River Garry, Perthshire

The loch occupies a deep northeast-southwest aligned trench cut by glacial action.

Glen Garry provides the main route northwards for both the A9 road and the railway from Perth to Inverness.

One mile (two kilometres) to the northeast of the village of Calvine it drops over the Falls of Bruar and shortly afterwards enters the Garry on its left bank.

In the vicinity of Marble Lodge it turns gradually to a more southerly course and flowing under the Bridge of Tilt at Blair Atholl enters the left bank of the Garry.

The Allt Ghirnaig is a lesser tributary of the Garry whose headwaters arise on the southern slopes of Beinn a' Ghlo.