The flood alleviation scheme which went on public display yesterday will protect the Glanmire area, which has suffered an estimated €18m in damage to property from floods in June 2012 and December 2015.
Ken Leahy, a senior engineer with project consultants Arup, said that when completed, the scheme will protect 106 properties, of which 78 are residential, from the threat of future flooding.
Mr Leahy said a number of remedial works will be undertaken along the River Glashaboy from Sallybrook Industrial Estate, downstream to the Hazelwood and Crestfield shopping centres, Meadowbrook Estate, John O’Callaghan Park, Copper Valley View, and The Groves.
The works will include building earth embankments, walls, culverts, and pumping stations alongside the river.
A new, higher road bridge will be built between the two shopping centres to provide greater river flow, while the flood defence walls at Meadowbrook Estate are to be raised. All 49 houses in the estate were flooded in 2012.
New culverts will be developed at Copper Valley View and the river channel there will be deepened and widened.
Mr Leahy said the project would have a minimum 50-year lifespan and it would be easy to adapt it if climate change led to increased rainfall and higher river levels.
The minister with responsibility for the OPW, Seán Canney, who formally launched the project in County Hall yesterday, urged as many people as possible to attend the public exhibitions, which are taking place in Vienna Woods Hotel. He said all submissions would be looked at and it is vital the public provides engineers with feedback.
A number of preliminary works have already been undertaken in the area by the county council. In conjunction with Inland Fisheries Ireland (IFI), it carried out river cleaning in the Glashaboy from the shopping centres downstream to Meadowbrook and to the southern side of Riverstown bridge. They also ensured drains in the area were free of debris.
There was a setback to the preliminary works when the destructive, invasive plant Japanese knotweed was discovered in the area. Specialist contractors were engaged to control it spreading.
The scheme has been drawn up by county council engineers and consultants Arup and JBA on behalf of the OPW. It is expected that construction will start next October and be completed in late 2018 or early 2019.
The first day of the public exhibition opened yesterday in Vienna Woods Hotel.
Council engineers will be on hand at the hotel again to answer queries from the public between 2pm and 8pm on November 30, December 6, and December 20. The public will also be able to see copies of the proposed scheme up until to December 20 at Glanmire Library in the Hazelwood Shopping Centre and the council offices at Ballinglanna, Glanmire.
The closing date for submissions for the project is January 31, 2017. They should be addressed to the Glashaboy Flood Relief Scheme, Coastal Management and Flood Projects Department, Floor 10, Cork County Hall.
The council yesterday signed an agreement with Arup to develop plans for flood relief in Midleton.