GEP, Objectives & Measures in the Netherlands

Transcription

1 GEP, Objectives & Measures in the Netherlands Diederik van der Molen Dep. River Basin Co-ordinator Ministry of Transport, Public Works and Water Management The Netherlands 12 maart 2009

2 Draft River Basin Management Plans: Water bodies 723 surface w.b. 23 ground w.b. Status art. 4.3 (surface wb) 303 heavily modified 403 artificial 17 natural Phasing obj. art. 4.4 Lowered obj. art. 4.5 >75% surface w.b. 8 ground w.b. 0 surface w.b. 0 ground w.b maart 2009

3 Content High percentage heavily modified and artificial waterbodies Method for GEP Comparison GEP and GES Present status Measures 3 12 maart 2009

4 High % heavily modified and artificial Without human intervention, about 60% of the Netherlands would be flooded by the sea loss of freshwater saltwater gradients water level management ditches and canals drains every m 4 12 maart 2009

5 Oostvaardersplassen 5 12 maart 2009

6 ecological status/eqr Method GEP: CIS guidance 2003 Alternative approach (Prague, 2005) Reference condition hydromorphological alteration mitigation MEP all possible measures minus measures with small ecological effect GEP Present ecological status 6 12 maart 2009

7 GEP derived in 4 steps 1: all measures 2: all possible measures EC and national policies (Nitrate- and Urban Wastewater Directive, national program on diffuse pollution, etc) All other measures (derived from a national database) Chemistry Hydromorpho logy Other flora Phytoplankton Macroinvertebrates Fish Waterlevel management x x Repositioning of dykes x x x Fish management x x x x Fish migration x x 3: Wastewater treatment + x x etc 7 12 maart 2009

8 Step 4. Calculation GEP 1. Estimation effect for each individual measure in EQR 2. Added to present ecological status (for each quality element) 3. Correction for combined effect 4. Validation by 2nd opinion of experts Result of the 4 steps: a national database with for each waterbody All measures Size Costs Responsible authority GEP 8 12 maart 2009

9 Comparability GES and GEP Natural river IC type RC1/4 national type R5 1.0 Modified river GES GEP EQR EQR Objective in RBMP 9 12 maart 2009

10 Comparability GES and GEP - results (Rhinedelta, 490 of 723 Dutch waterbodies) Lakes GES GEP (avg.) phytoplankton other flora macro-invert fish Rivers GES GEP (avg.) phytoplankton other flora macro-invert fish maart 2009

11 Ditches and canals Artificial surface waterbodies (about 300) Could not be derived from IC types New types Based on characteristics of both lakes and rivers More or less conform CIS Guidance 4 Because 1. Sufficient data of good status 2. Hydromorphology is good > less errors maart 2009

12 Present status (Rhinedelta, 490 of 723 Dutch waterbodies) 100% 80% 60% 40% 20% 0% unknown bad poor moderate Good / GEP biological status maart 2009

13 Measures: RBMP s (1) National policy (basic measures according to WFD art 11.3a) Continuation of national water-policy Community legislation Point and diffuse sources (WFD art 11.3g & h) Removal of 365 emissions of untreated waste water (after 2015: 108) Solving 156 sewerage spills (6) Improvements at 59 wastewater treatment plants (15) Removal of 5.6 million m3 polluted sediments etc maart 2009

14 Measures: RBMP s (2) Hydromorphological measures (WFD art 11.3i) 1727 km restoration of land-water gradients in lakes and canals (3357) 729 km restoration of land-water gradients and re-meandering in rivers (930) 1362 ha creation of wetlands (704) 635 solutions for fish-migration at weirs (884) Water level management, creation of side channels, etc Supplementary measures (WFD art 11.4) Fishmanagement ( biomanipulation ) Management of macrophytes Education, further research, etc 4.2 billion extra costs maart 2009

15 Overijsselse Vecht maart 2009 Current situation

16 Overijsselse Vecht maart 2009 Future situation

17 Conclusions High % heavily modified & artificial waterbodies is obvious Alternative approach for GEP is widely used in the NL is familiar to water managers was beneficial in the process of public participation transparent (method and database) comparable: same scale as GES Objectives GEP s differ not much from GES of similar types At present: < 15% GEP biology 2015: 30% GEP biology Application of phased objectives (WFD art 4.4) Measures Significant program of measures With commitment of authorities and euro s! maart 2009

18 Thank you for your attention Also on behalf of Marcel van den Berg and Fred Wagemaker maart 2009