The Kennet is a 45 mile long river in the south of England, and a tributary of the River Thames. The lower reaches of the river are navigable to river craft and are known as the Kennet Navigation, which, together with the Avon Navigation, the Kennet and Avon Canal and the Thames, links the cities of Bristol and London.
The river rises at Swallowhead Spring near Silbury Hill, Wiltshire and joins the River Thames at Reading.
The River Kennet has been assigned as a Site of Special Scientific Interest (SSSI) from near its sources west of Marlborough down to Woolhampton. This is primarily because it has an extensive range of rare plants and animals that are unique to chalk watercourses.
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