Strategic Flood Risk Assessment for County Meath A6 Strategic Flood Risk Assessment for County Meath

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Appendix 6 Strategic Flood Risk Assessment for County Meath A6 Strategic Flood Risk Assessment for County Meath

JBA Consulting

24 Grove Island Corbally Limerick Ireland

JBA Project Manager

Ross Bryant BSc MSc CEnv MCIWEM C.WEM

Contract

This report describes work commissioned by Meath County Council, by a letter dated 24th November 2011. Rosalie Scanlon and Ross Bryant of JBA Consulting carried out this work. Prepared by Rosalie Scanlon BE MIEI Engineer Reviewed by Ross Bryant BSc MSc CEnv MCIWEM C.WEM Team Leader Approved by Jonathan Cooper BEng MSc DipCD CEng MICE MCIWEM C.WEM MloD Director

Purpose

This document has been prepared as an SFRA for Meath County Council.

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List of Figures 297 List of Tables 297 Abbreviations 298 1. INTRODUCTION 299

1.1 Commission 299 1.2 Scope and Objectives 299 1.3 Report Structure 299

2. Study background 300 2.1 Introduction 300 2.2 Drainage Catchments 300 2.3 People, Property and Infrastructure 302 2.4 Environment 302 2.5 Flood Policy and Legislation 303 2.5.1 EU Water Framework Directive 303 2.5.2 EU Floods Directive 303 2.6 Planning Authorities 305 2.6.1 Local Area Plan Settlements 305

3. The Planning System & Flood Risk Management Guidelines 306 3.1 Introduction 306 3.2 Definition of Flood Risk 306 3.2.1 Likelihood of Flooding 307 3.2.2 Consequences of Flooding 307 3.3 Definition of Flood Zones 307 3.4 Objectives and Principles of the Planning Guidelines 308 3.5 The Sequential Approach and Justification Test 309 3.6 Scales and Stages of Flood Risk Assessment 310 3.7 SFRA and SEA 311

4. Data collection and availability 312 4.1 Overview 312 4.2 FEM FRAMS Flood Outlines 315 4.3 National PFRA Study Fluvial Flood Outlines 315 4.4 JFLOW® Flood Mapping 316 4.5 National CFRAM Programme 316 4.6 Local Flood Studies 317 4.7 Regional Flood Risk Appraisal of the Greater Dublin Area 318 4.8 Soil and Groundwater Vulnerability Maps 319 4.9 Historic Flood Review 320 4.9.1 Drainage Districts and Benefitting Lands 323 4.10 Walkover Survey 324

5. Sources of Flooding 324 5.1 Fluvial Flooding 325 5.2 Coastal / Estuarial Flooding 325 5.3 Pluvial Flooding 326

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5.4 Groundwater Flooding 326 5.5 Flooding from Drainage Systems 327 5.6 Flooding from Reservoirs and other Artificial Sources 327

6. Flood Risk Management Assets 328

7. Flood Zone Mapping 329 7.1 National Broadscale Flood Mapping; PFRA and JFLOW 332

8. Flooding Impacts 332 8.1 Flooding Impacts on People 333 8.2 Flooding Impacts on Property and Infrastructure 333 8.3 Flooding Impacts on the Environment 334 8.4 Climate Change 335 8.4.1 Climate Change and Flood Risk Assessment 336

9. Flood Risk managEment 337 9.1 Management of Flood Risk from a Planning Perspective 337 9.2 Flood Risk Policies and Objectives 337 9.2.1 Specific Development Planning Applications 337 9.3 Flood Management Action Plan 338 9.4 Policy Relating to Management of Surface Water 339 9.4.1 Overland Flow Routes 339 9.4.2 Sustainable Drainage Systems (SuDS) 339 9.5 Flood Mitigation Measures at Site Design 339

10. Development zoning and settlement review 340 10.1 Land Use Zoning Objectives 340 10.2 Review of Flood Risk at Settlements in County Meath 341 10.3 Strategic Rail Corridor 343

11. SFRA Review and monitoring 344

APPENDIX A SETTLEMENT REVIEW 345

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List of Figures

Figure 2‑1 Rivers and Catchments in Co. Meath 300 Figure 2‑2 River Basin Districts 304 Figure 2‑3 Greater Dublin Area 305 Figure 3‑1 Source Pathway Receptor Model 306 Figure 3‑2 Sequential Approach Principles in Flood Risk Management 309 Figure 3‑3 Development Plan Preparation where flood risk is scoped as an issue 312

List of TABLES

Table 2‑1 River Lengths in Co. Meath 301 Table 2‑2 County Meath Special Areas of Conservation (SACs) 302 Table 2‑3 County Meath Special Protection Areas (SPAs) 302 Table 2‑4 County Meath Natural Heritage Areas (NHAs) 302 Table 3‑1 Probability of Flooding 307 Table 3‑2 Definition of Flood Zones 308 Table 3‑3 Matrix of Vulnerability versus Flood Zone 310 Table 3‑4 Flood risk stages required per scale of study undertaken 311 Table 4‑1 Model Data Available 313 Table 4‑2 Other Data Available 314 Table 4‑3 Settlement Hierarchy 318 Table 4‑4 Significant Flood Events in County Meath 323 Table 6‑1 Flood Risk Management Assets in Meath 329 Table 7‑1 Model Data used in the Preparation of SFRA Flood Zone Maps 332 Table 8‑1 Properties in Flood Zones A and B 334 Table 8‑2 Allowances for Future Scenarios (100 Year Time Horizon) 336 Table 10‑1 Summary Classification of Vulnerability 340 Table 10‑2 Summary Results from the Settlement Review 343 Table 11‑1 SFRA Review Triggers 344

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Abbreviations

1D One Dimensional (modelling) 2D Two Dimensional (modelling) AEP Annual Exceedance Probability AFA Area for Further Assessment CDP County Development Plan CFRAM Catchment Flood Risk Assessment and Management Study DD Drainage District DTM Digital Terrain Model DoEHLG Department of the Environment, Heritage and Local Government E CFRAM Eastern Catchment Flood Risk Assessment and Management Study EPA Environmental Protection Agency FEH Flood Estimation Handbook FEM FRAMS Fingal East Meath Flood Risk Assessment and Management Study FRA Flood Risk Assessment FRAM Flood Risk Assessment and Management Study FRR Flood Risk Review FSU Flood Studies Update GDA Greater Dublin Area GDSDS Greater Dublin Strategic Drainage Study GSI Geological Survey of Ireland HDA Habitats Directive Assessment HPW High Priority Watercourse ICPSS Irish Coastal Protection Strategy Study JBA JBA Consulting – Engineers & Scientists JFLOW 2D hydraulic modelling package developed by JBA and used to create the Flood Zone Mapping LA Local Authority LAP Local Area Plan MPW Medium Priority Watercourse NHA Natural Heritage Area NW CFRAM North-West Catchment Flood Risk Assessment and Management Study NB CFRAM Neagh-Bann Catchment Flood Risk Assessment and Management Study OPW Office of Public Works OSi Ordnance Survey Ireland PFRA Preliminary Flood Risk Assessment pNHA Proposed Natural Heritage Area RPG Regional Planning Guidelines SAC Special Area of Conservation, protected under the EU Habitats Directive SEA Strategic Environmental Assessment SFRA Strategic Flood Risk Assessment SPA Special Protection Area for birds, protected under the EU Habitats Directive SuDS Sustainable Drainage Systems

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1. Introduction

1.1 Commission

JBA Consulting was commissioned by Meath This report details the SFRA for the county Local Authorities in November 2011 to and has been prepared in accordance with the undertake a Strategic Flood Risk Assessment requirements of the planning guidelines, The (SFRA). This study is to inform the Meath Planning System and Flood Risk Management1. County Development Plan for 2013 – 2019.

1.2 Scope and Objectives

Under The Planning System and Flood Risk risk maps that support the application of Management guidelines (OPW/DoEHLG, the sequential approach, in areas within 2009), the purpose for the SFRA is detailed the development envelope, where there as being “to provide a broad (wide area) may be tension between development assessment of all types of flood risk to inform pressures and avoidance of flood risk; strategic land-use planning decisions. SFRAs LL To inform, where necessary, the application enable the LA to undertake the sequential of the Justification Test; approach, including the Justification Test, LL To produce guidance on where surface allocate appropriate sites for development and water should be managed and appropriate identify how flood risk can be reduced as part criteria to be used in the consideration of of the development plan process”. site-specific flood risk assessments.

The objectives of this SFRA have expanded on The SFRA will include the preparation of Flood the above statement as follows: Zone mapping, that fulfil the recommendations LL To provide for an improved understanding of The Planning System and Flood Risk of flood risk issues within the development Management – Guidelines for Planning plan; Authorities (OPW/DoEHLG, 2009). This SFRA LL To detail the appropriate scope or level of will inform the County Development Plan 2013 – detail necessary for a strategic flood risk 2019 (and subsequent Local Area Plans and Town assessment of a county development plan; Development Plans) policies and zonings and LL To carry out a flood risk assessment based will be used as a decision tool in development on existing datasets and survey work, as management and assessment of planning appropriate, leading to a suite of flood applications and flood risk assessments.

1.3 Report Structure

This SFRA considers the broader settlement and objectives of the County Development strategy of the Greater Dublin Area Regional Plan. Planning Guidelines and countywide policies

1 The Planning System and Flood Risk Management, Guidelines for Planning Authorities, DEHLG and OPW, November 2009.

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This report gives a brief background to to the Meath County Development Plan. The the study area; explains the concepts and SFRA includes a review of flood risk in each definitions of flood risk terms; reviews the settlement indicating where, application of indicators of flood risk based on the data these policies is adequate to allow future available; details the methodology behind development or where high development the preparation of the Flood Zone Mapping pressures require a more detailed assessment and discusses recommended policies and of flood risk at Local Area or Town Plan stage. objectives for flood risk management in relation

2. STUDY BACKGROUND

2.1 StIntroductionrategic Flood Risk Assessment for County Meath Chapter 2

The2. studySTUDY area BACKGROUNDcomprises the whole of County nature of settlement. The county falls under the Meath, and to give context to the study, this jurisdiction of the Mid-East Regional Planning chapter provides an overview of the study area, Authority. The Mid East and the Dublin area are 2.1 Introduction the drainage catchment, the population and the known as the Greater Dublin Area. The study area comprises the whole of County Meath, and to give context to the study, this chapter provides an overview of the study area, the drainage catchment, the population and the 2.2 naDrainageture of sett lCatchmentsement. The county falls under the jurisdiction of the Mid-East Regional Planning Authority. The Mid East and the Dublin area are known as the Greater Dublin Area.

County2.2 D Meathraina gise a Clargeatc hcountymen twiths an area of Nanny, Broadmeadow, Blackwater, Delvin and 2 2,335kmCounty M andeat liesh is withina larg ethe co uGreaternty wit Dublinh an a rArea.ea of 2,33Tolka5km 2River. and l ieThes w countyithin th alsoe Gr ehasate ar D10.4kmublin A rea. coastline on the Irish Sea, which includes the The river catchments that lie within Co. Meath, illustrated in Figure 2-1 include the Boyne, Dee, The river catchments that lie within Co. Meath, coastal area of Bettystown and Laytown. Nanny, Broadmeadow, Blackwater, Delvin and Tolka River. The county also has a 10.4km illustratedcoastline ino nFigure the I r2-1ish includeSea, wh theich Boyne,include sDee, the coastal area of Bettystown and Laytown.

FigureFigur e2 ‑21- 1 Rivers Rive rands an Catchmentsd Catchmen ints Co.in C Meatho. Mea th

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River Name Length2 (km)

Boyne 82.4

Blackwater [Kells] 31.5

Nanny [Meath] 31.5

Dee 31.3

Athboy 30.5

Moynallty 25.4

Skane 19.4

Broadmeadow 17.8

Hurley 16.3

Stonyford 15.7

Knightsbrook 15.2

Inny [Shannon] 14.7

Tolka 14.7

Mattock 12.1

Yellow [Blackwater (Kells)] 11.4

Devlin’s 11.3

Fairyhouse (Stream) 11.0

Killary (Water) 10.7

Pinkeen 10.7

Kinnegad (Kilwarden) 9.2

Rye Water 8.9

Boycetown 8.9

Mosney 8.6

Ward 8.4

Blackwater [Longwood] 8.4

Deel [Raharney] 7.1

Delvin 6.8

Castlejordan 4.9

Glyde 1.6

Table 2‑1 River Lengths in Co. Meath

2 Note: River lengths are based on the digitised length of river within the County Meath boundary.

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2.3 People, Property and Infrastructure

The county has a population of 184,135 based an increase of 21,203 (13%) on the population on final figures from the 2011 Census3. This is recorded in the 2006 Census of 162,831.

2.4 Environment

There are a number of environmental designations in place in County Meath and there are listed in the following three tables.

SAC Site Name Site Code

Killyconny Bog (Cloghbally) 000006

Rye Water Valley/Carton 001398

White Lough, Ben Loughs and Lough Doo 001810

Boyne Coast and Estuary 001957

Lough Bane and Lough Glass 002120

River Boyne and River Blackwater 002299

Moneybeg and Clareisland Bogs 002340

Mount Hevey Bog 002342

Table 2‑2 County Meath Special Areas of Conservation (SACs)

SPA Site Name Site Code

Lough Sheelin 004065

Boyne Estuary 004080

River Boyne and River Blackwater 004232

River Nanny Estuary and Shore 004158

Table 2‑3 County Meath Special Protection Areas (SPAs)

NHA Site Name Site Code

Jamestown Bog 001324

Girley Bog 001580

Molerick Bog 001582

Table 2‑4 County Meath Natural Heritage Areas (NHAs) There are also 27 proposed Natural Heritage Areas (pNHAs) in County Meath.

3 Source: www.cso.ie Census 2011 Final Results

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2.5 Flood Policy and Legislation

Historically, flood risk management in Ireland recommended in the preparation of flood risk focused on land drainage improvements for and hazard maps and flood risk management the purposes of agricultural activities. The plans. These recommendations tie in with the Browne Commission (Report of The Drainage requirements of the EU Floods Directive and Commission 1938-1940) which examined the National CFRAM Programme is currently flooding and the improvement of land through underway to achieve these objectives. The EU drainage resulted in the development of the legislation relating to water policy and flood risk Arterial Drainage Act 1945, which aimed to management is outlined in Sections 2.5.1 and consolidate previous drainage legislation. 2.5.2 below. The Act led to the establishment of a central drainage authority, within the OPW, with 2.5.1 EU Water Framework Directive responsibility for the provision and maintenance of arterial drainage on a catchment wide basis. The European Water Framework Directive4 was The 1945 Act was amended in 1995 to permit adopted in 2000, in a new and innovative step, the provision of schemes to benefit urban to manage and protect water, based on natural areas. and topographical boundaries rather than national or political boundaries. The Directive The Planning and Development Act 2000-2011 is an integrated approach to water policy that legislates to provide for proper planning and considers all aspects of the water environment sustainable development. Under Section 28 from groundwater, rivers, lakes, estuaries, of this Act, the Minister of The Environment, transitional waters and coastalwaters. It set Heritage and Local Government issued environmental objectives that deals with a guidelines, The Planning System and Flood full range of pressures that threaten water Risk Management Guidelines for Planning resources i.e pollution, abstraction, flow Authorities, which give guidance on the regulation/transfer and habitat impacts. The consideration of flood risk in the preparation Directive is implemented in six year recurring of development plans, local area plans and in cycles, through the preparation and publication the assessment of planning applications. The of River Basin Management Plans (RBMPs). content of these guidelines, along with an The WFD was transposed in Irish law in 2003 introduction to the concepts and definitions of by the European Communities (Water Policy) flood risk, are discussed in detail in Chapter 3. Regulations 20035.

A review of national flood policy, was 2.5.2 EU Floods Directive undertaken by an Inter-Departmental Review The European Floods Directive6 was adopted Group, lead by the Minister of State. The in November 2007 and set out requirements Report of the Flood Policy Review Group, which for each member state, to assess, manage was published in 2004, considers the roles and and reduce flood risk. The Directive requires responsibilities of various bodies in relation member states to carry out a preliminary to flood risk management and sets out a new flood risk assessment to identify areas at risk policy for flood risk management in Ireland. The of flooding by 2011, to undertake detailed recommended policies focus on managing flood hydraulic modelling and produce flood risk risk, rather than relying only on flood protection and hazard maps by 2013 and to establish measures. A catchment wide approach is

4 EU Water Framework Directive (2000/60/EC) 5 European Communities (Water Policy) Regulations SI 722/2003 6 EU Floods Directive (2007/60/EC)

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managementresponsib iplanslities focused of t hone prevention,OPW a nd othebasinr p managementublic bod iplanses i(RBMPs)n the andim pfloodlem entation of the protection and preparedness by 2015. The risk management plans (FRMPs) is essential EUDi r‘Floods’ective Directive and d ewastai ltransposeds the pro intoce ss for imandple publicmen tparticipationation of t andhe consultationmeasures should set o ut in the flood Irishrisk law m abyn theag eEuropeanment p Communitieslans. be integrated where possible. (AssessmentAn integra tanded Managementapproach is of n Floodeces sRisks)ary b etwe en the WFD and the Floods Directive. Coordination in 7 Regulationsthe prepa r2010.ation The of Regulationsthe river bsetas outin mthea nagemCurrently,ent pla inn sline (R withBM Pthes) aboveand flegislationlood risk management plans responsibilities(FRMPs) is ofe sthese nOPWtial andan dother pu publicblic participtheatio Nationaln and CFRAM consu Programmeltation sh iso uunderway,ld be i ntegrated where bodiespossi binl ethe. implementation of the Directive with Flood risk assessment and management and details the process for implementation (CFRAM) studies being carried out across seven ofC utherr emeasuresntly, in setlin eout w init hthe t hfloode ab riskove legislatiorivern th basine N adistrictstional inC FIreland.RAM PAsro illustratedgramme in i s underway, with managementFlood risk plans.assessment and management (theCF FigureRAM) 2s‑2t ubelowdies Countybeing Meathcarrie liesd oacrossut ac ross seven river basin districts in Ireland. As illustrated inthree the riverFigu basinre 2 districts;-2 belo wEastern, Coun Neaghty Me Bannath lies across three Anriv integrateder basin approach distric tiss; necessary Eastern , Neagh Banandn aShannon.nd Sha nMorenon information. More oninf theorm CFRAMation on the CFRAM betweenprogram them WFDe is aandva ithelab lFloodse on wDirective.ww.cfr a m.ie. programme is available on www.cfram.ie. Coordination in the preparation of the river

Figure 2‑2 River Basin Districts Figure 2-2 River Basin Districts

7 European Communities (Assessment and Management of Flood Risks) Regulations 2010 (SI 122/2010) 2.6 Planning Authorities The Regional Planning Guidelines for the Greater Dublin Area 2010 – 2022, combines two 304 2011regs5504ional SFRauAt hLoiveri tReporties; D(v1.11ubli nDecember Regio n2012).docal Authority and the Mid-East Regional Authority. The guidelines cover the councils of Dun Laoghaire-Rathdown, Dublin City, Fingal and South Dublin in

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Strategic Flood Risk Assessment for County Meath A6

Strategic Flood Risk Assessment for County Meath Chapter 2

2.6 Planning Authorities the Dublin Region and Kildare, Meath and Wicklow County Council areas in the Mid-East Region. The RPGs breakdown the overall objectives of the National Spatial Strategy to a regional level and inform the subsequent Development Plans in each Council area. The Regional Planning Guidelines for the Greater Dublin Area 2010 – 2022, combines two regional authorities; Dublin Regional Authority and the Mid-East Regional Authority. The guidelines cover the councils of Dun Laoghaire-Rathdown, Dublin City, Fingal and South Dublin in the Dublin Region and Kildare, Meath and Wicklow County Council areas in the Mid-East Region. The RPGs breakdown the overall objectives of the National Spatial Strategy to a regional level and inform the subsequent Development Plans in each Council area.

2.6.1 Local Area Plan Settlements

The settlements within County Meath that will be addressed by individual Local Area Plans and Town Development Plans are listed below

Figure 2-3 Greater Dublin Area Figure 2‑3 Greater Dublin Area 2.6.1 Local Area Plan Settlements The settlements within County Meath that will be addressed by individual Local Area Plans and Ashbourne DunshaughlinTown Development MaynoothPlans are Environslisted below: Athboy Enfield • Ashbourne Mornington • Dunshaughlin • Maynooth Environs • Athboy • Enfield • Mornington Ballivor Gibstown • Ballivor Mornington East • Gibstown • Mornington East • Bettystown • Gormanston • Moynalty Bettystown Gormanston • Carlanstown Moynalty • Julianstown • Navan • Carnaross • Kells • Nobber Carlanstown Julianstown • Clonard Navan • Kentstown • Oldcastle • Crossakeel • Kilbride • Rathcairn Carnaross Kells • Donacarney Nobber • Kilcock • Rathmolyon • Donore • Kildalkey • Ratoath Clonard Kentstown • Drogheda SouOldcastleth • Kilmainhamwood • Slane • Drumconrath • Kilmessan • Stamullen Crossakeel Kilbride Rathcairn • Duleek • Laytown • Summerhill • Dunboyne Clonee Pace • Longwood • Trim Donacarney Kilcock Rathmolyon

Donore Kildalkey Ratoath Drogheda South Kilmainhamwood Slane

Drumconrath Kilmessan Stamullen

Duleek Laytown Summerhill

Dunboyne Clonee Pace Longwood Trim

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Strategic Flood Risk Assessment for County Meath Chapter 3 3. THE PLANNING SYSTEM & FLOOD RISK MANAGEMENT GUIDELINES3. THE PLANNING SYSTEM & FLOOD RISK MANAGEMENT GUIDELINES

3.1 3.Introduction1 Introduction Prior to discussing the management of flood risk, it is helpful to understand what is meant by the term. It is also important to define the components of flood risk in order to apply the principles locations. Flooding can often be beneficial, Priorof t tohe discussing Planning Stheys tmanagementem and Floo ofd Rfloodisk M anagement in a consistent manner. risk, it is helpful to understand what is meant and many habitats rely on periodic inundation. byT thehe term.Plan n Itin isg alsoSy simportanttem an dto Fdefinelood theRis k MaHowever,nagemen whent: Gu floodingidelines interactsfor Pla nwithnin ghuman Aut horities, published in November 2009, describe flooding as a natural process that can occur at any time components of flood risk in order to apply the development, it can threaten people, their and in a wide variety of locations. Flooding can often be beneficial, and many habitats rely on principles of the Planning System and Flood property and the environment. periodic inundation. However, when flooding interacts with human development, it can threaten Riskpeo Managementple, their pr oinp ea rconsistentty and the manner. enviro n ment. This Section (3) will firstly outline the definitions TheTh iPlannings Sectio Systemn (3) w andill fFloodirstly Riskoutl ine the definitiofon floods of friskloo dand ris thek a nFloodd th eZones Floo dused Zo nase sa used as a Management:planning to oGuidelinesl; a discu forssi oPlanningn of th e principles ofplanning the pla tool;nnin ag discussionguideline sof a thend principlesthe man aofg ement of Authoritiesflood risk, publishedin the pla innn Novembering system 2009, follo ws. the planning guidelines and the management of describe flooding as a natural process that flood risk in the planning system follows. can3. 2occur De atfi nanyiti otimen o andf F lino ao wided Ri svarietyk of Flood risk is generally accepted to be a combination of the likelihood (or probability) of flooding and the potential consequences arising. Flood risk can be expressed in terms of the following 3.2 reDefinitionlationship: of Flood Risk

Flood riskF isl ogenerallyod Ris acceptedk = P r otob beab ai lity of FlooThedi nassessmentg x Con sofe qflooduen riskces requires of Fl oano ding combination of the likelihood (or probability) understanding of the sources, the flow path of of flooding and the potential consequences floodwater and the people and property that can arising.The a Floodssess mrisken cant o bef fexpressedlood risk inr etermsquire sof an ubend affected.erstandi n Theg o sourcef the -s pathwayources, - treceptorhe flow path of theflo followingodwater relationship:and the people and property that cmodel,an be shownaffecte belowd. T hine Figuresourc 3e‑ 1-, pillustratesathway - receptor model, shown below in Figure 3-1, illustrates tthishis andand is i sa widelya wide usedly us environmentaled environm emodelntal m odel to Floodasses sRisk and =in fo Probabilityrm the man aofge Floodingment of r ixsk . to assess and inform the management of risk. ConsequencesFigure of3- 1Flooding Source Pathway Receptor Model

Figure 3‑1 Source Pathway Receptor Model Source: Figure A1 The Planning System and Flood Risk Management Guidelines Technical Appendices Source: Figure A1 The Planning System and Flood Risk Management Guidelines Technical Appendices

Principal sources of flooding are rainfall or include people, their property and the Principal sources of flooding are rainfall or higher than normal sea levels while the most common higher than normal sea levels while the most environment. All three elements must be pathways are rivers, drains, sewers, overland flow and river and coastal floodplains and their present for flood risk to arise. Mitigation commondefence pathways assets. are Re rivers,cepto rdrains,s can sewers,include people, their property and the environment. All three measures, such as defences or flood resilient overlandelemen flowts m uandst brivere p randese ncoastalt for flfloodplainsood risk t o arise. Mitigation measures, such as defences or flood and their defence assets. Receptors can construction, have little or no effect on sources

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of flooding but they can block or impede exceedance probability (AEP) or return period pathways or remove receptors. (in years). A 1% AEP flood indicates the flood The planning process is primarily concerned event that will occur or be exceeded on average with the location of receptors, taking once every 100 years and has a 1 in 100 chance appropriate account of potential sources and of occurring in any given year. pathways that might put those receptors at risk. Return period is often misunderstood to be 3.2.1 Likelihood of Flooding the period between large flood events rather than an average recurrence interval. Annual Likelihood or probability of flooding or a exceedance probability is the inverse of return particular flood event is classified by its annual period as shown in Table 3‑1.

