The weir which built in 1795 by Charles Leslie (see Ballincollig Royal Gunpowder Mills by Jenny Webb and Anne Donaldson, 2006) to divert water from the River Lee to the canals in his Gunpowder Mills at Ballincollig, has collapsed in the centre. The water level in the River Lee upstream of the damaged weir is now much lower than usual at the Ballincollig Regional Park, as the weir is no longer welling up the water behind it, to divert it off to the canals. The canals are drying up as a consequence.
Below are some images from before and after this event.
(images taken on the 17th December 2014)
Canal which is now dried up:
Links below, added on the 23rd December 2014: