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Rossendale Borough Council Level 1 Strategic Flood Risk Assessment Final Report May 2009

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Rossendale Borough Council Level 1 Strategic Flood Risk Assessment Final Report May 2009 Rossendale Borough Council Level 1 Strategic Flood Risk Assessment Final Report May 2009 Prepared for: Rossendale Borough Council Strategic Flood Risk Assessment Revision Schedule Rossendale Borough Council Level 1 Strategic Flood Risk Assessment Final Report May 2009 Rev Date Details Prepared by Reviewed by Approved by D01 24/10/2008 Interim Draft Helen Burton Andrew Woodliffe David Dales Assistant Flood Risk Senior Flood Risk Director Specialist Specialist Fay Tivey Assistant Flood Risk Specialist Lyndsey Regan Planner D02 20/11/2008 Final Draft Fay Tivey Andrew Woodliffe David Dales Assistant Flood Risk Senior Flood Risk Director Specialist Specialist F01 27/02/2009 Final Fay Tivey Andrew Woodliffe Jon Robinson Assistant Flood Risk Senior Flood Risk Associate Director Specialist Specialist F02 29/05/2009 Final v2 Fay Tivey Andrew Woodliffe Jon Robinson Assistant Flood Risk Senior Flood Risk Associate Director Specialist Specialist Scott Wilson Mansfield i-Centre Hamilton Way Mansfield Nottinghamshire This document has been prepared in accordance with the scope of Scott Wilson's appointment w ith its client and is subject to the terms of that appointment. It is addressed NG18 5BR to and for the sole use and reliance of Scott Wilson's client. Scott Wilson accepts no liability for any use of this document other than by its client and only for the purposes, stated in the document, for which it was prepared and provided. No person other than the Tel +44 (0)1623 600660 client may copy (in whole or in part) use or rely on the contents of this document, without the prior written permission of the Company Secretary of Scott Wilson Ltd. Any advice, Fax +44 (0)1623 600661 opinions, or recommendations within this document should be read and relied upon only in the context of the document as a whole. The contents of this document are not to be construed as providing legal, business or tax advice or opinion. © Scott Wilson Group PLC 2008 www.scottwilson.com Rossendale Borough Council Strategic Flood Risk Assessment Table of Contents Abbreviations .............................................................................................. iv Executive Summary .................................................................................... vi 1 Introduction........................................................................................1 1.1 Background.....................................................................................................................1 1.2 The Rossendale SFRA ...................................................................................................1 1.3 The SFRA Structure........................................................................................................2 1.4 The SFRA Aims & Purpose.............................................................................................3 2 Rossendale Borough Council ............................................................4 2.1 Study Area......................................................................................................................4 2.2 Administrative Bodies......................................................................................................5 2.3 Historical Flooding ..........................................................................................................6 2.4 Flood Sources.................................................................................................................6 2.5 Flood Risk Management ...............................................................................................10 2.6 Flooding Mechanisms ...................................................................................................11 2.7 Flood Risk Statistics......................................................................................................12 2.8 Potential Development Pressures .................................................................................13 2.9 Climate Change and Future Flood Risk ........................................................................15 3 Policy Review ..................................................................................18 3.1 Planning Policy .............................................................................................................19 3.2 European Policy............................................................................................................19 3.3 National Planning Policy ...............................................................................................21 3.4 Regional Planning Policy ..............................................................................................24 3.5 Local Planning Policy....................................................................................................25 3.6 Non-Statutory National Planning Documents ................................................................27 3.7 Catchment Flood Management Plans ...........................................................................29 3.8 Flood Risk.....................................................................................................................31 3.9 Sustainable Drainage Systems .....................................................................................31 3.10 Water Environment .......................................................................................................32 4 Level 1 SFRA ..................................................................................34 4.1 Objective.......................................................................................................................34 4.2 Tasks ............................................................................................................................34 4.3 Stakeholders.................................................................................................................34 Level 1 SFRA ii May 2009 Rossendale Borough Council Strategic Flood Risk Assessment 4.4 Data / Information Collected..........................................................................................35 4.5 GIS, Flood Mapping and Application .............................................................................36 4.6 Flood Risk Review Summary ........................................................................................40 5 The Sequential Test ........................................................................41 5.1 The Sequential Approach..............................................................................................41 5.2 Using the SFRA to Apply the Sequential Test ...............................................................42 5.3 Recommended Stages for Application of the Sequential Test.......................................48 5.4 Using the SFRA Maps, Data and GIS Layers................................................................49 6 Site Specific Flood Risk Assessment Guidance...............................51 6.1 Introduction...................................................................................................................51 6.2 Flood Risk Assessment Guidance.................................................................................52 6.3 Residual Risk Management ..........................................................................................54 7 Recommendations for Level 2 SFRAs.............................................58 7.1 What is a Level 2 SFRA? ..............................................................................................58 7.2 Level 2 SFRA Approach................................................................................................58 7.3 RBC Level 2 SFRA Requirements ................................................................................59 References......................................................................................60 Appendix A - Historical Flood Events Appendix B - SFRA Mapping Appendix C - CFMP Policy Units Appendix D - SuDS Map and Review Appendix E - Data Register Appendix F - Contacts Appendix G - GIS Data Appendix H - Groundwater Vulnerability and Geology Mapping Appendix I - SFRA Maintenance and Update Appendix J - SFRA Version Register Level 1 SFRA iii May 2009 Rossendale Borough Council Strategic Flood Risk Assessment Abbreviations AA Appropriate Assessment AAP Area Action Plan ABI Association of British Insurers AMR Annual Monitoring Report ASCCUE Adaptation Strategies for Climate Change in the Urban Environment BHS British Hydrological Society BW British Waterways CAMS Catchment Abstraction Management Strategy CBHE Chronology of British Hydrological Events CFMP Catchment Flood Management Plan CLG Communities and Local Government DEFRA Department for Environment, Food and Rural Affairs DPD Development Plan Document EA Environment Agency EU European Union FRA Flood Risk Assessment FZ Flood Zone GIS Geographical Information System HA Highways Agency HMA Housing Market Area HMSO Her Majesty’s Stationary Office LCC Lancashire County Council LDD Local Development Document LDF Local Development Framework LDS Local Development Scheme LP Local Plan LPA Local Planning Authority LSPP24 Local Structure Plan Policy 24: Flood Risk MDSF Modelling and Decision Support Framework MoD Ministry of Defence OFWAT Office of Water Services PCPA Planning and Compulsory Purchase Act 2004 PDL Previously Developed Land PPG Planning Policy Guidance Level 1 SFRA iv May 2009 Rossendale Borough Council Strategic Flood Risk Assessment
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