Return Period (Years) Annual Exceedance Probability (%)

2 50

100 1

200 0.5

1000 0.1

Table 3‑1 Probability of Flooding

Considered over the lifetime of development, age-structure, of the population, presence and an apparently low-frequency or rare flood reliability of mitigation measures etc). has a significant probability of occurring. For example: The Planning System and Flood Risk LL A 1% flood has a 22% (1 in 5) chance of Management guidelines provides three occurring at least once in a 25-year period - vulnerability categories, based on the type of the period of a typical residential mortgage; development, which are detailed in Table 3.1 of LL And a 53% (1 in 2) chance of occurring in a the Guidelines, and are summarised as: 75-year period - a typical human lifetime. LL Highly vulnerable, including residential properties, essential infrastructure and 3.2.2 Consequences of Flooding emergency service facilities; LL Less vulnerable, such as retail Consequences of flooding depend on the and commercial and local transport hazards caused by flooding (depth of water, infrastructure; speed of flow, rate of onset, duration, wave- LL Water compatible, including open space, action effects, water quality) and the vulnerability outdoor recreation and associated essential of receptors (type of development, nature, e.g. infrastructure, such as changing rooms.

3.3 Definition of Flood Zones

In the Planning System and Flood Risk These Zones indicate a high, moderate or Management guidelines, Flood Zones are used low probability of flooding from fluvial or tidal to indicate the likelihood of a flood occurring. sources and are defined below in Table 3‑2.

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It is important to note that the definition of the Flood Zones is based on an undefended scenario and does not take into account the presence of flood protection structures such as flood walls or embankments. This is to allow for the fact that there is a residual risk of flooding behind the defences due to overtopping or breach and that there may be no guarantee that the defences will be maintained in perpetuity.

It is also important to note that the Flood as groundwater or pluvial, into account, so an Zones indicate flooding from fluvial and tidal assessment of risk arising from such sources sources and do not take other sources, such should also be made.

Zone Description

Zone A This zone defines areas with the highest risk of flooding High probability of flooding. from rivers (i.e. more than 1% probability or more than 1 in 100) and the coast (i.e. more than 0.5% probability or more than 1 in 200).

Zone B This zone defines areas with a moderate risk of flooding Moderate probability of flooding. from rivers (i.e. 0.1% to 1% probability or between 1 in 100 and 1 in 1000) and the coast (i.e. 0.1% to 0.5% probability or between 1 in 200 and 1 in 1000).

Zone C This zone defines areas with a low risk of flooding from Low probability of flooding. rivers and the coast (i.e. less than 0.1% probability or less than 1 in 1000).

Table 3‑2 Definition of Flood Zones

3.4 Objectives and Principles of the Planning Guidelines

The Planning System and Flood Risk LL avoid new developments increasing flood Management guidelines describes good flood risk elsewhere, including that which may risk practice in planning and development arise from surface run-off; management. Planning authorities are directed LL ensure effective management of residual to have regard to the guidelines in the preparation risks for development permitted in of Development Plans and Local Area Plans, and floodplains; for development control purposes. LL avoid unnecessary restriction of national, regional or local economic and social The objective of the Planning System and Flood growth; Risk Management guidelines is to integrate LL improve the understanding of flood risk flood risk management into the planning among relevant stakeholders; and process, thereby assisting in the delivery LL ensure that the requirements of EU and of sustainable development. For this to be national law in relation to the natural achieved, flood risk must be assessed as early environment and nature conservation are as possible in the planning process. Paragraph complied with at all stages of flood risk 1.6 of the Guidelines states that the core management”. objectives are to: The guidelines aim to facilitate ‘the transparent LL “avoid inappropriate development in areas consideration of flood risk at all levels of the at risk of flooding; planning process, ensuring a consistency of

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approach throughout the country.’ SFRAs LL Adopting a staged and hierarchical therefore become a key evidence base in approach to the assessment of flood risk; meeting these objectives. LL Adopting a sequential approach to the management of flood risk, based on the The Planning System and Flood Risk frequency of flooding (identified through Management guidelines works on a number of Flood Zones) and the vulnerability of the key principles, including: proposed land use.

3.5 The Sequential Approach and Justification Test

Each stage of the FRA process aims to adopt within the development plan. If de-zoning a sequential approach to management of flood is not possible, then rezoning from a higher risk in the planning process. vulnerability land use, such as residential, to a less vulnerable use, such as open space may Where possible, development in areas be required. identified as being at flood risk should be avoided; this may necessitate de-zoning lands

Figure 3‑2 Sequential Approach Principles in Flood Risk Management Source: The Planning System and Flood Risk Management (Figure 3.1)

Where rezoning is not possible, exceptions The Justification Test has been designed to the development restrictions are provided to rigorously asses the appropriateness, or for through the Justification Test. Many otherwise, of such developments. The test is towns and cities have central areas that are comprised of two processes; the Plan-making affected by flood risk and have been targeted Justification Test, and the Development for growth. To allow the sustainable and Management Justification Test. The latter is compact development of these urban centres, used at the planning application stage where it development in areas of flood risk may be is intended to develop land that is at moderate considered necessary. For development in such or high risk of flooding for uses or development areas to be allowed, the Justification Test must vulnerable to flooding that would generally be be passed. considered inappropriate for that land.

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Table 3‑3 shows which types of development, development zonings to those which are based on vulnerability to flood risk, are ‘appropriate’ and thereby avoid the need to appropriate land uses for each of the Flood apply the Justification Test. Zones. The aim of the SFRA is to guide

Flood Zone A Flood Zone B Flood Zone C

Highly vulnerable development Justification Test Justification Test Appropriate (Including essential infrastructure)

Less vulnerable development Justification Test Appropriate Appropriate

Water-compatible development Appropriate Appropriate Appropriate

Source: Table 3.2 of The Planning System and Flood Risk Management

Table 3‑3 Matrix of Vulnerability versus Flood Zone

3.6 Scales and Stages of Flood Risk Assessment

Within the hierarchy of regional, strategic and opportunities for reducing flood risk. This site-specific flood-risk assessments, a tiered SFRA will revisit and develop the flood risk approach ensures that the level of information identification undertaken in the RFRA, and is appropriate to the scale and nature of the give consideration to a range of potential flood-risk issues and the location and type of sources of flooding. An initial flood risk development proposed, avoiding expensive assessment, based on the identification flood modelling and development of mitigation of Flood Zones, will also be carried out measures where it is not necessary. The stages for those areas, which will be zoned for and scales of flood risk assessment are shown development. Where the initial flood risk in Table 3‑4 and comprise: assessment highlights the potential for a significant level of flood risk, or there is LL Regional Flood Risk Appraisal (RFRA) – conflict with the proposed vulnerability of a broad overview of flood risk issues across development, then a site specific FRA will a region to influence spatial allocations for be recommended, which will necessitate a growth in housing and employment as well detailed flood risk assessment. as to identify where flood risk management measures may be required at a regional LL Site Specific Flood Risk Assessment level to support the proposed growth. (FRA) – site or project specific flood This should be based on readily derivable risk assessment to consider all types of information and undertaken to inform the flood risk associated with the site and Regional Planning Guidelines. propose appropriate site management and mitigation measures to reduce flood risk LL Strategic Flood Risk Assessment to and from the site to an acceptable level. (SFRA) – an assessment of all types of If the previous tiers of study have been flood risk informing land use planning undertaken to appropriate levels of detail, it decisions. This will enable the Planning is highly likely that the site specific FRA will Authority to allocate appropriate sites require detailed channel and site survey, for development, whilst identifying and hydraulic modelling.

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Initial Detailed

Flood Risk Flood Risk Flood Risk Scale of Assessment Identification Assessment Assessment

Regional Flood Risk Appraisal 3 U U

Strategic Flood Risk Assessment - County 3 P U

Strategic Flood Risk Assessment - City / 3 3 P town

Site Specific Flood Risk Assessment 3 3 3

Key: P = Probably needed to meet the requirements of the Justification Test U = Unlikely to be needed ü = Required to be undertaken

Source: The Planning System and Flood Risk Management (Table A3)

Table 3‑4 Flood risk stages required per scale of study undertaken

3.7 SFRA and SEA

As detailed in the Planning System and Flood recommendations. These will be assessed Risk Management guidelines, the steps in the against environmental criteria for the plan area development plan process and its Strategic and the SEA will detail mitigation measures and Environmental Assessment (SEA) need to future monitoring requirements. be supported by appropriate analysis of flood risk. The SEA process addresses any likely A summary of the likely effects of the plan on the significant effects on the environment and environment, through exposing new development their amelioration, from the implementation of and their occupants to potential flood risks development plans through all stages of the and any adverse impacts as a result, will be plan-making process. addressed in the SEA process and summarised in the environmental report element of the overall The SEA report will consider the environmental development plan. The integration of the SFRA effects of the Development Plan, with the SEA and wider Development Plan including flood management policies and process is shown in Figure 3‑3.

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Source: Fig 4.2 of the Planning Guidelines and Flood Risk Management Figure 3‑3 Development Plan Preparation where flood risk is scoped as an issue Figure 3-3 Development Plan Preparation where flood risk is scoped as an issue Source: Fig 4.2 of the Planning Guidelines and Flood Risk Management

4. DATA COLLECTION AND AVAILABILITY

4.1 Overview

There are a number of valuable sources of flood Tolka River Flood Study. The following lists the data available for County Meath, including major datasets used to compile the county flood map projects such as the Fingal East Meath FRAMS, and gives an assessment of the data quality and broadscale flood mapping such as the national the confidence in its accuracy. PFRA study and other local studies such as the

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Description Coverage Quality Confidence Used

MODEL DATA

FEM FRAFEM FRAMS Flood Fingal East High High Yes Outlines Meath

Irish Coastal Protection Whole coastline High High No; Meath coast Strategy Study (ICPSS) tidal of county was modelled in flood outlines detail under FEM FRAMS

National PFRA Study Flood Countywide Moderate Moderate Yes Outlines

JFLOW® Flood Mapping Countywide Moderate Moderate Yes

Eastern CFRAM FRR and Countywide (but Moderate Moderate Yes North West Neagh Bann only for specific CFRAM FRR (Verified PFRA) FRR sites)

Tolka River Flood Study Dunboyne High High Yes Clonee Pace

Kilcock Flood Study Kilcock High High Yes

Swan River Flood Risk Navan (south High High Yes Assessment west)

Mornington Flood Alleviation Mornington East High High Yes Study

Kells Stormwater Drainage Newrath High Moderate Yes Study incorporating JFLOW® Stream, Kells Flood Mapping

Table 4‑1 Model Data Available

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Description Coverage Quality Confidence Used

OTHER DATA

Regional Flood Risk Appraisal Midlands and Moderate (but Low Reviewed South East broadscale) Region

Alluvial Soil Maps Full Study Moderate Low Used in the Area RFRA to provide initial assessment

Groundwater vulnerability Broadscale, Moderate Low Initial maps County wide assessment of groundwater vulnerability.

Historic Flood Records Broad, spot Various Various Yes indirectly including photos, aerial coverage to validate photos and reports. Flood Zones & identify other flood sources

Historic Flood Outlines Tolka River Unknown Unknown Yes indirectly to validate Flood Zones

Benefiting Land Maps and Whole county Low Low Indirectly Drainage Districts to validate modelled outlines.

Walkover Survey Selected Moderate Low Yes to validate locations outlines at key settlements

Table 4‑2 Other Data Available

A description of each dataset is given in preparation of the Flood Zone map for the the following sections. How this data has County Meath SFRA is explained in more detail been used and the methodology behind the in Chapter 7.

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4.2 FEM FRAMS Flood Outlines

Fingal County Council along with project defined as High Priority Watercourses (HPW) partners Meath County Council and the Office or Medium Priority Watercourses (MPW) and of Public Works (OPW) commissioned the modelled in according detail. The FEM FRAMS Fingal East Meath Flood Risk Assessment and models developed consist of 1D river models, Management Study (FEM FRAMS) in 2008 1D-2D linked models and 2D coastal models. to investigate the high levels of existing flood The model results were used to map flood risk in the Fingal East Meath area. The study outlines for a range of scenarios, including the included detailed hydraulic modelling of 23 current and future, defended and undefended rivers and streams, 3 estuaries and the Fingal scenarios. and Meath coastline. The watercourses are

4.3 National PFRA Study Fluvial Flood Outlines

The Preliminary Flood Risk Assessment Using the OPW’s 5m national digital terrain (PFRA) is a national screening exercise that model (DTM) a cross section was determined was undertaken to identify areas at potential at 100m spacings. The Manning’s equation, a flood risk. The PFRA is a requirement of the hydraulic equation for normal flow was used EU Floods Directive and the publication of this to calculate a flood level which was then work will lead to, and inform, more detailed extrapolated across the DTM to determine the assessment that will be undertaken as part of flood extent. This exercise was completed for the Catchment Flood Risk Assessment and all river catchments greater than 1km2. Management (CFRAM) studies. The PFRA study considered flooding from a number of This methodology does not take into account sources; fluvial, tidal, pluvial and groundwater defences, channel structures or channel works. and prepared a suite of broadscale flood maps. Potential sources of error in the mapping include local errors in the DTM or changes to For the preparation of the PFRA fluvial flood the watercourse flow route due to an error in maps, flood flow estimates were calculated at mapping or new development. nodes every 500m intervals along the entire river network. (The river network is the EPA The PFRA mapping was completed as part of ‘blue-line’ network, which, for the most part, a desk based study and was put on display matches the rivers mapped at the 1:50,000 for public consultation and comment. A site scale Discovery Series OS mapping). This based review of the PFRA, at selected sites, flow estimation was based on the OPW Flood is ongoing as the National CFRAM programme Studies Update research programme. An continues. In County Meath at selected Flood assumption was made that the in-channel flow Risk Review Sites, the PFRA outlines have equates to the mean annual flood and so the been reviewed by RPS Consulting as part of the out of bank flow for a particular AEP event was Flood Risk Review stage of the Eastern CFRAM determined by deducting the mean annual flood and by JBA Consulting as part of the Flood Risk from the flood flow estimate for that probability Review for the North-West and Neagh-Bann event. CFRAM.

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4.4 JFLOW® Flood Mapping

JBA developed software, known as JFLOW®8 curves and determine flood flows for different to undertake multi-scale two dimensional return periods. hydraulic fluvial and tidal flood modelling. The fluvial flood mapping process involved two JFLOW®, a two dimensional hydraulic stages, hydrology and hydraulic modelling. modelling software, was used to simulate JBA Consulting developed in-house software overland flooding. Cross sections were tools to interpolate catchment descriptors generated at each inflow point to define the from a number of environmental datasets extent of the area over which to route the flow. and produced an automated method for Flow was routed over a digital terrain model calculating design flows. The method used and this was the OSi national 10m height model to calculate flows was based on the Flood with updated height data in over 30 urban Estimate Handbook (FEH)9 Statistical Method areas. This process was completed for all river and is in line with the methods of the Flood catchments greater than 10km2 and in some Studies Update (FSU) which is currently under urban areas, including Trim, Drogheda and development. Index flows were generated at Dunboyne in Co. Meath, greater than 3km2. 300m intervals along the entire river network. Annual Maximum flow data from the OPW JFLOW® results were subject to several 10 Hydrodata website were used to adjust iterations of manual checking and model re-runs. the index flows by allocating ‘donor’ gauges, However the accuracy of the flood mapping is whereby local gauges are used to compare directly correlated to the DTM and individual flow and adjust index flows for a given catchment. structures such as bridges, culverts, weirs and Pooled data was used to generate growth sluices are not explicitly modelled.

4.5 National CFRAM Programme

Following on from the PFRA study, the OPW CFRAM and the Shannon CFRAM. The commenced appointment of consultants to FEM FRAMS was a pilot study that has been carry out a more detailed flood risk assessment completed and detailed model output and flood on key flood risk areas. This work will be maps are available for this area (see section undertaken under the national CFRAM 4.2 above). The initial Flood Risk Review (FRR) programme across seven river basin districts in stage of the Eastern and North-West Neagh- Ireland. The CFRAM programme commenced Bann CFRAM has been completed and this with three pilot studies covering the River Lee, included a site based review of the PFRA flood Fingal East Meath area and the River Dodder. outlines at a number of settlements. Following A further 6 studies are currently underway in this review, any sites recommended as an Area the East, South-East, South-West, West, North- for Further Assessment (AFA) will be included West and Neagh-Bann regions. in the subsequent detailed assessment stage of each CFRAM study. Detailed flood risk and County Meath mainly falls under the jurisdiction hazard maps will be produced for all AFAs and of the Eastern CFRAM but also falls under under the EU Floods Directive, will be available the study area of the Fingal East Meath (FEM by the end of 2013 with Management Plans by FRAMS), the North West and Neagh Bann the end of 2015.

8 JFLOW® is a registered UK trade mark in the name of Jeremy Benn Associates Limited 9 Flood Estimation Handbook, Institute of Hydrology, 1999 10 www.opw.ie/hydro

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4.6 Local Flood Studies

Local studies were made available to inform the current flooding was followed by a scenario flood mapping process and these are: impact analysis which looked at measures to alleviate flooding upstream of the old LL Tolka River Flooding Study – this railway embankment. Options proposed study was commissioned by Dublin City included the replacement of under- Council in association with Fingal County capacity culverts and the construction of Council, Meath County Council and the flood defences. Modelled flood extents, Office of Public Works (OPW) in 2002. representing the existing flood scenario, The recommendations for the flood relief were used to inform the preparation scheme have now been constructed and of the county wide Flood Zone map, protect a significant area in and around indication is provided of the areas that will the Dunboyne, Clonee, Pace settlement. potentially benefit from the defences once Based on the outcome of this study, the constructed (during 2012). existing 1% AEP predicted flood extent has been used while compiling the flood LL Mornington Flood Alleviation Study map, indication is provided of the areas – this study was commissioned to that are benefiting from the defences. The investigate the potential mitigation of predicted flood extents are available on the Mornington from the impacts of flooding. OPW website, www.floodmaps.ie. It was completed to feasibility phase in 2003 and has subsequently been LL Flood Risk Assessment and constructed. The scheme is operational Management Study for the River but at the time of writing (April 2012) is Rye Water, Kilcock. – this study was awaiting the completion of a pumping commissioned by a consortium of station. landowners in Kilcock. The study assesses existing and future flood risk in the area. LL Kells Stormwater Drainage Study - the The modelled flood extents for the existing 2006 Drainage Study resulted in a clear scenario was reviewed and used in the definition of existing flood risk for the compilation of the County Meath flood Newrath Stream, highlighting areas of map, indication is provided of the areas significant flooding from upstream of that will potentially benefit from defences, Bective Street through to the downstream once implemented. The scheme has been junction with the River Blackwater. The approved by OPW, Kildare County Council study provides flood probability mapping and Meath County Council and has entered (for the 1 in 200 year event, but not for the planning process. Flood Zone A or B) and management options for flood risk along with master LL Swan River Flood Risk Assessment – this planning. Data from the study has been study was commissioned by Meath County used in combination with additional LiDAR Council to assess flood risk associated with DTM to provide Flood Zone mapping using the Swan River. The initial study, carried JFLOW® for the Newrath Stream. out by RPS Consulting which assessed

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4.7 Regional Flood Risk Appraisal of the Greater Dublin Area

The Greater Dublin Area Regional Planning The RPG identify the settlement hierarchy of Guidelines (RPG) 2010 – 202211, put forward the the towns within the region. It is important overall planning strategy for the Mid-East and that this is considered when identifying Dublin areas. Chapter 9 of the RPG, contains development potential; to ensure growth at a Regional Flood Risk Appraisal (RFRA), which a suitable and sustainable level within each sets out the key policy recommendations with settlement, appropriate to their position in regard to avoiding and managing flood risk in the hierarchy. Table 4‑3, below shows the the Greater Dublin Area. towns in County Meath which are identified in the Regional Planning Guidelines Settlement Hierarchy.

Settlements in Co. Meath Hierarchy

Navan, Drogheda (environs) Large Growth Towns I

Dunboyne Large Growth Towns II

Ashbourne, Dunshaughlin12, Kells, Trim Moderate Sustainable Growth Towns

Table 4‑3 Settlement Hierarchy hazard mapping website, www.floodmaps. The RFRA makes reference to the Catchment ie (see 4.9 below); and Flood Risk Assessment and Management Programme (CFRAM) that are currently LL Soils maps - Teagasc national soils mapping underway. Once completed these studies shows locations of alluvial deposits (see will be a valuable source of data for flood risk 4.8 below); management and planning. RFRA lists the following datasets available to inform flood risk LL Irish Coastal Protection Strategy Study, management in County Meath: providing flood and erosion risk maps for the entire Meath coastline (ongoing at the time of publication of the RPG, the coastal LL Individual area flood studies including the Tolka Flooding Study, The Greater risk in County Meath has since been Dublin Strategic Drainage Study and covered in more detail in the FEM FRAMS) the Fingal East Meath Catchment Flood Risk Assessment and Management Based on the available data the RFRA identified (FEMFRAM) Study (ongoing at the time of that key towns in the GDA could be vulnerable publication of the RPG and has since been to flooding, particularly along the coast, completed); estuaries and lands proximate to the rivers flowing through the area. This includes the growth towns in the settlement and economic LL Flood Relief Schemes at Mornington, Tolka, Rye Water, Duleek, Boyne, Broadmeadow hierarchy. The RFRA states the importance and Ward; of Development and Local Area Plans for all areas of new development in the GDA being informed by the outputs of the CFRAM studies LL Records of historical flood locations displayed on the OPW’s national flood and by flood risk assessments for the areas

11 Downloadable from the Regional Planning Guidelines for the Greater Dublin Area website. http://www.rpg.ie/ 12 As stated in the RPGs, Dunshaughlin will become a Moderate Sustainable Growth Town following the granting of permission of a railway order for the Navan Rail Line Phase II, including a station at Dunshaughlin.

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in question, so that the flood risk potential with adjoining local authorities and regions of these locations fully informs the planning and in coordination with the relevant River process, using the most recent data available. Basin Management Plans. The Strategic Policy and recommendations for regional flood risk management identified by LL FR3 - Local authorities should take the the RFRA are as follows: opportunities presented to optimise improvements in biodiversity and amenity Strategic Policy FP1 when including policies and actions in ‘That flood risk be managed pro-actively at development plans/local area plans (such all stages in the planning process avoiding as flood plain protection and SuDS) for development in flood risk areas where possible existing and future developments. and by reducing the risks of flooding to and from existing and future development.’ LL FR4 - Plans and projects associated with flood risk management that have the Strategic Recommendations potential to negatively impact on Natura

LL FR1 - New developments should be 2000 sites will be subject to a Habitats avoided in areas at risk of flooding. Directive Assessment (HDA) according Alongside this, the RFRA recognises to Article 6 of the habitats directive and the need for continuing investment and in accordance with best practice and development within the urban centres of guidance. flood vulnerable designated growth towns and the City and for this to take place in The RPGs seek to emphasise the need to tandem with the completion of CFRAM protect the natural flood plains and riparian Studies and investment in comprehensive centres of all rivers that have not already been flood protection and management. built on; this should be explicitly stated and spatially designated in all future Development

LL FR2 - Development and Local Area Plans and Local Area Plans. Where CFRAM data should include a Strategic Flood Risk is not yet available, Local Authorities are to Assessment and all future zoning of land identify these areas using other data from for development in areas at risk of flooding the OPW and existing studies and historical should follow the sequential approach information and with additional studies where set out in the Departmental Guidance on necessary. Land required for current and future Flood Risk Management. All Flood Risk flood management should be safeguarded from Assessments and CFRAM studies should development. take place in coordination and consultation

4.8 Soil and Groundwater Vulnerability Maps

National soil and groundwater maps are catchment, mainly to the south west of County available from Teagasc and the Geological Meath. Survey of Ireland (GSI). Groundwater vulnerability maps, derived by the The Teagasc soil maps indicate locations of GSI, indicate the vulnerability index, which is mineral alluvium deposits which is a good based on a number of parameters including the indicator of flood risk and this information was following: used in the RFRA (see section 4.7). Based on the Teagasc soils maps, there are some LL Sub-soils that overlie the groundwater; alluvium soils deposits within the Boyne LL Type of recharge - whether point or diffuse;

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LL Thickness of the unsaturated zone through Clonee Pace, Kells, Kilmainhamwood, Laytown, which the contaminant moves. Moynalty, Navan, Oldcastle, Slane and Trim all over-lie ‘highly’ or ‘extremely’ vulnerable The more vulnerable the groundwater is to groundwater. contamination (i.e. passage of contaminants down through the soil), the more chance there Although there are no flood records listing is of the groundwater rising to the surface and ‘groundwater’ as a source of flooding, it is often causing flooding. difficult to distinguish groundwater and surface water in the historical records. The GSI mapping indicates that much of the groundwater in Meath is moderately to The PFRA study also investigated groundwater extremely vulnerable to contamination. The flood risk on a national level and based on extremely and highly vulnerable areas are the draft results of that study groundwater is focussed in the north-west of the county, not considered a risk in County Meath. It is around Kells and Oldcastle. recommended that future flooding events are monitored for source. Athboy, Carlanstown, Carnaross, Clonard, Crossakeel, Donore, Drumconrath, Dunboyne

4.9 Historic Flood Review

Records of past flooding are useful for looking historical flood events across the country and at the sources, seasonality, frequency and formed the basis of the RFRA. intensity of flooding. Historical records are mostly anecdotal and incomplete, but are useful Information is provided in the form of reports for providing background information. The flood and newspaper articles which generally history of County Meath will be summarised in relate to rare and extreme events. Since the this section, and referred to in the assessment establishment of the hazard mapping website, of flood risk to individual settlements. more records are available which identify more frequent and often recurring events. These The OPW hosts a National Flood Hazard tend to include memos and meeting records Mapping website13 that makes available from local authority area engineers, often information on areas potentially at risk from relating to road flooding. flooding. This website provides information on

13 www.floodmaps.ie

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Date of Flood Description

1922 or (1924) Coastal area of Meath (N.B. The Dublin Coastal Flooding Protection Project Final Report (2005) has reported this extreme tidal event in 1924 whereas the Mornington District Surface Water & Flood Protection Scheme Final Preliminary Report (2004) has reported this anecdotal event in 192214.)

