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.
Extreme points of Scotland
Many points are on, or near sea level, but due to high rainfall, there are no natural dry pieces of land below sea level - see rivers and lochs below.The longest river in Scotland is the River Tay (117 mi, 188 km).