The Endrick Water or River Endrick is a river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 which flows into the eastern end of Loch Lomond

Loch Lomond

Loch Lomond is a freshwater Scottish loch, lying on the Highland Boundary Fault. It is the largest lake in Great Britain by surface area. The lake contains many islands, including Inchmurrin, the largest fresh-water island in the British Isles, although the lake itself is smaller than many Irish...

, Scotland.

Its drainage basin

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

 covers a large part of the west of Stirling

Stirling

Stirling is a city and former ancient burgh in Scotland, and is at the heart of the wider Stirling council area. The city is clustered around a large fortress and medieval old-town beside the River Forth...

 District. The Burnfoot Burn rising on the southern slopes of the Gargunnock Hills

Gargunnock Hills

The Gargunnock Hills are a range of hills west of the city of Stirling, Scotland. They culminate in the peak of Carleatheran, whose summit is crowned by a trigonometrical pillar. The Gargunnock Hills are separated from the Fintry Hills to their west by the valley of the Backside Burn...

 and the Backside Burn rising on the eastern slopes of the Fintry Hills

Fintry Hills

The Fintry Hills form the western end of a range of hills which stretch west from the city of Stirling, Scotland. They culminate in the peak of Stronend, which overlooks the village of Fintry....

 combine to form the Endrick Water which flows south before turning sharply westwards at the foot of the western dam of Carron Valley Reservoir. The river flows through the village of Fintry

Fintry

Fintry is a small village in central Scotland, nestled in the strath of the Endrick Water between the Campsie Fells and the Fintry Hills, some 19 miles north of Glasgow. It is within the local government council area of Stirling...

 and past Balfron

Balfron

Balfron, is a village in the Stirling council area of Scotland. It is situated near Endrick Water on the A875 road, 18 miles west of Stirling and 16 miles north of Glasgow. Although a rural settlement, it lies within commuting distance of Glasgow, and serves as a dormitory town.-History:The name...

 and Drymen

Drymen

Drymen is a village in Stirling district in central Scotland. Drymen lies to the west of the Campsie Fells and enjoys views to Dumgoyne on the east and to Loch Lomond on the west...

before entering Loch Lomond.