I have recently received two replies from the area manager in relation to the Flood Defences in Clontarf. I will post the full responses below.
Briefly, I was told that the Dollymount Cycle Track and the Flood Defence scheme have been making progress; and that two liaison groups have been set up: The Environmental Liaison Group (which in represented by Raheny and Clontarf Residents Associations; the Clontarf Business Association; NPWS and various parts of Dublin City Council); and the Public Engagement Committee.
I was also told that further wave and over topping modelling is being carried out on a proposed dual wall flood protection system, using the existing sea wall and a new secondary wall at the rear of the footpath on Clontarf Road. It is felt that this system is likely to give the lowest barrier required to meet current and future national flood alleviation defence levels.
You can read the full responses below:
“To ask the Area Manager for an updated report on the situation regarding the Clontarf Flood Defences currently under construction beyond the Wooden Bridge.
The Dollymount Cycle Track and Flood Defence Scheme from the Wooden Bridge to the Causeway Road is progressing. Two Liaison Groups for this project have been set up.
The first is the Environmental Liaison Group, which is represented by Raheny and Clontarf Residents and Clontarf Business Associations as well as NPWS, and various Divisions of Dublin City Council; to address issues during the construction of the Project. A large number of local issues have been identified and discussed. This group has had two meetings to date and will have further meetings for the duration of the project.
The second group called the Public Engagement Committee is discussing the height and extent of the partially constructed flood wall has met four times. Lowering of a section of flood wall for a 450m stretch opposite St. Anne’s park is being considered but a final agreement by this group has not been reached as yet. Two sample sections are being prepared with proposed cladding (on the road side and capping stones) at a reduced height to better inform participants of this group of Dublin City Councils proposal for this section of flood wall. Further flooding calculations are being carried out and a report on the viability and costs of demountable defences is being prepared for the final meeting of this group scheduled for later this month.
Works are currently ongoing in zones 2 and-3 (i.e. northern half of the works) on watermain installation and testing and construction of manholes, continuation of drainage network and the installation of ducting for Traffic and public utilities. The contractor has also recently started works on the existing sea wall in Zones 2 and 3.
Further south in Zone 4 the contractor is currently sheet piling the grassed area opposite the Bike Shop in order to commence construction of a new 300m long section of reinforced concrete flood defence wall along the foreshore. It is anticipated that this work will take several months to complete.
“To ask the Area Manager for an updated report on the situation regarding the Clontarf Flood Defences consultation process relating to the section of sea front on the town side of the Wooden Bridge.
Further wave and over topping modelling is being carried out on a proposed dual wall flood protection system, using the existing sea wall and a new secondary wall at the rear of the footpath on Clontarf Road. It is felt that this system is likely to give the lowest barrier required to meet current and future national flood alleviation defence levels. Once this report is finalised a further meeting of the Joint Working Group will be held to present the findings and get public reaction to them. This meeting is likely to occur in June 2016.”