Newport City Council Newport Local Flood Risk Management Flood Risk Management Plan Issue | 14 December 2015 This report takes into account the particular instructions and requirements of our client. It is not intended for and should not be relied upon by any third party and no responsibility is undertaken to any third party. Job number 244494-00 4 Pierhead Street Capital Waterside Cardiff CF10 4QP United Kingdom www.arup.com Document Verification Job title Newport Local Flood Risk Management Job number 244494-00 Document title Flood Risk Management Plan File reference 4-50 Document ref Revision Date Filename Newport FRMP Draft Report.docx Draft 1 17 Jul Description First draft, circulated for comment. 2015 Prepared by Checked by Approved by Name Jenna Beckett Robin Campbell David Hetherington Signature Draft 2 9 Oct Filename Newport FRMP Draft Report.docx 2015 Description Updated Section 7 onwards, and additional information provided by Newport City Council for Sections 1 – 6, draft circulated for comment. Prepared by Checked by Approved by Name Rosemary Cripps Robin Campbell Catherine Wenger Signature Draft 3 9 Oct Filename Newport FRMP Draft Report Draft 3.docx 2015 Description Updated to reflect Newport City Council’s and Dŵr Cymru Welsh Water’s comments. Prepared by Checked by Approved by Name Rosemary Cripps Robin Campbell Catherine Wenger Signature Issue 14 Dec Filename Newport FRMP Draft Report_Issue for Consultation.docx 2015 Description Issue for stakeholder consultation Prepared by Checked by Approved by Name Rosemary Cripps Robin Campbell Catherine Wenger Signature Issue Document Verification with Document | Issue | 14 December 2015 J:\244000\244494-00\4 INTERNAL PROJECT DATA\4-50 REPORTS\NEWPORT FRMP DRAFT REPORT_ISSUE FOR CONSULTATION.DOCX Newport City Council Newport Local Flood Risk Management Flood Risk Management Plan Contents Page List of Acronyms 5 Synopsis 6 1 Introduction 7 2 Purpose of Flood Risk Management Plans in managing flood risk 8 2.1 What is a Flood Risk Management Plan? 8 2.2 What is included in this Plan? 8 2.3 Legislative Context 10 3 Study area 14 3.1 Administrative area 14 3.2 Local flood risk in Newport 21 3.3 Approach to high-level costing of measures 25 4 How Newport City Council currently manages flood risk 26 4.2 How Newport City Council prioritises their work 29 4.3 Who Newport City Council works with to manage flood risk 30 4.4 How this FRMP has been coordinated 31 4.5 Measures already underway to manage flood risk 32 5 Coordination with the Severn River Basin Management Plans 34 6 Newport Flood Risk Management Plan objectives 38 7 How Newport City Council will manage flood risk at a local level 40 7.1 Overview of local flood risk 40 7.2 Common local flood risk management measures 51 7.3 Allt-Yr-Yn Ward 56 7.4 Alway Ward 61 7.5 Beechwood Ward 66 7.6 Bettws Ward 71 7.7 Caerleon Ward 76 7.8 Gaer Ward 81 7.9 Graig Ward 86 7.10 Langstone Ward 91 7.11 Liswerry Ward 97 7.12 Llanwern Ward 102 7.13 Malpas Ward 107 | Issue | 14 December 2015 J:\244000\244494-00\4 INTERNAL PROJECT DATA\4-50 REPORTS\NEWPORT FRMP DRAFT REPORT_ISSUE FOR CONSULTATION.DOCX Newport City Council Newport Local Flood Risk Management Flood Risk Management Plan 7.14 Marshfield Ward 112 7.15 Pillgwenlly Ward 117 7.16 Ringland Ward 121 7.17 Rogerstone Ward 126 7.18 Shaftesbury Ward 131 7.19 St Julians Ward 137 7.20 Stow Hill Ward 142 7.21 Tredegar Park Ward 147 7.22 Victoria Ward 152 8 Implementation and Delivery 157 8.1 Summary of Measures 157 8.2 Implementation Programme 157 8.3 Measure justification 158 8.4 Funding for Local Flood Risk Management 158 8.5 Environmental Influences on Measures 161 9 Public Consultation 164 9.1 Consultation on the Draft Local Flood Risk Management Plan 164 9.2 Further Consultation 165 10 Monitoring and review 166 Tables Table 1 – Summary of relevant plans and lead RMAs Table 2 – Definition of ‘non-residential’ and ‘essential service’ property type Table 2 - Total counts of features in NCC Table 3 - NCC Local Flood Risk Management Strategy Measures Table 4 - Table outlining the primary roles of RMAs operating within Newport. Table 5 – Definitions of measures, used for reporting within the Floods Directive. Table 6 – Mapping interdependencies between Management Plan measures. Table 7 - Objectives of the National FRM Strategy and the NCC LFRMS Table 8 – Top five ranked wards, by proportion of properties at predicted flood risk (depth>0.2m) Table 9 – Summary of the predicted risk from surface water to a range of receptors. Table 10 - Estimated residents in areas at risk of flooding depth >0.0m Table 11 - Residential Properties at risk of internal flooding depth >0.2m Table 12 – Total features at high risk of surface water flooding (greater than a 1 in 30 chance of flooding in any year) | Issue | 14 December 2015 J:\244000\244494-00\4 INTERNAL PROJECT DATA\4-50 