The River Laraig is the source of the Leny system and flows in an easterly direction for about 4km to be joined by the Laraig Burn at Inverlochlaraig before flowing through Loch Doine and on into Loch Voil.

There are a number of burns flowing into the loch from the north shore. The River Balvaig drains Loch Voil and the Calair Burn enters the Balvaig on the right bank just below Balquhidder. Surveys indicate that the falls about 400m upstream are only passable to migratory fish under ideal conditions. The Balvaig itself is generally fairly sluggish and prone to flooding. It enters Loch Lubnaig at Strathyre. The Ardchullary Burn is the only significant stream to enter Loch Lubnaig but it was barred to fish migration by a concrete retaining wall when the road was upgraded.

The Leny drains Loch Lubnaig and is, in the main, a very rough stream falling over bedrock. Apart from the short length just downstream of the loch, it is not thought to be good juvenile salmonid habitat until it reaches the floodplain at Callander, where gravels are once again evident.


The headwaters of the Venachar system rise in Glengyle at the head of Loch Katrine, which is dammed to supply water to Glasgow. Downstream of the dam the River Achray appears to have reasonable habitat but has few trout or salmon before draining into Loch Achray. The Blackwater runs out of the loch. It is joined at Brig o’ Turk by the Finglas Water.

A landslide into Loch Finglas in 2003 resulted in severe siltation in the river from which it has not yet recovered. The Blackwater drains into Loch Vennachar which is dammed. Below the Venachar Dam the Eas Gobhainn is a rough tumbling stream for the most part with good gravels and juvenile habitat in the lower reaches. There is a fish farm here where water is abstracted.

The River Teith is formed by the joining of the River Leny with the Eas Gobhainn at Callander and flows in a generally south-easterly direction until it meets the Forth at Stirling. A number of major tributaries enter from the left bank. The most productive are the Keltie Water and the Ardoch Burn. There is a power-generating plant at Deanston where the bulk of the water flow is abstracted over a 1km length.

River Level Data provided by SEPA for the Leny at Anie

River Level Data provided by SEPA for the Teith at Bridge of Teith and Teith at Callander

Contact Details

Stirling Council – Viewforth, Stirling FK8 2ET Tel: 01786 442932 Website:

Lanrick Castle – The Estate Office, Lanrick, Nr Doune, Perthshire, FK16 6HJ

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