COMHAIRLE CONTAE ÁTHA CLIATH THEAS
SOUTH DUBLIN COUNTY COUNCIL

MEETING OF SOUTH DUBLIN COUNTY COUNCIL

Monday, April 06, 2009

QUESTION NO. 1

QUESTION: Councillor P. Cosgrave

To ask the Manager to provide a detailed report on what remedial works have been done and to be done to prevent further flooding at Glenvara Park and Castlefield Court /Castlefield Way.

REPLY:

Following two surface water flooding incidents in August and September 2008 in Glenvara and Castlefield Estates,  South Dublin County Council's Drainage Maintenance Section carried out a thorough investigation of the 1,050mm culvert that carries the Ballycullen stream through both estates down to the Dodder River at the rear of Mount Carmel Park and into which all surface water from both estates drains.  Two buried and damaged manholes were found in the green parkland area at the bottom of Glenvara Park.  These were repaired, unblocked, and cleaned out and the inlet and outlet sewers were also cleaned out.  Additional gulleys were installed at the bottom of the cul de sac in Glenvara Park beside the green area to drain into the culvert.  Since this work was carried out, there has been no problems with the surface water system in either Glenvara or Castlefield Estates.

The flooding incident in early February 2009 related the foul sewerage system.  In Glenvara and Castlefield Estates the main sewer comes from Hunterswood, Dal Riada, Woodstown Estates etc. through both Castlefield and Glenvara Estates and into the big trunk sewer, Dodder Valley Sewer, near the Dodder River.  Due to misconnections and infiltration of surface water into the foul sewerage system the foul system was at full capacity during the snowy weather in early February 2009 resulting in the sewerage backing up and blocking some of the smaller sewers which overflowed into gardens and roads.  Ongoing investigations are continuing to try and identify areas where surface water may be getting into the foul sewerage system upstream of both estates.