At a meeting of the Office of Public Works and Dublin City Council on 29 July 2009, the Council presented an interim report by consultants on the River Tolka, the Wad River sub-catchment and the Donnycarney, Dublin 5 area. This report analysed the flooding events of early July 2009, hydraulically modelled the Wad River catchment, and reported on suggestions for alleviating flooding from severe storm events in the future.
The report found that the previously preferred local flood alleviation option — namely, the construction of a duplicate Wad culvert — would not be a viable option, as it might increase the risk of flooding downstream in a built-up area close to the Clontarf seafront. It did, however, recommend that a full Catchment Study, including Cost Benefit Analysis, should be carried out to establish the most appropriate measures to alleviate flooding in the area in the medium term. Dublin City Council has appointed consultants to carry out the study. Dublin City Council expects the study to be completed by the middle of 2010.