December 1954 Navan, Julianstown, Minnistown, Piltown and Drogheda were affected by flooding. Intense flooding on the Nanny River washed away the bridge on the Drogheda Road.

November 1965 Flooding on the River Boyne at Trim. Photographs show flooding of roads and residential properties.

December 1978 Widespread flooding occurred throughout the country. An Irish Times article notes that Meath was among the counties worst affected. Guests were evacuated from the El Molino hotel at Julianstown; the hotel’s ground flood was flooded by over one foot of water from the adjoining River Nanny.

The Evening Press (Dublin) reported that homes were evacuated and factories ‘scrambled to save their stock’ in Navan as flood waters from the Rivers Blackwater and Boyne left some parts of the town with floods of ‘up to seven feet.’ People were evacuated from homes on Boyne Road; traffic was diverted on the Dublin Road; Academy Street was impassable and at Mill Lane, water from the Blackwater flowed through some premises. Clonsilla village also suffered from flooding.

A report by the OPW Hydrometric Section on the flooding in the Boyne catchment estimated the return period to be 5 years on the River Boyne at Navan (drained catchment), 20 years on the River Blackwater at Liscarton (undrained catchment) and 50 years on the River Boyne at Slane (undrained catchment).

December 1981 Laytown was affected by flooding.

August 1986 (Hurricane Charlie). The OPW National overview of flooding on 5-6 August 1986 notes that on the Nanny River catchment there was extensive flooding north of Ashbourne on the Hurley River tributary and the stretch of the main river between Duleek and Julianstown ‘was a vast lake with many farms and roads under water.’ A large new housing estated in the village of Duleek adjacent to the main Dublin-Drogheda Road via Ashbourne was reported to have flooded to a depth of 1.0m when the Nanny ‘burst its banks and overflowed through low lying areas’. The main road at this point was flooded to a depth of 0.3m for some hours.

In the Broadmeadow catchment, the OPW report states, ‘some flooding of tributaries in the Ratoath area of Co. Meath was aggravated by unavoidable delays in carrying out overdue channel maintenance. Otherwise, the catchment performed adequately although serious damage of the river banks and the protection works in the vicinity of weirs and bridges is reported.’

Extensive and severe flooding of the lands upstream of Clonee and Dunboyne was reported in the Tolka catchment, with many roads in the area flooded.

14 Fingal East Meath Flood Risk Assessment and Management Study Hydrology Report, (Halcrow Barry, January 2010)

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Date of Flood Description

February 1990 Photographs show flooding of the River Boyne at Navan, Broadboyne Bridge and Slane.

October 1993 Photograph shows flooding at Dromconrath. The Duleek Flood Study Report (Nicholas O’Dwyer, 1996) describes the flooding at Duleek caused by the Nanny and Parmadden rivers, and notes that flooding of the Millrace Estate in Duleek was contributed to by surcharging of the drainage network. Flood extents are provided for the River Nanny at Duleek.

November 2000 Widespread flooding caused problems nationwide, with the east coast bearing the brunt of the storm. The Evening Herald reported that flooding in Dunboyne was so severe that residents were standing by to be evacuated. The N4 route was closed between Enfield and Maynooth and the N2 between Slane and Ashbourne was also closed due to flooding.

The Drogheda Independent reported that the River Nanny overflowed its banks at Julianstown, flooding the Old Mill Hotel to a depth of nearly 4 feet. Some 30 properties were reported to be flooded on the coast road between Laytown, Bettystown and Mornington. Several schools in East Meath were forced to close due to flooding including Laytown, Donacarney, Julianstown, Stackallen, Kenstown and Cushinstown. Meath County Council’s Emergency Plan was brought into action. Duleek was flooded from the River Nanny, but the Millrace housing estate was reported to survive the flooding as ‘defence work carried out three years ago worked magnificently.’

Photographs show flooding of the River Tolka at Dunboyne and Batterstown; the Skane at Dowdstown and Dunshaughlin, and the Boyne at Navan and Trim,

February 2002 A report on the flood event prepared by Meath County Council stated that the East Coast experienced extreme high tide conditions. 22-25 houses were reported to be flooded in the Bettystown and Mornington areas.

The tidal event which occurred along the East Coast of Ireland on 1 February 2002 was reported as being the highest since records began in 1924 and was 1m above the tide tables predicted value.

November 2002 Photographs show flooding of the River Tolka at Dunboyne; the River Boyne at Trim, Navan, Bective, Bellinter, Broadboyne and Blackcastle, and the River Blackwater at Navan.

The Broadmeadow and Skane catchments were also affected; EPA reports provide assessments of hydrometric data for these catchments from the event.

Flood Extents for the River Tolka are available for this flood event. The River Tolka Flood Study (RPS MCOS, 2003) was prepared as an extension of the Greater Dublin Strategic Drainage Study (GDSDS). The study includes analysis of the November 2002 event. A flood alleviation scheme for the River Tolka was designed as part of the study.

January 2005 Photographs show flooding of the Rye Water in the Newtown area of Kilcock.

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Date of Flood Description

August 2008 Photographs show flooding at Drumconrath on 6 August 2008. Photographs also show flooding of the Brundlestown area, Trim, Slane, Cannistown, Dowdstown, Navan, Bellinter, Tullaghanstown, Cloycavan, Bloomsbury Bridge, Kilcock, Meath Hill, Summerhill and Kells from 16-20 August.

November 2009 Photographs show flooding of Dee tributary at Nobber, River Blackwater at Kells, Moynalty River at Moynalty, River Nanny at Follistown and Balrath to Duleek.

October 2011 On October 24th 2011 a severe rainfall event triggered flooding that affected parts of eastern Ireland, Greater Dublin was particularly badly affected. In Meath, the heavy rains caused numerous but minor flooding events at various locations throughout the Kells Electoral area. None of these events warranted road closures or significant intervention. The sole exception to this was the flooding event in Drumcondra, four private houses and a community hall were flooded as a result.

Table 4‑4 Significant Flood Events in County Meath15

4.9.1 Drainage Districts and reduction related measures such as approval Benefitting Lands procedures for bridges and weirs and iterates reporting requirements for Drainage Districts. Drainage districts and benefitting land maps are a useful tool to highlight areas where The Arterial Drainage Act was originally maintenance or drainage works are undertaken established to deal with land drainage issues or have been required in the past. and by definition focused on agricultural land in rural areas. In 1995, in response to serious Several hundred minor drainage improvement urban flooding the Act was amended to allow schemes, on localised stretches of river, for the provision of flood relief schemes in were first established under the 1842 Arterial urban areas. Drainage Act. Some of these schemes were then subsumed into Arterial Drainage Schemes Benefitting land maps were prepared to under the 1945 Arterial Drainage Act, but identify areas that would benefit from land circa 172 schemes remain standalone and are drainage schemes and typically indicate known as Drainage Districts (DD). Maintenance low-lying land adjacent to rivers and streams. responsibilities, for these drainage districts, Drainage district maps, similar to the Benefiting remains with the local authorities and the OPW Land Maps, were prepared with respect to conduct a policing role. the Land Commission Embankments and Drainage District Works that pre-dated the The 1945 Act considers drainage improvement Arterial Drainage Schemes that commenced based on the whole river catchment rather in 1945. than the piecemeal approach that had been adopted previously. The Act set up the process The following lists the drainage districts that of Arterial Drainage Schemes and provides exist in County Meath and the areas identified for the maintenance of these works. It also as benefitting lands. implements a number of drainage and flood

15 Source: OPW www.floodmaps.ie, FEM FRAMS

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Drainage Districts Benefitting Lands

Lough Crew DD Boyne

Owenroe & Moynalty DD Broadmeadow & Ward

Ward DD Duleek (Nanny)

Curragha DD Glyde & Dee

Garristown & Devlin DD Inny

Nanny DD Ring Ryewater

Kilcock DD Ryewater

Nanny Upper DD Ballycowan DD

Hurley River DD

4.10 Walkover Survey

A walkover survey, along with consultation mapping, and no other detailed data, was with local authority personnel was carried available. Information collated on the site visits out at a number of selected locations to help was used to inform the Flood Zone mapping assess flood risk. In particular, the sites visited process. were settlements where only broadscale flood

5. SOURCES OF FLOODING

This SFRA has reviewed flood risk from fluvial, for this decision. Firstly, the review of pluvial and groundwater sources. It also historical floods shows rivers to be the most considers flooding from drainage systems, common and most damaging. Secondly, Flood reservoirs and canals and other artificial or man- Zones in the Planning System and Flood Risk made systems. The study has also considered Management guidelines are defined on the residual risk associated with various flood basis of fluvial, and where appropriate, tidal alleviation scheme throughout the county, flood risk. In addition, the SFRA should be although it is important to note that flood risk is based on readily derivable information, and assessed based on undefended scenarios (see records and indicators for fluvial flood risk are definitions in Chapter 3). generally more abundant than for other sources of flooding. The focus of the study is on risk from fluvial and tidal flooding. There are two main reasons

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5.1 Fluvial Flooding

Flooding of watercourses is associated with the capacity creating pinch points within the exceedance of channel capacity during higher floodplain. These structures are also vulnerable flows. The process of flooding on watercourses to blockage by natural debris within the channel depends on a number of characteristics or by fly tipping and waste. associated with the catchment including; geographical location and variation in rainfall, Rivers are the primary cause of flooding in steepness of the channel and surrounding Meath; historically, some 60% of events are floodplain and infiltration and rate of runoff attributed to fluvial sources ranging from associated with urban and rural catchments. the major rivers, such as the Boyne, Nanny Generally there are two main types of and the Tolka, to the smaller tributaries and catchments; large and relatively flat or small watercourses. and steep, the two giving two very different responses during large rainfall events. Fluvial flood risk has primarily been identified through interpretation of Flood Zones A and B In a large, relatively flat catchment, flood levels based on the best available data, as detailed will rise slowly and natural floodplains may in the previous Chapter. This includes detailed remain flooded for several days, acting as the modelling from the FEM FRAMS and other local natural regulator of the flow. In small, steep studies, broadscale modelling from the PFRA catchments, local intense rainfall can result study and JBA’s in-house modelling, historic in the rapid onset of deep and fast-flowing data, site walkover and consultation with the flooding with little warning. Such “flash” Local Authority. flooding, which may only last a few hours, can cause considerable damage and possible threat Flood risk to specific settlements is discussed to life. in Chapter 10 and identifies settlements that will benefit from a more detailed flood risk The form of the floodplain, either natural assessment at a local area development plan or urbanised, can influence flooding along stage. Outside of the zoned settlements there watercourses. The location of buildings and is the potential for developments which must roads can significantly influence flood depths also be allocated according to the principles and velocities by altering flow directions and of the Planning System and Flood Risk reducing the volume of storage within the Management guidelines, it is recommended floodplain. Critical structures such as bridges that all development should be screened for and culverts can also significantly reduce flood risk.

5.2 Coastal / Estuarial Flooding

Coastal flooding is caused by higher sea levels (the highest surges can develop from than normal, largely as a result of storm surges, hurricanes); and resulting in the sea overflowing onto the land. LL Wave action, which is dependent on wind Coastal flooding is influenced by the following speed and direction, local topography and three factors, which often work in combination: exposure.

LL High tide level Estuarial flooding may occur due to a LL Storm surges caused by low barometric combination of tidal and fluvial flood pressure exacerbated by high winds mechanisms, i.e. interaction between rivers and

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the sea, with tide levels being dominant in most 5% of the flood events recorded in County cases. A combination of high flow in rivers Meath have been attributed to coastal/ and a high tide will prevent water flowing out estuarine flooding. The coastal settlements to sea, causing increase in water levels inland, of Mornington, Bettystown and Laytown have which may flood over river banks. historically all been susceptible to coastal/ estuarine flooding. Coastal erosion of the foreshore and the shoreline is intimately linked with coastal Coastal flood risk has primarily been identified flooding. The loss of natural coastal defences, through interrogation of the modelled extents such as sand due to erosion (or mechanical of Flood Zones A and B provided by the removal of sand) can increase the risk of FEMFRAM Study, which in turn incorporated flooding in coastal areas. The Planning data from the Irish Coastal Protection Strategy Guidelines state that coastal erosion should Study (ICPSS). therefore be considered in coastal areas within the planning process.

5.3 Pluvial Flooding

Flooding of land from surface water runoff is LL Are there zoned lands which may need to usually caused by intense rainfall that may only accommodate and retain surface water last a few hours. The resulting water follows flow routes? natural valley lines, creating flow paths along LL Are there zoned lands which might roads and through and around developments discharge upstream of an area vulnerable and ponding in low spots, which often coincide to surface water flooding? with fluvial floodplains in low lying areas. Any areas at risk from fluvial flooding will almost Whilst the potential for surface water flow certainly be at risk from surface water flooding. paths or ponding should not necessarily impede or restrict development, applications in such The PFRA study considered pluvial flood risk areas need to consider drainage thoroughly and produced a national set of pluvial flood to ensure risks do not increase in the future. maps. The PFRA flood maps, including pluvial Any development proposals must not impact source flooding, are available for viewing online negatively on flood risk elsewhere. A detailed at the following link http://www.cfram.ie/pfra/ drainage assessment should be undertaken interactive-mapping. for specific applications. Using the available datasets a preliminary assessment of the SFRAs require a strategic assessment of the potential for specific zoned lands to contribute, likelihood of surface water flooding for which or be vulnerable to surface water flooding, overland routing is suitable and appropriate. should be undertaken based on local ground This includes consideration of the following: topography on a site by site basis.

5.4 Groundwater Flooding

Groundwater flooding is caused by the The occurrence of groundwater flooding is emergence of water originating from usually very local and unlike flooding from underground, and is particularly common in rivers and the sea, does not generally pose karstic landscapes. This can emerge from a significant risk to life due to the slow rate either point or diffuse locations. at which the water level rises. However,

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groundwater flooding can cause significant The groundwater vulnerability maps, by GSI, are damage to property, especial in urban areas a useful dataset to consider when assessing and pose further risks to the environment and the potential for groundwater flooding (see ground stability. Chapter 1).

Groundwater flooding can persist over a As part of the EU Floods Directive, the national number of weeks and poses a significant but PFRA study, considered groundwater flooding localised issue that has attracted an increasing and produced a suite of maps. Based on the amount of public concern in recent years. In draft results of that study groundwater is not most cases groundwater flooding cannot be considered a risk in County Meath. easily managed or lasting solutions engineered, although the impact on buildings can be mitigated through various measures.

5.5 Flooding from Drainage Systems

Flooding from artificial drainage systems occurs same flow paths and ponding in the same areas when flow entering a system, such as an urban as overland flow. storm water drainage system, exceeds its discharge capacity, it becomes blocked or it Foul sewers and surface water drainage cannot discharge due to a high water level in systems are spread extensively across the the receiving watercourse. urban areas with various interconnected systems discharging to treatment works and Flooding in urban areas can also be attributed to into local watercourses. sewers. Sewers have a finite capacity which, during certain load conditions, will be exceeded. There are limited records of flooding from In addition, design standards vary and changes drainage systems in Meath; the Duleek Flood within the catchment areas draining to the Study Report (Nicholas O’Dwyer, 1996), refers to system, in particular planned growth and urban surcharging of the drainage network contributing creep, will reduce the level of service provided to flooding of the Millrace Estate (Duleek) during by the asset. Sewer flooding problems will the October 1993 flood event. It is likely that often be associated with regularly occurring similar incidents occur throughout the county. storm events during which sewers and associated infrastructure can become blocked Whilst information on such incidents can give or fail. This problem is exacerbated in areas an idea of those areas with limited drainage with under-capacity systems. In the larger capacity, it is only a record of the hydraulic events that are less frequent but have a higher inadequacies of the sewer systems, not consequence, surface water will exceed the properties at risk of flooding. Therefore it has capacity of the sewer system and flow across limiting usefulness in predicting future flooding. the surface of the land, often following the

5.6 Flooding from Reservoirs and other Artificial Sources

Reservoirs can be a major source of flood probability of dam failure or breach occurring is risk, as demonstrated in the 2009 flooding, very small, the consequences of such an event when waters from the Inniscarra dam flooded can be devastating thereby presenting a risk of significant sections of Cork. Whilst the flooding which has to be considered. However,

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Meath does not have any large reservoirs or The Royal Canal was reopened to navigation artificial detention basins, removing the risk of in recent months, having previously fallen flooding due to breach. into disrepair. The Waterways Ireland Water Controller for the canal reported that for most The Royal Canal connects the River Liffey in of its length, the channel is contiguous with Dublin with the River Shannon at Clondra in the surrounding floodplain. There is an area of County Longford, and passes through Kilcock embanked channel at Longwood in south-west and Enfield in the south-west of County Meath. County Meath, with embankments on both The total length of the main navigation is banks. At this location the canal runs some 146km; approximately 17km of this length is distance outside the development boundary, so through Meath. The Canal is currently under it is unlikely that any zoned lands would be put at the control of Waterways Ireland. risk in the event of a canal breach. There are no records of flooding associated with this stretch Water levels in the canal are controlled by locks, of the canal. The Water Controller is responsible with water eventually discharging into the River for controlling water levels on the canal and Liffey in Dublin. inspecting the embankments on a weekly basis.

6. FLOOD RISK MANAGEMENT ASSETS

The condition of existing flood management within these areas must be assessed with assets is an important consideration for respect to the adequacy of the defences. local authority planners when allocating new development. The Planning System and Should defended areas be identified, the con- Flood Risk Management guidelines considers sideration of residual risk, i.e. the likelihood of that defended areas (i.e. those areas that are flooding occurring as a result of breach or over- protected to some degree against flooding by topping, forms an important element of the SFRA. the presence of a formalised flood defence) are still at risk of flooding due to the risk of Flood defences have been identified at the overtopping or breach, and therefore sites following locations in County Meath:

River/Location Defence

Tolka River and Castle Stream, Road bridge replacement and repairs, railway bridge Dunboyne Clonee underpinning, stream upgrade, embankments and walls, general channel maintenance.

Broadmeadow River, Ratoath Raised flood embankments on both banks. These defences are associated with the Somerville housing development and are considered informal.

Broadmeadow Tributary at Informal defences along both banks of tributary, consisting Ashbourne of masonry walls which form part of houses and garden/park walls.

River Nanny at Duleek Earth embankments and walls have been constructed in the left bank floodplain, alongside Abbeylands and Mill Race housing developments.

Parmadden Tributary at Duleek Defences on both banks, consisting of earth embankments and concrete walls.

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River/Location Defence

Meath Coastline 10.5km of coastal defence assets along the Meath Coastline.

Mornington River, Bettystown Flood defence embankments and flap valves as a barrier to incoming tide.

Mornington East Flood defences to protect the urban area.

Table 6‑1 Flood Risk Management Assets in Meath

It should be noted that in addition to the existing Flood Risk Assessment has recommended a schemes mentioned above there may be other mitigation scheme that will be constructed in flood defence assets that are not listed. 2012. In Kilcock a scheme has been approved by OPW, Kildare County Council and Meath There are also two pending schemes in County Council, it is now under the planning Navan and Kilcock. In Navan the Swan River process.

7. FLOOD ZONE MAPPING

As discussed in Chapter 1, various sources of alphabetical order), indicates the source of data are available and were used to compile a modelled data available within each settlement countywide flood map, indicating Flood Zones development boundary, indicates where a site A and B. Data of the highest confidence was walkover was carried out and comments on used as first preference, moderate next and the data used to define the Flood Zones for the low where no other data was available. Table purposes of this SFRA. 7‑1 lists the settlements in County Meath (in

LOCATION FEM OTHER CFRAM PFRA JFLOW SITE COMMENT ON SFRA FLOOD FRAMS MODEL VISIT ZONE MAPPING

Ashbourne Y Y Y FEM FRAMS outlines used with additional watercourse modelled under PFRA included

Athboy Y Y Y Verified PFRA from E CFRAM FRR

Ballivor Y Y Y Y Based on site walkover PFRA and JFLOW flood outlines modified

Bettystown Y Y Y FEM FRAMS outlines used with additional watercourse modelled under PFRA included

Carlanstown Y Y Y Based on site walkover PFRA outlines used in mapping

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LOCATION FEM OTHER CFRAM PFRA JFLOW SITE COMMENT ON SFRA FLOOD FRAMS MODEL VISIT ZONE MAPPING

Carnaross Not at fluvial flood risk

Clonard Y Y Y Based on site walkover, JFLOW outline modified and used in mapping

Crossakeel Not at fluvial flood risk

Donacarney Not at fluvial flood risk

Donore Not at fluvial flood risk

Drogheda Y Y Y Based on site walkover, South JFLOW outline modified and used with PFRA for additional coverage

Drumconrath Y Y Y Based on previous flood history, JFLOW extended and used in mapping

Duleek Y Y Y FEM FRAMS outlines used with additional watercourse modelled under PFRA included

Dunboyne Y Y Y Tolka River Flood Study Clonee Pace predictive modelled extents used in mapping with PFRA and JFLOW to fill gaps

Dunshaughlin Y Y Y FEM FRAMS

Enfield Not at fluvial flood risk

Gibbstown Y Less than 1km2 of JLFOW outlines within development boundary

Gormanston Y Y Y FEM FRAMS

Julianstown Y Y Y FEM FRAMS outlines used with additional watercourse modelled under PFRA included

Kells Y Y Y Y Based on Kells Stormwater Drainage Study and the application of additional LiDAR data and JFLOW modelling, PFRA used for River Blackwater

Kentstown Y Y Y FEM FRAMS

Kilbride Y Y Y Verified PFRA from E CFRAM FRR

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LOCATION FEM OTHER CFRAM PFRA JFLOW SITE COMMENT ON SFRA FLOOD FRAMS MODEL VISIT ZONE MAPPING

Kilcock Y Y Y Kilcock FRA model extents used in mapping

Kildalkey Y Y Y Verified PFRA from E CFRAM FRR

Kilmainham- Y Y Y Verified PFRA from NB wood CFRAM FRR

Kilmessan Y Y Y Based on E CFRAM FRR, modified JFLOW outline and PFRA used in mapping

Laytown Y Y Y FEM FRAMS

Longwood Y Y Y Y Following site walkover and E CFRAM FRR recommendations, modified PFRA used in mapping

Maynooth Y Y Y Following site walkover, Environs PFRA outlines used in mapping

Mornington Y Y Y Based on site walkover, JFLOW modified and used in mapping

Mornington Y Y Y Y Mornington East Flood East Alleviation Study and FEM FRAMS results used in mapping

Moynalty Y Y Y Based on site walkover, JFLOW modified and used in mapping

Navan Y Y Y Verified PFRA from E CFRAM FRR plus Swan River FRA

Nobber Y Y Y Based on site walkover, JFLOW outlines used in mapping with additional PFRA watercourses included

Oldcastle Not at fluvial flood risk

Rathcairn Not at fluvial flood risk

Rathmolyon Not at fluvial flood risk

Ratoath Y Y Y FEM FRAMS outlines used with additional watercourse modelled under PFRA included

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LOCATION FEM OTHER CFRAM PFRA JFLOW SITE COMMENT ON SFRA FLOOD FRAMS MODEL VISIT ZONE MAPPING

Slane Y Y Y Verified PFRA from E CFRAM FRR

Stamullen Y Y Y FEM FRAMS

Summerhill Y Based on site walkover, not at fluvial flood risk.

