The loch lies between steeply wooded hills and is approximately 3.2 kilometres (2.0 mi) in length, narrowing to around 700 metres (770 yd) wide.

The loch is retained by the Pitlochry Dam which was built by Wimpey Construction between 1947 and 1950[1] as part of the North of Scotland Hydro-Electric Board's Tummel Hydro-Electric Power Scheme.

The water holds a good head of brown trout and the native fish are augmented by a stocking in the 1-5lb range.

Salmon and a few sea trout pass through as they head up the Tummel and Garry systems.

There are also good numbers of small pike with a few larger specimens mixed in.