it is also designated as a UNESCOWorld Heritage Site as part of the Cornwall and West Devon Mining Landscape. The Tamar and Tavy Estuary is a Site of Special Scientific Interest (SSSI) covering the tidal estuaries of the River Tamar and the River Tavy. Part of the Tamar estuary also forms the Tamar Estuary Nature Reserve, owned by the Cornwall Wildlife Trust. The site was designated in 1991 for its biodiversity and varying habitats that support a large number of wader and wildfowl species.

Rising on Woolley Moor only 4 miles from Bude and the Atlantic Ocean, the River Tamar flows south for nearly 50 miles to the English Channel. Major tributaries include the Deer, Claw, Carey, Ottery, Kensey, Wolf, Lyd, Thrushel, Tavy, Plym and Yealm.

Lower Tamar Lake The reservoir has been formed by damming the River Tamar. To the north (upstream) is the newer Upper Tamar Lake,[1] a reservoir used for public water supply.

The River Deer is river in Devon, a tributary of the River Tamar, joining it at North Tamerton.

River Claw

The River Ottery (Cornish: Otri)[1] is a small river in northeast Cornwall, England, United Kingdom. The river is about twenty miles (32 km) long from its source southeast of Otterham to its confluence with the River Tamar at Nether Bridge, two miles (3.2 km)northeast of Launceston. With its tributaries, the River Ottery forms a major sub-catchment of the Tamar system, draining 48 square miles (120 km2) of north Cornwall. The Ottery’s catchment area is within the Carboniferous geological formation known as the Culm Measures which stretches from Dartmoor to north Devon and across northeast Cornwall as far west as Bodmin Moor.[2][5] The infant river initially flows north until it reaches the hamlet of Trengune. From here it adopts an east-southeasterly course which it follows to its confluence with the River Tamar. The largest tributaries to the River Ottery are Caudworthy Water and Bolsbridge Water which join the Ottery from the north and Canworthy Water which joins from the south. The River Ottery system was severely affected by flooding in north Cornwall on 16 August 2004 when up to eight inches of rain fell during a single afternoon.[6]The Ottery headwaters at Marshgate and Otterham were the most severely affected. The river flows through an isolated area of mixed farming and the only riverside settlements of any size are Canworthy Water and Yeolmbridge.

The River Carey is a small river in West Devon that is a tributary to the River Tamar. The Carey rises in the Halwill Moor Plantation in Carey Valley, Halwill, flows south-west past Quoditch and Ashwater[3] before flowing a southern course near Virginstow,[4] then finally flowing into the River Tamar

The River Kensey is a river in east Cornwall, England, UK which is a tributary of the River Tamar. The river rises at Kensey in the parish of Treneglos and flows generally east to the south of Tresmeer and Egloskerry and then divides the town of Launcestonfrom its suburb Newport before flowing into the Tamar about a mile east of Launceston.[1]

The Lyd is a river rising at Lyd Head[1](Corn Ridge in NW Dartmoor) in the Dartmoor national park in Devon in South West England and flowing into the River Tamar beyond Lifton.[2] It runs through Lydford Gorge, the deepest gorge in South West England.

The River Inny (Cornish: Dowr Enni)[1] is a small river in East Cornwall, England, United Kingdom. A tributary of the River Tamar, the Inny is about twenty miles (32 km) long from its source near Davidstow on the eastern flank of Bodmin Moor to its confluence with the Tamar at Inny Foot near Dunterton.[2]

the river Tavy is a tributary of the River Tamar and has as its own tributaries: Collybrooke, River Burn, River Wallabrooke, River Lumburn and River Walkham.