Coastal Change in Fingal - A Local Authority Response

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Comhairle Contae Fhine GallFingal County Council

Fingal County Council

Kevin Halpenny Senior Parks & Landscape Officer


Coastal Change in Fingal -A Local Authority Response

Planning & Strategic Infrastructure Department

Exchanging Knowledge and

Best Practice Across Borders

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• Fingal Coastal Liaison Group• Rogerstown Estuary Coastal Flooding

and Erosion Risk Management Study• Coastal Communities Adapting Together (CCAT)

Skerries

Malahide

Howth

Rush

Burrow Peninsula Portrane

Reasons for Establishment of the Fingal Coastal Liaison Group

In Response to ongoing concerns in relation to Coastal Erosion/Coastal Flooding in Fingal.

Need for Coherent Structured Response to these concerns and improved communication between relevant stakeholders.

To provide a Forum for Discussion on approaches to planning for and dealing with the problems of Coastal Erosion/Flooding .

Membership of Liaison Group

• 2 Councillors each elected from the Swords/Balbriggan &Howth/MalahideAreas

County Councillors

(4)

• 2 Local Residents form each of the affected areas i.e. Portrane (The Burrow), Sutton (Claremont Strand) and Rush (South Strand).

Residents Group Representatives

(6)

• Planning & Strategic Infrastructure Dept:• Senior Parks Superintendent, Heritage Officer,

Biodiversity Officer, Administrative Officer

• Operations Department:• SEO and/or Senior Executive Engineer from each of

the affected areas.

Council Officials

(6)

Terms of Reference for Fingal Coastal Liaison Group March 2016

To review and make recommendations in relation to the management of coastal erosion and coastal flooding in Fingal.

To discuss and as far as possible address any matters of concern to the communities living in Rush, Portrane and Sutton in relation to coastal erosion and coastal flooding in these areas.

To foster opportunities for joint projects, information sharing and grant funding to address issues of concern in relation to coastal management.

To facilitate broader community participation in coastal, and natural resource management through informing and liaising with member community groups.

Terms of Reference for Fingal Coastal Liaison Group continued.

To provide best practice advice in accordance with the provisions of the Fingal Development Plan and other relevant policy documents in the context of integrated planning and management of the Fingal coastline.

To incorporate the latest knowledge on climate change into coastal planning to assist the Council with the integration of adaptation strategies into planning policies.

To review scientific advice and integrate this knowledge into the preparation and review of coastal management plans.

Rogerstown Outer EstuaryLong Term Approach to Coastal Erosion and Flooding

rpsgroup.com

ROGERSTOWN ESTUARY COASTAL FLOODING AND EROSION RISK MANAGEMENT STUDY

Consultation Event – September 2020

31

Preliminary Findings

The Burrow: 1 in 200 year flood event (current and HEFS erosion projections by 2100)

Current erosion projection & current flood event

HEFS erosion projection & HEFS flood event

HEFS erosion projection & MRFS flood event

32

Optioneering – Short listed Options

Shortlisted Options

Rock Armour Revetment Dune Management:

Seawalls - Dune Reprofiling

Embankments - Sand Trap Fencing

Fishtail Groynes Beach Renourishment

No Active Intervention Shoreline Monitoring

Managed Retreat

Study Update

Shortlisted options used to develop Coastal Management Schemes for the Rogerstown Outer Estuary – The Burrow Beach & Rush South:

Limited flooding and erosion risk at Rush North

▪ Recommend No Active Intervention with Shoreline Monitoring Programme

* Full description and assessment of options can be found in the Technical Report on the consultation portal *

RogerstownEstuary

The Burrow PeninsulaPortrane

34

Study Update

T Groyne

Beach NourishmentUrban Wall

Embankment

1b

1a

1c

1d

1

2a

2b

2

3

3

4

4

The Burrow Option 3

To address Erosion:

▪ T - Groynes and Beach Nourishment

To address Flooding:

▪ Embankments & Sea Walls

Burrow Peninsula

Portrane

Areas prone to Coastal Flooding in Rush

36

Study Update

Rush

Flood Gates

Flood Wall

Culvert

1b

1a

1c1

2

3b

3

2b

2a

2c

3aTo address Flooding:

▪ Embankments & Sea Walls

Historical Review

Flooding and Erosion Risk Assessment

Develop Management Plans

Prelim. Environmental Assessment

Consult with Authorities

Consult with the Public

37Study Update

PROGRESS TO DATE

✔

✔

✔

✔

✔

We are here

Format and objectives of this

CFERM study are based on

guidance developed by the Office of

Public Works

Planning Timeline for Long Term Solution at Rogerstown

• IROPI (Imperative Reasons of Overriding Public Interest) review – Approximately 7 weeks (i.e. delivery on / before 1st July). However, part of the review will be part-dependent on receiving information in a timely manner from various Government agencies, which is somewhat beyond our control.

• EIA Scoping report – Approximately 7 weeks (i.e. delivery on / before 1st July). This may require elements from our numerical modelling assessment and refinement of the proposed option.

• Numerical Assessment and Refinement of Proposed Option, including assessment of potential impact– Approximately 10 weeks (i.e. around mid July).

• Preparation of Planning Report/Statement of Case/ Justification/Mitigation/Possible Compensatory Measures for submission to An Bord Pleanála in 2021

Long Term Solution at Portrane Beach

Installation of Groynes and Beach Nourishment

CCAT - Future Approach

Policy

PracticePlanning

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Kevin Halpenny Senior Parks & Landscape Officer



Thank You !


Documents

Coastal Change in Fingal - A Local Authority Response