Flood Investigation Report
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D S A DAVID SMITH ASSOCIATES Consulting Structural & Civil Engineers London Northampton Cirencester Birmingham www.dsagroup.co.uk FLOOD INVESTIGATION REPORT BURCOTE FIELDS, TOWCESTER th 9 MARCH 2016 Client: Flood & Water Management Team Northamptonshire County Council One Angel Square, 4 Angel Street Northampton NN1 1ED Prepared By: Richard Jones Date: 28th November 2017 Reference: 16/ 22325 Revision: 03 VAT Registration No.: 670 8636 12 Eur Ing David Smith BSc(Hons), CEng, MICE, MIStructE, CMaPS, MFPWS, FCABE, ACIArb, Alison Smith Hitesh Jethwa BScEng(Hons), I.Eng, AMIStructE Steven Ainge BEng(Hons), IEng, AMIStructE Richard Jones HNC, TMICE, Eng.Tech, Thomas Garrod B.Eng.(Hons), Paul Silvester B.Eng(Hons), M.Eng, John Mills MA(Cantab), CEng, MICE, MIStructE. London Northampton Cirencester Birmingham 16 Upper Woburn Place 8 Duncan Close Waterloo House The Old Foundry Room No 5 London Moulton Park The Waterloo Bath Street WC1H 0AF Northampton NN3 6WL Cirencester GL7 2PY Wallsall WS1 3BZ 0203 7418098 01604 782620 01285 657328 01922 895 305 [email protected] [email protected] [email protected] [email protected] REVISION SCHEDULE Northamptonshire County Council Flood Investigation Report Burcote Fields, Towcester David Smith Associates Reference : 16/ 22325 Rev Date Details Author Checked Approved 01 19/09/17 Draft Report Richard Jones Josie Bateman Josie Bateman (David Smith (Senior Project (Senior Project Associates) Manager Manager F&WM) F&WM) 02 24/10/17 Draft report for Richard Jones Josie Bateman Josie Bateman stakeholder consultation (David Smith (Senior Project (Senior Project Associates) Manager Manager F&WM) F&WM) 03 28/11/17 Revision following Richard Jones Josie Bateman Josie Bateman additional (David Smith (Senior Project (Senior Project information/consultation Associates) Manager Manager F&WM) F&WM) FOREWORD One of the roles of Northamptonshire County Council as the Lead Local Flood Authority (LLFA) is to carry out investigations into flooding incidents if they meet the set thresholds. The LFFA will: • Identify and explain the likely cause/s of flooding; • Identify which authorities, communities and individuals have relevant flood risk management powers and responsibilities; • Provide recommendations for each of those authorities, communities and individuals; and • Outline whether those authorities, communities or individuals have or will exercise their powers or responsibilities in response to the flooding incident. The LLFA cannot: • Resolve the flooding issues or provide designed solutions; or • Force authorities to undertake any of the recommended actions. 16/ 22325 Flood Incident Report Burcote Fields, Towcester CONTENTS EXECUTIVE SUMMARY ............................................................................................................................ 1 1. INTRODUCTION ............................................................................................................................... 3 1.1 Lead Local Flood Authority Investigation ................................................................................ 3 1.2 Flooding Incident .................................................................................................................... 4 1.3 Site Location ............................................................................................................................ 5 1.4 Drainage Systems .................................................................................................................... 5 2. FLOODING HISTORY ........................................................................................................................ 6 2.1 Previous Flood Incidents ......................................................................................................... 6 2.2 Rainfall Analysis ...................................................................................................................... 6 3. SUMMARY OF IMPACTS AND FINDINGS ......................................................................................... 7 3.1 Areas of Flooding and Impacts ................................................................................................ 7 4. Previous Recommendations ........................................................................................................... 7 4.1 Outcomes of Previous Recommendations .............................................................................. 7 5. Recommendations .......................................................................................................................... 9 5.1 General .................................................................................................................................... 9 5.2 Communities ........................................................................................................................... 9 5.3 Lead Local Flood Authority (LLFA) ......................................................................................... 11 5.4 Highway Authority (Northamptonshire Highways) .............................................................. 12 5.5 Water Authority (Anglian Water Services) (AWS) ................................................................ 12 5.6 South Northamptonshire Council (SNC) ............................................................................... 13 5.7 Environment Agency (EA) ..................................................................................................... 13 5.8 Developers ............................................................................................................................ 13 5.9 Agricultural Land Owners ...................................................................................................... 14 6. CONCLUSION ................................................................................................................................. 15 RIGHTS AND RESPONSIBILITIES ............................................................................................................. 16 Communities ..................................................................................................................................... 16 Lead Local Flood Authority (LLFA) ..................................................................................................... 16 Highway Authority (Northamptonshire Highways) .......................................................................... 17 Water Authority (Anglian Water Services) (AWS) ............................................................................ 17 South Northamptonshire Council (SNC) ........................................................................................... 18 Environment Agency (EA) ................................................................................................................. 18 Land Owners and Developers ........................................................................................................... 19 16/ 22325 Flood Incident Report Burcote Fields, Towcester Disclaimer.............................................................................................................................................. 20 Acronyms .............................................................................................................................................. 21 Useful Links ........................................................................................................................................... 21 Useful Contacts ..................................................................................................................................... 22 APPENDIX A ............................................................................................................................................. 1 Location Plan & Incident Plan ............................................................................................................. 1 APPENDIX B ............................................................................................................................................. 2 Flood Map for Planning ....................................................................................................................... 2 APPENDIX C ............................................................................................................................................. 4 Risk of Flooding from Surface Water .................................................................................................. 4 APPENDIX D ............................................................................................................................................. 6 Environment Agency Standard Notice ................................................................................................ 6 APPENDIX E ............................................................................................................................................. 7 Photographs from Flood Incident Investigation 27/07/17 ................................................................. 7 16/ 22325 Flood Incident Report Burcote Fields, Towcester EXECUTIVE SUMMARY This Flood Investigation Report (FIR) has been completed by David Smith Associates on behalf of Northamptonshire County Council (NCC) under its duties as the Lead Local Flood Authority (LLFA) in accordance with Section 19 of the Flood and Water Management Act 2010 (F&WMA). Statutory Context Section 19 of