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.
River Ayr
Many practitioners of hillwalking and other related activities are probably aware that the river is pathed for upwards of 90% of its length. Due to disputes with estate owners and weather damage, the walk does temporarily abandon the river in a couple of locations. The path begins in the former village of Glenbuck, now a casualty of opencast mining and general industry decline. It follows the river from its source at Glenbuck Loch and ends at the coastal town of Ayr, where the river empties into the ocean at the Firth of Clyde. Typically the walk is done in 2 or 3 stages.