Chalk Streams of Sussex:Recognition, Protection &     Enhancement Nigel Holmes & Fran Southgate:          January 2012
Planned Coverage•What are chalk streams?•Characteristics and Natural Variation•What do they typically look like?•Sussex ch...
What are chalk streams? Official ‘BAP’ National Resource       Reflects Chalk         Geology                             ...
Perennial Chalk RiversChalk Geology = V V high BFI = V V Stable Flow
Non-Chalk RiversImpervious (Clay) Geology = low BFI = ‘Flashy’ Flow
Mixed Geology with Chalk - Perennial RiversMixed Clay/Chalk Geology = high BFI = Stable Flow with Bigger Troughs and Highe...
Natural Chalk Rivers/Stream often ‘Winterbournes’
NATURALLLY Winterbourne
NATURALLLY Winterbourne
NATURALLLY Winterbourne
NATURALLLY Winterbourne
NATURALLLY Winterbourne
NATURALLLY Winterbourne
NATURALLLY Winterbourne
NATURALLLY Winterbourne
Perennial Chalk Streams - Meon
Perennial Chalk Streams – Lambourn
Perennial Chalk Streams – Kennet
Perennial Chalk Streams – Itchen
Sussex Chalk Streams: Distribution &             Resource
Sussex Chalk Streams: Distribution & Resource
Sussex Chalk Streams: Are there more Fran asks!!?
Sussex ChalkStreams: Bosham
Sussex Chalk  Streams:  Bosham
Sussex Chalk  Streams:  Bosham
ScarpStreams - Arundel
Scarp Streams –       manywoodedbanks and  woody debris     features
Scarp Streams - Dynamic
ScarpStreams - Sutton
Scarp Streams   – Special  Character:   PROTECT
Some Scarp Streams    – V SpecialCharacter: PROTECT
Some Not So    Special  Character:REHABILITATION  POTENTIAL
Key Quality Parameters
Rehabilitation needed and can be easy
Rehabilitationneeded and can  be easy: just   move bed    materialsaround – Undo    Historical ‘Flattening’!!!
Rehabilitation needed and can be easy:     just ‘Un-flatten’
Rehabilitation needed and can be easy:but need helpin promotionthrough keen& pioneering landowners
Rehabilitation neededand can be easy: need  keen & pioneering   landowners and        vision
Examples ofRehabilitation   on SmallChalk Streams
Examples of Rehabilitation on Small Chalk Streams
Examples of Rehabilitation on Small Chalk Streams
Examples ofRehabilitation on  Small Chalk    Streams
Examples of Rehabilitation on Small Chalk Streams
Examples of Rehabilitation on Small Chalk Streams
Thanks & Keep up the Good Work
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Sussex Wetland Conference: Nigel Holmes

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Nigel Holmes
Chalk Streams
Sussex Wetland Conference

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Sussex Wetland Conference: Nigel Holmes

  1. 1. Chalk Streams of Sussex:Recognition, Protection & Enhancement Nigel Holmes & Fran Southgate: January 2012
  2. 2. Planned Coverage•What are chalk streams?•Characteristics and Natural Variation•What do they typically look like?•Sussex chalk rivers – resource anddistribution•What do Sussex chalk streams look like?•Anything special about them?•PROTECTION REQUIRED.•REHABILITATION REQUIRED•Examples of chalk stream rehabilitation
  3. 3. What are chalk streams? Official ‘BAP’ National Resource Reflects Chalk Geology Ems & Lavant only Sussex ones identified
  4. 4. Perennial Chalk RiversChalk Geology = V V high BFI = V V Stable Flow
  5. 5. Non-Chalk RiversImpervious (Clay) Geology = low BFI = ‘Flashy’ Flow
  6. 6. Mixed Geology with Chalk - Perennial RiversMixed Clay/Chalk Geology = high BFI = Stable Flow with Bigger Troughs and Higher Peaks
  7. 7. Natural Chalk Rivers/Stream often ‘Winterbournes’
  8. 8. NATURALLLY Winterbourne
  9. 9. NATURALLLY Winterbourne
  10. 10. NATURALLLY Winterbourne
  11. 11. NATURALLLY Winterbourne
  12. 12. NATURALLLY Winterbourne
  13. 13. NATURALLLY Winterbourne
  14. 14. NATURALLLY Winterbourne
  15. 15. NATURALLLY Winterbourne
  16. 16. Perennial Chalk Streams - Meon
  17. 17. Perennial Chalk Streams – Lambourn
  18. 18. Perennial Chalk Streams – Kennet
  19. 19. Perennial Chalk Streams – Itchen
  20. 20. Sussex Chalk Streams: Distribution & Resource
  21. 21. Sussex Chalk Streams: Distribution & Resource
  22. 22. Sussex Chalk Streams: Are there more Fran asks!!?
  23. 23. Sussex ChalkStreams: Bosham
  24. 24. Sussex Chalk Streams: Bosham
  25. 25. Sussex Chalk Streams: Bosham
  26. 26. ScarpStreams - Arundel
  27. 27. Scarp Streams – manywoodedbanks and woody debris features
  28. 28. Scarp Streams - Dynamic
  29. 29. ScarpStreams - Sutton
  30. 30. Scarp Streams – Special Character: PROTECT
  31. 31. Some Scarp Streams – V SpecialCharacter: PROTECT
  32. 32. Some Not So Special Character:REHABILITATION POTENTIAL
  33. 33. Key Quality Parameters
  34. 34. Rehabilitation needed and can be easy
  35. 35. Rehabilitationneeded and can be easy: just move bed materialsaround – Undo Historical ‘Flattening’!!!
  36. 36. Rehabilitation needed and can be easy: just ‘Un-flatten’
  37. 37. Rehabilitation needed and can be easy:but need helpin promotionthrough keen& pioneering landowners
  38. 38. Rehabilitation neededand can be easy: need keen & pioneering landowners and vision
  39. 39. Examples ofRehabilitation on SmallChalk Streams
  40. 40. Examples of Rehabilitation on Small Chalk Streams
  41. 41. Examples of Rehabilitation on Small Chalk Streams
  42. 42. Examples ofRehabilitation on Small Chalk Streams
  43. 43. Examples of Rehabilitation on Small Chalk Streams
  44. 44. Examples of Rehabilitation on Small Chalk Streams
  45. 45. Thanks & Keep up the Good Work

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