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Freshwater Morphology Study Best Practice Measures Tool Kit

Paul Johnston Associates Fisheries Consultants. Freshwater Morphology Study Best Practice Measures Tool Kit. Developing the Morphological Assessment Process. Fieldwork Contracts 2006 and 2007 Morphology and Biology Field Data. Risk Assessment Refinement

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Freshwater Morphology Study Best Practice Measures Tool Kit

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  1. Paul Johnston Associates Fisheries Consultants Freshwater Morphology StudyBest Practice Measures Tool Kit

  2. Developing the Morphological Assessment Process Fieldwork Contracts 2006 and 2007 Morphology and Biology Field Data Risk Assessment Refinement Use field data to refine Article 5 risk assessment pressure thresholds Aerial Imagery Capture and Processing PoMS STUDY Develop Remote Sensing Methods Derive Channel Typologies RISK ASSESSMENT Populate a morphology database CLASSIFICATION & MONITORING Decision Support Tool Programmes of Measures

  3. Developing the Morphological Assessment Process Fieldwork Contracts 2006 and 2007 Morphology and Biology Field Data Risk Assessment Refinement Use field data to refine Article 5 risk assessment pressure thresholds Aerial Imagery Capture and Processing PoMS STUDY Develop Remote Sensing Methods Derive Channel Typologies RISK ASSESSMENT Populate a morphology database CLASSIFICATION & MONITORING Decision Support Tool Best Practice Measures Toolkit Programmes of Measures

  4. Report contents Channelisation: • Approach to future river channel works Capital works & maintenance works Measures to address Morphological Pressures: • Outline of key pressures & impacts • Identification of specific measures to address key pressures

  5. FUTURE CHANNELISATION WORKS? Further arterial drainage schemes unlikely Channel works will focus on: • Capital works - Localised channel works: urban (& rural) flood prevention (also road works, bridge construction & associated channel realignment) • Maintenance works - Statutory requirement to maintain drainage schemes under Arterial Drainage Act 1945

  6. Programmes Of Measures (PoMs) Decision Support Tool Programmes of Measures Prescribed basic measures – national regulation system Protected areas measures – favourable condition requirements Supplementary measures – Apply morphology measures toolkit to prioritised waterbodies Awareness programmes Voluntary initiatives eg wetlands / riparian areas Actions – Morphology monitoring programme

  7. Programmes Of Measures (PoMs) Decision Support Tool Programmes of Measures Prescribed basic measures – national regulation system Protected areas measures – favourable condition requirements Supplementary measures – Apply morphology measures toolkit to prioritised waterbodies Awareness programmes Voluntary initiatives eg wetlands / riparian areas Actions – Morphology monitoring programme

  8. Programmes Of Measures (PoMs) 1 Basic measures - legislative and regulatory 2 Supplementary measures: • codes of practice • voluntary initiatives • improvement programmes Morphology Measures Tool Kit

  9. MORPHOLOGY PRESSURES Article 5 Pressures and Impacts Analysis Key morphology pressures: • Channelisation and flood embankments • Impoundments and regulation • Intensive land use + • Barriers to migration

  10. ANALYSIS Pressure Sub-pressure Impact Measure

  11. ANALYSIS Example Pressure = Channelisation Sub-pressure = Re-sectioning of channel Impact = Loss of morphological diversity Measure = Narrowing of channel

  12. Programmes Of Measures (PoMs) Supplementary measures: Morphology Measures Tool Kit 21 measures identified to address morphological pressures

  13. Main reference material (1): Anon (2000) Forestry and Water Quality Guidelines. Forest Service. Department of the Marine and Natural Resources. 13pp. Anon (2007) Farmer’s Guide to REPS 4. Rural Environment Protection Scheme. Department of Agriculture, Fisheries and Food. Anon (2007a) Guidelines on the Planning, Design, Construction & Operation of Small-Scale Hydro-Electric Schemes and Fisheries. Central & Regional Fisheries Boards & Engineering Division, Department of Agriculture, Fisheries & Food. Dublin. 52pp. APEM (1996) Restoration of Riverine Salmon Habitats – A Guidance Manual. R&D Technical Report W44. Environment Agency, Bristol. FAO/DVWK (2002) Fish passes – Design, dimensions and monitoring. Rome, FAO. 119pp Irish SuDS: Guidance and Tools. Dublin City Council. King JJ (2001) The Experimental Drainage Maintenance Programme (EDM) 1997-2001. Summary Report and Recommendations. Central Fisheries Board, Dublin. King JJ & Wightman GD (2006) The Experimental Drainage Maintenance Programme (EDM) 2002-2006. Management Summary. Central Fisheries Board, Dublin.

  14. Main reference material (2): OPW (2007) Screening of Natura 2000 sites for Impacts of Arterial Drainage Maintenance Operations. Series of Ecological Assessments on Arterial Drainage Maintenance – No 1. Office of Public Works. O’Grady MF (2006) Channels & Challenges. Enhancing Salmonid Rivers. Irish Freshwater Fisheries Ecology & Management Series: No 4. Central Fisheries Board, Dublin, Ireland. RRC (2002) Manual of River Restoration Techniques. River Restoration Centre, Silsoe, UKSEPA (2002) Managing River Habitats for Fisheries. SAC. Summers DW, Giles N & Willis DJ (1996) Restoration of Riverine Trout Habitats – A Guidance Manual. R&D Technical Report W18. Environment Agency, Bristol. Ward D, Holmes N & José P (1994) The New Rivers and Wildlife Handbook. RSPB, NRA, RSNS, Royal Society for Protection of Birds, 426pp. WWF (2000) Farming and Watercourse Management. SNH, WWF (Scotland), FWAG, SEPA, SAC.

  15. DRAINAGE MAINTENANCE WORKS Best practice measures OPW Environmental Drainage Maintenance 10 steps Protect bank slopes Restrict maintenance to channel Deposit spoil on bank full Selective vegetation removal Leave sections untouched

  16. DRAINAGE MAINTENANCE WORKS Best practice measures OPW Environmental Drainage Maintenance 10 steps Management of trees Manage berms to form 2-stage channel Replace boulders Loosen bed gravels Excavate pools

  17. PRESSURE: Channelisation and flood embankments Summary of measures: 1. Re-meandering of straightened channels 2. Narrowing of channels 3. Re-construction of pools 4. Substrate enhancement 5. Fencing programmes to exclude livestock 6. Removal or re-location of flood banks 7. Application of OPW Environmental Drainage Maintenance guidelines 8. Incorporation of river restoration & fisheries enhancement projects 9. Adjustment of drainage maintenance criteria

  18. PRESSURE: Impoundments & Regulation Summary of measures: 10. Removal of structure and de-silting of impounded reach 11. Adoption of operational protocols

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