Claim: Garbh Uisge, Gaelic for  "Rough Water", is a 7 km. river in the Trossachs of Scotland that outflow from Loch Morlich and joins with Eas Gobhain west of Callander to form the River Teith.
Evidence: The name of the river, Garbh Uisge, is Gaelic for "Rough Water", reflecting the nature of the river. Garbh Uisge is a river of approximately 7 km in the Trossachs of Scotland just north-west Callander. It is the outflow of Loch Lubnaig and joins with Eas Gobhain west of Callander to form the River Teith.