REPORTS\NEWPORT FRMP DRAFT REPORT_ISSUE FOR CONSULTATION.DOCX Newport City Council Newport Local Flood Risk Management Flood Risk Management Plan Table 13 - Total features at medium risk of surface water flooding (between 1 in 30 and 1 in 100 chance of flooding in any year) Table 14 - Total features at low risk of surface water flooding (between 1 in 100 and 1 in 1000 chance of flooding in any year) Table 15 – Summary of Borough-wide Measures Table 16 – Recorded historic local flooding in Allt-yr-yn Table 17 – Flood risk map counts for Allt-yr-yn Table 18 – Local flood risk management measures for Allt-yr-yn Table 19 – Recorded historic local flooding in Alway Table 20 – Flood Risk Map counts for Alway Table 21 - Local Flood Risk Management measures for Alway Table 22 – Recorded historic local flood events in Beechwood Table 23 – Flood Risk Mapping counts for Beechwood Table 24 - Local Flood Risk Management measures for Beechwood Table 25 – Recorded historic flooding in Bettws Table 26 – Flood Risk Map counts for Bettws Table 27 – Local Flood Risk Management measures for Bettws. Table 28 – Recorded historic ordinary watercourse flooding in Caerleon Table 29 – Recorded historic surface water flooding in Caerleon Table 30 - Flood Risk Map counts for Caerleon Table 31 - Local Flood Risk Management measures for Caerleon Table 32 - Flood Risk Map counts for Gaer Table 33 – Local Flood Risk Management measures identified for Gaer Table 34 - Flood Risk Map counts for Graig Table 35 – Local flood risk management measures for Graig Table 36 – Flood Risk Map counts for Langstone. Table 37 – Local flood risk management measures for Langstone. Table 38 – Flood Risk Map counts for Liswerry Table 39 – Local Flood Risk Management measures for Liswerry Table 40 – Flood Risk Map counts for Llanwern Table 41 – Local Flood Risk Management measures for Llandwern Table 42 – Flood Risk Map counts for Malpas Table 43 – Local Flood Risk Management measures for Malpas Table 44 – Flood Risk Map counts for Marshfield. Table 45 – Local Flood Risk Management measures for Marshfield Table 46 – Flood Risk Map counts for Pillgwenlly Table 47 – Local Flood Risk Management measures for Pillgwenlly Table 48 – Flood Risk Map counts for Ringland Table 49 – Local Flood Risk Management measures for Ringland Table 50 – Flood Risk Map counts for Rogerstone Table 51 – Local Flood Risk Management measures for Rogerstone Table 52 – Flood Risk Map counts for Shaftesbury Table 53 – Local Flood Risk Management measures for Shaftesbury | Issue | 14 December 2015 J:\244000\244494-00\4 INTERNAL PROJECT DATA\4-50 REPORTS\NEWPORT FRMP DRAFT REPORT_ISSUE FOR CONSULTATION.DOCX Newport City Council Newport Local Flood Risk Management Flood Risk Management Plan Table 54 – Flood Risk Map counts for St Julians Table 55 – Local Flood Risk Management measures for St Julians Table 56 – Flood Risk Map counts for Stow Hill Table 57 – Local Flood Risk Management measures for Stow Hill Table 58 – Flood Risk Map counts for Tredegar Park Table 59 – Local Flood Risk Management measures for Tredegar Park Table 60 – Flood Risk Map counts for Victoria Table 61 – Local Flood Risk Management measures for Victoria Table 62 – Summary of local flood risk management proposed measures across NCC Appendices Appendix A Historic Local Flood Events | Issue | 14 December 2015 J:\244000\244494-00\4 INTERNAL PROJECT DATA\4-50 REPORTS\NEWPORT FRMP DRAFT REPORT_ISSUE FOR CONSULTATION.DOCX Newport City Council Newport Local Flood Risk Management Flood Risk Management Plan List of Acronyms CIL Community Infrastructure Levy DCWW Dŵr Cymru Welsh Water Defra Department for Environment, Food and Rural Affairs EC European Commission ERDF European Regional Development Fund EU European Union FCERM Flood and Coastal Erosion Risk Management FDGiA Flood Defence Grant in Aid FWMA Flood and Water Management Act 2010 FTE Full Time Equivalent GIS Geographical Information Systems HRA Habitat Regulations Assessment IDB Internal Drainage Board LFRMP Local Flood Risk Management Plan LFRMS Local Flood Risk Management Strategy LLFA Lead Local Flood Authority LRF Local Resilience Forum NCC Newport City Council NFM Natural Flood Management PFRA Preliminary Flood Risk Assessment RBMP River Basin Management Plan RMA Risk Management Authorities SEA Strategic Environmental Assessment SFCA Strategic Flood Consequences Assessment SMP Shoreline Management Plan TAN Technical Advice Note WCMC Wales Coastal Monitoring Centre WFD Water Framework Directive | Issue | 14 December 2015 Page 5 J:\244000\244494-00\4 INTERNAL PROJECT DATA\4-50 REPORTS\NEWPORT FRMP DRAFT REPORT_ISSUE FOR CONSULTATION.DOCX Newport City Council Newport Local Flood Risk Management Flood Risk Management Plan Synopsis Newport City Council (NCC) is a designated Lead Local Flood Authority (LLFA) under the Flood and Water Management Act (FWMA) 2010.