Dullan Water, a stream of Mortlach parish, Banffshire, formed by the confluence of Tavat and Corryhabbie Burns at the head of Glen Rinnes, and thence running 5¾ miles north-eastward, till it falls into the Fiddich, ½ mile E of the centre of Dufftown. All open to the public, it contains abundance of trout, running 4 or 6 to the lb.—Ord. Sur., sh. 85,1876.

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