Intro Text 

Flood Alleviation Programme

 

Flood alleviation schemes which will mitigate flood risk associated with the surface water network of streams, rivers and culverts

 

Deansgrange Stream Flood Alleviation Project
Dún Laoghaire Rathdown County Council, along with project partners, the OPW, have appointed the joint venture team of JBA Consulting and JB Barry & Partners to assess, develop and design a viable, cost-effective and sustainable flood relief scheme which aims to minimise risk to the community, social amenity, environment and landscape character.
Public Engagement
We want to thank you for the engagement and feedback provided during the first Public Engagement Event, undertaken in September-October 2020. The comments, photos and videos received have proved useful tools in the options development. The consultation also helps the project team to better understand the impact of the proposals on the local communities and how we can potentially maximise the scheme benefits.
A new Public Engagement Event will be scheduled in Summer 2021. We will present the Preferred Option to provide the desired level of protection against flooding from the Deansgrange Stream and will listen to your comments and inputs regarding the scheme progress.
In tandem with this study an advance project, the Kilbogget Park Flood Storage Project, is being progressed. Construction is underway and currently expected to be finished in June 2021.  This project is being expedited to provide some element of flood relief to many properties downstream in Bayview/Seafield environs.  More work is required to provide the required level of flood protection.

Upcoming Works
A Geotechnical site investigation tender has just commenced to help better understand the ground conditions at potential work areas. OCB Geotechnical are the contractors and their site investigation team will be on site during May and June. Further site surveys carried out by our own Structural and Environmental specialists will also be underway during the next few months.
Next Steps
• Further surveys – including site investigation
• Options Development and Selection
• Environmental Assessments of Preferred Options
• Public Consultation Day – August 2021 (dependent on covid-19 restrictions)
• Finalisation of Options

     
Project Specific Website: www.deansgrangefrs.ie


Carrickmines Shanganagh Rivers Flood Alleviation Project

The Carrickmines/Shanganagh catchment stretches from Sandyford and Leopardstown in the West to Loughlinstown in the East, where it discharges into the Irish Sea between
There is a history of flooding in the catchment.   Flooding from the Shanganagh River has occurred on Commons Road on several dates from  1980 to 2011 and also in the Loughlinstown environs. The recently completed Eastern Catchment Flood Risk Assessment and Management (CFRAM) Study Area concluded that a flood relief scheme would be viable and effective for the community (can be viewed online at www.floodinfo.ie).

Appointment of JBA Consulting and JB Barry & Partners

Dún Laoghaire Rathdown County Council (DLRCC), along with project partners the OPW, have appointed the joint venture team of JBA Consulting and JB Barry & Partners to assess, develop and design a viable, cost-effective and sustainable flood relief scheme which aims to minimise risk to the community, social amenity, environment and landscape character.
With all this information we will analyse the recurrent and significant flooding events that have occurred and could happen in the future.
You may have already seen our Environmental team undertaking an environmental walkover survey out on site. They are recording the general environmental condition of the works area and other features, such as potential for protected habitats or invasive species stands. We will be completing a Constraints Study shortly to gather initial information on the presence and significance of manmade and environmental features and their potential impact on the design options for the Flood Relief Scheme.

Next Steps
• Continued Data collection and review
• Public Engagement Day – Date tbc (dependent on covid-19 restrictions)
• Further surveys – including condition assessment of existing structures, topographic survey, flow monitoring survey and environmental surveys
• Hydraulic Modelling to determine flood extents, depths and options development
• Options Development


Project Specific Website: www.csfrs.ie

 

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