The Ordnance Survey First edition mapping of 1867 shows a weir at this location. The weir pooled water in the Laxey River which was then drawn via a 140 metre mill race to Moughtin's flour mill (1850), later St George's Woollen Mill. Remnants of the weir still survive although water is now managed by means of more recent weirs 15 metres and 20 metres upstream.