Working with Natural Processes – the evidence behind Natural Flood Management

1. Working with Natural Processes – the evidence behind Natural Flood Management Dr Lydia Burgess-Gamble – Principal Environmental Project Manager, Environment Agency @FCRMResearchEA

2. Source: photos and quotes Pitt Review of Summer 2007 floods

3. Leaky barriers Cross-slope woodland Catchment woodland Runoff pathways Headwater drainage

4. Leaky barriers Cross-slope woodland Floodplain restoration Catchment woodland Floodplain woodland Riparian woodland Runoff pathways River restoration Soil and land management Offline storage Headwater drainage

5. Leaky barriers Cross-slope woodland Salt marsh, mudflats and managed realignment Beach management Salt marsh, mudflats Floodplain restoration Catchment woodland Floodplain woodland Riparian woodland Runoff pathways Sand dunes River restoration Soil and land management Offline storage Headwater drainage Here are the 14 interventions we can make

6. 25 year environment plan We will: Take action to reduce the risk of harm from flooding and coastal erosion including greater use of natural flood management solutions. In addition, we will also focus on: Using more natural flood management solutions where appropriate.

7. FCRM it’s a mosaic “Natural flood management is an important part of our approach, alongside traditional flood defences and helping homeowners to improve their own property resilience”. Emma Howard Boyd

8. Property level resilience & temporary defences Incident management/response Strategy development FCRM is a mosaic Asset management & maintenance Natural Flood Management NFM is part of our Nation’s Flood Resilience Development planning

9. 1. Evidence Directory 2. The Maps 3. The Gaps

10. 1. Evidence Directory

11. 14 one-pagers 65 case studies Literature review

12. Peer Reviewed by academics https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/681411/Working_with_natural_processes_evidence_directory.pdf https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/654443/Working_with_natural_processes_evidence_directory_appendix_2_literature_review.pdf

13. Confidence level is based on potential effectiveness of measure at reducing flood risk. Degree of agreement of scientific studies, and amount of studies available

15. 65 great examples provided by you! https://www.gov.uk/government/publications/working-with-natural-processes-to-reduce-flood-risk

16. LINCS & NORTHANTS

17. EAST ANGLIA

18. YORKSHIRE

19. EAST MIDS

20. HNL

21. THAMES

22. WEST MIDS

23. DEVON & CORNWALL

24. GMMC

25. SSD

26. KSL

27. WESSEX

28. NORTH EAST

29. CUMBRIA & LANCASHIRE

30. SCOTLAND

31. WALES

32. Here are the 14 1 page summaries https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/654440/Working_with_natural_processes_one_page_summaries.pdf

33. But its not just about flooding Kate Kipling

34. Go to video of Paul This video can be accessed here from the video library: http://www.highwaterfilm.co.uk/library/

35. It’s not new

36. It works

37. Typically reduces flood risk for smaller floods in small to medium sized catchment Small catchment ~ 10km2 Medium catchment ~ 100km2 Large catchment ~ 1,000km2 Local scale impact Impact not catchment wide, it is localised to where the measure has been implemented Small flood <10 year return period events Medium flood From 10 year to 100 year return period events Large flood >100 year return period events

38. It complements rather than replaces traditional engineering

39. It can have unintended negative consequences

40. It almost always achieves multiple benefits for people and wildlife

41. 2. The Maps Kate Kipling Mark Whitling https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/693018/Working_with_natural_processes_mapping_user_guide.pdf https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/677592/Working_with_natural_processes_mapping_technical_report.pdf

42. Supporting guide Technical guide User Guide

43. Runoff attenuation + Gully blocking Riparian Woodland Floodplain Woodland Catchment Woodland Floodplain reconnection

44. How do I use these maps?

45. How to use the maps video • Introduction • Woodlands for Water • Mike Vaughan’s maps • Accessing the data • Live demo 1 • Live demo 2

46. Go to video of Mark

47. Using the evidence base https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/654435/Working_with_natural_processes_using_the_evidence_base.pdf

49. Catchment process modelling report https://www.gov.uk/government/publications/how-to-model-and-map-catchment-processes-when-flood-risk-management-planning

50. Hydrogeological & geological guidance • Section 3 in the ‘Using the evidence base’ guide provides some useful information on groundwater flood risk and NFM • Area NFM leads: • James Senior (Yorkshire) • John Davis, Steve Brown (West Midlands) • Helen Lawrie (Wessex) • Richard Morgan (Lincs & Northants) • Sean Arnott (Devon & Cornwall) • Tony Byrne (Solent & South Downs) • Simon Gebbett (Cumbria & Lancashire)