Trim Y Y Y Verified PFRA from E CFRAM FRR

Table 7‑1 Model Data used in the Preparation of SFRA Flood Zone Maps

FEM FRAMS data is of the highest quality and were considered and unless otherwise stated this data takes precedence over other modelled the PFRA output, verified at these settlements, data. A number of settlements in County was adopted in the preparation of the SFRA Meath, were subject to a flood risk review Flood Zones. under the initial stages of the National CFRAM studies, which considered the accuracy of the Site visits were conducted to verify flood draft flood outlines produced as part of the mapping within settlements where additional National PFRA study. The findings of this FRR clarification was required.

7.1 National Broadscale Flood Mapping; PFRA and JFLOW

This section, details the methodology behind with detailed modelling from the FEM FRAMS the available National broadscale mapping, and other local studies, although for smaller PFRA and JFLOW, highlighting the limitations watercourses JFLOW® is more conservative. of each approach. In general, a review of An advantage of the PFRA, is that the model JFLOW® flood extents in comparison to covers rivers with catchments greater than PFRA has shown that JFLOW®, due to the 1km2 (10km2 and 3km2 for JFLOW®; see methodology applied, tends to show a more Chapter 1). realistic route of flooding and compares well

8. FLOODING IMPACTS

Flood impacts may be direct or indirect, sections, the impacts of flooding to people, immediate or long term and may affect property, infrastructure and the environment households and communities, individuals is discussed, and assessed in the context of as well as the environment, infrastructure County Meath. and economy of an area. In the following

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8.1 Flooding Impacts on People

Flooding has a wide range of social impacts proximity to the source of the threat or the which may be difficult to delineate as they physical nature of the flooding. Social factors are interconnected, cumulative and often not also play a significant role in determining risk. quantifiable. Although people may experience the same flood, in the same area, at the same time, their In small urban or steep upland catchments levels of suffering are likely to differ greatly which have a very rapid response to rainfall, as a result of basic social differences. These or with flooding due to infrastructure failure, differences will affect vulnerability in a variety flood waters can rise very quickly and put life of ways, including an individual or community’s at risk. Even shallow water flowing at 2m/s response to risk communication (flood warning) can knock children and many adults off their and physical and psychological recovery in feet and vehicles can be moved by water of the aftermath of a flood. How individuals and 300mm depth. The risks rise if the flood water communities experience the impact will also is carrying debris. vary depending on their awareness of the risk of flooding, preparedness for the flood event The impact on people as a result of the stress and the existence or lack of coping strategies. and trauma of being flooded, or even of being under the threat of flooding, can be immense. Impacts of flooding on people are difficult Long-term impacts can arise due to chronic to measure and quantify. There is currently illnesses and stress. Flood water contaminated no spatially referenced dataset of social by sewage or other pollutants (e.g. chemicals vulnerability, although, in time, the census could stored in garages or commercial properties) be adapted into the format of the Social Flood is particularly likely to cause such illnesses, Vulnerability Index, as used in the UK16. either directly as a result of contact with the polluted flood water or indirectly as a result of For the purposes of this SFRA, the impacts of sediments left behind. flooding on people must be inferred from the number of properties at risk of flooding. The degree to which populations are at risk from flooding is not solely dependent upon

8.2 Flooding Impacts on Property and Infrastructure

Flooding can cause severe property damage. The damage flooding can cause to businesses Flood water is likely to damage internal finishes, and infrastructure, such as transport or utilities contents, electrical and other services and like electricity and water supply, can have possibly cause structural damage. The physical significant detrimental impacts on local and effects can have significant long-term impacts, regional economies. The long term closure of with re-occupation sometimes not possible businesses, for example, can lead to job losses for over a year. The costs of flooding are and other economic impacts. increasing, partly due to increasing amounts of electrical and other sophisticated equipment The vulnerability of buildings is important to within developments. understand in terms of their occupants and their

16 Office of Public Works (2008) Flood Risk Assessment Indicators, Methods and Datasets – Scoping Study, Final Report.

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type. For example, it is much more difficult Flood Zone A or B (refer to Section 3.3 for Flood to evacuate the old and ill from hospitals and Zone definition), it should be noted that, as care homes than people working in offices or specified under The Planning System and Flood industrial areas. Building types that need to Risk Management – Guidelines for Planning be operational during and post flood, such as Authorities (OPW/DoEHLG, 2009), flood risk in ambulance stations and emergency response Zone A and B is considered irrespective of the centres are also vulnerable as if the services impact of any flood mitigation schemes. Never they provide are disrupted by flooding it will the less, this is a relatively low level of existing place the immediate community at greater risk. risk to urban areas. The breakdown of property type by Flood Zone is shown in Table 8-1. In Meath, 3.9% of all properties recorded in the An Post Geodirectory are located within

No. (and % of Total Properties*) Property Type in Flood Zones A and B

Residential 2279 (3.4%)

Commercial 189 (0.28%)

Both 195 (0.28%)

Total 2663 (3.9%)

*% of total properties is % of the total number of all properties in County Meath

Table 8‑1 Properties in Flood Zones A and B

Transport and strategic utilities infrastructure flooding beyond the immediate community and can be particularly vulnerable to flooding reinforces why decisions to locate development because interruption of their function can have in floodplain should be taken very carefully. widespread effects well beyond the area of flooding. For example, flooding of primary Placing new development or regenerating in roads or railways can deny access to areas for flood risk areas has additional short and long the duration of the flooding, as well as causing term costs. The need to build resistant and damage to the road or railway. Flooding of resilient properties could significantly increase water distribution infrastructure, such as overall costs of development, whilst ongoing pumping stations, or of electricity sub-stations maintenance and insurance increase future can result in loss of water or power over expenditure. large areas. This can magnify the impact of

8.3 Flooding Impacts on the Environment

Environmental impacts can be significant and habitats. Many wetland habitats are dependent include soil erosion, bank erosion, land sliding on annual flooding for their sustainability and and damage to vegetation as well as the can contribute to the storing of flood waters impacts on water quality, habitats and flora and to reduce flood risk elsewhere. It is important fauna caused by bacteria and other pollutants to recognise the value of maintenance or carried by floodwater. restoration of natural riparian zones such as grasslands which protect the soils from erosion Flooding can have a beneficial role in natural and ‘natural’ meadows which can tolerate flood

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inundation. The use of Green Infrastructure components of the habitats. These are the throughout the river centre can also play a vital Moneybeg and Clareisland Bogs, River Boyne role in enhancing the river environment as well and River Blackwater, Boyne Coast and Estuary, as safeguarding land from future development, and the Rye Water Valley/Carton. protecting people and buildings from flooding and reducing flood risk downstream. All four SPAs are within modelled or potential Flood Zones A and B; again, these have been A natural floodplain can help accommodate designated for the water based components climate change and improve the quality of rivers of the habitats. The SPAs are Lough Sheelin, and associated wetlands to help achieve ‘good Boyne Estuary and River Nanny Estuary and status’ by 2015 under the Water Framework Shore. Directive. Meeting WFD objectives involves not only ecosystems, water quality, drought None of the NHAs lie within Flood Zones A or and flood impact considerations but also the B; however, sixteen of the pNHA sites do lie physical characteristics and morphology of within these zones. the river channel, floodplain and associated structures. Development in the designated sites will be constrained by the SAC and SPA objectives, In Meath, of the eight designated SACs, four but would also be required to pass the lie wholly or partly within Flood Zone A and B, Justification Test if proposed in the vicinity of and have been designated for the water based the watercourses.

8.4 Climate Change

The Planning System and Flood Risk Scenarios, published in 2000. The scenarios Management guidelines recommends that a explore different demographic, economic and precautionary approach to climate change is technological forces and resultant greenhouse adopted due to the level of uncertainty involved gas emissions.) in the potential effects. A significant amount of research into climate change has been More specific advice on the expected impacts undertaken on both a national and international of climate change and the allowances to be front. This section will briefly examine some of provided for future flood risk management in the key findings of the research to date. Ireland is given in the OPW draft guidance.18 Two climate change scenarios are considered. The Intergovernmental Panel on Climate These are the Mid-Range Future Scenario Change (IPCC) was established in 1988 and its (MRFS) and the High-End Future Scenario first report in 1990 justified concern about the (HEFS). The MRFS is intended to represent effects of climate change on a scientific basis. a “likely” future scenario based on the wide The more recent IPCC Fourth Assessment range of future predictions available. The HEFS Report 200717 concludes that climate change represents a more “extreme” future scenario is unequivocal. It projects a global average at the upper boundaries of future projections. sea level rise of between 0.18m and 0.59m Based on these two scenarios the OPW for different SRES emissions scenarios, recommended allowances for climate change up to the end of the century. (SRES refers are given in Table 8-2 over page. to the IPCC Special Report on Emissions

17 Inter-Governmental Panel on Climate Change (IPCC), 4th assessment report. “Climate Change 2007”. 18 OPW Assessment of Potential Future Scenarios, Flood Risk Management Draft Guidance, 2009.

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Criteria MRFS HEFS

Extreme Rainfall Depths +20% +30%

Flood Flows +20% +30%

Mean Sea Level Rise +500mm +1000mm

Land Movement -0.5mm / year* -0.5mm / year*

No General Allowance - No General Allowance - Urbanisation Review on Case by Case Basis Review on Case by Case Basis

-1/3 Tp** Forestation -1/6 Tp** +10% SPR***

Notes: * Applicable to the southern part of the country only (Dublin - Galway and south of this) ** Reduce the time to peak (Tp) by a third; this allows for potential accelerated runoff that may arise as a result of drainage of afforested land *** Add 10% to the Standard Percentage Runoff (SPR) rate; this allows for increased runoff rates that may arise following felling of forestry

Table 8‑2 Allowances for Future Scenarios (100 Year Time Horizon)

8.4.1 Climate Change and Flood Risk years due to increased rainfall, river flows and Assessment sea levels. As recommended by the planning guidelines, a precautionary approach should be The Flood Zones are determined based on adopted. readily available information and their purpose is to be used as a tool to avoid inappropriate Climate change may result in increased flood development in areas of flood risk. Where extents and therefore caution should be taken development is proposed, within an area of when zoning lands in transitional areas. In potential flood risk (Flood Zone A or B), a general, Flood Zone B, which represents the flood risk assessment of appropriate scale will 0.1% AEP extent, can be taken as an indication be required and this assessment must take of the extent of the 1% AEP flood event with into account climate change and associated climate change. In steep valleys an increase in impacts. Under the National CFRAM water level will relate to a very small increase programme, the detailed modelling and in extent, however in flatter low-lying basins assessment stage of each study will include a small increase in water level can result in a for climate change effects. For the eastern significant increase in flood extent. area of County Meath, detailed modelling, with consideration of climate change, has been In the design of flood alleviation measures, completed under the FEM FRAMS pilot CFRAM climate change should be taken into account study. and design levels of structures, such as flood walls or embankments, must be sufficient Consideration of climate change is particularly to cope with the effects of climate change important where flood alleviation measures over the lifetime of the structure or where are proposed as the design standard of the circumstances permit, be capable of adaptation. proposal may reduce significantly in future

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9. FLOOD RISK MANAGEMENT

Following the Planning Guidelines, development As discussed in Chapter 1, under the CFRAM should always be located in areas of lowest programme, detailed modelling will be flood risk first, and only when it has been undertaken that will lead to the publication of established that there are no suitable alternative flood hazard maps for a number of settlements options should development (of the lowest that have been identified as an Area for Further vulnerability) proceed. In such instances, Assessment (AFA). The CFRAM will also result consideration of suitable flood risk mitigation in the publication of a Flood Risk Management and management measures is necessary. It Plan that will include management and may be technically feasible to mitigate or mitigation options to deal with flood risk in manage flood risk at site level, however the future. This work has been completed for the potential impacts on the surrounding Fingal East Meath as part of the pilot CFRAM community must also be considered. study, FEM FRAMS.

A strategic approach to the management of flood risk is required to consider the impact of flooding on a catchment wide basis.

9.1 Management of Flood Risk from a Planning Perspective

The Planning Guidelines recommend a for the area must coincide with the overall flood sequential approach. This works well where management strategy. Flood risk management there are no constraints to development and policies must allow a sustainable approach there is an ample source of developable land. In to development without increasing exposure some areas, development may be constrained to flood risk whilst considering the mitigation due to its location adjacent to the river and and management of flood risk to existing natural flood plain. Spatial planning objectives communities.

9.2 Flood Risk Policies and Objectives

The policies and objectives of the planning result in recommended mitigation and authority will include consideration of the management measures, with an expected following: publication date by end 2015. LL The Planning System and Flood Risk Management, Guidelines for Planning 9.2.1 Specific Development Planning Authorities. Applications LL The content of this SFRA; the Flood Zones and their use as a planning tool. The following outlines the key requirements LL The triggers for review of the SFRA as set relating to the management of development in out in Chapter 11. areas at risk of flooding: LL The recommendations of the FEM FRAMS, LL All development at potential risk of flooding which was published in draft format in will require an appropriately detailed flood November 2011. risk assessment. As a minimum this LL The recommendations of the Eastern, will include a “Stage 1 - Identification of Neagh-Bann and Shannon CFRAM studies Food Risk”; where flood risk is identified upon completion. These studies will

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a “Stage 2 - Initial FRA” will be required in accordance with Box 5.1 of the Planning and depending on the scale and nature of Guidelines, The Planning System and Flood the risk a “Stage 3 - Detailed FRA” may be Risk Management. required. LL The planning authority will explore LL All development should have regard to opportunities to include flood alleviation the surface water management policies proposals and upgrades that benefit the in the Greater Dublin Strategic Drainage county and / or local area as a whole, as Study (GDSDS). Compliance with the part of specific development applications. recommendations contained in Technical Guidance Document, Volume 2, Chapter Any proposal that is considered acceptable 4 of the Greater Dublin Strategic Drainage in principle shall demonstrate the use of the Study shall be required in all instances. sequential approach in terms of the site layout LL All development proposals, within or and design and, in satisfying the Justification incorporating areas at moderate to Test, the proposal will demonstrate that high flood risk, that are vulnerable to appropriate mitigation and management flooding will require the application of the measures are put in place. development management justification test

9.3 Flood Management Action Plan

There are various levels of flood management undergo detailed modelling i.e. Areas for plans and these include the overall strategy for Further Assessment (AFA). Under the EU the river catchment, the emergency response Floods Directive, the CFRAM programme is due plan of the local authority and the flood risk for completion by the end of 2015. management plan at a site specific level. FEM FRAMS FRMP – the draft FEM FRAMS Strategic Flood Risk Management Plan - Flood Risk Management Plan was published this will be informed by the detailed in November 2011 for public consultation. assessment of areas at significant flood risk, This plan “identifies viable structural and upon completion of the CFRAM programme. non-structural options for managing the A Strategic Countywide FRMP will pull together flood risks within the study area as a the recommendations from each CFRAM in whole and for localised high-risk areas.” the Eastern, Neagh-Bann and Shannon river The recommendations of this plan will be basin districts, including the FEM FRAMS. The incorporated into the future planning objectives formulation of a management plan is particularly for the relevant areas. important in any areas reliant on protection from flood defences. The management plan Site Specific FRMP - this will be specific to must consider residual risk and an effective the development and associated activities. emergency response should the defences A site specific FRMP, which may include fail due to overtopping or breach. Under the an emergency plan, will be required for any CFRAM programme, flood risk management development proposal that is granted approval options will be explored for all areas that will in an area of flood risk.

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9.4 Policy Relating to Management of Surface Water

Development has the potential to cause an at a minimum be 300mm above adjacent increase in impermeable area and an associated roads and hard standing areas to reduce the increase in surface water runoff rates and consequences of any localised flooding. volumes. This can lead to potential increase in flood risk downstream due to overloading of 9.4.2 Sustainable Drainage Systems existing drainage infrastructure. (SuDS)

Managing surface water discharges from A specific requirement of the EU Water new development is crucial in managing and Framework Directive is that surface water reducing flood risk to other development discharge is controlled and managed so that downstream. The management of surface any impact on its receiving environment is water is an important concern for all mitigated. This can be achieved through the development sites. Compliance with the use of Sustainable Drainage Systems (SuDS). recommendations contained in Technical SuDS can reduce the rate of runoff through Guidance Document, Volume 2, Chapter 4 of a combination of infiltration, storage and the Greater Dublin Strategic Drainage Study conveyance (slowing down the movement of (GDSDS) shall be required in all instances. water). Sustainable drainage can be achieved through the use of green infrastructure such 9.4.1 Overland Flow Routes green roofs and pervious pavements, rainwater harvesting, soakaways, swales and detention Underground drainage systems have a basins, ponds and wetlands. finite capacity and regard should be given to events larger than the design capacity of the The effectiveness of flow management scheme network. This should be considered along with within a single site is heavily limited by the potential surface water flows that may enter a land use and site characteristics including development site from the surrounding area. (but not limited to) topography, geology and Master planning should ensure that existing available area. As such, surface water design flow routes are maintained, through the use and management must be carried out at a site of green infrastructure. Floor levels should specific level for any proposed development.

9.5 Flood Mitigation Measures at Site Design

Any development proposal in an area at that mitigate the damage floodwater causes moderate or high risk of flooding that is to buildings. Alternatively, designs for flood considered acceptable in principle must resilient construction may be adopted where it demonstrate that appropriate mitigation can be demonstrated that entry of floodwater measures can be put in place and that residual into buildings is preferable to limit damage risks can be managed to acceptable levels. caused by floodwater and allow relatively quick recovery. To ensure that adequate measures are put in place to deal with residual risks, proposals Further detail on flood resilience and flood should demonstrate the use of flood-resistant resistance are included in the Technical construction measures that are aimed at Appendices of the Planning Guidelines, The preventing water from entering a building and Planning System and Flood Risk Management.19

19 The Planning System and Flood Risk Management Guidelines for Planning Authorities, Technical Appendices, November 2009

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10. Development zoning and settlement review

10.1 Land Use Zoning Objectives

The purpose of zoning is to indicate to property below. It is important to note that this table is owners and members of the public the types provided as a general guide and the specific of development, which the Planning Authority development types within the zoning objective considers most appropriate in each land use must be considered individually, and with category. reference to Table 3-1 of the Planning System and Flood Risk Management guidelines. For Zoning is designed to reduce conflicting uses example, in planning terms a guest house within areas, to protect resources and, in or hotel is permitted in principle under the association with phasing, to ensure that land ‘Tourism’ zoning, but are considered to be suitable for development is used to the best highly vulnerable to flooding. The vulnerability advantage of the community as a whole. class does not take into account economic damages; for example, high-tech manufacturing The zoning objectives can be related to the would be permitted under the ‘Enterprise and vulnerability classifications in the Planning Employment’ zoning objective and could pass System and Flood Risk Management the Justification Test within Flood Zones A or guidelines; highly vulnerable, less vulnerable B (See Section 3.3 for Flood Zone definition), and water compatible. The vulnerability of but the costs associated with flooding of such the land use, coupled with the Flood Zone a development may point to its preferential in which it lies indicates the appropriateness location within Flood Zone C. of the development and guides the need for application of the Justification Test. Town Development Plans and Local Area Plans will be reviewed following the publication of the A summary of land zoning types and their County Development Plan. respective vulnerabilities are shown in the table

Vulnerability Class Land use and types of development include:

Highly vulnerable development Garda, ambulance and fire stations (including essential infrastructure) Hospitals and schools; Dwelling houses, student halls of residence and hostels. Essential infrastructure, such as primary transport and utilities distribution, including electricity generating power stations and sub-stations, water and sewage treatment, and potential significant sources of pollution in the event of flooding.

Less vulnerable development Buildings used for: retail, leisure, warehousing, commercial, industrial and non-residential institutions; Land and building used for agriculture and forestry; Local transport infrastructure.

Water-compatible development Flood control infrastructure; Amenity open space, outdoor sports and recreation and essential facilities such as changing rooms, Lifeguard and coastguard stations.

Table 10‑1 Summary Classification of Vulnerability

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It is noted that as part of the County Local Area Plan / Development Plan preparation. Development Plan SFRA, individual zonings However, one zoning objective that is included within each settlement have not been within the County Development Plan is the R1 considered in detail under the SFRA. Zoning strategic rail corridor and the appropriateness of objectives will be fully reviewed as part of the this zoning is discussed in Section 10.3.

10.2 Review of Flood Risk at Settlements in County Meath

The following summarises the findings of the each settlement are being reviewed. If flood settlement review. The review considered risk can be avoided, development zoning can potential for future development within the proceed without the need for a SFRA at LAP or development boundary of each settlement Town Plan stage. In the majority of cases, it will based on the extent of flood risk and the not be possible to completely avoid flood risk i.e. availability of development lands. The review historically town centres originate on the banks also considers the development pressure on of major rivers. Mitigation and management of the settlement as indicated by the current land flood risk must be considered to allow continued use zoning maps. development of an area without increasing exposure to flood risk. In some areas this may The full discussion and commentary on flood be a relatively straight forward process that can risk management and its interaction with future use the general polices and recommendation development is provided in Appendix A. of the countywide SFRA. For areas with a significant proportion of zoned land in Flood A consideration of flood risk management is Zone A and B this will require more detailed essential when the land use zoning maps for consideration at LAP or Town Plan stage.

SETTLEMENT CONCLUSION

Ashbourne No SFRA required. Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations

Athboy No SFRA required Implement Flood Risk Management policies from CDP

Ballivor SFRA required at LAP stage

Bettystown SFRA required at LAP stage, taking into account any recommendations of the FEM FRAMS

Carlanstown No SFRA required Implement Flood Risk Management policies from CDP

Carnaross No SFRA required Implement Flood Risk Management policies from CDP

Clonard SFRA required at LAP stage

Crossakeel No SFRA required Implement Flood Risk Management policies from CDP

Donacarney No SFRA required Implement Flood Risk Management policies from CDP

Donore No SFRA required Implement Flood Risk Management policies from CDP

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SETTLEMENT CONCLUSION

Drogheda South Joint SFRA with Louth County Council / Drogheda Borough Council required

Drumconrath SFRA required at LAP stage.

Duleek SFRA required at LAP stage, taking into account any recommendations of the FEM FRAMS

Dunboyne/Clonee/Pace SFRA required at LAP stage.

Dunshaughlin No SFRA required Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations

Enfield No SFRA required Implement Flood Risk Management policies from CDP

Gibstown No SFRA required Implement Flood Risk Management policies from CDP

Gormanston No SFRA required Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations

Julianstown No SFRA required Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations

Kells SFRA required at Development Plan stage.

Kentstown No SFRA required Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations

Kilbride No SFRA required Implement Flood Risk Management policies from CDP

Kilcock Further examination in line with The Planning System and Flood Risk Management – Guidelines for Planning Authorities” (OPW/ DoEHLG, 2009) may be required.

Kildalkey No SFRA required Implement Flood Risk Management policies from CDP

Kilmainham-wood No SFRA required Implement Flood Risk Management policies from CDP

Kilmessan SFRA required at LAP stage.

Laytown No SFRA required Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations

Longwood SFRA required for LAP stage

Maynooth Environs No SFRA required Implement Flood Risk Management policies from CDP

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SETTLEMENT CONCLUSION

Mornington No SFRA required Implement Flood Risk Management policies from CDP

Mornington East SFRA required at LAP stage.

