River, southern Scotland.
Scotland's most important river, it flows about 100 mi (160 km) from the Southern Uplands to the Atlantic Ocean. The upper Clyde is a clear fishing stream flowing north, but at Biggar it changes course and winds northwest to the Falls of Clyde. Beyond the falls, the widening Vale of Clyde, famous for the breeding of Clydesdale horses, is intensively cultivated. The Clydeside shipyards border the river for 20 mi (32 km) below Glasgow . At Dumbarton it reaches its estuary, the Firth of Clyde, which extends about 65 mi (105 km).