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.
The Rythe
The Rythe is a river or stream in north Surrey, England which is generally open and which is a natural woodland feature for approximately half of its course before being variously culverted and a suburban garden feature, passing between Thames Ditton and Long Ditton, then discharging into the Thames, its longest branch is the Arbrook which drains Arbrook Common, a woodland of the mainly wooded Esher Commons.