50°15′25″N5°02′42″W / 50.257°N 5.045°W /50.257; -5.045
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TheTruro River (Cornish:Hyldreth)[1] is ariver in the city ofTruro inCornwall,England,UK.[2] It is the product of the convergence of the tworivers namedKenwyn andAllen which run under the city: the Truro River (named after the city) flows into theRiver Fal, estuarial waters where wildlife is abundant, and then out into theCarrick Roads. The river is navigable up to Truro.
The river valleys form a bowl surrounding the city on the north, east and west and open to the Truro River in the south. The fairly steep-sided bowl in which Truro is located, along with high precipitation swelling the rivers and aspring tide in the River Fal, were major causes of flooding in 1988 which caused large amounts of damage to the city centre.[3] Since then,flood defences have been constructed around the city,[3] including an emergencydam at New Mill on the River Kenwyn and atidal barrier on the Truro River, to prevent future problems. The valley of the Tresillian River is between the valleys of the Truro River and the Fal; the Tresillian River flows into the Truro River just upstream of where the latter joins the Fal.[4] Early records give the Tresillian River the name "Seugar" (1297) or "Sowgar" (1530); the meaning of this name is unknown.[5]
The river is mentioned in the medievalCornish language playBewnans Ke (c. 1550), as the place from which the eponymousSaint Kea embarks for Rosené. It uses the river's Cornish nameHildrech, which in modern spelling isHyldreth.[6]
The river from the city to the village ofMalpas, including Lambe Creek and Calenick Creek, formMalpas Estuary SSSI (Site of Special Scientific Interest). It is an important habitat of tidalmudflats, which are feeding grounds forwildfowl andwading birds as well as fish species includingEuropean seabass,thicklip grey mullet,European flounder andEuropean eel. There is also a small run of migratorybrown trout (Sea Trout, known in Cornwall as Peel) into the River Allen. The banks of the estuary are also noted for theirflora.[7]
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