River Tay River Tay The River Tay () is the longest river in Scotland and the seventh-longest in the United Kingdom. The Tay originates in western Scotland on the slopes of Ben Lui (), then flows easterly across the Highlands, through Loch Dochart, Loch Iubhair and Loch Tay, then continues east through Strathtay (see Strath), in the centre of Scotland, then southeasterly through Perth, where it becomes tidal, to its mouth at the Firth of Tay, south of Dundee. It is the largest river in the UK by measured discharge. Its catchment is approximately , the Tweed's is and the Spey's is
Tay Bridge disaster he had never checked speed through the high girders. Painters who had worked on the bridge in mid-1879 said that it shook when a train was on it. When a train entered the southern high girders the bridge had shaken at the north end, both east-west and, more strongly, up-and-down. The shaking was worse when trains were going faster, which they did: 'when the Fife boat was nearly over and the train had only got to the south end of the bridge it was a hard drive'. A joiner who had worked on the bridge from May to October 1879