River Tay
The River Tay emerges from Loch Tay at Kenmore, and flows from there to Perth which, in historical times, was its lowest bridging point. Below Perth the river becomes tidal and enters the Firth of Tay. The largest city on the river, Dundee, lies on the north bank of the Firth. On reaching the North Sea, the River Tay has flowed from west to east across central Scotland.
Kayaking and canoeing on the River Thames
The tidal section is used by sea kayakers and experienced tourers. Above Teddington Lock in London the Thames is freshwater, with levels controlled by a series of weirs which are managed by the Environment Agency.