River, south-central Scotland.
It flows east for 116 mi (187 km) from its headwaters on the slopes of Ben Lomond to enter the Firth of Forth, an estuary extending inland from the North Sea for 48 mi (77 km); the estuary varies in width from 1.5 to 17.5 mi (2.4 to 28 km). The river has a short highland section and a longer lowland section; the latter, called the Links of Forth, was the site of the Battle of Bannockburn (1314).