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Oulujoki River Basin Area: 22841 km 2 Mean flow: 259 m 3/ s Number of lakes above 50 ha: 398

Progress and activities of Oulujoki PRB (Finland) PRB Workshop 2006 Stresa, Italy Teemu Ulvi Seppo Hellsten Finnish Environment Institute. Oulujoki River Basin Area: 22841 km 2 Mean flow: 259 m 3/ s Number of lakes above 50 ha: 398 Population: 226 000 (11.5 inhabitants/km 2 ).

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Oulujoki River Basin Area: 22841 km 2 Mean flow: 259 m 3/ s Number of lakes above 50 ha: 398

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  1. Progress and activities of Oulujoki PRB (Finland)PRB Workshop 2006Stresa, ItalyTeemu UlviSeppo HellstenFinnish Environment Institute

  2. Oulujoki River Basin • Area: 22841 km2 • Mean flow: 259 m3/s • Number of lakes above 50 ha: 398 • Population: 226 000 (11.5 inhabitants/km2)

  3. Main focus of the work • Oulujoki PRB is officially committed to the work of WG B “Integrated river basin management” • sub-focus “Links to research projects” • main part of activities carried out in the frame of the Baltic Sea Region Interreg IIIB – project “Watersketch” • Activities also related to WG A “Ecological status” and “Hydromorphology group” • not official announcement given

  4. Main activities 2005 • Case studies related to river basin management • study on the environmental effects of peat production on River Muhosjoki and of forestry on small lakes in Kainuu • pilot study of determination of good ecological potential of the modified downstream stretch of River Oulujoki and Lake Kemijärvi • Lake Kemijärvi case presented in the workshop "WFD and Hydromorphology“, Prague (CZ), October 17-19, 2005 • creation of a systematic approach for selecting the Natura 2000 sites relevant for the Water Framework Directive • poster presentation in ”Harmoni-CA Forum and Conference”, Osnabrück, D, April 5-7, 2006 • Analysis of European Policies related to River Basin Planning and Management • literature survey, questionnaire of WFD implementation in Baltic Sea Region, seminar Results will be reported 2006-07!

  5. Norway Russia Sweden Power plant BothnianBay Case study for determination of good ecological potential of Lake Kemijärvi • Heavily regulated lake for hydropower and flood defence with regulation amplitude of 7 m • Fully developed downstream stretch with 8 power plant • Total value of produced hydropower app. 10 M€/year

  6. Questions to be answered in HMWB? • What is the current ecological status? • Which mitigation measures are possible? • What are their effects on ecological status?

  7. High ecological status (reference status) Measures with significant effect on use or too costly Maximum ecological potential All hydromorphological mitigation measures Current ecological status Existing mitigation measures A B

  8. Some conclusions • Significant differences on availability of biological data • No possibilities to calculate EQR for fishes • Littoral benthic fauna data moderate • Macrophyte data relatively good • It is difficult to improve ecological status without changing regulation practise • only local changes are possible e.g. by constructing bottom weirs

  9. A) Changes in regulation practise Average Fluctuation zone Regulation permit Goals

  10. B) Construction of bottom weirs • Narkiperä-bay • 3 km2 (1,3 %) • HW - NW = 4.76 m • => to be reduced by weir to 1.65 m • Kaisanlahti-bay • 9 km2 (3,8 %) • HW – NW = 3.5 m • => to be reduced by weir to 1.65 m

  11. Effects of bottom weir areas on ecological status and loss of produced hydropower Loss of energy 0 GWh 420 GWh

  12. 1 • Macrophytes EQR • Present 0.29 • after measures 0.46 (MEP) 1 0 0 • Transformation for scale 0-1 • reference status 1 • present status 0.63 (=good ecological potential) How to calculate maximum ecological potential - macrophytes? • Assumption: eutrophication is not having significant effect on ecological status

  13. How to estimate significant effect on use? • Annual benefit of Lake Kemijärvi regulation for hydropower production is app. 10 mill. € • Significant effect 2 %? => total losses 200 000 € • Significant effect 5 % ? => total losses 500 000 € • Estimated effects of MEP • 0,3 m rise in February > loss 0,5 mill. €/ year • 1 m rise in April > loss 0,5 mill. €/year • Summer time lowering 0,5 m > loss 0,1 mill. €/year • Bottom weirs (Kaisanlahti & Narkiperä) > loss 0,15 mill €/year • Total losses > 1,2 mill. €/year > SIGNIFICANT (12 %) LOSS • Finally the costs of MEP were too high! • Obviously in many cases GEP already achieved!

  14. Analysis of European Policies related to River Basin Planning and Management Directives containing measures included in the programme of measures

  15. International Conventions and treaties Helsinki Convention W F D Aarhus Convention The Kyoto Protocol EU Council Declarations Lisbon Strategy Other legislation with relationships tothe Water Framework Directive EU recommendations European Spatial Development Perspective Integrated Coastal Zone Management

  16. Cross cuttings in legislation related to river basin management

  17. Level of involvement with the working group(s) • main focus in co-operation with Watersketch project • contacts between PRB and WG very limited

  18. Future plans • activities will mainly go on according to the working plan of Watersketch project • main focus on producing/promoting specific tools that could be utilised in river basin planning • eg. database for handling feedback from public, GIS tool for calculating nutrient loading, flow and water level analysis tools… • CEA analysis by using multi-criteria decision analysis methods in River Kyrönjoki • THANK YOU!

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