Moynalty No SFRA required Implement Flood Risk Management policies from CDP

Navan SFRA required at Development Plan stage

Nobber SFRA required at LAP stage

Oldcastle No SFRA required Implement Flood Risk Management policies from CDP

Rathcairn No SFRA required Implement Flood Risk Management policies from CDP

Rathmolyon No SFRA required Implement Flood Risk Management policies from CDP

Ratoath No SFRA required Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations

Slane No SFRA required. Implement Flood Risk Management policies from CDP

Stamullen No SFRA required Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations

Summerhill No SFRA required. Implement Flood Risk Management policies from CDP

Trim SFRA required at Development Plan stage

Table 10‑2 Summary Results from the Settlement Review

10.3 Strategic Rail Corridor

The protection of the designated route of the would compromise its future delivery. In extension of the Clonsilla to Parkway rail line applying the Planning System and Flood Risk to Navan is catered for by zoning objective Management Guidelines the new rail link R1 “To provide for a strategic rail corridor and has been demonstrated to pass parts 1 and associated physical infrastructure.” The R1 2 of the Justification Test for Development zoning is mentioned specifically in this SFRA Plans. Having reviewed the proposed corridor because it stands apart from most other zoning there are no strategic flood risk management objectives within the Development Plan. implications as a result of the designated route, which utilises existing river crossings and as As stated in the Development Plan; the zoning such the development is unlikely to cause has a single purpose use which is to protect unacceptable adverse impacts. the designated route from development which

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11. SFRA review and monitoring

An update to the SFRA will be triggered by the SFRA as availability allows. Not all future the six year review cycle that applies to Local sources of information should trigger an Authority development plans. In addition there immediate full update of the SFRA; however, are a number of other potential triggers for an new information should be collected and kept SFRA review and these are listed in the table alongside the SFRA until it is updated. below. In addition, information on insurance claims There are a number of key outputs from from water related issues, i.e. flooding, could possible future studies and datasets, which be compiled, if available. should be incorporated into any update of

Possible Trigger Source Timescale

Catchment Flood Risk Assessment and Management OPW under the 2013 (CFRAM) Flood Hazard Mapping Floods Directive

Catchment Flood Risk Assessment and Management OPW 2015 (CFRAM) Plan

Flood maps of other sources, such as canal breach and Various Unknown drainage networks

Significant flood events Various Unknown

Changes to Planning and / or Flood Management Policy DoEHLG / OPW Unknown

Detailed FRAs Various Unknown

Flood Defence Feasibility / Design Reports Likely to be local Unknown authority and the OPW

Table 11‑1 SFRA Review Triggers

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Appendix A – Settlement Review

A. 1 Ashbourne 346 A. 2 Athboy 347 A. 3 Ballivor 348 A. 4 Bettystown 349 A. 5 Carlanstown 350 A. 6 Carnaross 351 A. 7 Clonard 352 A. 8 Crossakeel 353 A. 9 Donacarney 354 A. 10 Donore 355 A. 11 Drogheda Southern Environs 356 A. 12 Drumconrath 357 A. 13 Duleek 358 A. 14 Dunboyne Clonee Pace 359 A. 15 Dunshaughlin 360 A. 16 Enfield 361 A. 17 Gibbstown 362 A. 18 Gormanston 363 A. 19 Julianstown 364 A. 20 Kells 365 A. 21 Kentstown 366 A. 22 Kilbride 367 A. 23 Kilcock 368 A. 24 Kildalkey 369 A. 25 Kilmainhamwood 370 A. 26 Kilmessan 371 A. 27 Laytown 372 A. 28 Longwood 373 A. 29 Maynooth Environs 374 A. 30 Mornington 375 A. 31 Mornington East 376 A. 32 Moynalty 377 A. 33 Navan 378 A. 34 Nobber 379 A. 35 Oldcastle 380 A. 36 Rathcairn 381 A. 37 Rathmolyon 382 A. 38 Ratoath 383 A. 39 Slane 384 A. 40 Stamullen 385 A. 41 Summerhill 386 A. 42 Trim 387

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A.1 ASHBOURNE A.1 Ashbourne

SettlementSettlem eAreant Area 585.53 Ha 585.53 Ha ZoningZon withining wit Floodhin Fl oZoneod Z oAn eand/or A and B?/or B? Yes Yes Area for Further Assessment under CFRAM FEM FRAMS Area for Further Assessment under CFRAM programme? FEM FRAMS programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA The ©Flood Ordn Zoneance mappingSurvey Ir ehaslan dbeen & G oproducedvernment inof accordance Ireland, Me awithth 2 0the12 /Planning31/CCMA Guidelines and therefore The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores the ignoresimpa thect o fimpact flood pr oofte cfloodtion st ruprotectionctures. A restructures.as protected Areasby floo dprotected defences sbytill cfloodarry a redefencessidual risk still of f locarryoding a dresidualue to risk of floodingovertopp indueg o rto br eovertoppingach, there ma yor a lsbreach,o be no thereguara ntemaye o falso mai nbeten anonc eguarantee in perpetu itofy. Amaintenancereas that ben inefi t perpetuity.from defenc esAreas that abenefitre annot afromted se pdefencesarately. N oarete thannotatedat Flood Z onseparately.e mapping is Noteonly thatrepro dFlooduced wZoneithin thmappinge settlem isen t onlydev ereproducedlopment within boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 the settlement development boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or year or 0.1% AEP. 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source FEM FRAMS FloodHi sZonetoric amappingl Floodin gdata source FEM BFRAMSroadmeadow Ashbourne Nov 2002 Broadmeadow Ashbourne Aug 1986 Historical Flooding Broadmeadow Ashbourne Nov 2002 Broadmeadow Ashbourne Comment Two watercourses flow through Ashbourne with their Aug 1986 confluence just east of Milltown Bridge. Flood risk in Comment Two watercoursesAshbourne is wflowell d ethroughfined b asAshbourneed on det aiwithled mtheirode confluenceling just eastcarr iofed Milltown out unde Bridge.r FEM F FloodRAMS .risk in Ashbourne is well definedThe basedFlood Zono ndetailedes will n omodelingt hinder fcarrieduture douteve lunderopme nFEMt an d FRAMS.zon i ng for new development in areas of high flood risk can be avoided. Flood risk can be managed by adopting The Floodthe p oZoneslicies willset onotut ihindern the Cfutureounty development Developmen tand Pla nzoning, the for newrec odevelopmentmmendation ins oareasf the ofPla highnnin floodg Guid riskelin ecans a nbed aavoided.ny Flooda riskddit icanona bel m managedanageme nbyt madoptingeasures thespe policiescified b yset th eout FE inM the CountyFR ADevelopmentMS. Plan, the recommendations of the Planning Conclusion GuidelinesNo SF andRA r anyequ iadditionalred. management measures specified by the FEM FRAMS. Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations. Conclusion No SFRA required. Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations.

Appendix 06 SFRA Appendicies.zip 1

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A.2 AthboyA.2 ATHBOY

SettlSettlementement Ar eAreaa 197.9 H197.9a Ha

ZoniZoningng wit withinhin Fl oFloodod Z Zoneone AA aand/ornd/o rB? B? Yes Yes Area for Further Assessment under CFRAM Eastern CFRAM Study Area for Further Assessment under CFRAM programme? Eastern CFRAM Study programme?

The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores © Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA The Ftheloo dimpact Zone mofa floodpping hprotectionas been p rstructures.oduced in a cAreascorda nprotectedce with t hbye Pfloodlannin gdefences Guidelin stilles acarrynd th ae rresidualefore ig risknore sof the impact of flood floodingprotectio ndue str touc tuovertoppingres. Area sor p rbreach,otected there by flo omayd d ealsofen cbees snoti llguarantee carry a re sofid umaintenanceal risk of flo inod inperpetuity.g due to o vAreasertop ping or breacthath, th benefitere may from also bdefencese no gua rarean tannotatedee of main separately.tenance in peNoterpe tthatuity . Flood Area sZone tha t bmappingenefit f riso monly de freproducedences are a nwithinnotat ed separtheate lsettlementy. Note tha developmentt Flood Zone mboundary.apping is Flood only rZoneeprod Au c–e Fluvial:d within 1 t inhe 100 sett yearleme nort 1%dev eAEP,lopm Tidal:ent b o1u innd 200ary. yearFloo dor Z one A – Fluvia0.5%l: 1 in AEP. 100 yFloodear o rZone 1% ABE –P ,1 T inid a1000l: 1 inyear 20 0or y e0.1%ar or AEP.0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. FlooFloodd Zon Zonee m amappingpping d dataata ssourceource EasternEast eCFRAMrn CFR FloodAM F Risklood Review Risk R (PFRA)eview (PFRA)

HistoHistoricalrical Flo Floodingoding MullaghstonesMullaghsto N51nes RecurringN51 Rec (minorurring surface(mino rwater surfa issue)ce water issue) Comment The Athboy River runs through the settlement and Comment The Athboy River runs through the settlement and development development has established on both sides of the river. has established on both sides of the river. Flood risk can be managed by adopting the policies set out Flood risk can be managed by adopting the policies set out in in the County Development Plan and the recommendations the County Development Plan and the recommendations of the Planningof th eGuidelines. Planning Guidelines. As Athiss t ish ians i sArea an forAre Furthera for F Assessmenturther Asse underssme thent uEasternnder t he Eastern CFRAM,CFRA furtherM, fur treviewher re isv irequiredew is re followingquired f othello wpublicationing the p ublication of theof tEasternhe Eas CFRAMtern CF floodRAM fhazardlood hamappingzard m andap psubsequenting and managementsubseque plans.nt management plans.

ConcConclusionlusion No NSFRAo SF requiredRA required ImplementImplem Floodent F Risklood Management Risk Manag policiesement frompoli cCDPies from CDP

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A6 Strategic Flood Risk Assessment for County Meath

A.3 BallivorA.3 BALLIVOR

SettlemeSettlementnt Area Area 101.68 Ha 101.68 Ha

Zoning wZoningithin Fwithinlood FloodZone Zone A an Ad /and/oror B? B? Yes Yes

Area for AreaFurt forhe rFurther Asses Assessmentsment und eunderr CF RCFRAMAM programme?Eastern CFRAEasternM Stud CFRAMy Study programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA © OrdnanThece SFloodurve Zoney Ire mappingland & G hasove beenrnm eproducednt of Ire inla accordancend, Meath with201 2the/3 1Planning/CCMA Guidelines and therefore ignores The Flood theZon impacte mapp ofin gflood has bprotectioneen produ cstructures.ed in acco r dAreasance wprotectedith the P labyn nflooding G udefencesidelines astillnd tcarryhere fao rresiduale ignor erisks th ofe impact of ffloodinglood pro teduecti oton sovertoppingtructures. Aorr ebreach,as pro tthereected bmayy f loalsood dbeef enonc eguarantees still car ryof a maintenanceresidual risk in o f perpetuity.flooding d ueAreas to overtopping or breach, there may also be no guarantee of maintenance in perpetuity. Areas that benefit from defences that benefit from defences are annotated separately. Note that Flood Zone mapping is only reproduced are annotated separately. Note that Flood Zone mapping is only reproduced within the settlement development within the settlement development boundary. Note that Flood Zone mapping is only reproduced within the boundary. Note that Flood Zone mapping is only reproduced within the settlement development boundary. Flood Zone A – Fluvialsettlement: 1 in 100 y developmentear or 1% AE Pboundary., Tidal: 1 iFloodn 200 Zone year Aor – 0 Fluvial:.5% AE 1P .in F100lood year Zon ore B1% –1 AEP,in 10 Tidal:00 ye 1a rin o 200r 0.1 year% A EorP . 0.5% AEP. Flood Zone B –1 in 1000 year or 0.1% AEP. Flood Zone mapping data source Eastern CFRAM Flood Risk Review (PFRA) HistoricaFloodl Floo Zoneding mapping data source NEasterno CFRAM Flood Risk Review (PFRA) CommenHistoricalt Flooding TNowo watercourses flow through Ballivor from the east Comment aTwond nwatercoursesorth, and th flowe Fl othroughod Zon eBallivors wil lfrom rest rtheict eastdev eandlo pnorth,men t thande stheou tFloodh, ea Zonesst an dwill w erestrictst of tdevelopmenthe core. the south, east and Fwesturth eofr therev core.iew o f land use zonings is required at LAP sFurthertage. review of land use zonings is required at LAP stage. AAss aann AreaArea for fo Furtherr Furth Assessmenter Assessm underent u Easternnder E aCFRAM,stern CfurtherFRAM ,review furth eisr required review followingis requi rtheed publicationfollowing ofth thee Eastern pCFRAMublicat ifloodon of hazardthe E amappingstern C andFR AsubsequentM flood h azmanagementard mapp ing aplans.nd subsequent management plans. ConclusiConclusionon SSFRAFRA rrequiredequired at a LAPt LA stageP stage

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Strategic Flood Risk Assessment for County Meath A6

A.4 Bettystown A.4 BETTYSTOWN Settlement Area 313.84 Ha Settlement Area 313.84 Ha Zoning within Flood Zone A and/or B? Yes Zoning within Flood Zone A and/or B? Yes Area for Further Assessment under CFRAM FEM FRAMS prograAreamm fore? Further Assessment under CFRAM programme? FEM FRAMS

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores © Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA the impact of flood protection structures. Areas protected by flood defences still carry a residual risk of The Flofloodingod Zone mdueap ptoin govertopping has been p rorod ubreach,ced in thereaccor damaynce also wit hbe th eno P lguaranteeanning Gu idofe linmaintenancees and ther inef operpetuity.re ignores t hArease impact of flood protection structures. Areas protected by flood defences still carry a residual risk of flooding due to that benefit from defences are annotated separately. Note that Flood Zone mapping is only reproduced within overtopping or breach, there may also be no guarantee of maintenance in perpetuity. Areas that benefit from defences are anntheota tsettlemented separate developmently. Note that boundary.Flood Zone Floodmapp iZoneng is Aon –ly Fluvial: reprod u1c ined 100 wit hyearin th ore s1%ettl eAEP,men tTidal: deve 1lo pinm 200ent year or bounda0.5%ry. Fl oAEP.od Z oFloodne A –Zone Fluv Bia l–: 1 iinn 1100000 y eyearar o ror 1 %0.1% AEP AEP., Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source FEM FRAMS & PFRA Flood Zone mapping data source FEM FRAMS & PFRA HistorHistoricalical Floo dFloodinging MentionedMentione d- Mornington- Morningt Novemberon Novem 2000ber 2and00 0Piltown and P Meathiltown Recurring Meath Recurring CommCommentent FloodFlood risk ris ink iBettystownn Bettysto wis nwell is wdefinedell def iinne thed i nsouthern the so uendthe rofn theen dsettlement of the se asttl ethisme watercoursent as this w wasate rmodelledcourse w underas m othede FEMlled FRAMS. Significant flood risk is identified that will be a constraint under the FEM FRAMS. Significant flood risk is identified to expansion of existing developed areas. that will be a constraint to expansion of existing Itd isev recommendedeloped areas .that flood risk and management options for the settlement are considered in more detail at the Lap stage, and takeIt is into rec accountommen theded recommendations that flood risk a ofn dthe m aFEMnag FRAMSement and anyopt potentialions for overlapthe se twithtlem theent Mornington are consid Floodered Alleviationin more d Study.etail at the Lap stage, and take into account the Conclusion SFRArecom requiredmenda attio LAPns ostage,f the takingFEM F intoRAM accountS and anyany potential recommendationsoverlap with the of M theorn FEMingt oFRAMSn Flood Alleviation Study. Conclusion SFRA required at LAP stage, taking into account any recommendations of the FEM FRAMS 2011s5504 SFRA Live Report (v1.11 December 2012).doc 349

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A6 Strategic Flood Risk Assessment for County Meath

A.5 A.5Carlanstown CARLANSTOWN Settlement Area 62.68 Ha Settlement Area 62.68 Ha Zoning within Flood Zone A and/or B? Yes Zoning within Flood Zone A and/or B? Yes Area for Further Assessment under CFRAM No Areapro forgr aFurthermme? Assessment under CFRAM programme? No

The© Flood Ordn aZonence mappingSurvey I hasrela beennd & producedGovernm inen accordancet of Irelan dwith, Me theath Planning 2012/3 Guidelines1/CCMA and therefore ignores the impact of flood protection structures. Areas protected by flood defences still carry a residual risk of The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores the floodingimpact oduef fl otood overtoppingprotection s torru cbreach,tures. thereAreas pmayrot ealsocte d beby noflo oguaranteed defence sof stimaintenancell carry a res inidu aperpetuity.l risk of fl o oAreasding due to thatov benefitertoppin gfrom or b rdefenceseach, the raree m annotateday also be separately.no guarant e eNote of m thatain teFloodnanc eZone in p ermappingpetuity. is A ronlyeas treproducedhat benefit frowithinm d efences thea rsettlemente annotated development separately. N boundary.ote that F l oFloodod Zo Zonene m aAp p–i nFluvial:g is on l1y inre p100rod uyearced orwi t1%hin tAEP,he s eTidal:ttlem e1n int d 200eve lyearopm eornt 0.5%bou AEP.ndary .Flood Floo dZone Zon eB A – –1 Finlu v1000ial: 1 year in 1 0or0 y0.1%ear o rAEP. 1% AEP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. FloodFlo oZoned Zo mappingne map pdataing sourcedata sourcePFRA PFRA HistoricalHistori cFloodingal Flooding No No CommentComment The Moynalty RiverTh flowse Mo yalongnalty the Ri vsouther flo wwests a loboundaryng the sofo utheth west settlement. boundary of the settlement. The Flood Zones willTh enot Fl ohinderod Zo futurenes w developmentill not hinde andr fu tzoningure for new developmentdev einlo areaspme noft highand floodzonin grisk fo rcan ne bew davoided.evelop ment in Flood risk can be managedareas of byhi gadoptingh flood therisk policies can be set av outoid eind . Flood the County Developmentrisk can Plan be andma ntheag erecommendationsd by adopting t hofe thepo licies set Planning Guidelines.out in the County Development Plan and the Conclusion No SFRA requiredrecommendations of the Planning Guidelines. Conclusion Implement Flood RiskNo S ManagementFRA require dpolicies from CDP Implement Flood Risk Management policies from CDP

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A.6 A.6Carnaross CARNAROSS

SettlementSettlemen tArea Area 29.23 Ha 29.23 Ha

ZoningZonin gwithin withi nFlood Floo dZone Zon eA Aand/or and/ oB?r B? No No Area for Further Assessment under CFRAM No Areaprog forram Furtherme? Assessment under CFRAM programme? No

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA ©T hOrdnancee Flood Zon Surveye mappin Irelandg has be e&n pGovernmentroduced in acc oofrd aIreland,nce with Meaththe Plan n2012/31/CCMAing Guidelines and therefore ignores the impact Theof f lFloodood pr oZonetectio nmapping structure hass. A beenreas p producedrotected by in fl oaccordanceod defences swithtill ca therry a Planning residual r iGuidelinessk of floodin gand due therefore to overtop ignoresping theor bimpactreach, tofhe rfloode may aprotectionlso be no g ustructures.arantee of m aAreasintena nprotectedce in perp ebytu ityflood. Are asdefences that ben estillfit f rocarrym de af enresidualces are riskanno tofa ted floodingseparate lydue. N otote tovertoppinghat Flood Zo neor mbreach,apping isthere only remaypro dalsouced bewi thnoin tguaranteehe settlem enoft dmaintenanceevelopment b oinu nperpetuity.dary. Flood ZoAreasne A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. that benefit from defences are annotated separately. Note that Flood Zone mapping is only reproduced within theFlo settlementod Zone m developmentapping data boundary.source Floodn /Zonea A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or 0.5%Histo AEP.rical FloodFlood iZoneng B – 1 in 1000 year or N0.1%o AEP. Comment No fluvial flood risk identified and no flood history. Flood Zone mapping data source n/a Conclusion No SFRA required Historical Flooding No Implement Flood Risk Management policies from CDP Comment No fluvial flood risk identified and no flood history.

Conclusion No SFRA required Implement Flood Risk Management policies from CDP

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A.7 ClonardA.7 CLONARD

SettlemSettlementent Area Area 63.3 Ha63.3 Ha

ZoningZoning withi nwithin Floo Floodd Zo Zonene A A a and/ornd/or B? B? Yes Yes

Area foArear Fu forrth Furtherer Ass Assessmentessment u undernder CFRAMCFRAM programme? No No programme?

© Ordn©an Ordnancece Surve Surveyy Irela nIrelandd & G o&v Governmenternment of ofIr eIreland,land, MMeatheath 2012/31/CCMA2012/31/CCMA The FlooThed Z oFloodne m Zoneappin mappingg has be hasen p beenrodu cproduceded in ac cino raccordancedance with withthe Pthelan Planningning Gu iGuidelinesdelines an dand th ethereforerefore ig ignoresnores t he impact of flood thepro timpactection ofst rflooductur eprotections. Areas structures.protected bAreasy floo dprotected defenc ebys sfloodtill car rdefencesy a resid stillual rcarryisk o af residualfloodin grisk du eof to overtopping or breacfloodingh, there mdueay toa lsovertoppingo be no gu aorr abreach,ntee o fthere main temayna nalsoce inbe pnoer pguaranteeetuity. A rofe asmaintenance that bene finit fperpetuity.rom defen cAreases ar e annotated separatethatly. Nbenefitote th afromt Flo odefencesd Zone mareap pannotateding is on lseparately.y reprodu c eNoted w ithatthin tFloodhe s eZonettlem emappingnt dev eislo ponlyme reproducednt boundar y.within Flo od Zone A – Fluvialthe: 1 isettlementn 100 yea rdevelopment or 1% AEP, boundary.Tidal: 1 in Flood200 y Zoneear o Ar 0–. Fluvial:5% AE P1. in F 100lood year Zon ore B1% – 1AEP, in 1 Tidal:000 y1e inar 200or 0 year.1% or A EP. Flood Z0.5%one AEP.ma p Floodping Zone dat Ba –s 1o uinr 1000ce year or J0.1%Flow AEP. HistoricFloodal F lZoneoodi nmappingg data source JFlowNo CommeHistoricalnt Flooding No The Kilwarden River and associated Flood Zones restrict Comment Thed Kilwardenevelopm Riverent tando t hassociatede north Floodand eZonesast. restrict developmentIf future tod etheve northlopm andent east. can b e avoided in Flood Zones flood If futurerisk cdevelopmentan be man canag ebed avoidedby ado inp tFlooding t Zoneshe po floodlicies risk se t out in cant behe managed County byD eadoptingvelopm theen policiest Plan asetnd out th ine therec Countyomme ndations Developmentof the Pl aPlannn iandng Gtheu irecommendationsdelines. Howe vofe rthe a sPlanning a larg e area of the Guidelines.develo p Howeverment a rasea a ilarges wi tareahin ofF ltheoo ddevelopment Zone A it areais is within Flood Zone A it is recommended that an SFRA is completedrecom mat eLAPnd estage.d tha t an SFRA is completed at LAP stage. Conclusion SFRA required at LAP level Conclusion SFRA required at LAP level

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A.8 A.8Crossakeel CROSSAKEEL

SettlementSettlemen tArea Area 22.72 Ha 22.72 Ha

ZoningZonin gwithin withi nFlood Floo Zoned Zon Ae and/orA and /B?or B? No No Area for Further Assessment under CFRAM No Areaprog forram Furtherme? Assessment under CFRAM programme? No

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A.9 DONACARNEY A.9 Donacarney Settlement Area 97.85 Ha Settlement Area 97.85 Ha ZoningZonin gwithin with iFloodn Floo Zoned Zo nAe and/or A and B?/or B? NoNo AreaArea for fo Furtherr Furth eAssessmentr Assessme nundert und CFRAMer CFRA programme?M NoNo programme?

Implement Flood Risk Management policies from CDP

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A.10 DONORE A.10 Donore Settlement Area 40.35 Ha Settlement Area 40.35 Ha Zoning within Flood Zone A and/or B? No Zoning within Flood Zone A and/or B? No AreaArea for fo rFurther Furthe Assessmentr Assessmen undert und eCFRAMr CFRA Mprogramme? No No programme?

Conclusion No SFRA required Implement Flood Risk Management policies from CDP

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A.11 DROGHEDA SOUTHERN ENVIRONS A.11 SettlementDrogheda Area Southern Environs 691.77 Ha

ZoningSettle mwithinent A Floodrea Zone A and/or B? 691.77 Ha Yes Zoning within Flood Zone A and/or B? Yes Area for Further Assessment under CFRAM programme? No (but Drogheda, Co Louth is an Area Area for Further Assessment under CFRAM No (but Droforgh Furthereda, C oAssessment) Louth is an Area for programme? Further Assessment)

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA ©T Ordnancehe Flood Zo nSurveye mapp inIrelandg has b e&en Government produced in ac ofco rIreland,dance wi tMeathh the Pl a2012/31/CCMAnning Guidelines and therefore ignores the Theimp Floodact of fZonelood p mappingrotection shastruc tbeenures. produced Areas pro tinec accordanceted by flood dwithefen cthees s Planningtill carry a Guidelinesresidual risk andof f lothereforeoding due ignoresto theov eimpactrtoppin gof o rflood breac hprotection, there ma ystructures. also be no g uAreasarant eprotectede of maint enbya nfloodce in p edefencesrpetuity. Astillrea scarry that ab eresidualnefit fro riskm de fofe nces are annotated separately. Note that Flood Zone mapping is only reproduced within the settlement development floodingboundar y.due Fl otood overtoppingZone A – Flu voria l:breach, 1 in 10 0there year ormay 1% also AEP ,be T idnoal: guarantee1 in 200 ye aofr ormaintenance 0.5% AEP. Finlo operpetuity.d Zone B – 1 Areasin 100 0 thatyea benefitr or 0.1% from AEP. defences are annotated separately. Note that Flood Zone mapping is only reproduced within the settlement development boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or Flood Zone mapping data source PFRA & JFlow 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Historical Flooding R152 South of Drogheda Recurring Flood Zone mapping data source PFRAM &ar JFlowsh Road, Drogheda Recurring Railway Bridge on R152, Drogheda Recurring Historical Flooding R152 South of Drogheda Recurring Colp West Recurring Marsh Road, Drogheda Recurring Comment The flood zones will restrict the expansion of existing Railwaydev Bridgeelopme onnt R152,to the Drogheda south of tRecurringhe settlement area. Based Colp oWestn the Recurring settlement’s location on the border with County Louth, an SFRA is recommended considering the wider Comment The floodDrogh zoneseda a rewilla. restrict the expansion of existing developmentFurther r toev theiew southis req uofir theed fsettlementollowing th area.e pu b Basedlication on o fthe the settlement’sEastern locationCFRAM onflo othed h borderazard mwithapp Countying and Louth, subse anqu SFRAent is recommendedmanagemen consideringt plans. the wider Drogheda area. Conclusion FurtherJoi nreviewt SFRA is w requiredith Drog followingheda Bor theoug publicationh Council / of L otheuth Eastern CFRAMCou floodnty C ohazarduncil r eqmappinguired and subsequent management plans.

