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WFD and Inland Navigation

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Presentation on theme: "WFD and Inland Navigation"— Presentation transcript:

1 WFD and Inland Navigation
Impact on Ecological Quality? Frederik J. MINK

2 Navigation and water bodies
Type: Marine Transitional Inland Water Body: Coastal Estuaries Ports Rivers and lakes Canals Classification: NWB HMWB AWB Type of Navigation: Maritime transport Inland Waterborne

3 Water bodies Specified uses (HMWB) Quality elements
Navigation (transport) Flood protection Hydrodams Cooling water Water supply Fisheries Recreation Urbanisation Quality elements Biological Hydromorphological Physico-chemical Ecological PRESSURES

4 Factors defining Quality
Environmental quality WFD Art. 8.1 Ecological status Chemical status Hydromorphology Biological factors Guidance doc Physical aspects Chemical aspects

5 Impact Model Physico-chemical factors Economy Biological quality
Urbanisation Industry discharge Cooling water Cooling water Transport Fisheries Hydropower Physico-chemical factors Economy Biological quality Ecologicalstatus WFD Environment Sustainability Hydro-morphology status Societal Water supply Flood protection Urbanisation Recreation Hydropower Transport Flood protection

6 Inland navigation Hydromorphology Ecological quality
Current velocity Erosion Sediment deposition Bed structure Riparian zone Biodiversity Possible mitigation Dams H L M Sediment bypasses fish traps Locks River bypass Straightening M/H L/H Maintain rivers arms as quiet zones Widening N.S. Compensate with e.g. bird islands Deepening Restore bed structure Embankments Compensate with “green shores” Maintenance dredging (Restoration process) Impact Pressure H=High M=Medium L=Low N.S.=Not Significant

7 Inland navigation pressures
Impact Possible Response Accidents dangerous substances Double hull tankers Leaks/ Bilge water Env. Management Codes/ Oil-water sep. Waste Waste Reception Facilities Waves Bank protection Antifouling leaching TBT phase out – Cu concern Ballast water / alien species IMO Convention Turbidity /suspended matter Limited consequences Contaminant release Temporary – no long term impact water chemistry D.M. Placement May have positive impact on hydromorphology Benthic fauna Complete restoration in 6-24 mo.

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11 Conclusion Inland Navigation Navigation impact
One of many specified uses Designation as HMWB possible Navigation impact Mainly hydromorphology Many Impacts on ecology can be mitigated Direct effect on chemical water quality small Other sources dominant (agri, urban,industry)


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