COMHAIRLE CONTAE ÁTHA CLIATH THEAS
SOUTH DUBLIN COUNTY COUNCIL
MEETING OF ENVIRONMENT, PUBLIC REALM AND CLIMATE CHANGE SPC
Tuesday, September 05, 2017
HEADED ITEM NO.
HEADED ITEM: M. Maguire
Flood Alleviation and Surface Water Schemes
REPLY:
The update on the flood alleviation schemes and the surface water schemes is as follows:
Ballycullen Stream Flood Alleviation Scheme
Following a number of flooding events in the Castlefield area, the Drainage Section of the Council has examined the flooding problem and after reviewing various options it has concluded that a duplication of the existing culvert is the preferred solution to alleviate flooding in the area. The contract for the construction of this scheme was awarded to Clonmel Enterprises Ltd. in February. Works have progressed well on site and the project is approximately 75% complete on. The project is expected to be complete in Q4 2017, a 12 month defects period will follow the final completion.
River Poddle Flood Alleviation Scheme
Following the severe flooding event of 24/25th October 2011 the OPW agreed and provided the extra funding to undertake the Catchment Flood Risk Assessment & Management Study (CFRAMS) of the Poddle. The final report on these was forwarded to the OPW who has since approved the Draft Design Brief for the River Poddle Flood Alleviation Scheme. The appointment of consultants is expected in early September. The letter of intent and the letters to the unsuccessful tenderers have been issued and subject to no objection or appeal, a consultant will be appointed in early September. The scheme is estimated to cost in the region of €6 million.
Camac Flood Alleviation Scheme
The overall scheme for the Camac did not meet the OPW cost benefit criteria to progress work on the river in its entirety. A steering group has been set up to consider works at specific locations on the Camac River, SDCC and the OPW have met on site and walked the Camac. A brief for the appointment of Consultants to carry out the design of flood alleviation measures at these specific locations is currently being drafted.
Whitechurch Stream Flood Alleviation Scheme
As part of the Dodder CFRAMS there is a proposed scheme for the Whitechurch Stream. The OPW have confirmed funding for the procurement of a consultant engineer for the scheme. We are currently drafting a design brief for this and will submit the brief when complete to the OPW prior to engaging the consultant through the DCC framework.
Surface Water Minor Capital Works – 2017
Provision has been made for the following SW Minor Capital works and assessments to be carried out during 2017.
- Tay Lane, Rathcoole – design re-assessment underway.
- Ballynakelly ‘Garage’ at Newcastle Manor, Newcastle – Works complete.
- Main Street, Peamount Road, Newcastle – not commenced.
- Old Lucan Road, Lucan – This is an extensive scheme. The scheme commenced during school summer holidays, main works complete, connections and resurfacing remaining. Resurfacing currently planned for the schools mid-term break.
- Ballyowen Lane, Lucan in conjunction with Public Realm and the Roads Department – PR to carry out pitch drainage separately. Main drainage works complete.
- Templeogue Village – initial assessment and feasibility study in conjunction with the Roads Department – Liaison with Roads department ongoing, also awaiting finalisation of MoU with Irish Water.
- Stocking Lane, Rathfarnham – not commenced.
- Orchard Road, Clondalkin – Works complete.
- Nangor Road/Ninth Lock Road Junction, Clondalkin – not commenced, to be re-assessed and deferred into the 2018 programme.
- Cookstown Industrial Estate, Tallaght – Works Complete.
- Poddle Lakelands screen – Awaiting delivery of screen which is to be replaced in late September
Ongoing works
Provision has been made for ongoing maintenance works to address pluvial and other flooding issues at various locations such as the following rivers and streams;
- Camac River
- Poddle River clearing
- Jobstown Stream
- Whitechurch Stream
- Owendoher stream