Conclusion Joint SFRA with Drogheda Borough Council / Louth County Council required

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A.12 DrumconrathA.12 DRUMCONRATH

SSettlementettlement AreaArea 48.47 Ha 48.47 Ha ZZoningoning withinwithin FloodFlood Zone Zone A A and/or and/o B?r B? Yes Yes Area for Further Assessment under CFRAM No Area for Further Assessment under CFRAM programme? No programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA © Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores the the impact of flood protection structures. Areas protected by flood defences still carry a residual risk of impact of flood protection structures. Areas protected by flood defences still carry a residual risk of flooding due to ofloodingvertoppin gdue or btore aovertoppingch, there ma yor a lbreach,so be no there guara nmaytee oalsof m abeint enona nguaranteece in perp etofu itymaintenance. Areas that inbe nperpetuity.efit from d e feAreasnces athatre a nbenefitnotated sfromepar adefencestely. Note aretha tannotated Flood Zon eseparately. mapping is onNotely re thatprod uFloodced w iZonethin t hemapping settlem isen tonly dev ereproducedlopment within btheoun settlementdary. Flood developmentZone A – Fluvia boundary.l: 1 in 100 y Floodear or 1Zone% AE AP ,– T Fluvial:idal: 1 i n1 2 in00 100 yea ryear or 0 .or5% 1% AE PAEP,. Flo Tidal:od Zo n1e in B 200– 1 i nyear 100 or0 y0.5%ear or AEP.0.1% FloodAEP. Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source JFlow Flood Zone mapping data source JFlow Historical Flooding Drumconrath Oct 1993; Dee Catchment Drumconrath Co. Historical Flooding DrumconrathMeath Au gOctust 1993;2008 ;Dee 24t hCatchment October 2Drumconrath011 Co. Meath Comment AugustDev e2008;lopm e24thnt i sOctober restrict e2011d by the River and the natural Comment Developmenttopograph isy orestrictedf the lan dby. theRec Riverent f landood itheng onaturalf prop topographyerties of thehig land.hligh t eRecentd floo dflooding risk in thofi s propertiesarea. highlighted flood risk in thisI area.n ligh t of the recent flooding and based on the natural constraints to expansion of the settlement, it is In light of the recent flooding and based on the natural constraints recommended that flood risk and management options to expansion of the settlement, it is recommended that flood risk for Drumconrath are assessed in more detail at LAP and management options for Drumconrath are assessed in more stage. detail at LAP stage. Conclusion SFRA required at LAP stage. Conclusion SFRA required at LAP level

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A.1A.133 Duleek DULEEK

SettlementSettlem eAreant Area 274.274.1717 Ha Ha Zoning within Flood Zone A and/or B? Yes Zoning within Flood Zone A and/or B? Yes Area for Further Assessment under CFRAM FEM FRAMS Areap rforog rFurtheramme? Assessment under CFRAM programme? FEM FRAMS

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA © Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores the the iimpactmpact o off fl ofloodod pro tprotectionection stru ctstructures.ures. Area s pAreasrotec teprotectedd by flood byde fefloodnces s tdefencesill carry a rstillesid ucarryal ris ka oresidualf floodin grisk due oft o floodingoverto pduepin gto o r overtoppingbreach, there orm abreach,y also b ethere no gu amayran tealsoe of mbea innote nguaranteeance in pe rpofe tumaintenanceity. Areas th aint b eperpetuity.nefit from d eAreasfences thata benefitre annot afromted s epdefencesarately. Nareote tannotatedhat Flood Z oseparately.ne mapping isNote onl ythat rep roFloodduced Zonewithi n tmappinghe settle ism enonlyt de reproducedvelopment within the bsettlementoundary. F lodevelopmentod Zone A – F lboundary.uvial: 1 in 1 0 Flood0 year Zoneor 1% A A E–P Fluvial:, Tidal: 11 i nin 2 10000 y eyearar or or0. 51%% A AEP,EP. F Tidal:lood Z o1n ine B200 – 1 yearin 10 0or0 year or 0.1% AEP. 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source FEM FRAMS FloodHi sZonetoric amappingl Floodin datag source FEM FRAMSNanny Duleek -Nov 2000, Sept 1975, Jan 1992, June 1993 and Mar 1980 Historical Flooding Nanny Duleek -Nov 2000, Sept 1975, Jan 1992, June 1993 and Comment Mar 1980 The Nanny River has a significant history of flooding and through Duleek has been subject to a detailed Comment The Nannyf lRiverood r ihassk s at usignificantdy. The r echistoryomm eofn dfloodingations of tandh e study through Duleekhave hasnow been resu lsubjectted in t htoe ac odetailednstruct ifloodon of friskloo d study. Thed recommendationsefences to help pr oofte thect r studyecent havedeve lnowopm eresultednt at in the constructionAbbeylan ofds flood, Mill Rdefencesace and Otoa khelpleig hprotect. The srecente area s developmentare atin Abbeylands,dicated on t hMille fi gRaceure aandbov Oakleigh.e. These areas are indicatedIt ison r ethecom figuremend eabove.d that the site is assessed in more It is recommendeddetail at thatLAP thestag sitee, t aisk iassessedng into a cinco moreunt t hdetaile spe atci fics LAP stage,p takingresent intoed i naccount the Flo theod Rspecificselief Stud ypresented and the inFE theM Flood ReliefFR StudyAMS. and Thi sthe sh FEMould cFRAMS.onsider oThisvera shouldll man aconsidergement of overall managementflood risk iofn tfloodhe se trisktlem ine nthet a nsettlementd assess t hande r eassesssidual the risk in defended areas. residual risk in defended areas. Conclusion SFRA required at LAP stage, taking into account any Conclusion SFRA requiredreco matm LAPend stage,ations takingof the intoFEM account FRAMS any recommendations of the FEM FRAMS

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A.14 DunboyneA.14 DUNBOYNE Clonee CLONEEPace PACE Settlement Area 639.69 Ha Settlement Area 639.69 Ha Zoning within Flood Zone A and/or B? Yes Zoning within Flood Zone A and/or B? Yes Area for Further Assessment under CFRAM No prAreaogra formm Furthere? Assessment under CFRAM programme? No

©© O Ordnancerdnance S uSurveyrvey Ir Irelandeland & & G Governmentovernment o fof I rIreland,eland, M Meatheath 2 2012/31/CCMA012/31/CCMA ThThee Fl oFloodod Zo Zonene ma mappingpping has has bee beenn pro dproduceduced in ac inco accordancerdance with twithhe P ltheann iPlanningng Guide lGuidelinesines and th eandrefo thereforere ignores ignoresthe imthepac timpact of floo dof p floodrotect ioprotectionn structur estructures.s. Areas p roAreastecte dprotected by flood dbyef enfloodces s tidefencesll carry a rstillesid ucarryal ri sak residualof flood iriskng d uof e to ovfloodingertopping dueor b tore aovertoppingch, there ma yor a lbreach,so be n othere guar anmaytee alsoof m beain tnoen aguaranteence in pe rpofe tumaintenanceity. Areas th inat bperpetuity.enefit from dAreasefen ces arthate an nbenefitotated s fromepara tdefencesely. Note aretha tannotated Flood Zon eseparately. mapping i s oNotenly rthatepro dFlooduced Zonewithi n tmappinghe settl eism eonlynt dreproducedevelopment within botheund settlementary. Flood Zdevelopmentone A – Fluvia boundary.l: 1 in 100 yFloodear or Zone 1% A AE P–, Fluvial:Tidal: 1 1in in 2 01000 ye yearar or or 0. 51%% AAEP,EP. Tidal:Flood 1Z oinn e200 B – year 1 in or10 00 ye0.5%ar or 0AEP..1% AFloodEP. Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source Tolka Flooding Study HFloodistoric Zoneal Flo mappingoding data source Tolka Flooding StudyTolka and Castle Stream Nov 2000, 25 August Historical Flooding Tolka and Castle1 9Stream86 an dNov No 2000,v 200 252. August 1986 and Nov Comment 2002. Note that the LAP boundary is not identified in Comment Note that the LAPthi sboundary analysis is. not identified in this analysis. Detailed modelling of the Castle Stream and Detailed modelling of the Castle Stream and Tolka River has Tolka River has been undertaken and a flood been undertaken and a flood relief scheme is now in place with relief scheme is now in place with significant significant areas benefiting from defences. areas benefiting from defences. It is recommendedIt is thatrec othemm settlementended th aist assessedthe settl einm moreent i sdetail at LAP stage, taking into account the detail presented in the Tolka assessed in more detail at LAP stage, taking Flooding Study. This will consider overall management of flood into account the detail presented in the Tolka risk in the settlement and assess the residual risk in defended Flooding Study. This will consider overall areas. management of flood risk in the settlement Conclusion SFRA required atan LAPd as stage.sess the residual risk in defended areas. Conclusion SFRA required at LAP stage.

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A.15 DUNSHAUGHLIN A.15 Dunshaughlin

SettlementSettlemen tArea Area 460.27 Ha460.27 Ha ZoningZoning within withi nFlood Floo Zoned Zo nAe and/orA and B?/or B? Yes (MargYesina l(Marginal)) AreaArea for fo rFurther Furthe Assessmentr Assessme nundert und CFRAMer CFRA programme?M FEM FRAMFEMS FRAMS programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA © Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores the the impact of flood protection structures. Areas protected by flood defences still carry a residual risk of impact of flood protection structures. Areas protected by flood defences still carry a residual risk of flooding due to floodingovertopp indueg o rto b reovertoppingach, there m oray breach,also be nthereo gua ramaynte ealso of mbea innote nguaranteeance in pe rofpe tumaintenanceity. Areas th inat bperpetuity.enefit from dAreasefenc es thatare abenefitnnotate dfrom sepa rdefencesately. No taree t hannotatedat Flood Zo nseparately.e mapping isNote only thatrepr oFloodduce d Zonewith in mappingthe sett lisem eonlynt dreproducedevelopment within thebou settlementndary. Floo ddevelopment Zone A – Fluv boundary.ial: 1 in 10 0 Flood year oZoner 1% AE –P ,Fluvial: Tidal: 1 1 i nin 2 10000 y eyearar o ror 0 .1%5% AAEP,EP. Tidal:Flood 1Z oinn e200 B – year1 in 1or00 0 0.5%year o AEP.r 0.1 % Flood AEP. Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source FEM FRAMS & PFRA Flood Zone mapping data source FEM FRAMS & PFRA Historical Flooding Dunshaughlin East Nov 2000 HistoricalCommen Floodingt DunshaughlinThe F Eastlood NovZon e2000s will not hinder future development Comment The Floodan Zonesd zon iwillng fnotor nhinderew de futurevelop mdevelopmentent in area sand of zoninghigh for new fdevelopmentlood risk can in b arease avo ofid ehighd. flood risk can be avoided. Some potential for surface water ponding has been Some potential for surface water ponding has been identified in identified in the Knocks area in the west of the Knocks area in the west of Dunshaughlin. Dunshaughlin. Flood riskFl ocanod beris kmanaged can be byma adoptingnaged b ythe ad policiesopting setthe outpol iinci ethes County Developmentset out in th ePlan, Cou thenty recommendationsDevelopment Pla nof, thethe Planning Guidelinesrec andom manyen containeddations o fwithin the P thelan nFEMing GFRAMS.uidelines and any Conclusion No SFRAc orequiredntained within the FEM FRAMS. Conclusion ImplementNo FloodSFRA Risk req uManagementired policies from CDP and any FEM FRAMSImpl erecommendations.ment Flood Risk Management policies from CDP and any FEM FRAMS recommendations.

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A.16 ENFIELD A.16 Enfield Settlement Area 199.96 Ha Settlement Area 199.96 Ha ZoningZonin gwithin with inFlood Floo Zoned Zo nAe and/orA and /B?or B? No No AreaAre afor fo Furtherr Furth eAssessmentr Assessme nundert und eCFRAMr CFRA Mprogramme? No No programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA ©T hOrdnancee Flood Zo nSurveye mappi nIrelandg has b e&en Government produced in ac ofco rIreland,dance wi tMeathh the Pl a2012/31/CCMAnning Guidelines and therefore ignores the Theimp Floodact of fZonelood p mappingrotection shastruc tbeenures. produced Areas pro tinec accordanceted by flood dwithefen cthees sPlanningtill carry a Guidelines residual ris kand of f lthereforeooding du eignores to theov eimpactrtoppin gof o rflood breac hprotection, there ma ystructures. also be no g uAreasarant eprotectede of maint ebyna nfloodce in p edefencesrpetuity. stillAre acarrys tha ta beresidualnefit fro riskm de off ences floodingare anno tadueted to se povertoppingarately. Not eor t hbreach,at Flood thereZone mmayapp ialsong is beon lyno r eguaranteeproduced w ofith inmaintenance the settleme innt dperpetuity.evelopmen t Areas thatbou benefitndary. F lfromood Z odefencesne A – Flu vareial : annotated1 in 100 y easeparately.r or 1% AE P,Note Tida thatl: 1 i nFlood 200 yeZonear o r 0mapping.5% AEP is. Fonlylood reproduced Zone B – 1 i n within1000 year or 0.1% AEP. the settlement development boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or 0.5%Floo dAEP. Zo n Floode ma pZoneping B d –a 1ta in s 1000ourc eyear or 0.1%n/a AEP. Historical Flooding Main Street, Enfield Recurring (minor surface water Flood Zone mapping data source n/a issue) HistoricalCommen Floodingt Main Street,The R oEnfieldyal Ca naRecurringl runs th (minorrough Esurfacenfield . waterThe issue)Flood Zones map fluvial and tidal flood risk. They do not take into Comment The Royalacc oCanalunt f lrunsood rthroughisk from Enfield. artificia l The/ m aFloodnma dZonese cha nmapne ls. fluvial Handow etidalver , floodas th risk.e Ca n aTheyl do edos nnotot takecom pintorise account signific afloodnt risk fromem artificialbankme n/ tsmanmade flood ris kchannels. is not c o nHowever,sidered aass thebei nCanalg does nothig compriseh. There significantfore mana gembankmentsement of floo dflood risk riskcan isbe not consideredachie asve dbeing thro high.ugh t hThereforee adoptio managementn of the poli cofie sflood set o riskut i n can bet achievedhe CDP. through the adoption of the policies set out in the CDP. S ome potential for surface water ponding in the north- Some potentialeast and forso usurfaceth-wes watert of th pondinge settlem ine thent. north-east and Conclusions south-westNo S FofR Athe re settlement.quired Implement Flood Risk Management policies from CDP Conclusion No SFRA required Implement Flood Risk Management policies from CDP

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A.17 GibbstownA.17 GIBBSTOWN

SSettlementettlement AreaArea 44.1 H44.1a Ha ZZoningoning withinwithin Flood Flood Zone Zon eA Aand/or and/ B?or B? No No AArearea fforor FurtherFurthe rAssessment Assessmen undert und eCFRAMr CFRA Mprogramme? No No programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA T©h eOrdnance Flood Zone Survey mappin gIreland has be e&n Governmentproduced in ac cofor Ireland,dance wi tMeathh the P la2012/31/CCMAnning Guidelines and therefore ignores the imThepa cFloodt of fl oZoneod pr omappingtection s thasruct ubeenres. produced Areas pro tinec accordanceted by flood dwithefen cthees sPlanningtill carry aGuidelines residual ri sandk of thereforeflooding d uignorese to overtopping or breach, there may also be no guarantee of maintenance in perpetuity. Areas that benefit from defences the impact of flood protection structures. Areas protected by flood defences still carry a residual risk of are annotated separately. Note that Flood Zone mapping is only reproduced within the settlement development bfloodingoundary. dueFloo tod Zovertoppingone A – Fluv iaorl: breach,1 in 100 there year ormay 1% also AEP ,be T idnoal : guarantee1 in 200 y eofar omaintenancer 0.5% AEP. in F loperpetuity.od Zone B – Areas1 in 1 000 ythatear obenefitr 0.1% AfromEP. defences are annotated separately. Note that Flood Zone mapping is only reproduced within the settlement development boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or Flood Zone mapping data source n/a 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Historical Flooding No

CFloodomm Zoneent mapping data source n/a No fluvial flood risk identified and no flood history. Conclusions No SFRA required Historical Flooding No Implement Flood Risk Management policies from Comment No fluvial CfloodDP risk identified and no flood history. Conclusion No SFRA required Implement Flood Risk Management policies from CDP

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Strategic Flood Risk Assessment for County Meath A6

A.18 Gormanston A.18 GORMANSTON Settlement Area 197.71 Ha Settlement Area 197.71 Ha Zoning within Flood Zone A and/or B? No Zoning within Flood Zone A and/or B? No Area for Further Assessment under CFRAM FEM FRAMS prograAreamme for? Further Assessment under CFRAM programme? FEM FRAMS

Flood ZFloodone Zonemap pmappinging dat adata so usourcerce FEM FRAMSFEM FRAMS Historical Flooding No Historical Flooding No Comment The Flood Zones will not hinder future Comment The Flood Zones will not hinder future development and zoning development and zoning for new development for new development in areas of high flood risk can be avoided. in areas of high flood risk can be avoided. Flood risk can be managed by adopting the policies set out in the Flood risk can be managed by adopting the County Development Plan, the recommendations of the Planning Guidelines andpo lanyicie containeds set out withinin the the Co FEMunty FRAMS. Develo pment Plan, the recommendations of the Planning Conclusion No SFRA requiredGuidelines and any contained within the FEM Implement FloodFRAM RiskS. Management policies from CDP and any Conclusion FEM FRAMSN recommendations.o SFRA required Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations.

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A6 Strategic Flood Risk Assessment for County Meath

A.19 Julianstown A.19 JULIANSTOWN Settlement Area 115.57 Ha Zoning wSettlementithin Flo oAread Zone A and/or B? Yes 115.57 Ha Area for ZoningFurth withiner As sFloodessm Zoneent A u and/ornder B?CFRAM FEM FRAYesMS programAreame? for Further Assessment under CFRAM programme? FEM FRAMS

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA © OrdnanThece FloodSurv eZoney Ir mappingeland & has Go beenvern producedment of in I raccordanceeland, Me withath the20 1Planning2/31/ GuidelinesCCMA and therefore ignores The Flood theZon impacte map ofpi nfloodg ha s protectionbeen pro dstructures.uced in a cAreascord aprotectednce with tbyh eflood Plan ndefencesing Guid stillelin ecarrys an ad residual theref oriskre i gof nores the impact of ffloodinglood pro tdueect itoon overtopping structures .or Abreach,reas pthererotec temayd balsoy f lobeo dno d eguaranteefences s tiofll cmaintenancearry a resid inu aperpetuity.l risk of fl o oAreasding due to overtoppinthatg o rbenefit breach from, the rdefencese may a lsareo bannotatede no gua rseparately.antee of m Noteaint ethatnan Floodce in pZoneerp etmappinguity. A isre onlyas t hreproducedat benefit fwithinrom defences are annotatheted settlement separatel ydevelopment. Note that boundary.Flood Zo n Floode ma pZoneping A i s– oFluvial:nly re p1r inod 100uce dyear wi torhi n1% th eAEP, set Tidal:tleme 1n int d 200eve yearlopm ore nt boundary. 0.5% Floo dAEP. Zo n Floode A – Zone Fluv iBa l:– 1 inin 1000100 yyearear oror 0.1% 1% AAEP.EP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood ZoFloodne m Zoneapp mappinging dat adata so sourceurce FEMF FRAMSEM FRAMS HistoricaHistoricall Floodi nFloodingg No No CommenCommentt The majorityThe m aofj ocurrentrity o landf cu userre nzoningst land are us appropriate.e zonings are Flooda priskpr canopr beiat managede. by adopting the policies set out in the CountyFlo Developmentod risk can Plan, be thema recommendationsnaged by adop ofti ntheg Planningthe pol icies set Guidelines and any contained within the FEM FRAMS. out in the County Development Plan, the Conclusion No SFRAreco requiredmmendations of the Planning Guidelines and any Implementconta Floodined Riskwith Managementin the FEM policies FRAM fromS. CDP and any FEM FRAMS recommendations. Conclusion No SFRA required Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations.

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Strategic Flood Risk Assessment for County Meath A6

A.20 Kells A.20 KELLS Settlement Area 507.93 Ha Settlement Area 507.93 Ha Zoning within Flood Zone A and/or B? Yes Zoning within Flood Zone A and/or B? Yes

Area for AreaFur tforhe Furtherr Ass eAssessmentssment u undernde rCFRAM CFRA programme?M NoNo programme?

© Ordnan©c eOrdnance Survey Survey Irela nIrelandd & G &o vGovernmenternment ooff Ireland,Irelan dMeath, Me a2012/31/CCMAth 2012/31/CCMA The Flood TheZon Floode ma Zoneppin gmapping has be hasen pbeenrod uproducedced in a incc accordanceordance w withith tthehe PlanningPlannin gGuidelines Guidelin andes athereforend ther eignoresfore ig nores the the impact of flood protection structures. Areas protected by flood defences still carry a residual risk of impact of flood protection structures. Areas protected by flood defences still carry a residual risk of flooding due to flooding due to overtopping or breach, there may also be no guarantee of maintenance in perpetuity. Areas overtoppinthatg o rbenefit breac hfrom, th edefencesre may aarels oannotated be no g useparately.arantee ofNote m athatinte Floodnanc eZone in pemappingrpetu iisty .only A rreproducedeas that b ewithinnefit from defences are annotatheted settlement separate ldevelopmenty. Note tha boundary.t Flood Z Floodone m Zoneapp Ain g– Fluvial:is only 1 rine p100rod yearuce dor w1%ith AEP,in th Tidal:e se t1t linem 200en tyear de vore lopment boundary. 0.5% Floo AEP.d Zo nFloode A –Zone Flu vBi a–l :1 1in i1000n 10 0year ye orar 0.1%or 1% AEP. AEP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood ZoFloodne m Zoneapp mappinging da datata s sourceource Kells StormwaterKe Drainagells Sto rStudy,mwa JFLOWter Dr andain aPFRAge Study, JFLOW and Historical Flooding Historic floodingPF ofR theA Newrath Stream HistoricaCommentl Flooding Development toH theist onorthric foflo theod towning oisf restrictedthe Ne bywr theath Stream Blackwater River. The Newrath Stream is also a source of flood Comment risk to the futureD edevelopmentvelopme noft landsto t htoe the no eastrth andof westthe ofto wn is restricted Bective Street andby priorthe toB ltheac kjunctionwater with Riv theer .River Th Blackwater.e Newra t h Stream is It is recommendedalso that a thesou settlementrce of f liso oassessedd risk tino more the detailfutu re at Developmentd Planeve stagelopm takingent ointof l aaccountnds t othe t hspecificse east aof nd west of the Kells Stormwater Drainage Study. Bective Street and prior to the junction with the Conclusion SFRA required Rati Developmentver Blackw Planate stager. taking account of the Kells Stormwater Drainage Study. It is recommended that the settlement is assessed in more detail at Development Plan stage taking into account the specifics of the Kells Stormwater Drainage Study. Conclusion SFRA required at Development Plan stage taking

2011s5504acco uSFRntA o Lfive th Reporte Kel l(v1.11s Sto Decemberrmwate 2012).docr Drainage S365tudy.

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A6 Strategic Flood Risk Assessment for County Meath

A.21 A.21Kentstown KENTSTOWN

SettlementSettlemen Areat Area 75.22 Ha 75.22 Ha ZoningZonin gwithin with inFlood Floo Zoned Zo nAe and/orA and /B?or B? Yes Yes

AreaAre afor fo Furtherr Furth eAssessmentr Assessme nundert und eCFRAMr CFRA Mprogramme? FEM FRAMSFEM FRAMS programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA ©T Ordnancehe Flood Zo nSurveye mappi nIrelandg has b e&en Government produced in ac ofcor Ireland,dance wit Meathh the Pla 2012/31/CCMAnning Guidelines and therefore ignores the Theimp Floodact of fZonelood p mappingrotection shastruc tbeenures. produced Areas pro tinec accordanceted by flood dwithefen cthees s tPlanningill carry a Guidelinesresidual risk andof fl othereforeoding due ignoresto overtopping or breach, there may also be no guarantee of maintenance in perpetuity. Areas that benefit from defences the impact of flood protection structures. Areas protected by flood defences still carry a residual risk of are annotated separately. Note that Flood Zone mapping is only reproduced within the settlement development floodingboundar y.due Fl otood overtoppingZone A – Flu viora l:breach, 1 in 10 0there year ormay 1% also AEP , beTi dnoal: guarantee1 in 200 ye aofr ormaintenance 0.5% AEP. Finlo operpetuity.d Zone B – 1 Areasin 100 0 thatyea rbenefit or 0.1% from AEP. defences are annotated separately. Note that Flood Zone mapping is only reproduced within theFlo settlementod Zone m developmentapping data boundary. source Flood ZoneF AE M– Fluvial: FRAM S1 in 100 year or 1% AEP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Historical Flooding Kentstown on CR390 Recurring (minor local drainage issue) Flood Zone mapping data source FEM FRAMS Comment The River Nanny restricts development to the south. Historical Flooding KentstownH onow eCR390ver, t hRecurringe Flood Z (minorones w localill no drainaget hinder issue)future development to the north and zoning for new Comment The River Nanny restricts development to the south. However, development in areas of high flood risk can be the Flood Zones will not hinder future development to the north avoided. and zoning for new development in areas of high flood risk can be avoided. Flood risk can be managed by adopting the policies set out in the County Development Plan, the Flood risk rcaneco bemm managedendation bys o adoptingf the Pla nthenin policiesg Guide setline outs a nind the County Developmentany contain Plan,ed w ithethin recommendations the FEM FRAMS. of the Planning Guidelines and any contained within the FEM FRAMS. Conclusion No SFRA required Conclusion No SFRA requiredImplement Flood Risk Management policies from ImplementC DFloodP an dRisk an yManagement FEM FRAMS policies recomm fromend aCDPtion sand. any FEM FRAMS recommendations.

