WATER FRAMEWORK DIRECTIVE Identification of water bodies at risk of failing the environmental objectives

Transcription

1 WATER FRAMEWORK DIRECTIVE Identification of water bodies at risk of failing the environmental objectives Philippe Dupont Agence de l Eau Rhône-Méditerranée et Corse, Lyon-France

2 A double question : Which technical approach? Which organisation with local stakeholders?

3 Concerning organisation (cf. Water Law-1992 January 3th) Sub-basin Large basin Basin committee Water management master plan (SDAGE) Local water commission SAGE

4 1 Local water management in the district * The SAGE (water law 1992)

5 1 Local water management in the district * The river, lake, bay contracts (since 198 )

6 1 Local water management in the district

7 1 Local water management in the district An opportunity for : A A local expertise, an ability to contribute to the WFD The choice of the Basin Committee of the «co-construction» with local actors

8 2 General technical method Standard data Local expertise Pressures identification and impacts on present status (23) Evaluation of trends and prognostic status in 215 Assessment of risk of failing the environmental objectives in 215

9 3 Example : Allan watershed

10 Rosemontoise Savoureuse St Nicolas + Madeleine Bourbeuse Allaine + Allan Allan

11 3 Standard data Water bodies quality and pressures in 23 A - Pollution (point source and diffuse) Organic matters Nitrogen matters Nitrates Phosphorus matters Pesticides Other priority substances...

12

13 standard data at district level Rejet total Nitrates Rejet dominant Nitrates

14 3 Standard data Water bodies quality and pressures in 23 B- Morphological alterations, water abstractions... C - Biological data

15 3 Standard data To be compared and completed with local expertise

16 Etangs Prélèvements Pollutions industrielles Rejets Artificialisation Incision du lit Pollutions diffuses agricoles

17 Développement de zones d activités LGV RN 19 A 36 Mise au gabarit B1

18 4 Methodology Assessment of risk of failing good status Local expertise + standard data Current situation 23 Trends 215 Status / Organic M. Urban impact (Org. M.) Industries impact (Org. M.) Agriculture impact

19 5 Which results 1 - Redefinition of water bodies boundaries A water body : homogeneous status and one quality objective

20 Rosemontoise Savoureuse amont St Nicolas Madeleine Savoureuse aval Bourbeuse Allan Allaine / Allan

21 5 Which results 2 - Identification of main problems to achieve good status in Assessment of the risk of failing the environmental objectives for each water body 4 A first identification of the heavily modified water bodies

22 Physico -chimie Hydromo rphologie Autres Biologie Qualité du milieu/mo et Oxydables Qualité du milieu/matières azotées Impact des MO urbaines Impact des MO industrielles Impact des MO agricoles Qualité du milieu / nitrates Qualité du milieu/matières phosphorées Impact des nutriments urbains Impact des nutriments industriels Impact des nutriments agricoles Qualité du milieu/métaux Qualité du milieu/ pesticides Qualité du milieu/ autres micropolluants Impact des toxiques urbains Impact des toxiques industriels Impact des toxiques agricoles Qualité du milieu/ eutrophisation Impact des prélèvements et des modifications du régime hydrologique Impact des ouvrages transversaux Impact des aménagements sur la fonctionnalité transversale Impact des pressions directes sur le vivant Autres Impacts Qualité hydrobiologique (invertébrés) Qualité piscicole Principaux problèmes vis à vis du Bon Etat Risque de Non atteinte du Bon Etat Allaine/Allan Allan Rosmontoise Apport nutriments Suisse. Activités industrielle Faible Modification du milieu - forte concentration urb. Et ind. Moyen Impact des étangs Faible Milieu susceptible d être classé comme fortement modifié Non Non Non

23 5 Conclusions 1 - A very large participation (local actors) : a very heavy organisation but a good investment for the next stage 2 - An legitimate place for local expertise (definition of a common method!) 3 A real progress in global approach (thanks to the WFD!), even without definition of good status... 4 Further characterisation and program of measures to be implemented in the same way...

24 Dziekuje bardzo!