Longest river in Scotland; length 193 km/120 mi, it flows northeast through
Loch Tay, then east and southeast past Perth to the
Firth of Tay, crossed at Dundee by the
Tay Bridge, before joining the North Sea. The Tay has salmon fisheries; its main tributaries are the Tummel, Isla, and Earn, Braan, and Almond.
The drainage basin of the Tay and its tributaries forms one of the most fully integrated hydroelectric developments in the north of Scotland.
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