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Strategic Flood Risk Assessment for County Meath A6

A.22 Kilbride A.22 KILBRIDE Settlement Area 61.52 Ha Settlement Area 61.52 Ha Zoning within Flood Zone A and/or B? Yes Zoning within Flood Zone A and/or B? Yes Area for Further Assessment under CFRAM No Area for Further Assessment under CFRAM programme? No programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA © OrdnaThence Flood Surv Zoneey I rmappingeland & has Go beenvern producedment of in I raccordanceeland, M ewithath the 20 Planning12/31/ GuidelinesCCMA and therefore ignores The Floodthe Zo nimpacte map ofp infloodg ha sprotection been pr ostructures.duced in a cAreascord aprotectednce with byth eflood Plan ndefencesing Guid stillelin ecarrys an ad residualtheref oriskre i gof nores the impact of floodingflood pr oduetec ttoio novertopping structures .or breach,Areas pthererote ctmayed balsoy f lobeo dno d eguaranteefences s tiofll cmaintenancearry a resid inu aperpetuity.l risk of fl o oAreasding due to overtoppinthatg o rbenefit breac hfrom, the rdefencese may a lareso bannotatede no gua separately.rantee of m Noteaint ethatna nFloodce in pZoneerp etmappinguity. A isre aonlys t hreproducedat benefit frwithinom defences are annotathete dsettlement separate ldevelopmenty. Note that boundary. Flood Zo n Floode ma pZoneping A i s– oFluvial:nly re p1r inod 100uce dyear wi torhi n1% th eAEP, set Tidal:tleme 1n tin d 200eve lyearopm oren t boundary.0.5% Floo AEP.d Zo nFloode A – Zone Fluv Bia l–: 11 inin 1000 100 yearyear oro r0.1% 1% AAEP.EP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source Eastern CFRAM Flood Risk Review (PFRA) Flood Zone mapping data source Eastern CFRAM Flood Risk Review (PFRA) Historical Flooding Kilbride Recurring Historical Flooding Kilbride Recurring Comment The Ward River bisects the development area of Kilbride. Comment The Ward River bisects the development area of Further review is required, however based on the rural nature of the settlement,Kilbride. the Flood Zones will not hinder future developmentFurth eandr r zoningeview for is newreq udevelopmentired, how einv areaser b aofs ehighd o n the flood riskrur acanl n beat uavoided.re of t he settlement, the Flood Zones will Flood riskno tcan hi nbed emanagedr futur eby d adoptingevelop mthee npoliciest and set zo outnin ing for new the Countydev eDevelopmentlopment in Plan ar eandas theof hrecommendationsigh flood risk ofca then b e Planning Guidelines. avoided. Conclusion No SFRAFlo requiredod risk can be managed by adopting the policies Implementset oFloodut i nRisk th eManagement County D policiesevelop frommen CDPt Plan and the recommendations of the Planning Guidelines. Conclusion No SFRA required Implement Flood Risk Management policies from CDP

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A6 Strategic Flood Risk Assessment for County Meath

A.23 KilcockA.23 KILCOCK

SettlemSettlementent Are aArea 95.59 Ha95.59 Ha ZoningZoning with iwithinn Flo oFloodd Zo Zonene A A a and/ornd/o rB? B? Yes Yes Area fAreaor F uforrt hFurtherer As sAssessmentessment u undernder CFRAMCFRAM programme? No (but KNoilc o(butck ,Kilcock, Co Kil dCoa rKildaree is a nis Aanre Areaa fo r programme? Further Aforss eFurtherssmen Assessment)t)

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA The Flo©od Ordnance Zone map Surveyping ha Irelands been p&r oGovernmentduced in acc oofrd Ireland,ance wi tMeathh the P 2012/31/CCMAlanning Guidelines and therefore ignores the impact Theof fl oFloodod p rZoneotect mappingion struc thasure sbeen. A rproducedeas prote inct eaccordanced by flood dwithefe ntheces Planning still carr Guidelinesy a residua andl ris ktherefore of flood iignoresng due to overtopthepin gimpact or br eofac floodh, the rprotectione may als ostructures. be no gu arAreasante eprotected of maint ebyn afloodnce in defencesperpetui tstilly. Acarryreas a thresidualat ben eriskfit f rof om defences are annfloodingotated s eduepar atote lovertoppingy. Note th aort Fbreach,lood Z otherene m apmaypi nalsog is oben lyno r eguaranteeproduced ofw itmaintenancehin the sett inle mperpetuity.ent devel o pAreasmen t boundathatry. benefitFlood Z ofromne A defences– Fluvial : are1 i nannotated 100 yea r separately.or 1% AE P , NoteTid athatl: 1 iFloodn 200 Zoneyear omappingr 0.5% is A EonlyP. Freproducedlood Zone Bwithin – 1 in 1000 year or the0.1 settlement% AEP. development boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or Flood 0.5%Zon eAEP. ma Floodppin gZone da tBa – s 1o inu r1000ce year or 0.1%Rive AEP.r Rye Water Flood Risk Assessment and Management Study HistorFloodical F Zonelood imappingng data source RiverR Ryeye wWaterater FloodBalfe Riskagh Assessmentan Bridge Kandilco Managementck 18th Au gStudyust 2008 CommHistoricalent Flooding RyewaterHist oBalfeaghanric floodi nBridgeg in KKilcockilcock 18th has August lead t 2008o a Flood Risk Comment HistoricAs sfloodingessme nint aKilcocknd M ahasna leadgem toe na tFlood Stu dRisky. TAssessmenthe and Managementrecommen dStudy.ation sThe of recommendationsthe study have of re thesu lstudyted i n the have dresultedetailed in d thees idetailedgn of a design flood ofa lale floodviatio alleviationn schem schemee whic h has whichn hasow nowbee nbeen sub submittedmitted f oforr pplanninglannin gpermission. permissi o Potentialn. Pote ntial areasa benefitingreas ben efromfitin theg f rschemeom th eare sc indicatedheme a inre theind figureicate d in the above.fig ure above. ConcluConclusionsion FurtherFu examinationrther exam inin lineati owithn in The lin ePlanning with T Systemhe Pla nandni nFloodg Sy stem Risk Management – Guidelines for Planning Authorities” (OPW/ and Flood Risk Management – Guidelines for Planning DoEHLG, 2009) may be required. Authorities” (OPW/DoEHLG, 2009) may be required.

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Strategic Flood Risk Assessment for County Meath A6

A.24 Kildalkey A.24 KILDALKEY Settlement Area 54.85 Ha Zoning wSettlementithin Floo Aread Zone A and/or B? Yes 54.85 Ha Area for ZoningFurth ewithinr As sFloodessm Zoneent Au nand/order CB?FRAM No Yes programAreame? for Further Assessment under CFRAM programme? No

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA © OrdnanThece SFloodurve Zoney Ir emappingland & hasGo vbeenernm producedent of Iinr eaccordanceland, Mea withth 2 the01 2Planning/31/C CGuidelinesMA and therefore ignores The Flood theZon impacte map pofin floodg has protectionbeen pro dstructures.uced in ac cAreasorda nprotectedce with t hbye Pfloodlanni ndefencesg Guide lstilline scarry and at hresidualerefor erisk ign ofo res the impact of ffloodinglood pro tdueect itoon overtoppingstructures. or Abreach,reas p rthereotect edmay b yalso flo obed dnoe feguaranteences stil l ofc armaintenancery a residu ainl rperpetuity.isk of floo diAreasng d ue to overtoppinthatg or benefitbreach ,from ther edefences may al sareo b eannotated no guar aseparately.ntee of m aNoteinte nthatanc eFlood in p eZonerpet umappingity. Ar eisa sonly tha reproducedt benefit fr omwithin de fences are annotatheted settlementseparately development. Note that Fboundary.lood Zon e Flood map pZoneing iAs o– nFluvial:ly repr 1o dinu 100ced yearwith iorn t1%he sAEP,ettl eTidal:men t1 d ine v200elo pyearme nort boundary. 0.5% Floo dAEP. Zon eFlood A – ZoneFluvi aBl: – 1 1 i nin 1100000 y eyearar o orr 10.1%% A EAEP.P, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source Eastern CFRAM Flood Risk Review (PFRA) Flood Zone mapping data source Eastern CFRAM Flood Risk Review (PFRA) Historical Flooding No Historical Flooding No Comment This settlement was not included as an Area for Further Comment This settlement was not included as an Area for Assessment in the Eastern CFRAM Flood Risk Review; indicating that floodFurt hrisker inA sthese ssettlementsment in is thmanageable,e Eastern from CF Ra AplanningM Floo d Risk perspective.Revie w ; indicating that flood risk in the settlement is The Floodman Zonesagea bwillle ,not fro hinderm a pfuturelann developmenting perspe candtiv ezoning. for newTh developmente Flood Zo nine areass wi lofl n highot h floodinde rrisk fu tcanur ebe d avoided.evelop m ent Flooda risknd canzo nbein managedg for ne byw adoptingdevelop them epoliciesnt in asetre aouts oinf high the Countyflood Development risk can be Plan av oandide thed. recommendations of the Planning Guidelines. Flood risk can be managed by adopting the policies Conclusion No SFRAset requiredout in the County Development Plan and the Implementrecom Floodme nRiskdat Managementions of the policiesPlann ifromng G CDPuidelines. Conclusion No SFRA required Implement Flood Risk Management policies from CDP

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A6 Strategic Flood Risk Assessment for County Meath

A.25 Kilmainhamwood A.25 KILMAINHAMWOOD Settlement Area 31.08 Ha Settlement Area 31.08 Ha Zoning within Flood Zone A and/or B? Yes Zoning within Flood Zone A and/or B? Yes Area for Further Assessment under CFRAM No programme?Area for Further Assessment under CFRAM programme? No

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA The© Flood Ordnance Zone mapping Survey hasIreland been & produced Government in accordance of Ireland, with Meath the Planning 2012/31/CCMA Guidelines and therefore ignores the impact of flood protection structures. Areas protected by flood defences still carry a residual risk of flooding due to The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores overtopping or breach, there may also be no guarantee of maintenance in perpetuity. Areas that benefit from defences the impact of flood protection structures. Areas protected by flood defences still carry a residual risk of are annotated separately. Note that Flood Zone mapping is only reproduced within the settlement development boundary.floodingFlood due Zoneto overtopping A – Fluvial: or 1 breach, in 100 yearthere or may 1% also AEP, be Tidal: no guarantee 1 in 200 yearof maintenance or 0.5% AEP. in perpetuity. Flood Zone BAreas– 1 in 1000 yearthat or 0.1% benefit AEP. from defences are annotated separately. Note that Flood Zone mapping is only reproduced within the settlement development boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or Flood0.5% Zone AEP. mapping Flood Zone data B – 1 source in 1000 year or 0.1% AEP. Neagh-Bann CFRAM Flood Risk Review (PFRA) Historical Flooding Kilmainhamwood CR104 Recurring Flood Zone mapping data source Neagh-Bann CFRAM Flood Risk Review (PFRA) Comment Development is constrained to the north and Historical Flooding Kilmainhamwoodeast CR104 by theRecurring River to the west by elevated Comment Development isground. constrainedThis to the settlement north and waseast by not the included River to as the west by elevatedan Area ground. for Further This settlement Assessment was notin included the as an Area for FurtherNorth WAssessmentest Neagh inBann the NorthWestCFRAM Flood NeaghBann Risk CFRAM Flood RiskReview; Review; indicating indicating thatthat flood flood risk risk in inthe the settlement is manageable,settlement from is manageable, a planning perspective. from a planning Flood risk can beperspective. managed by adopting the policies set out in the County DevelopmentFlood risk Plan can and be the managed recommendations by adopting of the the Planning Guidelines.policies set out in the County Development Conclusion No SFRA requiredPlan and the recommendations of the Planning Guidelines. Implement Flood Risk Management policies from CDP Conclusion No SFRA required Implement Flood Risk Management policies from CDP

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Strategic Flood Risk Assessment for County Meath A6 A.26 Kilmessan

Settlement AA.26rea KILMESSAN 68.78 Ha

Zoning withiSettlementn Flood AreaZone A and/or B? Yes 68.78 Ha Area for FurtZoningher Awithinsse sFloodsme Zonent u An and/order CB?FRAM No Yes programme?Area for Further Assessment under CFRAM programme? No

© Ordnance S©u Ordnancervey Ire Surveyland &Ireland Gov e&r Governmentnment of ofIr Ireland,eland, Meath Mea t2012/31/CCMAh 2012/31/CCMA The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores The Flood Zonethe m aimpactppin gof h floodas b eprotectionen prod ustructures.ced in a cAreascord aprotectednce wi thby tfloodhe P ladefencesnning Gstillui dcarryelin ae sresidual and triskher ofe fore ignores the impact of flood floodingprotect idueon tost rovertoppinguctures. orA rbreach,eas p thererote ctmayed alsoby fbelo onod guaranteedefence sof stmaintenanceill carry a inr eperpetuity.sidual ri s kAreas of f looding due to overtopping or thatbre abenefitch, th fromere mdefencesay als oare b eannotated no gua rseparately.antee of mNoteai nthatten Floodance Zonein p emappingrpetui isty .only A rreproducedeas that bewithinnef it from defences are annotated stheep asettlementrately. Ndevelopmentote that F lboundary.ood Zon eFlood ma pZonepin gA –is Fluvial: only r1e inp r100odu yearced or w 1%ith iAEP,n th Tidal:e se t1t line m200en yeart de orv elopment boundary. Floo0.5%d Zo AEP.ne A Flood – Fl uZonevial :B 1 – 1in in 1 100000 y yearear oror 0.1% 1% AEP.AEP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AFloodEP. Zone mapping data source Eastern CFRAM Flood Risk Review (PFRA) & JFlow

Flood Zone mHistoricalappin Floodingg data source No Eastern CFRAM Flood Risk Review (PFRA)

Comment Based on the proportion & JF lofo wland within Flood Zone A and the constraint to development within the settlement boundary, it Historical Flooding is recommended Nthato flood risk and management options are assessed in more detail at LAP stage. Comment Based on the proportion of land within Flood Conclusion SFRA required at ZLAPon stage.e A and the constraint to development within the settlement boundary, it is recommended that flood risk and management options are assessed in more detail at LAP 2011s5504sta gSFRe.A L ive Report (v1.11 December 2012).doc 371 Conclusion SFRA required at LAP stage.

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A6 Strategic Flood Risk Assessment for County Meath

A.27 Laytown A.27 LAYTOWN Settlement Area 171.43 Ha Zoning wSettlementithin Flo oAread Zone A and/or B? Yes 171.43 Ha Area forZoning Furth withiner As sFloodessm Zoneent A u and/ornder B?CFRAM FEM FRYesAMS programAreame? for Further Assessment under CFRAM programme? FEM FRAMS

© Ordnan©c Ordnancee Survey SurveyIrelan dIreland & Go v&e Governmentrnment of I ofre Ireland,land, M Meatheath 2 2012/31/CCMA012/31/CCMA The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores the the impact of flood protection structures. Areas protected by flood defences still carry a residual risk of impact of floodingflood pro tdueect itoon overtopping structures . or Abreach,reas p thererotec temayd b yalso flo obed node fguaranteeences sti llof c amaintenancerry a residu inal rperpetuity.isk of floo dAreasing d ue to overtoppinthatg o rbenefit breach from, the rdefencese may a lsareo bannotatede no gua rseparately.antee of m aNoteinte nthatan cFloode in p Zoneerpe tumappingity. Ar isea sonly th areproducedt benefit f rowithinm de fences are annotated separately. Note that Flood Zone mapping is only reproduced within the settlement development the settlement development boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or boundary.0.5% Floo AEP.d Zo n Floode A – ZoneFluv iBal :– 11 iinn 1000100 y yearear oorr 0.1%1% A AEP.EP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood ZoFloodne m Zoneapp mappinging dat adata so sourceurce FEM FRAMSFEM FRAMS HistoricaHistoricall Floodi nFloodingg LaytownLa Recurring,ytown R Laytownecurrin gFeb, L 2002aytown Feb 2002 Alverno Heights, Laytown Recurring Alverno Heights, Laytown Recurring Comment The Flood Zones will not hinder future development and zoning Comment for newT developmenthe Flood Z inon areases w ofill highnot flood hind risker fucantu rbee avoided.develo pment Flood riskan dcan z oben imanagedng for n byew adopting devel othepm policiesent in set ar eoutas in o thef h igh Countyf Developmentlood risk ca Plan,n be the av recommendationsoided. of the Planning GuidelinesFlo oandd ranyisk containedcan be mwithinana gtheed FEM by FRAMS.adopting the policies Conclusion No SFRAse requiredt out in the County Development Plan, the Implementrec oFloodmm eRisknd aManagementtions of th epolicies Plan nfroming CDPGui dandeli nanyes and any FEM FRAMSconta recommendations.ined within the FEM FRAMS. Conclusion No SFRA required Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations.

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A.28 LongwoodA.28 LONGWOOD

SettleSettlementment Are Areaa 11.43 11.43Ha Ha ZoninZoningg wit hwithinin Fl oFloodod Z Zoneone AA and/or and/ B?or B? Yes Yes Area Areafor Fforur Furtherther A Assessmentssessment under und eCFRAMr CFR Aprogramme?M EasterEasternn CFR ACFRAMM Are Areaa fo rfor F uFurtherrther Assessment programme? Assessment

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA © OrdThenan Floodce S uZonerve ymapping Irelan hasd & been Gov eproducedrnmen tin o accordancef Ireland, withMea theth Planning2012/3 Guidelines1/CCMA and therefore ignores The Flotheod impact Zone mofa floodpping protectionhas been structures.produced inAreas acco protectedrdance w ibyth floodthe P ladefencesnning G ustillide carrylines a aresidualnd ther riskefor eof ignores the impactflooding of flood duepro tote covertoppingtion structu rore sbreach,. Are atheres pr otmayect ealsod b ybe f lonoo dguarantee defence sof s timaintenancell carry a re insi dperpetuity.ual risk o f fAreaslood ing due to overtothatppin benefitg or bre fromach, tdefenceshere ma yare a lsannotatedo be no gseparately.uarantee ofNote ma thatinte nFloodance Zonein p ermappingpetuity .is Aonlyrea sreproduced that bene fiwithint fro m defences are anthenot asettlementted separ adevelopmenttely. Note t boundary.hat Flood ZFloodone mZoneapp Ain –g Fluvial:is only 1r einp r100odu yearced orwi t1%hin AEP,the sTidal:ettle m1 inen 200t de yearvelo porm ent bounda0.5%ry. FAEP.lood FloodZone ZoneA – F Blu –v i1a lin: 11000 in 1 year00 y eora r0.1% or 1 %AEP. AEP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source Eastern CFRAM Flood Risk Review (PFRA) Flood Zone mapping data source Eastern CFRAM Flood Risk Review (PFRA) Historical Flooding Yes, some recent flooding of a housing estate to the south of the Historical Flooding settlementYes, boundary.some recent flooding of a housing estate to the south of the settlement boundary. Comment Development to the south is restricted by the River Blackwater Comment and itsD tributary.evelop m Thisen tsettlement to the s oisu anth Area is r eforst Furtherricted by the River AssessmentBlackw underater the an Easternd its tr CFRAMibutary and. T thehis flood sett lriskem ine nthist is an Area area will be defined in more detail on publication of the Eastern CFRAMfo rflood Fur thhazarder A smapping.sessm e nt under the Eastern CFRAM and the flood risk in this area will be defined in more detail It is recommended that flood risk and management options for this settlementon publ iarecat assessedion of th ine more Eas tdetailern CatF LAPRAM stage floo andd h aa zard reviewm ofa pthepi nlandg. use zoning carried out. FurtherIt reviewis rec followingommen dtheed publication that flo oofd theris kEastern and mCFRAManag ement flood ohazardption smapping for th iands s esubsequentttlement amanagementre assess eplans.d in more detail at

Conclusion SFRA LrequiredAP sta forge LAPand stage a review of the land use zoning carried out. Further review following the publication of the Eastern CFRAM flood hazard mapping and subsequent management plans. Conclusion SFRA required for LAP stage

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A.29 Maynooth Environs A.29 MAYNOOTH ENVIRONS Settlement Area 140.73 Ha ZoningSettlement within Fl oAreaod Zone A and/or B? Yes 140.73 Ha Area foZoningr Furt withinher A Floodsses sZonemen At and/orunde B?r CFRAM No Yes programAreame for? Further Assessment under CFRAM programme? No

© Ordna©n Ordnancece Surve Surveyy Irela Irelandnd & G &o vGovernmenternment o fof I rIreland,eland, MeathMeath 2012/31/CCMA 2012/31/CCMA The FlooThed Zo Floodne m Zoneappin mappingg has be hasen pbeenrodu producedced in ac inco accordancerdance wit hwith the the Pla Planningnning G uGuidelinesidelines a andnd t thereforeherefore ignoresignores the impact othef flo impactod pro ofte cfloodtion stprotectionructures . structures. Areas pr oAreastecte dprotected by flood byd efloodfence sdefences still car rstilly a carryresid au aresiduall risk o riskf flo ofo ding due to overtoppfloodinging or b redueac hto, tovertoppinghere may aorls obreach, be no thereguar anmayte ealso of mbea inont eguaranteenance in pofe rmaintenancepetuity. Ar inea sperpetuity. that ben efAreasit fro m defences are annothattate benefitd separ afromtely . defences Note th aaret Fannotatedlood Zon eseparately. mapping isNote on lythat re pFloodrodu cZoneed w itmappinghin the is s eonlyttle mreproducedent deve lowithinpme nt boundarythe. Fsettlementlood Zone developmentA – Fluvial: 1boundary. in 100 y eFloodar or Zone 1% AAE –P Fluvial:, Tidal: 1 1 in in 100 20 0year ye aorr o1%r 0 AEP,.5% Tidal:AEP. 1 F inlo o200d Z yearone orB – 1 in 1000 year or 00.5%.1% AAEP.EP. Flood Zone B – 1 in 1000 year or 0.1% AEP.

