Treig, Loch, a wild and beautiful lake in Kilmonivaig parish, Inverness-shire. Lying 784 feet above sea-level, it extends 5¹/8 miles north-by-eastward; varies in breadth between 1 and 5½ furlongs; is overhung by mountains. 2000 to 3658 feet high; abounds in fine trout; and sends off the river Treig 2³/8miles north.by-eastward to the Spean, at a point 6 miles E of the Bridge of Roy and 18¾ ENE of Fort William.—Ord. Sur., shs. 54, 63, 1873.

(F.H. Groome, Ordnance Gazetteer of Scotland (1882-4); © 2004 Gazetteer for Scotland)