The River Balvaig (Scottish Gaelic: Abhainn Balbhaig) is a short river, approximately 8 km (5.0 mi) long, draining from the head of Loch Voil near Balquhidder in Scotland[1][2] and then passing southwards through the village of Strathyre before flowing into the northern end of Loch Lubnaig.
The river is known for its wildlife[3][4] and opportunities for anglers fishing for brown trout and spring salmon.[5]