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.[2][3]
The headwaters of the River Ottery are within the civil parish of Otterham but formerly came under the parish of Forrabury and Minster. In 1311, the rector of that parish wrote: "..the river Ottery takes its rise in this parish and flows to Canworthy Water and so by Yeolmbridge to the river Tamar."[4]