Flood ZFloodone Zonemap mappingping da datata s sourceource PFRAPFRA

HistoricHistoricalal Floo dFloodinging No No

CommeCommentnt The FloodThe Zones Floo dwill Z onotne hinders wil lfuture not hdevelopmentinder futu rande d zoningevelo pment for newan developmentd zoning f oinr areasnew ofd ehighve lfloodopm erisknt icann abere aavoided.s of h igh flood Flood rriskisk can ca nbe b managede avoid byed adopting. the policies set out in the CountyFloo dDevelopment risk can b Plane m andana thege drecommendations by adopting tofh ethe p olicies set Planningou tGuidelines. in the C o unty Development Plan and the Conclusion No SFRArec orequiredmmendations of the Planning Guidelines. Conclusion ImplementNo S FloodFRA Riskreq uManagementired policies from CDP Implement Flood Risk Management policies from CDP

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A.30 MORNINGTON A.30 Mornington Settlement Area 28.99 Ha Settlement Area 28.99 Ha Zoning within Flood Zone A and/or B? Yes Zoning within Flood Zone A and/or B? Yes Area for Further Assessment under CFRAM programme? Eastern CFRAM Area for Further Area for Further Assessment under CFRAM Eastern CFRAMAssessment Area for Further Assessment programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA The© Ordnance Flood Zone Survey mapping Ireland has been & producedGovernment in accordance of Ireland,with Meath the Planning 2012/31/CCMA Guidelines and therefore ignores the impactThe Flood of flood Zone protection mapping structures. has been produced Areas protected in accordance by flood defenceswith the stillPlanning carry aGuidelines residual risk and of therefore flooding due ignores to overtoppingthe impactor ofbreach, flood thereprotection may alsostructures. be no guarantee Areas protected of maintenance by flood in perpetudefencesity. still Areas carry that a benefitresidual fromrisk defencesof areflooding annotated due separately to overtopping. Note thator breach, Flood Zonethere mappingmay also is onlybe no reproduced guarantee withinof maintenance the settlement in perpetuity. development Areas boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 that benefit from defences are annotated separately. Note that Flood Zone mapping is only reproduced within year or 0.1% AEP. the settlement development boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or Flood0.5% ZoneAEP. Flood mapping Zone dataB – 1 in source 1000 year or 0.1%PFRA AEP. & JFlow Historical Flooding Mornington West Recurring Flood Zone mapping data source PFRA & JFlow Comment A large proportion of land lies within Flood Zone A Historical Flooding Morningtonhowever Westflood Recurring risk can be managed by adopting the Comment A largepolicies proportion set of out land in lies the withinCounty Flood Development Zone A however Plan and flood therisk recommendationscan be managed by ofadopting the Planning the policies Guidelines. set out in Conclusion the CountyNo SFRA Development required Plan and the recommendations of the Planning Guidelines. Implement Flood Risk Management policies from CDP Conclusion No SFRA required Implement Flood Risk Management policies from CDP

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A.31 MorningtonA.31 MORNINGTON East EAST Settlement Area 159.6 Ha Settlement Area 159.6 Ha Zoning within Flood Zone A and/or B? Yes Zoning within Flood Zone A and/or B? Yes Area for Further Assessment under CFRAM FEM FRAMS proAreagram form eFurther? Assessment under CFRAM programme? FEM FRAMS

© O©rd Ordnancenance Su rSurveyvey Ire Irelandland & &G oGovernmentvernment o fof Ir Ireland,eland, M Meatheath 2 2012/31/CCMA012/31/CCMA The TheFloo Floodd Zon eZone map mappingping has bhasee nbeen prod produceduced in ac inco raccordancedance with withthe P thelann Planninging Guid eGuidelineslines and t handere fthereforeore ignore ignoress the impathect oimpactf flood ofpr ofloodtectio nprotection structure sstructures.. Areas p r oAreastecte dprotected by flood dbyef efloodnces s tdefencesill carry a still res idcarryual rai skresidual of floo riskding ofd ue to overfloodingtopping o rdue br etoac hovertopping, there may ora lsbreach,o be no there guar anmaytee alsoof m beai nnote nguaranteeance in pe rofp etmaintenanceuity. Areas tinh atperpetuity. benefit fr o mAreas def ences are thatanno benefittated se pfromarat edefencesly. Note t hareat Fannotatedlood Zone separately.mapping is oNotenly rthatepro dFlooduced Zonewithi n mappingthe sett lisem onlyent reproduceddevelopmen t within bountheda rsettlementy. Flood Zo developmentne A – Fluvia l:boundary. 1 in 100 y Floodear or Zone1% A AE P–, Fluvial:Tidal: 1 1 i nin 2 10000 y yearear o orr 0 1%.5% AEP, AEP .Tidal: Floo 1d inZo 200ne B year – 1 iorn 1000 year or 0.1% AEP. 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source Mornington Flood Alleviation Study and FEM FRAMS Flood Zone mapping data source Mornington Flood Alleviation Study and FEM FRAMS Historical Flooding Mornington February 2002 and October 2011. Historical Flooding MorningtonMo Februaryrnington 2002/Bet tandyst oOctoberwn No v2011. 2000 Comment Mornington/BettystownA flood allevi aNovtion 2000 scheme has now been Comment A flood alleviationconstruc tschemeed in M hasorn inowngt obeenn an constructedd protects ina large Morningtonpr oandpo rprotectstion of tah largee urb proportionan area, ofas the ide urbanntifie darea, in the as identifiedfigu inre the ab ofigureve. T habove.e sc h eTheme scheme is awa isiti nawaitingg the the completionco ofm pa lesingletion pumpingof a sing stationle pum atp itheng timestat iofon going at th toe time press (Aprilof 2012).going to press (April 2012). A large proportionA large pofr othepo rsettlementtion of th elies se withinttlem eFloodnt lie Zoness with Ain Flood or B (necessarilyZones Aignoring or B ( thenec impactessari lofy ifloodgnori ndefences).g the im p Ita cist of recommendedflood thatdef ethenc esites). is I assessedt is reco minm moreend edetaild th aatt LAPthe site is stage, takingass eintosse accountd in mo there ddetailetai lpresented at LAP s tinag thee, tFloodaking into Alleviationa cStudycoun andt th eFEM de tFRAMS.ail pres e Thisnted will in considerthe Floo overalld Alle viation managementStud ofy floodand F riskEM inF RtheAM settlementS. This w andill c oassessnside rthe o verall residual risk in defended areas. management of flood risk in the settlement and Conclusion SFRA requiredasses ats tLAPhe rstage.esidu al risk in defended areas. Conclusion SFRA required at LAP stage.

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A.32 MoynaltyA.32 MOYNALTY

SettSettlementlement Ar eAreaa 30.7 30.7Ha Ha

ZoniZoningng wi twithinhin Fl oFloodod Z Zoneone A and/orand/o B?r B? Yes Yes

AreaArea fo forr FurtherFurth eAssessmentr Assess munderent CFRAMunde rprogramme? CFRAM No No programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA The ©Flo Ordnanceod Zone m Surveyapping Irelandhas be e&n Governmentproduced in ofac cIreland,ordance Meathwith t h2012/31/CCMAe Planning Guidelines and therefore ignores the impaThect o fFlood flood Zone prot emappingction str uhasctu rbeenes. producedAreas pro inte accordancected by floo withd de ftheenc Planninges still c aGuidelinesrry a resid andual rthereforeisk of flo oignoresding d ue to overttheopp impacting or b ofre afloodch, t hprotectionere may a lstructures.so be no g u aAreasrante eprotected of main tebyn afloodnce in defencesperpetui tstilly. Acarryreas at hresidualat bene riskfit fr oof m defences are afloodingnnotated duese ptoar aovertoppingtely. Note ort hbreach,at Floo thered Zo nemay m aalsopp inbeg inos oguaranteenly repro dofu cemaintenanced within t hine perpetuity.settlement dAreasevel opment bounthatdary benefit. Flood fromZone defencesA – Fluv iaarel: 1annotated in 100 y eseparately.ar or 1% A ENoteP, T thatidal: Flood1 in 2Zone00 y eamappingr or 0.5 is% onlyAEP reproduced. Flood Zo newithin B – 1 in 1000the yea settlementr or 0.1% A developmentEP. boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or Floo0.5%d Zo nAEP.e m Floodappi nZoneg d aBt a– 1s oinu 1000rce year or 0.1% AEP.JFlow

HistoFloodrica lZone Floo mappingding data source JFlow Moynalty Co Meath 18th Nov 2009 and recurring. Historical Flooding Moynalty Co Meath 18th Nov 2009 and recurring. Comment The Moynalty River restricts development to the Comment The Moynaltys Riverouth restrictsand e developmentast of the to s theett lsouthemen andt. eastA large of the settlement.prop oAr tlargeion proportionof the s ofet thetlem settlementent area area lie slies w ithin within Flood ZoneFloo dA. Z one A. Flood risk canF belo omanagedd risk cbya nadopting be m theana policiesged b sety aoutdo pint ing the the County Developmentpolicies se tPlan ou tand in thethe recommendations County Develo pofm theen t Plan Planning Guidelines. and the recommendations of the Planning Conclusion No SFRA requiredGuidelines. Conclusion Implement FloodNo SRiskFR AManagement required policies from CDP Implement Flood Risk Management policies from CDP

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A.33 NAVAN

A.3Settlement3 Navan Area 2154.6 Ha

ZoningSettlement within Flood Area Zone A and/or B? 2154.6 HaYes Zoning within Flood Zone A and/or B? Yes Area for Further Assessment under CFRAM programme? Eastern CFRAM Area for Further Area for Further Assessment under CFRAM Eastern CFRAAssessmentMArea for Further Assessment programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA © Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores the the impactimpact of of floodflood prot protectionection structures. structures. Areas protectedAreas protected by flood defencesby flood still defences carry a residual still riskcarry of a floodingresidual due risk to of floodingovertopping due to orovertopping breach, there or may breach, also be there no guarantee may also of maintenancebe no guarantee in perpetuity. of maintenance Areas that benefit in perpetuity. from defences Areas that benefitare annotated from separately.defences Noteare annotated that Flood Zone separately. mapping isNote only reproducedthat Flood within Zone the mapping settlement is developmentonly reproduced within boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 the settlementyear or 0.1% development AEP. boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source Eastern CFRAM Flood Risk Review (PFRA) & Swan Flood Zone mapping data source Eastern CFRAMFRA Model Flood Risk Review (PFRA) & Swan FRA Model Historical Flooding Numerous and significant history of flooding on the Historical Flooding Numerous and significant history of flooding on the Blackwater Blackwater River, River Boyne and Swann River. River, River Boyne and Swann River. Comment Navan town is located at the confluence between the Comment Navan townRiver is Blackwaterlocated at the and confluence the River Boyne. between the River BlackwaterThere and isthe a significantRiver Boyne. history of flooding and Navan has been included as an Area for Further Assessment There is a significant history of flooding and Navan has been in the Eastern CFRAMS. included as an Area for Further Assessment in the Eastern The Swan River has been subject to a flood relief CFRAMS. scheme that has undergone detailed design and is The Swannow River pending has been construc subjecttion to (2012). a flood The relief potential scheme area that has undergonebenefiting detailed from design the defence and is isnow included pending on theconstruction figure (2012). Theabove. potential area benefiting from the defence is included on the figureBased above. on the location of the rivers flowing through the town, and the flood history it is recommended Based on the location of the rivers flowing through the town, that flood risk and management option are assessed and the floodin more history detail it atis Developmentrecommended Plan thatstage. flood risk and management option are assessed in more detail at Development Further review is required following the publication of Plan stage.the Eastern CFRAM flood hazard mapping and Further reviewsubsequent is required management following plans.the publication of the Eastern Conclusion CFRAM floodSFRA requiredhazard mappingat Development and subsequent Plan stage management plans. Conclusion SFRA required at Development Plan stage

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A.34 NobberA.34 NOBBER

SSettlementettlement AreaArea 57.9 Ha 57.9 Ha Zoning within Flood Zone A and/or B? Yes Zoning within Flood Zone A and/or B? Yes Area for Further Assessment under CFRAM No pArearog rforam Furtherme? Assessment under CFRAM programme? No

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA T©h eOrdnance Flood Zon eSurvey mappin gIreland has be e&n Governmentproduced in ac cofor dIreland,ance wit hMeath the Pl a2012/31/CCMAnning Guidelines and therefore ignores the iThempa cFloodt of fl oZoneod pr omappingtection s thasruct ubeenres. producedAreas pro tinec taccordanceed by flood dwithefen cthees s Planningtill carry a Guidelines residual ris kand of fthereforelooding du eignores to overtopping or breach, there may also be no guarantee of maintenance in perpetuity. Areas that benefit from defences the impact of flood protection structures. Areas protected by flood defences still carry a residual risk of are annotated separately. Note that Flood Zone mapping is only reproduced within the settlement development bfloodingoundary. dueFloo tod Zovertoppingone A – Fluv iaorl: 1breach, in 100 thereyear or may1% alsoAEP , beTi dnoal: guarantee1 in 200 ye aofr ormaintenance 0.5% AEP. inFl operpetuity.od Zone B – 1Areas in 10 00 ythatear obenefitr 0.1% AfromEP. defences are annotated separately. Note that Flood Zone mapping is only reproduced within the settlement development boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or Flood Zone mapping data source JFlow 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Historical Flooding Dee Nobber Recurring Flood Zone mapping data source JFlow Dee Nobber Nov 2000 CHistoricalommen tFlooding Dee Nobber RecurringWithin the settlement boundary development is restricted to the north west. Dee Nobber Nov 2000 Further review of the land use zoning is Comment Within the settlementrequir eboundaryd. Flood development risk and ma isna restrictedgement o top ttheion s north west. will be assessed in more detail at LAP stage. Conclusion Further review ofSF theRA landrequ useired zoning at LA Pis srequired.tage Flood risk and management options will be assessed in more detail at LAP stage.

Conclusion SFRA required at LAP stage

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A6 Strategic Flood Risk Assessment for County Meath

A.35 Oldcastle A.35 OLDCASTLE Settlement Area 126.7 Ha Settlement Area 126.7 Ha Zoning within Flood Zone A and/or B? No Zoning within Flood Zone A and/or B? No Area for Further Assessment under CFRAM No Area for Further Assessment under CFRAM programme? No programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA © OrdnaThence Flood Surv Zoneey I rmappingeland & has Go beenvern producedment of in I raccordanceeland, Me withath the20 1Planning2/31/ CGuidelinesCMA and therefore ignores The Floodthe Zo nimpacte map ofp ifloodng ha sprotection been pr ostructures.duced in a cAreascord aprotectednce with tbyh eflood Plan ndefencesing Guid estilllin ecarrys an ad residualtherefo riskre ig ofn ores the impact of floodingflood pr oduetec ttoio novertopping structures .or breach,Areas pthererote ctmayed balsoy f lobeo dno d eguaranteefences s tiofll camaintenancerry a resid inua lperpetuity. risk of flo oAreasding due to overtoppinthatg o benefitr breac hfrom, the rdefencese may a lareso bannotatede no gua separately.rantee of m Noteaint ethatnan Floodce in pZoneerp etmappinguity. A isre aonlys t hreproducedat benefit frwithinom d efences are annottheate dsettlement separate ldevelopmenty. Note that boundary. Flood Zo n Floode ma pZoneping A i s– oFluvial:nly re p1r oind 100uce dyear wit orhi n1% th eAEP, set tTidal:leme 1n tin d 200eve lyearopm oren t boundary.0.5% Floo AEP.d Zo nFloode A – Zone Fluv Bia l–: 11 inin 1000 100 yearyear oror 0.1% 1% AAEP.EP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood ZoFloodne m Zoneapp mappinging dat dataa so sourceurce n/a n/a HistoricaHistoricall Flood iFloodingng StoreS Road,tore ROldcastleoad, O Recurringldcastle Recurring CommenCommentt No fluvialNo f lriskuvi aidentified.l risk ide OPWntif ibenefittinged. OPW lands ben emappingfitting lands indicates some coverage. Historic flooding records indicate recurringmap floodingping in dati cStoreates Streetsom -e a clikelyove rsurfaceage. Hwateristo rsource.ic flooding records indicate recurring flooding at Store Street - a Conclusion No SFRAlikel yrequired surfa ce water source. Implement Flood Risk Management policies from CDP Conclusion No SFRA required Implement Flood Risk Management policies from CDP

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A.36A.36 Rathcairn RATHCAIRN

SettlementSettlemen Areat Area 47.01 Ha 47.01 Ha ZoningZonin gwithin with iFloodn Floo Zoned Zo nAe and/orA and /B?or B? No No Area for Further Assessment under CFRAM No Area for Further Assessment under CFRAM programme? No programme?

Implement Flood Risk Management policies from CDP

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A6 Strategic Flood Risk Assessment for County Meath

A.37 RATHMOLYON A.37 Rathmolyon

SettlementSettlemen tArea Area 52.6 Ha 52.6 Ha ZoningZonin gwithin withi nFlood Floo Zoned Zon Ae and/orA and /B?or B? No No

AreaArea for fo Furtherr Furth eAssessmentr Assessmen undert und eCFRAMr CFRA Mprogramme? No No programme?

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Strategic Flood Risk Assessment for County Meath A6

A.38 RatoathA.38 RATOATH

SettlemSettlementent Area Area 540.7 H540.7a Ha ZoningZoning withi nwithin Floo dFlood Zon Zonee A a An dand/or/or B B?? Yes Yes

Area foArear Fu forrth Furtherer Ass eAssessmentssment un dunderer CF CFRAMRAM programme?FEM FRFEMAMS FRAMS programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA © OrdnTheanc Floode Sur vZoneey I rmappingeland & hasGo vbeenernm producedent of Ir einl aaccordancend, Meath with201 2the/3 1Planning/CCMA Guidelines and therefore ignores The Floothed Z impactone ma ofpp flooding ha sprotection been prod structures.uced in acc orAreasdanc eprotected with the Pbyla nfloodning G udefencesidelines astillnd tcarryhere fao rresiduale ignore risks the of impact ofloodingf flood p rdueotec totio novertopping structures. or A rbreach,eas pr otheretecte d mayby flalsoood dbee fenon ceguarantees still car ryof a maintenanceresidual risk inof fperpetuity.looding du e Areasto overtopthatping benefitor breac fromh, the rdefencese may al sareo b eannotated no guara nseparately.tee of mai n teNotenan cthate in Floodperpe tZoneuity. Amappingreas th aist bonlyene freproducedit from defe nwithinces are annotated separately. Note that Flood Zone mapping is only reproduced within the settlement development the settlement development boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. year or 0.1% AEP.

Flood FloodZone Zonemap pmappinging dat adata so usourcerce FEM FRAMSFEM &FR PFRAAMS & PFRA Historical Flooding No Historical Flooding No Comment The Flood Zones will not hinder future Comment The Flood Zones will not hinder future development and zoning development and zoning for new development in for new development in areas of high flood risk can be avoided. Flood riska rcaneas be of managed high flo obyd adoptingrisk can anybe ameasuresvoided. outlinedFlood in the FEMr FRAMSisk can andbe mpoliciesanage setd b outy a indo thepti nCountyg any Developmentmeasures Plan ando theutl irecommendationsned in the FEM FofR AtheM SPlanning and po Guidelines.licies set o ut in the County Development Plan and the Conclusion No SFRAr erequired.comme ndations of the Planning Guidelines. Conclusion ImplementNo Flood SFRA Risk req Managementuired. policies from CDP and any FEM FRAMS recommendations. Implement Flood Risk Management policies from CDP and any FEM FRAMS recommendations.

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A6 Strategic Flood Risk Assessment for County Meath

A.39 SlaneA.39 SLANE

SettleSettlementment Are Areaa 208.3 Ha 208.3 Ha Zoning within Flood Zone A and/or B? Yes Zoning within Flood Zone A and/or B? Yes Area for Further Assessment under CFRAM No Area for Further Assessment under CFRAM programme? No programme?

© Ordnance Survey Ireland & Government of Ireland, Meath 2012/31/CCMA © OrdThena nFloodce S uZonervey mapping Ireland has & Gbeenove rproducednment o inf I accordancereland, Me withath the201 Planning2/31/C CGuidelinesMA and therefore ignores The Fltheood impact Zone mofa pfloodping hprotectionas been p rstructures.oduced in aAreasccord aprotectednce with tbyhe floodPlann indefencesg Guide lstillines carryand at hresidualerefore riskigno rof es the impacfloodingt of flood duepro ttoec tovertoppingion structur eors . breach, Areas there prote ctmayed balsoy f lobeo dno d eguaranteefences sti llof c armaintenancery a residua inl r iperpetuity.sk of flood inAreasg du e to overtothatppin benefitg or bre fromach, thdefencesere may areals oannotated be no gu aseparately.rantee of mNoteaint ethatnan cFloode in pZoneerpe tumappingity. Are isas onlytha treproduced benefit fro mwithin defe nces are anthenot settlementated separa developmenttely. Note th aboundary.t Flood Z o Floodne ma Zonepping A i s– oFluvial:nly rep 1ro ind u100ced yearwith orin t1%he sAEP,ettle Tidal:ment 1d einv e200lop myearent or bound0.5%ary. FAEP.lood FloodZone AZone – F luBv –ia 1l: in1 1000in 10 0year yea orr o 0.1%r 1% AAEP.EP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. FloodFlood Zon Zonee ma mappingpping d dataata ssourceource EasternEast CFRAMern CF RFloodAM FRiskloo dReview Risk R(PFRA)eview (PFRA) HistoHistoricalrical Flo oFloodingding Patrick’sPatri cTerrace,k's Te rSlane/N51race, Sla nRecurring,e/N51 R Boyneecurri nSlaneg, B Novoyn e2002, Slan e Nov Boyne20 0 Drogheda2, Boyne to DSlanerogh Recurring,eda to S lBoyneane R Slaneecurr Febing, 1990. Boyne Slane Comment DevelopmentFeb 1990 is. restricted to the south and west by the River Comment BoyneDe vandelo tributarypment iands re byst relevatedicted to ground the s o(theuth Hill an ofd Slane)west btoy the the Rnorth.iver B oyne and tributary and by elevated ground (the TheH Floodill of ZonesSlane will) to not th ehinder nort futureh. development and zoningTh ein F areaslood ofZ ohighnes flood will nriskot hcanin dbeer avoided.future dFloodevel oriskpm ent and can be managed by adopting the policies set out in the County Developmentzoning in Plan are aands o thef h irecommendationsgh flood risk ca nof bthee aPlanning.voided. Flood risk can be managed by adopting the policies set out in Conclusion No tSFRAhe C orequired.unty D e velopment Plan and the recommendations Implementof the PFloodlann Risking. Management policies from CDP. Conclusion No SFRA required. Implement Flood Risk Management policies from CDP.

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Strategic Flood Risk Assessment for County Meath A6

A.40A.40 Stamullen STAMULLEN

SettlementSettlem eAreant Area 186.6 186.6Ha Ha ZoningZon iwithinng wi tFloodhin F lZoneood ZAo and/orne A a B?nd/or B? Yes Yes

AreaA rforea Furtherfor Fur tAssessmenther Assessm underent u CFRAMnder CF programme?RAM FEM FRFEMAM SFRAMS programme?

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A6 Strategic Flood Risk Assessment for County Meath

A.41 Summerhill A.41 SUMMERHILL Settlement Area 97.22 Ha Settlement Area 97.22 Ha Zoning within Flood Zone A and/or B? No Zoning within Flood Zone A and/or B? No Area for Further Assessment under CFRAM No progrAreaamm fore? Further Assessment under CFRAM programme? No

© Ord©n aOrdnancence Surv Surveyey Irel aIrelandnd & G &o vGovernmenternment of ofIr eIreland,land, M Meatheath 22012/31/CCMA012/31/CCMA The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores The Flood Zone mapping has been produced in accordance with the Planning Guidelines and therefore ignores the the impact of flood protection structures. Areas protected by flood defences still carry a residual risk of impact of flood protection structures. Areas protected by flood defences still carry a residual risk of flooding due to overtofloodingpping or bduerea toch ,overtopping there may aorls obreach, be no thereguara nmaytee alsoof m beai nnote nguaranteeance in p eofrp emaintenancetuity. Areas in t hperpetuity.at benefit f roAreasm d efences are anthatnota benefitted sep afromrate lydefences. Note t hareat Fannotatedlood Zone separately.mapping i s oNotenly thatrepr oFloodduce dZone wit hinmapping the se istt leonlyme nreproducedt developm ewithinnt boundtheary .settlement Flood Zon developmente A – Fluvial: boundary.1 in 100 y eFloodar or Zone1% A AEP –, Fluvial:Tidal: 1 1 i nin 210000 yyearear oorr 1%0.5% AEP, AE PTidal:. Flo 1o din Z 200one yearB – 1or i n 1000 year o0.5%r 0.1% AEP. AE P Flood. Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source n/a Flood Zone mapping data source n/a Historical Flooding No Historical Flooding No Comment No fluvial risk identified and no historic records of Comment No fluvial risk identified and no historic records of flooding. flooding. ConcConclusionlusion No SFRANo Srequired.FRA re q uired. ImplementImple Floodmen tRisk Flo Managementod Risk Man policiesageme fromnt p oCDP.licies from CDP.

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Strategic Flood Risk Assessment for County Meath A6

A.42 TRIM A.42 Trim Settlement Area 790.9 Ha Settlement Area 720.9 Ha Zoning within Flood Zone A and/or B? Yes Zoning within Flood Zone A and/or B? Yes AreaArea for for Further Further Assessment Assessment under under CFRAM CFRAM programme?Eastern CFRAMA Easternrea CFRAM for F urtherArea forA ssessmentFurther programme? Assessment

©© Ordnance Ordnance Survey Survey Ireland & Government of of Ireland, Ireland, Meath Meath 2012/31/CCMA 2012/31/CCMA TheThe Flood Flood Zone mappingmapping has has been been produced producedin accordance in accordance with thewith Planning the Planning Guidelines Guidelines and therefore and therefore ignores the ignores theimpact impact of flood of flood protection protection structures. structures. Areas protected Areas protected by flood defencesby flood still defences carry a residual still carry risk a ofresidual flooding risk due of to floodingovertopping due or to breach, overtopping there may or alsobreach, be nothere guarantee may also of maintenbe no anceguarantee in perpetuity. of maintenance Areas that in benefit perpetuity. from defences Areas thatare benefit annotated from separately. defencesNote are that annotated Flood Zone separately. mapping is Note only reproducedthat Flood withinZone themapping settlement is only development reproduced within boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or 0.5% AEP. Flood Zone B – 1 in 1000 the settlement development boundary. Flood Zone A – Fluvial: 1 in 100 year or 1% AEP, Tidal: 1 in 200 year or year or 0.1% AEP. 0.5% AEP. Flood Zone B – 1 in 1000 year or 0.1% AEP. Flood Zone mapping data source Eastern CFRAM Flood Risk Review (PFRA) FloodHistorical Zone Floodingmapping data source EasternBoyne CFRAM Trim, Flood1965, Risk 1978, Review1993 (PFRA), 1995, 2000, 2002, 2005, Historical Flooding Boyne2008. Trim, 1965, 1978, 1993, 1995, 2000, 2002, 2005, 2008. Navangate Street, Trim Recurring. Navangate Street, Trim Recurring. Comment Trim is located on the banks of the River Boyne. Comment Trim Thereis located is a on significant the banks history of the River of flooding Boyne. and Trim has Therebeen is a significant included as history an Area of forfloodingFurther andA ssessmentTrim has beenin the includedEastern as anCFRAM Area for study. Further Based Assessment on the locationin the Eastern of the river CFRAMflowing study. through Based theon the town, location and theof the flood river history flowing it isthrough the town,recommended and the flood that history flood riskit is andrecommended management that option flood risk andare management assessed in moreoption detail are assessed at Development in more detail Plan stage.at DevelopmentFurther review Plan stage. is required following the publication of the FurtherEastern reviewCFRAM is required flood following hazard mappingthe publication and subsequent of the Eastern CFRAMmanagement flood hazard plans. mapping and subsequent management Conclusion plans.SFRA required at Development Plan stage

Conclusion SFRA required at Development Plan stage

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