The old Limerick Navigation included a section of canal at Killaloe, with three locks. The uppermost, now disused, is still visible at Killaloe; the middle lock (Moys) is accessible by small boat; the third (Cussaun) is under water in the Flooded Area created by Parteen Villa Weir. The wall that divided the canal from the river downstream of Killaloe bridge forms an island whereon are the former eel-packing station run by the ESB, the former goods store (inhabited by Waterways Ireland) and the former marble mill (now an ESB engineering works). The island hosts the Killaloe market on Sunday mornings.
The curious can (obstructions permitting) walk a little further downstream to where the wall was breached, allowing boats to access the canal below the bridge without having to go as far as Moys Lock.
An obstruction
A section of the canal below the bridge in Killaloe ~1900 (OSI)
The west side of the canal, below the slip, was lined with trees.
The trees
May 2008
May 2008
May 2008
November 2008
November 2008
November 2008, with homemade boat shelter
The trees behind the marble mill: seen from the far side of the river in December 2009
August 2010
A fallen tree blocks the canal in December 2010
April 2011
April 2011
November 2011
November 2011
November 2011
Waterways Ireland Marine Notice 86 of 2011
MARINE NOTICE No. 86 of 2011
Shannon Navigation
Lough Derg
Killaloe CanalCanal Maintenance – Tree Cutting
Waterways Ireland wishes to advise all masters and owners of vessels that tree cutting will take place along the Killaloe Canal banks from the vicinity of the cathedral downstream to the lower entrance from the river
Shannon, from Monday 19th Sep until about mid Oct.Access to this section of the canal will be closed during this period. […]
Marine Notice 24/2012 of 16 March 2012 said
Works are still ongoing along the Killaloe Canal banks from the vicinity of the Cathedral downstream to the lower entrance from the river Shannon.
Access to this section of the canal will be closed until further notice.
That notice has not (as of 10 June 2012) been withdrawn so it must be assumed that the works continue.
Cad a dhéanfaimid feasta gan adhmad?
The works photographed on 10 June 2012.
Irish waterways history 
A really really sad sight.