Kirklees Surface Water Management Plan Is It Likely to Result In
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Name of meeting: Cabinet Date: 1 February 2011 Title of report: Kirklees Surface Water Management Plan Is it likely to result in spending or No saving £250k or more, or to have a significant effect on two or more electoral wards? Is it in the Council’s Forward Plan? No Is it eligible for “call in” by Scrutiny? Yes Cabinet member portfolio Cllr McBride Electoral wards affected: All Ward councillors consulted: None Public or private: Public 1. Purpose of report To seek approval to publish and implement the Kirklees Surface Water Management Plan. 2. Key points 2.1. Background Recent legislation around flood risk management, The Flood and Water Management Act 2009 and The Flood Risk Regulations 2010, place new responsibilities on Local Authorities to understand, coordinate and manage local flood risk. Targeted funding has been made available by Defra to encourage those Councils at higher risk of flooding, to start preparing plans and strategies to manage the risk. Kirklees was one of 77 Councils awarded a grant to prepare a Surface Water Management Plan (SWMP) for their district. The SWMP is now complete and will form the evidence base for future flood management plans required under the Flood Risk Regulations. The SWMP is attached in Appendix 1. 2.2. Options National guidance on preparing SWMPs is available but there is discretion within the guidance to take an approach that reflects the availability and quality of base data and the level of current understanding of flood risk. Kirklees, historically, has invested few resources in managing local flood risk and consequently, the Kirklees SWMP is Strategic, rather than Detailed, in level and gives a broad summary of flood risk across the whole district. CAB-10-045-S Note: The Council only has responsibility for managing risk from surface water flooding ie flooding from sewers, drains, run-off from land and smaller watercourses that occurs as a result of heavy rainfall. Flooding from designated “main rivers”, fluvial flooding, continues to be the responsibility of the Environment Agency. 2.3. Objectives of the SWMP The SWMP provides an evidenced statement on the Council’s current understanding of surface water flood risk. It is an information tool that will benefit – Council officers in offering constructive advice to developers and planners Local communities in understanding the size and nature of the flood risk in their centres Residents and businesses in understanding the risk to their land and property and providing the tools and knowledge to help them to reduce the risk The Councils Strategic Drainage team in determining priorities for further detailed investigation of areas of higher flood risk The Councils Strategic Drainage team in developing the evidence base needed for the identification of Flood Risk Areas required by the Flood Risk Regulations 2.4. The SWMP Action Plan The SWMP uses available information on historical flooding, vulnerable infrastructure and future, predicted flooding, to produce a consistent assessment of surface water flood risk across the whole district. The district has been divided into around 1600, 500x500m squares, and each square has been allocated a flood risk score based on the above criteria. The Action Plan will use this information to further improve our knowledge of local flood risk, develop a suite of realistic flood mitigation measures for priority areas and maximise the benefit from Partner work programmes. The summary Action Plan is included in Appendix 2. 3. Implications for the Council The SWMP provides the first response from the Council on how it proposes to discharge its new responsibilities for local flood risk management. will direct better use of limited Council resources and provide information for communities to allow them to be in more control of managing the flood risk to their properties. is a direct response to the adaptation measures required to manage the increasing flood risk from severe rainfall events resulting from climate change will help inform decisions made on other Council Plans, in particular, the LDF and the Highways Capital Plan. There are sensitivities around the information in the SWMP, particularly around associating residential and commercial properties with flood risk. The Council needs to manage any concerns raised, explaining the context of the flood risk where necessary. For these reasons, it is recommended that the SWMP be CAB-10-045-S published on the Councils website and a low-key, Area-Committee based introduction of the SWMP be carried out. 4. Consultees and their opinions The SWMP is the result of a partnership between the Council, Yorkshire Water and the Environment Agency. No wider consultation on the plan has been carried out. Legal Services and the Councils Risk and Insurance Manager have been consulted on appropriate wording in the Plan to explicitly state the Councils responsibilities under the Plan. 5. Next steps The SWMP will be used to support the Preliminary Flood Risk Assessment required under the Flood Risk Regulations, to be completed by June 2011. In accordance with the SWMP, it is proposed that an annual progress update on the Action Plan be brought to future Cabinets. 6. Officer recommendations and reasons That the Surface Water Management Plan be approved and published on the Councils website. 7. Cabinet portfolio holder recommendation The officer recommendations are supported. 8. Contact officer and relevant papers Tom Ghee, Strategic Drainage Direct Dial: 01484 225377 Email: [email protected] 9. Head of Service Jacqui Gedman, Assistant Director, Investment and Regeneration Service CAB-10-045-S 2011 Kirklees Surface Water Management Plan An evidenced statement on the surface water flood risk in Kirklees and a delivery plan for reduction of the risk across the district Kirklees Council 1/2/2011 Kirklees Surface Water Management Plan Leave blank for back to back printing 2 Kirklees Council + Environment Agency + Yorkshire Water Kirklees Surface Water Management Plan Acknowledgements This report follows the guidelines set down in the “Surface Water Management Plan Technical Guidance” published March 2010 by Defra. The Integrated Urban Drainage (IUD) pilot projects carried out to test and inform the guidance document, have been a useful resource in determining a practical approach to produce an effective SWMP for Kirklees. In particular, the plans produced by Richmond and Warrington have suggested processes that have influenced and guided the Kirklees SWMP. Use of the Information in the Report As Lead Local Flood Authority (LLFA), Kirklees Council has a duty to develop, maintain, apply and monitor a strategy for local flood risk management. The LLFA must specify objectives to manage flood risk and suggest measures to achieve those objectives. The LLFA has a responsibility to consider the flood risk management functions that it may exercise to reduce risk. In support of the aim of a general reduction of flood risk across the district, the Council will prioritise investigations and works identified in this Plan to the best of its abilities, based on perceived and evidenced risk and within limited resources. The indications of flood risk in the report are high level and based on incomplete information. A level of subjectivity has been used in assessing relative flood risk and the results will be used to prioritise future, more robust, investigations and assessments which will, hopefully, lead to reliable measures of risk. Consequently, it is not appropriate to apply the information and recommendations in this report at a local, property level. 3 Kirklees Council + Environment Agency + Yorkshire Water Kirklees Surface Water Management Plan Leave blank for back to back printing 4 Kirklees Council + Environment Agency + Yorkshire Water Kirklees Surface Water Management Plan Contents Acknowledgements ................................................................................................................. 3 1 Executive Summary ......................................................................................................... 7 2 Glossary ......................................................................................................................... 11 3 Introduction .................................................................................................................... 15 3.1 Surface Water Management Plans in Context ....................................................... 15 3.2 How does the SWMP fit with other policies? .......................................................... 16 3.3 Drivers for a systematic approach to Flood Risk Management (FRM) ................... 19 3.4 What is a Surface Water Management Plan? ........................................................ 20 3.5 What is Surface Water Flooding? ........................................................................... 20 3.6 What are the factors that cause and influence surface water flooding? ................. 21 3.7 The Interaction between Surface Water Flooding and Fluvial (River) Flooding ..... 22 4 The Study Area for the SWMP ...................................................................................... 25 4.1 Definition of the scope of the Plan .......................................................................... 25 4.2 Characteristics of the Area ..................................................................................... 25 4.3 General Flooding Characteristics and Issues ......................................................... 25 4.3.1