Dublin City Council has estimated that it will be forced to pay out €100,000 to repair the damage caused by the deadly storm on January 3.
The council is understood to the first local authority to detail the financial costs of the storm, which caused up to €300m worth of damage nationwide.
A report by senior management, seen by independent.ie, indicates that much stronger flood defences will be required at Clontarf.
The seaside town was one of the worst hit by the bad weather and has been flooded several times in the past.
“A more sustainable solution is urgently required if the flooding risk at this location is to be mitigated,” according to senior engineer Michael Phillips.
The comments will alarm residents in Clontarf who previously mounted major opposition to plans for a permanent flood wall along the promenade.