11/7/2011 Clontarf Flood Protection Project Clontarf Flood Protection Project is all about protecting people � Their lives � Their homes Th i h � Their livelihoods Tom Leahy Executive Manager (Engineering) 2003 – 2005 Coastal Flood Clontarf has flooded before Protection Project � In February 2002 a 1/60 year event devastated � Flood Maps of area at risk the area. � Tidal surge early warning system � At risk of a repeat of this event every year � Doing nothing to protect people of Clontarf is not D i thi t t t l f Cl t f i t an option Wall locations( Mounding not possible with car parks) 2003 ‐ 2005 Outline Design Hollybrook rd car park Clontarf Baths � Range of potential solutions examined to protect Vernon Av Car Park people of Clontarf Yacht Club & Dublin Bus Car park � Recommended option is NOT a 9 Ft wall for 3 Km Km. � Recommended option is a landscaped mounding and some limited walls where not possible (e.g. at car parks). 1
11/7/2011 Photomontages (sample) of Approved Scheme compared to Photomontage Locations Bord Pleanala Scheme 1. Seaview Av � Based on indicative output from Design Review. 2. Sports ground � Full Design Review to be confirmed in November F ll D i R i t b fi d i N b 3. Oulton Rd and requires assessment by OPW and Dublin 4. Kincora Rd City Council that it will provide required level of protection. Seaview Av Photomontage Locations View 1 View 2 View 4 View 3 Existing View Coastal Flooding Clontarf 2002 Historical Flooding on Clontarf Road 2
11/7/2011 Seaview Av View following construction of Design review heights (1.41m) View following construction of current design (ABP approved). 0.69m reduction in height Approx 2.1m high Seaview Av Sports ground Existing View Existing View Sports ground View following construction of Design review heights (1.43m) View following construction of current design (ABP approved). 1.17m reduction in height Approx 2.6m high 3
11/7/2011 Sports ground Existing View Oulton Rd Oulton Rd View following construction of current design (ABP approved). Existing View Approx 2.6 m high Oulton Rd View following construction of Design review heights (2.15m) Existing View 0.45m reduction in height (Area lower and most at risk) 4
11/7/2011 Kincora Rd Kincora Rd View following construction of current design (ABP approved). Existing View Approx 1.15m high Kincora Rd View following construction of Design review heights (1.04m) 0.11m reduction in height Existing View Animation Locations Animation Locations Animation 1 From Stranville moving East 1. Animation 3 From Clontarf baths moving East 2. Animation 2 3. From the Bull wall ( wooden Bridge ) moving west 5
11/7/2011 2005 – 2007 Detailed Design 2007 – 2009 Statutory Process � Everyone agrees flood defences in Coastal areas � EIS to An Bord Pleanala are essential � Non Technical Summary � Design carried out by International Consultants � Public Display expert in complexity of coastal design and p p y g � Meetings considered best technical information. � Design: � Notified to Residents and Business Associations � Predicted sea level 1/200 year storm event � Approved by An Bord Pleanala after detailed � Predicted sea level rise over 50 years consideration � Impact of wave action in 1/200 year storm � No point in investing in defences which do not protect people! 2009 – 2010 Funding Approval 2010 ‐ 2011 � OPW 2011 budget � Tendering and Procurement of Contractor � DECLG Water Services Investment Programme � Plan to construct in 2012-2014 2010 to 2012 � People fully protected by 2014 after a 7 year long process (2003 – 2011). (2003 2011) 2011 Design Review due to concern about height Summary of Design Review of mounding and enjoyment of promenade � Reduced levels will improve views and amenity Confirmed � Clontarf at high risk of flooding � Anything lower will not protect people of Clontarf from Flooding. � Highest Astronomical tide = 1.99 m. OD � 1/200 Storm event still water level = 3.13 m � Climate change sea rise to 2055 = 3.34 m. OD � Wave height varies 0.5 m. to 0.9 m. due to coast exposure. It is possible to reduce height while providing protection to people of Clontarf. 6
11/7/2011 2012 ‐ 2014 Construction And Protection of Adaptive Management Approach Business and Residents Building Blocks of 2010 ‐ 2011 Tendering and Clontarf Flood Defence Procurement of � An adaptive management approach should be Contractor adopted now, whereby the new defence 2009 ‐ 2010 Funding Approval (WSIP 2001 ‐ 2012 and Cost structures are built with their foundations and benefit analysis for OPW) layout designed to allow them to be raised in due 2007 ‐ 2009 Statutory Planning Process (submission of EIS to ABP and course, if necessary. granting of planning permission) g g p g p � Ongoing monitoring and maintenance will deal with risks such as settlement of or damage to 2005 ‐ 2007 Detailed Design Process embankments 2003 ‐ 2005 Dublin Coastal Flood Protection � The versatility to allow the defences to be raised Project (Outline Design) in the future, for whatever reason, would ensure that the scheme will provide a 1 in 200 year 2002 Tidal Flooding event event standard for at least the next 50 years. Views when walking along roadway East of Baths to West of Bath Vernon Av Vernon Av 1200m 1100m 700m 100m 400m Uninterrupted view Partially interrupted view Obstructed view area subject to severe flooding post 2002 Location May 2006 Height EIS Design 2007 Design Review Height 2011 Height Next Steps Max Min Av Max Min Av Max Min Av � Public Briefing and opportunity to make views known � Report on Planning and Funding issues to December City Council meeting December City Council meeting West of Baths W f B h 1.44 0.3 1.03 2.58 8 0.85 8 1.75 1.59 0.45 1.18 8 (1200m) Clontarf Flood Protection Project is all about Baths to 1.82 0.82 1.41 2.75 1.32 2.09 2.17 1.02 1.71 protecting people Vernon Av (700m) � Their lives East of 1.15 0.51 .76 1.8 1.01 1.44 1.5 0.71 1.11 � Their homes Vernon Av (1100m) � Their livelihoods Lower Level of mounds recommended in Design Review (November 2011) compared to An Bord Pleanala Approved Scheme 7
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