Deltaprogramme Rivers. Role of connectivity research in national policy on river management

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1 Deltaprogramme Rivers Role of connectivity research in national policy on river management Josan Tielen, August 25, 2014

2 Content Research agenda Deltaprogramme Part of the new policy headlines for the next decades (til ) To protect NL against floods and supply enough water in the changing circumstances to come Deltaprogramma l Rivieren

3 Research agenda Deltaprogramme Rivers Effects of changing the distribution of river water over the 3 branches of the river Rhine Morphology changes of the riverbed due to room for the river Benefits of new connection between the Waal- Meuse in times of water shortage How to include long term effects in our policy Dealing with the large uncertainties in climate, response of the Germans, behaviour of seepage water etc. Deltaprogramma Rivieren

4 l Rivieren Characterization of the rivers in The Netherlands - NL Part of 4 river basins: - Rhine - Meuse - Schelde - Eems Deltaprogramma l Rivieren

5 Rivers, a hate-love relationship Rivers built the country Rivers supply drinking water, fertile soil, transport to the hinterland of Rotterdam Rivers are attractive parts of our landscape, important for recreation Yet Rivers can become threats & Need constant maintainance Deltaprogramma Rivieren

6 The Netherlands, a vulnerable country Flood prone areas by sea and rivers > 50% of the country Deltaprogramma l Rivieren

7 Rivers through history Holocene: Building of the Delta Deltaprogramma Rivieren

8 Modifications in the last millennium Dikes Changing of bifurcations points Digging of new branches Closing of old branches Normalization Barriers Loss of floodplains Deltaprogramma Rivieren

9 Illusions Plaatje van uiterwaarden bij Arnhem Deltaprogramma Rivieren

10 Less room for the river by claiming flood plains Deltaprogramma Arnhem 1830 Arnhem 2000

11 Floods in 1993 en 1995, damage en evacuations Deltaprogramma

12 National programme Room for the River Deltaprogramma

13 Deltaprogramma Delta programme Delta law Delta funds Delta plan Delta commissioner Adaptive policy development Long term (2050/2100) Climate change Water safety & Supply of fresh water 6 regional & 3 thematical programmes Deltaprogramma Rivieren

14 Planning Deltaprogramma Deelprogramma s Mogelijke strategieën Deltabeslissingen Kansrijke strategieën Voorkeursstrategieën Deltabeslissingen Deltaplan Omgevingsplan - Regionale plannen Aanpassing wetgeving Projectenbesluiten Uitvoerings- programma( s).. DP 2015 Sept

15 Deltaprogramme strategic delta decisions Water safety Adaptation in the built environment Fresh water supply Rijn-Maas-Delta Ijsselmeer area Strategies of preference Delta plan: measures to be taken Deltaprogramma l Rivieren

16 l Rivieren From standards for dykes based on the chance of water levels exceeding the height of the dyke 16

17 l Rivieren 10 miljard euro slachtoffers miljoen euro 0-5 slachtoffers towards standards based on the risk of inundation (chance x consequences) Deltaprogramma l Rivieren

18 l Rivieren Present chance on victims and economical damage 2015 Deltaprogramma l Rivieren

19 Task on Water safety, dealing with: Dykes that are unfit & piping New standards for dykes Subsidence of the ground levels Rising of the sea level Increasing river discharges: Meuse: > 4200 (2050) -> 4600 m 3 /s (2100) Rijn: > (2050) -> m 3 /s (2100) Deltaprogramma l Rivieren

20 Research agenda Deltaprogramme Rivers Changing the distribution of river water Morphological effects of room for the river New connection Waal-Meuse / water shortage Long term effects / policy Uncertainties Deltaprogramma Rivieren

21 Bifurcation point Rijn and IJssel More water -> IJssel for fresh water supplies? Less water -> the Rhine / Lek to postpone dyke reinforcements? More water -> Waal to concentrate measures

22 What s next? Governance Drive to start projects, visible action Research, maintainance and monitoring have to fight for attention a research agenda is the first step Deltaprogramma Rivieren